/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread/triangular-longest-2.i
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-b09bf87
[2020-10-16 10:51:20,546 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-10-16 10:51:20,550 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-16 10:51:20,592 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-16 10:51:20,593 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-16 10:51:20,602 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-16 10:51:20,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-16 10:51:20,611 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-16 10:51:20,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-16 10:51:20,616 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-16 10:51:20,617 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-10-16 10:51:20,618 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-16 10:51:20,618 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-16 10:51:20,620 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-16 10:51:20,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-16 10:51:20,625 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-16 10:51:20,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-16 10:51:20,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-16 10:51:20,629 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-16 10:51:20,634 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-16 10:51:20,639 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-16 10:51:20,643 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-16 10:51:20,645 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-10-16 10:51:20,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-16 10:51:20,647 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-16 10:51:20,648 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-16 10:51:20,648 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-16 10:51:20,649 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-16 10:51:20,649 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-16 10:51:20,650 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-16 10:51:20,650 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-16 10:51:20,651 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-16 10:51:20,651 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
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[2020-10-16 10:51:20,653 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-16 10:51:20,653 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-16 10:51:20,654 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-16 10:51:20,654 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-16 10:51:20,654 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-16 10:51:20,655 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-16 10:51:20,656 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-10-16 10:51:20,656 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-10-16 10:51:20,681 INFO L113 SettingsManager]: Loading preferences was successful
[2020-10-16 10:51:20,681 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-16 10:51:20,683 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-16 10:51:20,683 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-10-16 10:51:20,683 INFO L138 SettingsManager]: * Use SBE=true
[2020-10-16 10:51:20,683 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-16 10:51:20,684 INFO L138 SettingsManager]: * sizeof long=4
[2020-10-16 10:51:20,684 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-10-16 10:51:20,684 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-10-16 10:51:20,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-10-16 10:51:20,684 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-10-16 10:51:20,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-16 10:51:20,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-10-16 10:51:20,685 INFO L138 SettingsManager]: * sizeof long double=12
[2020-10-16 10:51:20,685 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-10-16 10:51:20,685 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-10-16 10:51:20,686 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-10-16 10:51:20,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-16 10:51:20,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-10-16 10:51:20,686 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-10-16 10:51:20,687 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-10-16 10:51:20,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-16 10:51:20,687 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-16 10:51:20,687 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-10-16 10:51:20,688 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-16 10:51:20,688 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-10-16 10:51:20,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-16 10:51:20,688 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-16 10:51:20,688 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-10-16 10:51:20,689 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2020-10-16 10:51:20,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-16 10:51:21,010 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-16 10:51:21,014 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-16 10:51:21,015 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-10-16 10:51:21,016 INFO L275 PluginConnector]: CDTParser initialized
[2020-10-16 10:51:21,017 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longest-2.i
[2020-10-16 10:51:21,085 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50e8bfbad/6203592c89434174a3377ed6b3c5e809/FLAG03c7e6703
[2020-10-16 10:51:21,616 INFO L306 CDTParser]: Found 1 translation units.
[2020-10-16 10:51:21,617 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread/triangular-longest-2.i
[2020-10-16 10:51:21,635 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50e8bfbad/6203592c89434174a3377ed6b3c5e809/FLAG03c7e6703
[2020-10-16 10:51:21,945 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50e8bfbad/6203592c89434174a3377ed6b3c5e809
[2020-10-16 10:51:21,954 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-16 10:51:21,956 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements.
[2020-10-16 10:51:21,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-16 10:51:21,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-16 10:51:21,961 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-16 10:51:21,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 10:51:21" (1/1) ...
[2020-10-16 10:51:21,965 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d6554a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:21, skipping insertion in model container
[2020-10-16 10:51:21,965 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 10:51:21" (1/1) ...
[2020-10-16 10:51:21,973 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-10-16 10:51:22,029 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-10-16 10:51:22,558 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-10-16 10:51:22,569 INFO L203 MainTranslator]: Completed pre-run
[2020-10-16 10:51:22,612 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-10-16 10:51:22,687 INFO L208 MainTranslator]: Completed translation
[2020-10-16 10:51:22,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:22 WrapperNode
[2020-10-16 10:51:22,688 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-16 10:51:22,689 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2020-10-16 10:51:22,689 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2020-10-16 10:51:22,689 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2020-10-16 10:51:22,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:22" (1/1) ...
[2020-10-16 10:51:22,716 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:22" (1/1) ...
[2020-10-16 10:51:22,740 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2020-10-16 10:51:22,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-16 10:51:22,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-16 10:51:22,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-10-16 10:51:22,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:22" (1/1) ...
[2020-10-16 10:51:22,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:22" (1/1) ...
[2020-10-16 10:51:22,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:22" (1/1) ...
[2020-10-16 10:51:22,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:22" (1/1) ...
[2020-10-16 10:51:22,761 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:22" (1/1) ...
[2020-10-16 10:51:22,766 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:22" (1/1) ...
[2020-10-16 10:51:22,768 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:22" (1/1) ...
[2020-10-16 10:51:22,772 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-16 10:51:22,772 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-16 10:51:22,772 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-10-16 10:51:22,773 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-10-16 10:51:22,774 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:22" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-16 10:51:22,851 INFO L130 BoogieDeclarations]: Found specification of procedure t1
[2020-10-16 10:51:22,851 INFO L138 BoogieDeclarations]: Found implementation of procedure t1
[2020-10-16 10:51:22,851 INFO L130 BoogieDeclarations]: Found specification of procedure t2
[2020-10-16 10:51:22,851 INFO L138 BoogieDeclarations]: Found implementation of procedure t2
[2020-10-16 10:51:22,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-10-16 10:51:22,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin
[2020-10-16 10:51:22,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-16 10:51:22,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-16 10:51:22,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end
[2020-10-16 10:51:22,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-16 10:51:22,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-16 10:51:22,855 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement
[2020-10-16 10:51:23,217 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-16 10:51:23,217 INFO L298 CfgBuilder]: Removed 6 assume(true) statements.
[2020-10-16 10:51:23,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 10:51:23 BoogieIcfgContainer
[2020-10-16 10:51:23,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-16 10:51:23,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-16 10:51:23,235 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-10-16 10:51:23,239 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-10-16 10:51:23,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 10:51:21" (1/3) ...
[2020-10-16 10:51:23,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77fe8f4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 10:51:23, skipping insertion in model container
[2020-10-16 10:51:23,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:22" (2/3) ...
[2020-10-16 10:51:23,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77fe8f4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 10:51:23, skipping insertion in model container
[2020-10-16 10:51:23,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 10:51:23" (3/3) ...
[2020-10-16 10:51:23,244 INFO L111 eAbstractionObserver]: Analyzing ICFG triangular-longest-2.i
[2020-10-16 10:51:23,254 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2020-10-16 10:51:23,255 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2020-10-16 10:51:23,262 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-16 10:51:23,263 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2020-10-16 10:51:23,293 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 10:51:23,294 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 10:51:23,294 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 10:51:23,295 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 10:51:23,295 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 10:51:23,295 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 10:51:23,296 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 10:51:23,296 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 10:51:23,296 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 10:51:23,297 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 10:51:23,297 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 10:51:23,298 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 10:51:23,298 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 10:51:23,298 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 10:51:23,299 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 10:51:23,299 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 10:51:23,299 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 10:51:23,299 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 10:51:23,300 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 10:51:23,300 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 10:51:23,300 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 10:51:23,301 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 10:51:23,301 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 10:51:23,301 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 10:51:23,302 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 10:51:23,302 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 10:51:23,302 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 10:51:23,303 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 10:51:23,306 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 10:51:23,307 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 10:51:23,307 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 10:51:23,307 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 10:51:23,308 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 10:51:23,308 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 10:51:23,315 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 10:51:23,315 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 10:51:23,315 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 10:51:23,316 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 10:51:23,316 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 10:51:23,316 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 10:51:23,318 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2020-10-16 10:51:23,330 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations.
[2020-10-16 10:51:23,349 INFO L377 AbstractCegarLoop]: Interprodecural is true
[2020-10-16 10:51:23,349 INFO L378 AbstractCegarLoop]: Hoare is true
[2020-10-16 10:51:23,349 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP
[2020-10-16 10:51:23,350 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-16 10:51:23,350 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-16 10:51:23,350 INFO L382 AbstractCegarLoop]: Difference is false
[2020-10-16 10:51:23,350 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-16 10:51:23,350 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-16 10:51:23,362 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation.
[2020-10-16 10:51:23,365 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 55 transitions, 120 flow
[2020-10-16 10:51:23,367 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 55 transitions, 120 flow
[2020-10-16 10:51:23,369 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 57 places, 55 transitions, 120 flow
[2020-10-16 10:51:23,409 INFO L129 PetriNetUnfolder]: 5/53 cut-off events.
[2020-10-16 10:51:23,409 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES.
[2020-10-16 10:51:23,415 INFO L80 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 53 events. 5/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 79 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place.
[2020-10-16 10:51:23,418 INFO L117 LiptonReduction]: Number of co-enabled transitions 924
[2020-10-16 10:51:24,484 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55
[2020-10-16 10:51:24,742 INFO L132 LiptonReduction]: Checked pairs total: 911
[2020-10-16 10:51:24,742 INFO L134 LiptonReduction]: Total number of compositions: 45
[2020-10-16 10:51:24,750 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 15 transitions, 40 flow
[2020-10-16 10:51:24,761 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states.
[2020-10-16 10:51:24,764 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states.
[2020-10-16 10:51:24,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2020-10-16 10:51:24,772 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:24,773 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:24,773 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:24,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:24,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1798862799, now seen corresponding path program 1 times
[2020-10-16 10:51:24,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:24,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194823850]
[2020-10-16 10:51:24,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:24,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:25,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:25,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194823850]
[2020-10-16 10:51:25,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-16 10:51:25,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2020-10-16 10:51:25,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724774965]
[2020-10-16 10:51:25,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-10-16 10:51:25,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:25,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-10-16 10:51:25,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-10-16 10:51:25,044 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states.
[2020-10-16 10:51:25,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:25,117 INFO L93 Difference]: Finished difference Result 75 states and 190 transitions.
[2020-10-16 10:51:25,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2020-10-16 10:51:25,119 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6
[2020-10-16 10:51:25,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:25,132 INFO L225 Difference]: With dead ends: 75
[2020-10-16 10:51:25,132 INFO L226 Difference]: Without dead ends: 42
[2020-10-16 10:51:25,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-10-16 10:51:25,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states.
[2020-10-16 10:51:25,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42.
[2020-10-16 10:51:25,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states.
[2020-10-16 10:51:25,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 98 transitions.
[2020-10-16 10:51:25,173 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 98 transitions. Word has length 6
[2020-10-16 10:51:25,174 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:25,174 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 98 transitions.
[2020-10-16 10:51:25,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-10-16 10:51:25,174 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 98 transitions.
[2020-10-16 10:51:25,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2020-10-16 10:51:25,175 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:25,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:25,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-16 10:51:25,176 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:25,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:25,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1777031324, now seen corresponding path program 1 times
[2020-10-16 10:51:25,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:25,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308402101]
[2020-10-16 10:51:25,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:25,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:25,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:25,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308402101]
[2020-10-16 10:51:25,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-16 10:51:25,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-10-16 10:51:25,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295693470]
[2020-10-16 10:51:25,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-16 10:51:25,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:25,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-16 10:51:25,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-10-16 10:51:25,295 INFO L87 Difference]: Start difference. First operand 42 states and 98 transitions. Second operand 5 states.
[2020-10-16 10:51:25,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:25,326 INFO L93 Difference]: Finished difference Result 56 states and 130 transitions.
[2020-10-16 10:51:25,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2020-10-16 10:51:25,326 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8
[2020-10-16 10:51:25,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:25,328 INFO L225 Difference]: With dead ends: 56
[2020-10-16 10:51:25,328 INFO L226 Difference]: Without dead ends: 50
[2020-10-16 10:51:25,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30
[2020-10-16 10:51:25,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states.
[2020-10-16 10:51:25,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 42.
[2020-10-16 10:51:25,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states.
[2020-10-16 10:51:25,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 100 transitions.
[2020-10-16 10:51:25,338 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 100 transitions. Word has length 8
[2020-10-16 10:51:25,339 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:25,339 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 100 transitions.
[2020-10-16 10:51:25,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-10-16 10:51:25,339 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 100 transitions.
[2020-10-16 10:51:25,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2020-10-16 10:51:25,340 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:25,340 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:25,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-16 10:51:25,341 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:25,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:25,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1669374595, now seen corresponding path program 1 times
[2020-10-16 10:51:25,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:25,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680680742]
[2020-10-16 10:51:25,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:25,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:25,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:25,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680680742]
[2020-10-16 10:51:25,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-16 10:51:25,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-10-16 10:51:25,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560349155]
[2020-10-16 10:51:25,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-10-16 10:51:25,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:25,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-10-16 10:51:25,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2020-10-16 10:51:25,419 INFO L87 Difference]: Start difference. First operand 42 states and 100 transitions. Second operand 6 states.
[2020-10-16 10:51:25,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:25,499 INFO L93 Difference]: Finished difference Result 78 states and 180 transitions.
[2020-10-16 10:51:25,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2020-10-16 10:51:25,499 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10
[2020-10-16 10:51:25,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:25,501 INFO L225 Difference]: With dead ends: 78
[2020-10-16 10:51:25,501 INFO L226 Difference]: Without dead ends: 71
[2020-10-16 10:51:25,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72
[2020-10-16 10:51:25,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states.
[2020-10-16 10:51:25,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 46.
[2020-10-16 10:51:25,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states.
[2020-10-16 10:51:25,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 113 transitions.
[2020-10-16 10:51:25,511 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 113 transitions. Word has length 10
[2020-10-16 10:51:25,511 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:25,511 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 113 transitions.
[2020-10-16 10:51:25,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-10-16 10:51:25,512 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 113 transitions.
[2020-10-16 10:51:25,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2020-10-16 10:51:25,513 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:25,513 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:25,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-16 10:51:25,513 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:25,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:25,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1669391335, now seen corresponding path program 2 times
[2020-10-16 10:51:25,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:25,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431160622]
[2020-10-16 10:51:25,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:25,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:25,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:25,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431160622]
[2020-10-16 10:51:25,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-16 10:51:25,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-10-16 10:51:25,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763955280]
[2020-10-16 10:51:25,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-10-16 10:51:25,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:25,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-10-16 10:51:25,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2020-10-16 10:51:25,591 INFO L87 Difference]: Start difference. First operand 46 states and 113 transitions. Second operand 6 states.
[2020-10-16 10:51:25,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:25,674 INFO L93 Difference]: Finished difference Result 54 states and 125 transitions.
[2020-10-16 10:51:25,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2020-10-16 10:51:25,675 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10
[2020-10-16 10:51:25,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:25,676 INFO L225 Difference]: With dead ends: 54
[2020-10-16 10:51:25,676 INFO L226 Difference]: Without dead ends: 43
[2020-10-16 10:51:25,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72
[2020-10-16 10:51:25,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2020-10-16 10:51:25,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 34.
[2020-10-16 10:51:25,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2020-10-16 10:51:25,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 80 transitions.
[2020-10-16 10:51:25,682 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 80 transitions. Word has length 10
[2020-10-16 10:51:25,682 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:25,682 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 80 transitions.
[2020-10-16 10:51:25,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-10-16 10:51:25,683 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 80 transitions.
[2020-10-16 10:51:25,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2020-10-16 10:51:25,683 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:25,684 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:25,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-16 10:51:25,684 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:25,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:25,685 INFO L82 PathProgramCache]: Analyzing trace with hash 447691255, now seen corresponding path program 3 times
[2020-10-16 10:51:25,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:25,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850488904]
[2020-10-16 10:51:25,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:25,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:25,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850488904]
[2020-10-16 10:51:25,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-16 10:51:25,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-10-16 10:51:25,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542930882]
[2020-10-16 10:51:25,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-10-16 10:51:25,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:25,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-10-16 10:51:25,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-10-16 10:51:25,750 INFO L87 Difference]: Start difference. First operand 34 states and 80 transitions. Second operand 6 states.
[2020-10-16 10:51:25,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:25,822 INFO L93 Difference]: Finished difference Result 57 states and 133 transitions.
[2020-10-16 10:51:25,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2020-10-16 10:51:25,822 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10
[2020-10-16 10:51:25,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:25,823 INFO L225 Difference]: With dead ends: 57
[2020-10-16 10:51:25,823 INFO L226 Difference]: Without dead ends: 51
[2020-10-16 10:51:25,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72
[2020-10-16 10:51:25,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2020-10-16 10:51:25,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 40.
[2020-10-16 10:51:25,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states.
[2020-10-16 10:51:25,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 97 transitions.
[2020-10-16 10:51:25,830 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 97 transitions. Word has length 10
[2020-10-16 10:51:25,830 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:25,830 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 97 transitions.
[2020-10-16 10:51:25,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-10-16 10:51:25,830 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 97 transitions.
[2020-10-16 10:51:25,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2020-10-16 10:51:25,831 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:25,831 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:25,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-10-16 10:51:25,832 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:25,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:25,832 INFO L82 PathProgramCache]: Analyzing trace with hash 211540140, now seen corresponding path program 4 times
[2020-10-16 10:51:25,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:25,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903443011]
[2020-10-16 10:51:25,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:25,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:25,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903443011]
[2020-10-16 10:51:25,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314091497]
[2020-10-16 10:51:25,895 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:25,950 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 10:51:25,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:51:25,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjunts are in the unsatisfiable core
[2020-10-16 10:51:25,959 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:26,003 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-10-16 10:51:26,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:26,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:26,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6
[2020-10-16 10:51:26,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884192431]
[2020-10-16 10:51:26,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-16 10:51:26,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:26,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-16 10:51:26,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2020-10-16 10:51:26,019 INFO L87 Difference]: Start difference. First operand 40 states and 97 transitions. Second operand 8 states.
[2020-10-16 10:51:26,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:26,148 INFO L93 Difference]: Finished difference Result 48 states and 117 transitions.
[2020-10-16 10:51:26,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2020-10-16 10:51:26,149 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11
[2020-10-16 10:51:26,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:26,150 INFO L225 Difference]: With dead ends: 48
[2020-10-16 10:51:26,150 INFO L226 Difference]: Without dead ends: 43
[2020-10-16 10:51:26,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156
[2020-10-16 10:51:26,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2020-10-16 10:51:26,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 34.
[2020-10-16 10:51:26,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2020-10-16 10:51:26,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 82 transitions.
[2020-10-16 10:51:26,155 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 82 transitions. Word has length 11
[2020-10-16 10:51:26,155 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:26,155 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 82 transitions.
[2020-10-16 10:51:26,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-10-16 10:51:26,155 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 82 transitions.
[2020-10-16 10:51:26,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2020-10-16 10:51:26,156 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:26,156 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:26,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2020-10-16 10:51:26,367 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:26,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:26,368 INFO L82 PathProgramCache]: Analyzing trace with hash 976950295, now seen corresponding path program 5 times
[2020-10-16 10:51:26,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:26,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754732221]
[2020-10-16 10:51:26,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:26,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:26,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:26,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754732221]
[2020-10-16 10:51:26,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130566109]
[2020-10-16 10:51:26,449 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:26,499 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 10:51:26,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:51:26,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjunts are in the unsatisfiable core
[2020-10-16 10:51:26,502 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:26,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:26,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:26,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5
[2020-10-16 10:51:26,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072186581]
[2020-10-16 10:51:26,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-16 10:51:26,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:26,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-16 10:51:26,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-16 10:51:26,526 INFO L87 Difference]: Start difference. First operand 34 states and 82 transitions. Second operand 7 states.
[2020-10-16 10:51:26,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:26,593 INFO L93 Difference]: Finished difference Result 54 states and 125 transitions.
[2020-10-16 10:51:26,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2020-10-16 10:51:26,594 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11
[2020-10-16 10:51:26,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:26,595 INFO L225 Difference]: With dead ends: 54
[2020-10-16 10:51:26,595 INFO L226 Difference]: Without dead ends: 48
[2020-10-16 10:51:26,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90
[2020-10-16 10:51:26,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states.
[2020-10-16 10:51:26,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42.
[2020-10-16 10:51:26,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states.
[2020-10-16 10:51:26,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 101 transitions.
[2020-10-16 10:51:26,601 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 101 transitions. Word has length 11
[2020-10-16 10:51:26,601 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:26,601 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 101 transitions.
[2020-10-16 10:51:26,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-16 10:51:26,601 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 101 transitions.
[2020-10-16 10:51:26,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2020-10-16 10:51:26,602 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:26,602 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:26,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:26,816 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:26,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:26,817 INFO L82 PathProgramCache]: Analyzing trace with hash 993037435, now seen corresponding path program 6 times
[2020-10-16 10:51:26,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:26,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639017123]
[2020-10-16 10:51:26,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:26,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:26,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:26,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639017123]
[2020-10-16 10:51:26,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250729881]
[2020-10-16 10:51:26,881 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:26,937 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s)
[2020-10-16 10:51:26,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:51:26,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjunts are in the unsatisfiable core
[2020-10-16 10:51:26,940 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:26,959 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:51:26,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:26,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:26,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6
[2020-10-16 10:51:26,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815333545]
[2020-10-16 10:51:26,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-16 10:51:26,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:26,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-16 10:51:26,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-10-16 10:51:26,993 INFO L87 Difference]: Start difference. First operand 42 states and 101 transitions. Second operand 8 states.
[2020-10-16 10:51:27,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:27,125 INFO L93 Difference]: Finished difference Result 58 states and 133 transitions.
[2020-10-16 10:51:27,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2020-10-16 10:51:27,125 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11
[2020-10-16 10:51:27,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:27,126 INFO L225 Difference]: With dead ends: 58
[2020-10-16 10:51:27,126 INFO L226 Difference]: Without dead ends: 52
[2020-10-16 10:51:27,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132
[2020-10-16 10:51:27,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states.
[2020-10-16 10:51:27,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40.
[2020-10-16 10:51:27,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states.
[2020-10-16 10:51:27,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 97 transitions.
[2020-10-16 10:51:27,132 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 97 transitions. Word has length 11
[2020-10-16 10:51:27,132 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:27,132 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 97 transitions.
[2020-10-16 10:51:27,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-10-16 10:51:27,132 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 97 transitions.
[2020-10-16 10:51:27,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2020-10-16 10:51:27,133 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:27,133 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:27,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:27,345 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:27,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:27,346 INFO L82 PathProgramCache]: Analyzing trace with hash 993527545, now seen corresponding path program 7 times
[2020-10-16 10:51:27,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:27,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693507757]
[2020-10-16 10:51:27,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:27,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:27,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:27,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693507757]
[2020-10-16 10:51:27,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790173767]
[2020-10-16 10:51:27,405 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:27,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:27,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjunts are in the unsatisfiable core
[2020-10-16 10:51:27,459 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:27,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:27,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:27,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5
[2020-10-16 10:51:27,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394705918]
[2020-10-16 10:51:27,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-16 10:51:27,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:27,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-16 10:51:27,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2020-10-16 10:51:27,486 INFO L87 Difference]: Start difference. First operand 40 states and 97 transitions. Second operand 7 states.
[2020-10-16 10:51:27,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:27,640 INFO L93 Difference]: Finished difference Result 78 states and 183 transitions.
[2020-10-16 10:51:27,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2020-10-16 10:51:27,641 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11
[2020-10-16 10:51:27,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:27,642 INFO L225 Difference]: With dead ends: 78
[2020-10-16 10:51:27,642 INFO L226 Difference]: Without dead ends: 72
[2020-10-16 10:51:27,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156
[2020-10-16 10:51:27,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states.
[2020-10-16 10:51:27,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 46.
[2020-10-16 10:51:27,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states.
[2020-10-16 10:51:27,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 117 transitions.
[2020-10-16 10:51:27,648 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 117 transitions. Word has length 11
[2020-10-16 10:51:27,649 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:27,649 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 117 transitions.
[2020-10-16 10:51:27,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-16 10:51:27,649 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 117 transitions.
[2020-10-16 10:51:27,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2020-10-16 10:51:27,650 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:27,650 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:27,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:27,864 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:27,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:27,865 INFO L82 PathProgramCache]: Analyzing trace with hash 993544285, now seen corresponding path program 8 times
[2020-10-16 10:51:27,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:27,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785200486]
[2020-10-16 10:51:27,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:27,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:27,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:27,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785200486]
[2020-10-16 10:51:27,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17884298]
[2020-10-16 10:51:27,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:27,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 10:51:27,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:51:27,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjunts are in the unsatisfiable core
[2020-10-16 10:51:27,983 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:28,005 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:51:28,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:28,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:28,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6
[2020-10-16 10:51:28,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882220570]
[2020-10-16 10:51:28,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-16 10:51:28,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:28,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-16 10:51:28,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-10-16 10:51:28,017 INFO L87 Difference]: Start difference. First operand 46 states and 117 transitions. Second operand 8 states.
[2020-10-16 10:51:28,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:28,182 INFO L93 Difference]: Finished difference Result 62 states and 145 transitions.
[2020-10-16 10:51:28,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2020-10-16 10:51:28,183 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11
[2020-10-16 10:51:28,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:28,184 INFO L225 Difference]: With dead ends: 62
[2020-10-16 10:51:28,184 INFO L226 Difference]: Without dead ends: 54
[2020-10-16 10:51:28,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210
[2020-10-16 10:51:28,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states.
[2020-10-16 10:51:28,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 43.
[2020-10-16 10:51:28,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states.
[2020-10-16 10:51:28,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 105 transitions.
[2020-10-16 10:51:28,188 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 105 transitions. Word has length 11
[2020-10-16 10:51:28,188 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:28,189 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 105 transitions.
[2020-10-16 10:51:28,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-10-16 10:51:28,189 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 105 transitions.
[2020-10-16 10:51:28,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-16 10:51:28,190 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:28,190 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:28,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2020-10-16 10:51:28,401 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:28,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:28,401 INFO L82 PathProgramCache]: Analyzing trace with hash -2048766974, now seen corresponding path program 9 times
[2020-10-16 10:51:28,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:28,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147785771]
[2020-10-16 10:51:28,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:28,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:28,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:28,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147785771]
[2020-10-16 10:51:28,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233878622]
[2020-10-16 10:51:28,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:28,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2020-10-16 10:51:28,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:51:28,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core
[2020-10-16 10:51:28,508 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:28,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:28,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:28,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6
[2020-10-16 10:51:28,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112026928]
[2020-10-16 10:51:28,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-16 10:51:28,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:28,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-16 10:51:28,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2020-10-16 10:51:28,529 INFO L87 Difference]: Start difference. First operand 43 states and 105 transitions. Second operand 8 states.
[2020-10-16 10:51:28,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:28,625 INFO L93 Difference]: Finished difference Result 64 states and 147 transitions.
[2020-10-16 10:51:28,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2020-10-16 10:51:28,626 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12
[2020-10-16 10:51:28,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:28,627 INFO L225 Difference]: With dead ends: 64
[2020-10-16 10:51:28,627 INFO L226 Difference]: Without dead ends: 58
[2020-10-16 10:51:28,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156
[2020-10-16 10:51:28,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states.
[2020-10-16 10:51:28,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 45.
[2020-10-16 10:51:28,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states.
[2020-10-16 10:51:28,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 109 transitions.
[2020-10-16 10:51:28,632 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 109 transitions. Word has length 12
[2020-10-16 10:51:28,632 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:28,632 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 109 transitions.
[2020-10-16 10:51:28,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-10-16 10:51:28,632 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 109 transitions.
[2020-10-16 10:51:28,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-16 10:51:28,633 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:28,633 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:28,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:28,843 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:28,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:28,844 INFO L82 PathProgramCache]: Analyzing trace with hash -2032679834, now seen corresponding path program 10 times
[2020-10-16 10:51:28,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:28,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573573377]
[2020-10-16 10:51:28,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:28,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:28,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:28,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573573377]
[2020-10-16 10:51:28,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25147648]
[2020-10-16 10:51:28,935 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:28,990 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 10:51:28,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:51:28,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core
[2020-10-16 10:51:28,992 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:29,010 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:51:29,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:29,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:29,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7
[2020-10-16 10:51:29,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725212186]
[2020-10-16 10:51:29,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-10-16 10:51:29,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:29,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-10-16 10:51:29,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72
[2020-10-16 10:51:29,027 INFO L87 Difference]: Start difference. First operand 45 states and 109 transitions. Second operand 9 states.
[2020-10-16 10:51:29,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:29,202 INFO L93 Difference]: Finished difference Result 61 states and 141 transitions.
[2020-10-16 10:51:29,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2020-10-16 10:51:29,203 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12
[2020-10-16 10:51:29,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:29,203 INFO L225 Difference]: With dead ends: 61
[2020-10-16 10:51:29,204 INFO L226 Difference]: Without dead ends: 55
[2020-10-16 10:51:29,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240
[2020-10-16 10:51:29,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2020-10-16 10:51:29,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 44.
[2020-10-16 10:51:29,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states.
[2020-10-16 10:51:29,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 107 transitions.
[2020-10-16 10:51:29,208 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 107 transitions. Word has length 12
[2020-10-16 10:51:29,208 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:29,209 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 107 transitions.
[2020-10-16 10:51:29,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-10-16 10:51:29,209 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 107 transitions.
[2020-10-16 10:51:29,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-16 10:51:29,209 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:29,210 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:29,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:29,420 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:29,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:29,421 INFO L82 PathProgramCache]: Analyzing trace with hash -2032189724, now seen corresponding path program 11 times
[2020-10-16 10:51:29,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:29,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822997493]
[2020-10-16 10:51:29,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:29,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:29,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822997493]
[2020-10-16 10:51:29,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321797898]
[2020-10-16 10:51:29,510 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:29,558 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 10:51:29,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:51:29,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core
[2020-10-16 10:51:29,560 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:29,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:29,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:29,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6
[2020-10-16 10:51:29,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336169620]
[2020-10-16 10:51:29,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-16 10:51:29,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:29,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-16 10:51:29,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2020-10-16 10:51:29,582 INFO L87 Difference]: Start difference. First operand 44 states and 107 transitions. Second operand 8 states.
[2020-10-16 10:51:29,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:29,730 INFO L93 Difference]: Finished difference Result 77 states and 181 transitions.
[2020-10-16 10:51:29,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2020-10-16 10:51:29,731 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12
[2020-10-16 10:51:29,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:29,732 INFO L225 Difference]: With dead ends: 77
[2020-10-16 10:51:29,732 INFO L226 Difference]: Without dead ends: 71
[2020-10-16 10:51:29,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210
[2020-10-16 10:51:29,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states.
[2020-10-16 10:51:29,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 48.
[2020-10-16 10:51:29,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states.
[2020-10-16 10:51:29,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 121 transitions.
[2020-10-16 10:51:29,737 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 121 transitions. Word has length 12
[2020-10-16 10:51:29,737 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:29,737 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 121 transitions.
[2020-10-16 10:51:29,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-10-16 10:51:29,738 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 121 transitions.
[2020-10-16 10:51:29,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-16 10:51:29,738 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:29,739 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:29,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2020-10-16 10:51:29,952 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:29,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:29,953 INFO L82 PathProgramCache]: Analyzing trace with hash -2032172984, now seen corresponding path program 12 times
[2020-10-16 10:51:29,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:29,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376284293]
[2020-10-16 10:51:29,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:29,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:30,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:30,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376284293]
[2020-10-16 10:51:30,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824913923]
[2020-10-16 10:51:30,022 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:30,063 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s)
[2020-10-16 10:51:30,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:51:30,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core
[2020-10-16 10:51:30,065 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:30,089 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:51:30,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:30,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:30,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7
[2020-10-16 10:51:30,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201286402]
[2020-10-16 10:51:30,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-10-16 10:51:30,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:30,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-10-16 10:51:30,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72
[2020-10-16 10:51:30,099 INFO L87 Difference]: Start difference. First operand 48 states and 121 transitions. Second operand 9 states.
[2020-10-16 10:51:30,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:30,334 INFO L93 Difference]: Finished difference Result 58 states and 137 transitions.
[2020-10-16 10:51:30,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2020-10-16 10:51:30,335 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12
[2020-10-16 10:51:30,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:30,336 INFO L225 Difference]: With dead ends: 58
[2020-10-16 10:51:30,336 INFO L226 Difference]: Without dead ends: 50
[2020-10-16 10:51:30,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306
[2020-10-16 10:51:30,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states.
[2020-10-16 10:51:30,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 37.
[2020-10-16 10:51:30,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states.
[2020-10-16 10:51:30,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 88 transitions.
[2020-10-16 10:51:30,339 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 88 transitions. Word has length 12
[2020-10-16 10:51:30,340 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:30,340 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 88 transitions.
[2020-10-16 10:51:30,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-10-16 10:51:30,340 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 88 transitions.
[2020-10-16 10:51:30,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-16 10:51:30,341 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:30,341 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:30,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:30,550 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:30,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:30,551 INFO L82 PathProgramCache]: Analyzing trace with hash 735118070, now seen corresponding path program 13 times
[2020-10-16 10:51:30,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:30,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029283015]
[2020-10-16 10:51:30,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:30,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:30,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:30,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029283015]
[2020-10-16 10:51:30,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796743283]
[2020-10-16 10:51:30,623 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:30,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:30,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core
[2020-10-16 10:51:30,675 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:30,692 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-10-16 10:51:30,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:30,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:30,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7
[2020-10-16 10:51:30,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297011426]
[2020-10-16 10:51:30,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-10-16 10:51:30,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:30,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-10-16 10:51:30,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72
[2020-10-16 10:51:30,709 INFO L87 Difference]: Start difference. First operand 37 states and 88 transitions. Second operand 9 states.
[2020-10-16 10:51:30,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:30,901 INFO L93 Difference]: Finished difference Result 60 states and 143 transitions.
[2020-10-16 10:51:30,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2020-10-16 10:51:30,902 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12
[2020-10-16 10:51:30,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:30,902 INFO L225 Difference]: With dead ends: 60
[2020-10-16 10:51:30,902 INFO L226 Difference]: Without dead ends: 55
[2020-10-16 10:51:30,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306
[2020-10-16 10:51:30,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2020-10-16 10:51:30,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 46.
[2020-10-16 10:51:30,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states.
[2020-10-16 10:51:30,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 113 transitions.
[2020-10-16 10:51:30,907 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 113 transitions. Word has length 12
[2020-10-16 10:51:30,907 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:30,907 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 113 transitions.
[2020-10-16 10:51:30,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-10-16 10:51:30,907 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 113 transitions.
[2020-10-16 10:51:30,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 10:51:30,908 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:30,908 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:31,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2020-10-16 10:51:31,118 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:31,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:31,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1427163243, now seen corresponding path program 14 times
[2020-10-16 10:51:31,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:31,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17276770]
[2020-10-16 10:51:31,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:31,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:31,182 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:31,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17276770]
[2020-10-16 10:51:31,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324872899]
[2020-10-16 10:51:31,183 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:31,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 10:51:31,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:51:31,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-10-16 10:51:31,246 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:31,271 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-10-16 10:51:31,281 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:31,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:31,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8
[2020-10-16 10:51:31,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488490571]
[2020-10-16 10:51:31,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-10-16 10:51:31,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:31,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-10-16 10:51:31,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90
[2020-10-16 10:51:31,283 INFO L87 Difference]: Start difference. First operand 46 states and 113 transitions. Second operand 10 states.
[2020-10-16 10:51:31,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:31,482 INFO L93 Difference]: Finished difference Result 54 states and 133 transitions.
[2020-10-16 10:51:31,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2020-10-16 10:51:31,482 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13
[2020-10-16 10:51:31,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:31,483 INFO L225 Difference]: With dead ends: 54
[2020-10-16 10:51:31,483 INFO L226 Difference]: Without dead ends: 49
[2020-10-16 10:51:31,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342
[2020-10-16 10:51:31,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2020-10-16 10:51:31,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 38.
[2020-10-16 10:51:31,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states.
[2020-10-16 10:51:31,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 92 transitions.
[2020-10-16 10:51:31,487 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 92 transitions. Word has length 13
[2020-10-16 10:51:31,487 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:31,487 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 92 transitions.
[2020-10-16 10:51:31,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-10-16 10:51:31,488 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 92 transitions.
[2020-10-16 10:51:31,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 10:51:31,488 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:31,488 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:31,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15
[2020-10-16 10:51:31,698 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:31,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:31,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1748588394, now seen corresponding path program 15 times
[2020-10-16 10:51:31,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:31,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307138434]
[2020-10-16 10:51:31,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:31,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:31,781 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:31,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307138434]
[2020-10-16 10:51:31,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15154740]
[2020-10-16 10:51:31,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:31,835 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2020-10-16 10:51:31,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:51:31,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-10-16 10:51:31,838 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:31,852 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:31,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:31,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7
[2020-10-16 10:51:31,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594440167]
[2020-10-16 10:51:31,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-10-16 10:51:31,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:31,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-10-16 10:51:31,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2020-10-16 10:51:31,854 INFO L87 Difference]: Start difference. First operand 38 states and 92 transitions. Second operand 9 states.
[2020-10-16 10:51:31,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:31,956 INFO L93 Difference]: Finished difference Result 60 states and 139 transitions.
[2020-10-16 10:51:31,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2020-10-16 10:51:31,957 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13
[2020-10-16 10:51:31,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:31,958 INFO L225 Difference]: With dead ends: 60
[2020-10-16 10:51:31,959 INFO L226 Difference]: Without dead ends: 54
[2020-10-16 10:51:31,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182
[2020-10-16 10:51:31,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states.
[2020-10-16 10:51:31,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 46.
[2020-10-16 10:51:31,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states.
[2020-10-16 10:51:31,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 111 transitions.
[2020-10-16 10:51:31,963 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 111 transitions. Word has length 13
[2020-10-16 10:51:31,963 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:31,963 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 111 transitions.
[2020-10-16 10:51:31,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-10-16 10:51:31,963 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 111 transitions.
[2020-10-16 10:51:31,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 10:51:31,964 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:31,964 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:32,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2020-10-16 10:51:32,175 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:32,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:32,176 INFO L82 PathProgramCache]: Analyzing trace with hash 826251258, now seen corresponding path program 16 times
[2020-10-16 10:51:32,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:32,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88290143]
[2020-10-16 10:51:32,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:32,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:32,248 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:32,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88290143]
[2020-10-16 10:51:32,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499772348]
[2020-10-16 10:51:32,249 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:32,305 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 10:51:32,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:51:32,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-10-16 10:51:32,308 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:32,329 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:51:32,340 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:32,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:32,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8
[2020-10-16 10:51:32,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799843581]
[2020-10-16 10:51:32,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-10-16 10:51:32,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:32,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-10-16 10:51:32,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90
[2020-10-16 10:51:32,342 INFO L87 Difference]: Start difference. First operand 46 states and 111 transitions. Second operand 10 states.
[2020-10-16 10:51:32,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:32,476 INFO L93 Difference]: Finished difference Result 66 states and 151 transitions.
[2020-10-16 10:51:32,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2020-10-16 10:51:32,480 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13
[2020-10-16 10:51:32,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:32,481 INFO L225 Difference]: With dead ends: 66
[2020-10-16 10:51:32,481 INFO L226 Difference]: Without dead ends: 60
[2020-10-16 10:51:32,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240
[2020-10-16 10:51:32,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states.
[2020-10-16 10:51:32,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 44.
[2020-10-16 10:51:32,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states.
[2020-10-16 10:51:32,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 107 transitions.
[2020-10-16 10:51:32,485 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 107 transitions. Word has length 13
[2020-10-16 10:51:32,485 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:32,485 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 107 transitions.
[2020-10-16 10:51:32,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-10-16 10:51:32,485 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 107 transitions.
[2020-10-16 10:51:32,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 10:51:32,486 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:32,486 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:32,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2020-10-16 10:51:32,695 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:32,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:32,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1297246968, now seen corresponding path program 17 times
[2020-10-16 10:51:32,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:32,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97127488]
[2020-10-16 10:51:32,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:32,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:32,776 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:32,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97127488]
[2020-10-16 10:51:32,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159732428]
[2020-10-16 10:51:32,777 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:32,855 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2020-10-16 10:51:32,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:51:32,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-10-16 10:51:32,857 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:32,877 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:32,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:32,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7
[2020-10-16 10:51:32,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914671515]
[2020-10-16 10:51:32,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-10-16 10:51:32,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:32,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-10-16 10:51:32,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72
[2020-10-16 10:51:32,882 INFO L87 Difference]: Start difference. First operand 44 states and 107 transitions. Second operand 9 states.
[2020-10-16 10:51:33,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:33,033 INFO L93 Difference]: Finished difference Result 67 states and 155 transitions.
[2020-10-16 10:51:33,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2020-10-16 10:51:33,034 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13
[2020-10-16 10:51:33,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:33,034 INFO L225 Difference]: With dead ends: 67
[2020-10-16 10:51:33,035 INFO L226 Difference]: Without dead ends: 61
[2020-10-16 10:51:33,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272
[2020-10-16 10:51:33,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states.
[2020-10-16 10:51:33,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 47.
[2020-10-16 10:51:33,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states.
[2020-10-16 10:51:33,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 115 transitions.
[2020-10-16 10:51:33,038 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 115 transitions. Word has length 13
[2020-10-16 10:51:33,038 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:33,038 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 115 transitions.
[2020-10-16 10:51:33,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-10-16 10:51:33,038 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 115 transitions.
[2020-10-16 10:51:33,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 10:51:33,039 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:33,039 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:33,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:33,248 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:33,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:33,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1313334108, now seen corresponding path program 18 times
[2020-10-16 10:51:33,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:33,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015242014]
[2020-10-16 10:51:33,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:33,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:33,307 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:33,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015242014]
[2020-10-16 10:51:33,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442401772]
[2020-10-16 10:51:33,309 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:33,351 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2020-10-16 10:51:33,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:51:33,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-10-16 10:51:33,353 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:33,372 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:51:33,391 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:33,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:33,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8
[2020-10-16 10:51:33,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928500879]
[2020-10-16 10:51:33,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-10-16 10:51:33,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:33,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-10-16 10:51:33,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90
[2020-10-16 10:51:33,393 INFO L87 Difference]: Start difference. First operand 47 states and 115 transitions. Second operand 10 states.
[2020-10-16 10:51:33,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:33,596 INFO L93 Difference]: Finished difference Result 69 states and 159 transitions.
[2020-10-16 10:51:33,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2020-10-16 10:51:33,597 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13
[2020-10-16 10:51:33,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:33,597 INFO L225 Difference]: With dead ends: 69
[2020-10-16 10:51:33,598 INFO L226 Difference]: Without dead ends: 63
[2020-10-16 10:51:33,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342
[2020-10-16 10:51:33,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states.
[2020-10-16 10:51:33,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 46.
[2020-10-16 10:51:33,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states.
[2020-10-16 10:51:33,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 113 transitions.
[2020-10-16 10:51:33,602 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 113 transitions. Word has length 13
[2020-10-16 10:51:33,603 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:33,603 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 113 transitions.
[2020-10-16 10:51:33,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-10-16 10:51:33,603 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 113 transitions.
[2020-10-16 10:51:33,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 10:51:33,604 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:33,604 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:33,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:33,813 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:33,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:33,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1313824218, now seen corresponding path program 19 times
[2020-10-16 10:51:33,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:33,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888906737]
[2020-10-16 10:51:33,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:33,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:33,867 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:33,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888906737]
[2020-10-16 10:51:33,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212841686]
[2020-10-16 10:51:33,868 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:33,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:33,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-10-16 10:51:33,923 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:33,947 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:33,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:33,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7
[2020-10-16 10:51:33,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737073946]
[2020-10-16 10:51:33,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-10-16 10:51:33,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:33,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-10-16 10:51:33,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72
[2020-10-16 10:51:33,951 INFO L87 Difference]: Start difference. First operand 46 states and 113 transitions. Second operand 9 states.
[2020-10-16 10:51:34,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:34,140 INFO L93 Difference]: Finished difference Result 88 states and 207 transitions.
[2020-10-16 10:51:34,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2020-10-16 10:51:34,140 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13
[2020-10-16 10:51:34,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:34,141 INFO L225 Difference]: With dead ends: 88
[2020-10-16 10:51:34,142 INFO L226 Difference]: Without dead ends: 82
[2020-10-16 10:51:34,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=128, Invalid=252, Unknown=0, NotChecked=0, Total=380
[2020-10-16 10:51:34,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states.
[2020-10-16 10:51:34,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 52.
[2020-10-16 10:51:34,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states.
[2020-10-16 10:51:34,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 133 transitions.
[2020-10-16 10:51:34,146 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 133 transitions. Word has length 13
[2020-10-16 10:51:34,146 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:34,146 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 133 transitions.
[2020-10-16 10:51:34,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-10-16 10:51:34,146 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 133 transitions.
[2020-10-16 10:51:34,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 10:51:34,147 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:34,147 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:34,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:34,352 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:34,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:34,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1313840958, now seen corresponding path program 20 times
[2020-10-16 10:51:34,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:34,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105204310]
[2020-10-16 10:51:34,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:34,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:34,404 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:34,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105204310]
[2020-10-16 10:51:34,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302876674]
[2020-10-16 10:51:34,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:34,474 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 10:51:34,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:51:34,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-10-16 10:51:34,477 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:34,496 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:51:34,507 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:34,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:34,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8
[2020-10-16 10:51:34,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369483514]
[2020-10-16 10:51:34,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-10-16 10:51:34,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:34,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-10-16 10:51:34,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90
[2020-10-16 10:51:34,510 INFO L87 Difference]: Start difference. First operand 52 states and 133 transitions. Second operand 10 states.
[2020-10-16 10:51:34,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:34,736 INFO L93 Difference]: Finished difference Result 69 states and 163 transitions.
[2020-10-16 10:51:34,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2020-10-16 10:51:34,736 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13
[2020-10-16 10:51:34,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:34,737 INFO L225 Difference]: With dead ends: 69
[2020-10-16 10:51:34,737 INFO L226 Difference]: Without dead ends: 61
[2020-10-16 10:51:34,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420
[2020-10-16 10:51:34,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states.
[2020-10-16 10:51:34,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 49.
[2020-10-16 10:51:34,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states.
[2020-10-16 10:51:34,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 121 transitions.
[2020-10-16 10:51:34,740 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 121 transitions. Word has length 13
[2020-10-16 10:51:34,740 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:34,741 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 121 transitions.
[2020-10-16 10:51:34,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-10-16 10:51:34,741 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 121 transitions.
[2020-10-16 10:51:34,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-10-16 10:51:34,741 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:34,741 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:34,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21
[2020-10-16 10:51:34,950 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:34,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:34,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1770024511, now seen corresponding path program 21 times
[2020-10-16 10:51:34,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:34,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330202354]
[2020-10-16 10:51:34,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:34,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:35,056 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:35,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330202354]
[2020-10-16 10:51:35,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113948677]
[2020-10-16 10:51:35,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:35,100 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2020-10-16 10:51:35,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:51:35,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 10:51:35,102 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:35,115 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:35,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:35,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2020-10-16 10:51:35,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534977592]
[2020-10-16 10:51:35,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-10-16 10:51:35,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:35,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-10-16 10:51:35,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90
[2020-10-16 10:51:35,116 INFO L87 Difference]: Start difference. First operand 49 states and 121 transitions. Second operand 10 states.
[2020-10-16 10:51:35,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:35,264 INFO L93 Difference]: Finished difference Result 74 states and 171 transitions.
[2020-10-16 10:51:35,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2020-10-16 10:51:35,265 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14
[2020-10-16 10:51:35,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:35,265 INFO L225 Difference]: With dead ends: 74
[2020-10-16 10:51:35,266 INFO L226 Difference]: Without dead ends: 68
[2020-10-16 10:51:35,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272
[2020-10-16 10:51:35,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states.
[2020-10-16 10:51:35,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 51.
[2020-10-16 10:51:35,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states.
[2020-10-16 10:51:35,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 125 transitions.
[2020-10-16 10:51:35,270 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 125 transitions. Word has length 14
[2020-10-16 10:51:35,270 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:35,270 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 125 transitions.
[2020-10-16 10:51:35,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-10-16 10:51:35,270 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 125 transitions.
[2020-10-16 10:51:35,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-10-16 10:51:35,271 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:35,271 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:35,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22
[2020-10-16 10:51:35,476 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:35,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:35,476 INFO L82 PathProgramCache]: Analyzing trace with hash 804815141, now seen corresponding path program 22 times
[2020-10-16 10:51:35,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:35,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016026861]
[2020-10-16 10:51:35,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:35,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:35,550 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:35,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016026861]
[2020-10-16 10:51:35,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836153080]
[2020-10-16 10:51:35,551 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:35,612 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 10:51:35,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:51:35,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 10:51:35,614 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:35,638 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:51:35,651 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:35,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:35,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9
[2020-10-16 10:51:35,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981306252]
[2020-10-16 10:51:35,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-10-16 10:51:35,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:35,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-10-16 10:51:35,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2020-10-16 10:51:35,657 INFO L87 Difference]: Start difference. First operand 51 states and 125 transitions. Second operand 11 states.
[2020-10-16 10:51:35,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:35,871 INFO L93 Difference]: Finished difference Result 71 states and 165 transitions.
[2020-10-16 10:51:35,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2020-10-16 10:51:35,871 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14
[2020-10-16 10:51:35,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:35,872 INFO L225 Difference]: With dead ends: 71
[2020-10-16 10:51:35,872 INFO L226 Difference]: Without dead ends: 65
[2020-10-16 10:51:35,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380
[2020-10-16 10:51:35,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states.
[2020-10-16 10:51:35,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 50.
[2020-10-16 10:51:35,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states.
[2020-10-16 10:51:35,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 123 transitions.
[2020-10-16 10:51:35,875 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 123 transitions. Word has length 14
[2020-10-16 10:51:35,875 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:35,876 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 123 transitions.
[2020-10-16 10:51:35,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-10-16 10:51:35,876 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 123 transitions.
[2020-10-16 10:51:35,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-10-16 10:51:35,876 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:35,876 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:36,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23
[2020-10-16 10:51:36,077 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:36,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:36,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1275810851, now seen corresponding path program 23 times
[2020-10-16 10:51:36,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:36,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922839097]
[2020-10-16 10:51:36,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:36,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:36,179 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:36,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922839097]
[2020-10-16 10:51:36,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393910732]
[2020-10-16 10:51:36,180 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:36,233 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2020-10-16 10:51:36,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:51:36,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 10:51:36,236 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:36,265 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:36,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:36,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2020-10-16 10:51:36,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111910557]
[2020-10-16 10:51:36,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-10-16 10:51:36,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:36,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-10-16 10:51:36,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90
[2020-10-16 10:51:36,267 INFO L87 Difference]: Start difference. First operand 50 states and 123 transitions. Second operand 10 states.
[2020-10-16 10:51:36,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:36,450 INFO L93 Difference]: Finished difference Result 68 states and 159 transitions.
[2020-10-16 10:51:36,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2020-10-16 10:51:36,451 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14
[2020-10-16 10:51:36,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:36,452 INFO L225 Difference]: With dead ends: 68
[2020-10-16 10:51:36,452 INFO L226 Difference]: Without dead ends: 62
[2020-10-16 10:51:36,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342
[2020-10-16 10:51:36,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states.
[2020-10-16 10:51:36,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 51.
[2020-10-16 10:51:36,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states.
[2020-10-16 10:51:36,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 125 transitions.
[2020-10-16 10:51:36,456 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 125 transitions. Word has length 14
[2020-10-16 10:51:36,456 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:36,456 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 125 transitions.
[2020-10-16 10:51:36,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-10-16 10:51:36,456 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 125 transitions.
[2020-10-16 10:51:36,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-10-16 10:51:36,457 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:36,457 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:36,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24
[2020-10-16 10:51:36,666 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:36,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:36,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1291897991, now seen corresponding path program 24 times
[2020-10-16 10:51:36,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:36,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830348180]
[2020-10-16 10:51:36,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:36,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:36,731 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:36,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830348180]
[2020-10-16 10:51:36,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260877272]
[2020-10-16 10:51:36,732 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:36,809 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2020-10-16 10:51:36,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:51:36,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 10:51:36,812 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:36,844 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:51:36,854 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:36,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:36,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9
[2020-10-16 10:51:36,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645946478]
[2020-10-16 10:51:36,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-10-16 10:51:36,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:36,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-10-16 10:51:36,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110
[2020-10-16 10:51:36,856 INFO L87 Difference]: Start difference. First operand 51 states and 125 transitions. Second operand 11 states.
[2020-10-16 10:51:37,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:37,102 INFO L93 Difference]: Finished difference Result 67 states and 157 transitions.
[2020-10-16 10:51:37,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2020-10-16 10:51:37,108 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14
[2020-10-16 10:51:37,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:37,108 INFO L225 Difference]: With dead ends: 67
[2020-10-16 10:51:37,109 INFO L226 Difference]: Without dead ends: 61
[2020-10-16 10:51:37,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462
[2020-10-16 10:51:37,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states.
[2020-10-16 10:51:37,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 50.
[2020-10-16 10:51:37,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states.
[2020-10-16 10:51:37,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 123 transitions.
[2020-10-16 10:51:37,112 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 123 transitions. Word has length 14
[2020-10-16 10:51:37,113 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:37,113 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 123 transitions.
[2020-10-16 10:51:37,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-10-16 10:51:37,113 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 123 transitions.
[2020-10-16 10:51:37,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-10-16 10:51:37,115 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:37,115 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:37,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25
[2020-10-16 10:51:37,321 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:37,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:37,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1292388101, now seen corresponding path program 25 times
[2020-10-16 10:51:37,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:37,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733457264]
[2020-10-16 10:51:37,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:37,380 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:37,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733457264]
[2020-10-16 10:51:37,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113850681]
[2020-10-16 10:51:37,381 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:37,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:37,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 10:51:37,432 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:37,449 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:37,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:37,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2020-10-16 10:51:37,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965932662]
[2020-10-16 10:51:37,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-10-16 10:51:37,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:37,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-10-16 10:51:37,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90
[2020-10-16 10:51:37,450 INFO L87 Difference]: Start difference. First operand 50 states and 123 transitions. Second operand 10 states.
[2020-10-16 10:51:37,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:37,667 INFO L93 Difference]: Finished difference Result 83 states and 197 transitions.
[2020-10-16 10:51:37,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2020-10-16 10:51:37,668 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14
[2020-10-16 10:51:37,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:37,669 INFO L225 Difference]: With dead ends: 83
[2020-10-16 10:51:37,669 INFO L226 Difference]: Without dead ends: 77
[2020-10-16 10:51:37,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420
[2020-10-16 10:51:37,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states.
[2020-10-16 10:51:37,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 54.
[2020-10-16 10:51:37,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states.
[2020-10-16 10:51:37,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 137 transitions.
[2020-10-16 10:51:37,672 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 137 transitions. Word has length 14
[2020-10-16 10:51:37,672 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:37,672 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 137 transitions.
[2020-10-16 10:51:37,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-10-16 10:51:37,672 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 137 transitions.
[2020-10-16 10:51:37,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-10-16 10:51:37,673 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:37,673 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:37,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:37,874 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:37,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:37,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1292404841, now seen corresponding path program 26 times
[2020-10-16 10:51:37,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:37,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565328565]
[2020-10-16 10:51:37,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:37,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:37,941 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:37,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565328565]
[2020-10-16 10:51:37,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944278773]
[2020-10-16 10:51:37,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:37,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 10:51:37,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:51:37,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 10:51:37,995 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:38,019 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:38,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:38,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9
[2020-10-16 10:51:38,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206861509]
[2020-10-16 10:51:38,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-10-16 10:51:38,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:38,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-10-16 10:51:38,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2020-10-16 10:51:38,022 INFO L87 Difference]: Start difference. First operand 54 states and 137 transitions. Second operand 11 states.
[2020-10-16 10:51:38,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:38,282 INFO L93 Difference]: Finished difference Result 62 states and 149 transitions.
[2020-10-16 10:51:38,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2020-10-16 10:51:38,283 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14
[2020-10-16 10:51:38,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:38,284 INFO L225 Difference]: With dead ends: 62
[2020-10-16 10:51:38,284 INFO L226 Difference]: Without dead ends: 54
[2020-10-16 10:51:38,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462
[2020-10-16 10:51:38,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states.
[2020-10-16 10:51:38,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 41.
[2020-10-16 10:51:38,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states.
[2020-10-16 10:51:38,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 98 transitions.
[2020-10-16 10:51:38,287 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 98 transitions. Word has length 14
[2020-10-16 10:51:38,287 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:38,287 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 98 transitions.
[2020-10-16 10:51:38,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-10-16 10:51:38,287 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 98 transitions.
[2020-10-16 10:51:38,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-10-16 10:51:38,288 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:38,288 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:38,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27
[2020-10-16 10:51:38,490 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:38,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:38,490 INFO L82 PathProgramCache]: Analyzing trace with hash 2074380341, now seen corresponding path program 27 times
[2020-10-16 10:51:38,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:38,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741963463]
[2020-10-16 10:51:38,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:38,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:38,557 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:38,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741963463]
[2020-10-16 10:51:38,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059246475]
[2020-10-16 10:51:38,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:38,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2020-10-16 10:51:38,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:51:38,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 10:51:38,601 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:38,617 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-10-16 10:51:38,627 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:38,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:38,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9
[2020-10-16 10:51:38,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794088851]
[2020-10-16 10:51:38,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-10-16 10:51:38,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:38,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-10-16 10:51:38,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110
[2020-10-16 10:51:38,630 INFO L87 Difference]: Start difference. First operand 41 states and 98 transitions. Second operand 11 states.
[2020-10-16 10:51:38,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:38,912 INFO L93 Difference]: Finished difference Result 68 states and 163 transitions.
[2020-10-16 10:51:38,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2020-10-16 10:51:38,912 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14
[2020-10-16 10:51:38,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:38,913 INFO L225 Difference]: With dead ends: 68
[2020-10-16 10:51:38,913 INFO L226 Difference]: Without dead ends: 63
[2020-10-16 10:51:38,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=193, Invalid=359, Unknown=0, NotChecked=0, Total=552
[2020-10-16 10:51:38,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states.
[2020-10-16 10:51:38,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 52.
[2020-10-16 10:51:38,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states.
[2020-10-16 10:51:38,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 129 transitions.
[2020-10-16 10:51:38,917 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 129 transitions. Word has length 14
[2020-10-16 10:51:38,918 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:38,918 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 129 transitions.
[2020-10-16 10:51:38,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-10-16 10:51:38,918 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 129 transitions.
[2020-10-16 10:51:38,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2020-10-16 10:51:38,918 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:38,919 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:39,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28
[2020-10-16 10:51:39,129 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:39,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:39,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1409860714, now seen corresponding path program 28 times
[2020-10-16 10:51:39,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:39,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168499510]
[2020-10-16 10:51:39,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:39,199 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:39,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168499510]
[2020-10-16 10:51:39,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372587335]
[2020-10-16 10:51:39,199 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:39,240 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 10:51:39,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:51:39,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 10:51:39,241 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:39,258 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-10-16 10:51:39,269 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:39,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:39,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10
[2020-10-16 10:51:39,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916120443]
[2020-10-16 10:51:39,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states
[2020-10-16 10:51:39,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:39,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2020-10-16 10:51:39,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132
[2020-10-16 10:51:39,271 INFO L87 Difference]: Start difference. First operand 52 states and 129 transitions. Second operand 12 states.
[2020-10-16 10:51:39,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:39,581 INFO L93 Difference]: Finished difference Result 60 states and 149 transitions.
[2020-10-16 10:51:39,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2020-10-16 10:51:39,582 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15
[2020-10-16 10:51:39,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:39,583 INFO L225 Difference]: With dead ends: 60
[2020-10-16 10:51:39,583 INFO L226 Difference]: Without dead ends: 55
[2020-10-16 10:51:39,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=205, Invalid=395, Unknown=0, NotChecked=0, Total=600
[2020-10-16 10:51:39,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2020-10-16 10:51:39,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 42.
[2020-10-16 10:51:39,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states.
[2020-10-16 10:51:39,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 102 transitions.
[2020-10-16 10:51:39,587 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 102 transitions. Word has length 15
[2020-10-16 10:51:39,587 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:39,587 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 102 transitions.
[2020-10-16 10:51:39,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states.
[2020-10-16 10:51:39,588 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 102 transitions.
[2020-10-16 10:51:39,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2020-10-16 10:51:39,588 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:39,588 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:39,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:39,798 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:39,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:39,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1061217963, now seen corresponding path program 29 times
[2020-10-16 10:51:39,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:39,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144486233]
[2020-10-16 10:51:39,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:39,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:39,887 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:39,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144486233]
[2020-10-16 10:51:39,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676968608]
[2020-10-16 10:51:39,888 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:39,952 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s)
[2020-10-16 10:51:39,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:51:39,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 10:51:39,954 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:39,979 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:39,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:39,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2020-10-16 10:51:39,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966518247]
[2020-10-16 10:51:39,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-10-16 10:51:39,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:39,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-10-16 10:51:39,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110
[2020-10-16 10:51:39,982 INFO L87 Difference]: Start difference. First operand 42 states and 102 transitions. Second operand 11 states.
[2020-10-16 10:51:40,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:40,136 INFO L93 Difference]: Finished difference Result 66 states and 153 transitions.
[2020-10-16 10:51:40,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2020-10-16 10:51:40,137 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15
[2020-10-16 10:51:40,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:40,138 INFO L225 Difference]: With dead ends: 66
[2020-10-16 10:51:40,138 INFO L226 Difference]: Without dead ends: 60
[2020-10-16 10:51:40,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306
[2020-10-16 10:51:40,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states.
[2020-10-16 10:51:40,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 50.
[2020-10-16 10:51:40,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states.
[2020-10-16 10:51:40,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 121 transitions.
[2020-10-16 10:51:40,141 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 121 transitions. Word has length 15
[2020-10-16 10:51:40,141 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:40,141 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 121 transitions.
[2020-10-16 10:51:40,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-10-16 10:51:40,142 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 121 transitions.
[2020-10-16 10:51:40,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2020-10-16 10:51:40,143 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:40,143 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:40,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:40,352 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:40,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:40,353 INFO L82 PathProgramCache]: Analyzing trace with hash -541474887, now seen corresponding path program 30 times
[2020-10-16 10:51:40,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:40,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3038690]
[2020-10-16 10:51:40,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:40,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:40,453 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:40,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3038690]
[2020-10-16 10:51:40,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391860863]
[2020-10-16 10:51:40,454 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:40,498 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s)
[2020-10-16 10:51:40,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:51:40,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 10:51:40,500 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:40,516 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:51:40,529 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:40,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:40,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10
[2020-10-16 10:51:40,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217565618]
[2020-10-16 10:51:40,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states
[2020-10-16 10:51:40,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:40,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2020-10-16 10:51:40,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132
[2020-10-16 10:51:40,531 INFO L87 Difference]: Start difference. First operand 50 states and 121 transitions. Second operand 12 states.
[2020-10-16 10:51:40,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:40,721 INFO L93 Difference]: Finished difference Result 74 states and 169 transitions.
[2020-10-16 10:51:40,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2020-10-16 10:51:40,722 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15
[2020-10-16 10:51:40,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:40,723 INFO L225 Difference]: With dead ends: 74
[2020-10-16 10:51:40,723 INFO L226 Difference]: Without dead ends: 68
[2020-10-16 10:51:40,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380
[2020-10-16 10:51:40,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states.
[2020-10-16 10:51:40,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 48.
[2020-10-16 10:51:40,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states.
[2020-10-16 10:51:40,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 117 transitions.
[2020-10-16 10:51:40,725 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 117 transitions. Word has length 15
[2020-10-16 10:51:40,725 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:40,726 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 117 transitions.
[2020-10-16 10:51:40,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states.
[2020-10-16 10:51:40,726 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 117 transitions.
[2020-10-16 10:51:40,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2020-10-16 10:51:40,726 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:40,726 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:40,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31
[2020-10-16 10:51:40,933 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:40,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:40,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1113836343, now seen corresponding path program 31 times
[2020-10-16 10:51:40,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:40,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924389470]
[2020-10-16 10:51:40,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:40,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:41,016 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:41,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924389470]
[2020-10-16 10:51:41,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413597326]
[2020-10-16 10:51:41,017 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:41,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:41,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 10:51:41,063 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:41,075 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:41,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:41,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2020-10-16 10:51:41,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298452279]
[2020-10-16 10:51:41,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-10-16 10:51:41,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:41,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-10-16 10:51:41,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110
[2020-10-16 10:51:41,078 INFO L87 Difference]: Start difference. First operand 48 states and 117 transitions. Second operand 11 states.
[2020-10-16 10:51:41,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:41,274 INFO L93 Difference]: Finished difference Result 75 states and 173 transitions.
[2020-10-16 10:51:41,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2020-10-16 10:51:41,274 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15
[2020-10-16 10:51:41,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:41,275 INFO L225 Difference]: With dead ends: 75
[2020-10-16 10:51:41,275 INFO L226 Difference]: Without dead ends: 69
[2020-10-16 10:51:41,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420
[2020-10-16 10:51:41,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states.
[2020-10-16 10:51:41,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 51.
[2020-10-16 10:51:41,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states.
[2020-10-16 10:51:41,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 125 transitions.
[2020-10-16 10:51:41,280 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 125 transitions. Word has length 15
[2020-10-16 10:51:41,281 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:41,281 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 125 transitions.
[2020-10-16 10:51:41,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-10-16 10:51:41,281 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 125 transitions.
[2020-10-16 10:51:41,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2020-10-16 10:51:41,281 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:41,281 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:41,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:41,491 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:41,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:41,491 INFO L82 PathProgramCache]: Analyzing trace with hash -606291301, now seen corresponding path program 32 times
[2020-10-16 10:51:41,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:41,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370601284]
[2020-10-16 10:51:41,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:41,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:41,571 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:41,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370601284]
[2020-10-16 10:51:41,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454155892]
[2020-10-16 10:51:41,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:41,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 10:51:41,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:51:41,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 10:51:41,646 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:41,665 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:51:41,677 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:41,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:41,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10
[2020-10-16 10:51:41,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407156795]
[2020-10-16 10:51:41,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states
[2020-10-16 10:51:41,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:41,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2020-10-16 10:51:41,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132
[2020-10-16 10:51:41,680 INFO L87 Difference]: Start difference. First operand 51 states and 125 transitions. Second operand 12 states.
[2020-10-16 10:51:41,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:41,944 INFO L93 Difference]: Finished difference Result 79 states and 181 transitions.
[2020-10-16 10:51:41,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2020-10-16 10:51:41,944 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15
[2020-10-16 10:51:41,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:41,945 INFO L225 Difference]: With dead ends: 79
[2020-10-16 10:51:41,945 INFO L226 Difference]: Without dead ends: 73
[2020-10-16 10:51:41,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506
[2020-10-16 10:51:41,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states.
[2020-10-16 10:51:41,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 50.
[2020-10-16 10:51:41,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states.
[2020-10-16 10:51:41,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 123 transitions.
[2020-10-16 10:51:41,948 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 123 transitions. Word has length 15
[2020-10-16 10:51:41,949 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:41,949 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 123 transitions.
[2020-10-16 10:51:41,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states.
[2020-10-16 10:51:41,949 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 123 transitions.
[2020-10-16 10:51:41,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2020-10-16 10:51:41,949 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:41,950 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:42,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33
[2020-10-16 10:51:42,159 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:42,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:42,160 INFO L82 PathProgramCache]: Analyzing trace with hash -135295591, now seen corresponding path program 33 times
[2020-10-16 10:51:42,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:42,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260217410]
[2020-10-16 10:51:42,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:42,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:42,257 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:42,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260217410]
[2020-10-16 10:51:42,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629572862]
[2020-10-16 10:51:42,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:42,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2020-10-16 10:51:42,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:51:42,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 10:51:42,321 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:42,336 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:42,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:42,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2020-10-16 10:51:42,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854041070]
[2020-10-16 10:51:42,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-10-16 10:51:42,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:42,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-10-16 10:51:42,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2020-10-16 10:51:42,338 INFO L87 Difference]: Start difference. First operand 50 states and 123 transitions. Second operand 11 states.
[2020-10-16 10:51:42,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:42,651 INFO L93 Difference]: Finished difference Result 79 states and 183 transitions.
[2020-10-16 10:51:42,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2020-10-16 10:51:42,652 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15
[2020-10-16 10:51:42,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:42,653 INFO L225 Difference]: With dead ends: 79
[2020-10-16 10:51:42,653 INFO L226 Difference]: Without dead ends: 73
[2020-10-16 10:51:42,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552
[2020-10-16 10:51:42,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states.
[2020-10-16 10:51:42,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 53.
[2020-10-16 10:51:42,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states.
[2020-10-16 10:51:42,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 131 transitions.
[2020-10-16 10:51:42,658 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 131 transitions. Word has length 15
[2020-10-16 10:51:42,658 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:42,658 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 131 transitions.
[2020-10-16 10:51:42,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-10-16 10:51:42,659 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 131 transitions.
[2020-10-16 10:51:42,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2020-10-16 10:51:42,659 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:42,660 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:42,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:42,870 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:42,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:42,871 INFO L82 PathProgramCache]: Analyzing trace with hash -119208451, now seen corresponding path program 34 times
[2020-10-16 10:51:42,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:42,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530083676]
[2020-10-16 10:51:42,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:42,945 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:42,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530083676]
[2020-10-16 10:51:42,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423968468]
[2020-10-16 10:51:42,946 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:42,990 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 10:51:42,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:51:42,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 10:51:42,992 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:43,011 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:51:43,022 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:43,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:43,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10
[2020-10-16 10:51:43,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445613790]
[2020-10-16 10:51:43,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states
[2020-10-16 10:51:43,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:43,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2020-10-16 10:51:43,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132
[2020-10-16 10:51:43,024 INFO L87 Difference]: Start difference. First operand 53 states and 131 transitions. Second operand 12 states.
[2020-10-16 10:51:43,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:43,371 INFO L93 Difference]: Finished difference Result 76 states and 177 transitions.
[2020-10-16 10:51:43,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2020-10-16 10:51:43,372 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15
[2020-10-16 10:51:43,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:43,373 INFO L225 Difference]: With dead ends: 76
[2020-10-16 10:51:43,373 INFO L226 Difference]: Without dead ends: 70
[2020-10-16 10:51:43,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=178, Invalid=422, Unknown=0, NotChecked=0, Total=600
[2020-10-16 10:51:43,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states.
[2020-10-16 10:51:43,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 52.
[2020-10-16 10:51:43,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states.
[2020-10-16 10:51:43,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 129 transitions.
[2020-10-16 10:51:43,378 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 129 transitions. Word has length 15
[2020-10-16 10:51:43,378 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:43,378 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 129 transitions.
[2020-10-16 10:51:43,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states.
[2020-10-16 10:51:43,379 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 129 transitions.
[2020-10-16 10:51:43,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2020-10-16 10:51:43,380 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:43,380 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:43,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35
[2020-10-16 10:51:43,591 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:43,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:43,592 INFO L82 PathProgramCache]: Analyzing trace with hash -118718341, now seen corresponding path program 35 times
[2020-10-16 10:51:43,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:43,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913722704]
[2020-10-16 10:51:43,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:43,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:43,719 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:43,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913722704]
[2020-10-16 10:51:43,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730719761]
[2020-10-16 10:51:43,720 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:43,785 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s)
[2020-10-16 10:51:43,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:51:43,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 10:51:43,788 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:43,805 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:43,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:43,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2020-10-16 10:51:43,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007190978]
[2020-10-16 10:51:43,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-10-16 10:51:43,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:43,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-10-16 10:51:43,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110
[2020-10-16 10:51:43,807 INFO L87 Difference]: Start difference. First operand 52 states and 129 transitions. Second operand 11 states.
[2020-10-16 10:51:44,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:44,175 INFO L93 Difference]: Finished difference Result 96 states and 227 transitions.
[2020-10-16 10:51:44,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states.
[2020-10-16 10:51:44,176 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15
[2020-10-16 10:51:44,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:44,178 INFO L225 Difference]: With dead ends: 96
[2020-10-16 10:51:44,178 INFO L226 Difference]: Without dead ends: 90
[2020-10-16 10:51:44,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=216, Invalid=434, Unknown=0, NotChecked=0, Total=650
[2020-10-16 10:51:44,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states.
[2020-10-16 10:51:44,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 58.
[2020-10-16 10:51:44,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states.
[2020-10-16 10:51:44,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 149 transitions.
[2020-10-16 10:51:44,183 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 149 transitions. Word has length 15
[2020-10-16 10:51:44,184 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:44,184 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 149 transitions.
[2020-10-16 10:51:44,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-10-16 10:51:44,184 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 149 transitions.
[2020-10-16 10:51:44,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2020-10-16 10:51:44,185 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:44,185 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:44,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36
[2020-10-16 10:51:44,386 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:44,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:44,386 INFO L82 PathProgramCache]: Analyzing trace with hash -118701601, now seen corresponding path program 36 times
[2020-10-16 10:51:44,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:44,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145788537]
[2020-10-16 10:51:44,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:44,469 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:44,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145788537]
[2020-10-16 10:51:44,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551326091]
[2020-10-16 10:51:44,470 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:44,523 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s)
[2020-10-16 10:51:44,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:51:44,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 10:51:44,525 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:44,543 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:51:44,553 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:44,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:44,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10
[2020-10-16 10:51:44,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957018968]
[2020-10-16 10:51:44,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states
[2020-10-16 10:51:44,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:44,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2020-10-16 10:51:44,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132
[2020-10-16 10:51:44,555 INFO L87 Difference]: Start difference. First operand 58 states and 149 transitions. Second operand 12 states.
[2020-10-16 10:51:44,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:44,917 INFO L93 Difference]: Finished difference Result 77 states and 183 transitions.
[2020-10-16 10:51:44,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2020-10-16 10:51:44,918 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15
[2020-10-16 10:51:44,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:44,919 INFO L225 Difference]: With dead ends: 77
[2020-10-16 10:51:44,919 INFO L226 Difference]: Without dead ends: 69
[2020-10-16 10:51:44,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=227, Invalid=475, Unknown=0, NotChecked=0, Total=702
[2020-10-16 10:51:44,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states.
[2020-10-16 10:51:44,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 55.
[2020-10-16 10:51:44,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states.
[2020-10-16 10:51:44,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 137 transitions.
[2020-10-16 10:51:44,925 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 137 transitions. Word has length 15
[2020-10-16 10:51:44,926 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:44,926 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 137 transitions.
[2020-10-16 10:51:44,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states.
[2020-10-16 10:51:44,926 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 137 transitions.
[2020-10-16 10:51:44,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2020-10-16 10:51:44,927 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:44,927 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:45,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37
[2020-10-16 10:51:45,133 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:45,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:45,133 INFO L82 PathProgramCache]: Analyzing trace with hash -186489920, now seen corresponding path program 37 times
[2020-10-16 10:51:45,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:45,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845992244]
[2020-10-16 10:51:45,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:45,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:45,231 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:45,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845992244]
[2020-10-16 10:51:45,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691206294]
[2020-10-16 10:51:45,232 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:45,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:45,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjunts are in the unsatisfiable core
[2020-10-16 10:51:45,274 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:45,285 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:45,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:45,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2020-10-16 10:51:45,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581599691]
[2020-10-16 10:51:45,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states
[2020-10-16 10:51:45,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:45,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2020-10-16 10:51:45,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132
[2020-10-16 10:51:45,287 INFO L87 Difference]: Start difference. First operand 55 states and 137 transitions. Second operand 12 states.
[2020-10-16 10:51:45,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:45,478 INFO L93 Difference]: Finished difference Result 84 states and 195 transitions.
[2020-10-16 10:51:45,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2020-10-16 10:51:45,479 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 16
[2020-10-16 10:51:45,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:45,480 INFO L225 Difference]: With dead ends: 84
[2020-10-16 10:51:45,480 INFO L226 Difference]: Without dead ends: 78
[2020-10-16 10:51:45,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420
[2020-10-16 10:51:45,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states.
[2020-10-16 10:51:45,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 57.
[2020-10-16 10:51:45,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states.
[2020-10-16 10:51:45,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 141 transitions.
[2020-10-16 10:51:45,484 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 141 transitions. Word has length 16
[2020-10-16 10:51:45,485 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:45,485 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 141 transitions.
[2020-10-16 10:51:45,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states.
[2020-10-16 10:51:45,485 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 141 transitions.
[2020-10-16 10:51:45,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2020-10-16 10:51:45,486 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:45,486 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:45,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38
[2020-10-16 10:51:45,687 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:45,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:45,687 INFO L82 PathProgramCache]: Analyzing trace with hash 333253156, now seen corresponding path program 38 times
[2020-10-16 10:51:45,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:45,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176182699]
[2020-10-16 10:51:45,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:45,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:45,802 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:45,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176182699]
[2020-10-16 10:51:45,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755394722]
[2020-10-16 10:51:45,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:45,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 10:51:45,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:51:45,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjunts are in the unsatisfiable core
[2020-10-16 10:51:45,861 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:45,898 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:51:45,911 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:45,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:45,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11
[2020-10-16 10:51:45,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547097796]
[2020-10-16 10:51:45,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 10:51:45,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:45,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 10:51:45,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156
[2020-10-16 10:51:45,913 INFO L87 Difference]: Start difference. First operand 57 states and 141 transitions. Second operand 13 states.
[2020-10-16 10:51:46,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:46,129 INFO L93 Difference]: Finished difference Result 81 states and 189 transitions.
[2020-10-16 10:51:46,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2020-10-16 10:51:46,129 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16
[2020-10-16 10:51:46,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:46,130 INFO L225 Difference]: With dead ends: 81
[2020-10-16 10:51:46,130 INFO L226 Difference]: Without dead ends: 75
[2020-10-16 10:51:46,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=161, Invalid=391, Unknown=0, NotChecked=0, Total=552
[2020-10-16 10:51:46,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states.
[2020-10-16 10:51:46,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 56.
[2020-10-16 10:51:46,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states.
[2020-10-16 10:51:46,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 139 transitions.
[2020-10-16 10:51:46,134 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 139 transitions. Word has length 16
[2020-10-16 10:51:46,134 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:46,134 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 139 transitions.
[2020-10-16 10:51:46,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 10:51:46,134 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 139 transitions.
[2020-10-16 10:51:46,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2020-10-16 10:51:46,135 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:46,135 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:46,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39
[2020-10-16 10:51:46,343 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:46,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:46,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1988564386, now seen corresponding path program 39 times
[2020-10-16 10:51:46,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:46,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710455027]
[2020-10-16 10:51:46,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:46,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:46,424 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:46,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710455027]
[2020-10-16 10:51:46,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962981779]
[2020-10-16 10:51:46,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:46,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2020-10-16 10:51:46,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:51:46,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjunts are in the unsatisfiable core
[2020-10-16 10:51:46,482 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:46,504 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:46,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:46,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2020-10-16 10:51:46,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665271845]
[2020-10-16 10:51:46,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states
[2020-10-16 10:51:46,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:46,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2020-10-16 10:51:46,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132
[2020-10-16 10:51:46,506 INFO L87 Difference]: Start difference. First operand 56 states and 139 transitions. Second operand 12 states.
[2020-10-16 10:51:46,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:46,739 INFO L93 Difference]: Finished difference Result 78 states and 183 transitions.
[2020-10-16 10:51:46,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2020-10-16 10:51:46,740 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 16
[2020-10-16 10:51:46,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:46,741 INFO L225 Difference]: With dead ends: 78
[2020-10-16 10:51:46,741 INFO L226 Difference]: Without dead ends: 72
[2020-10-16 10:51:46,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506
[2020-10-16 10:51:46,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states.
[2020-10-16 10:51:46,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 57.
[2020-10-16 10:51:46,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states.
[2020-10-16 10:51:46,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 141 transitions.
[2020-10-16 10:51:46,744 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 141 transitions. Word has length 16
[2020-10-16 10:51:46,744 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:46,744 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 141 transitions.
[2020-10-16 10:51:46,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states.
[2020-10-16 10:51:46,745 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 141 transitions.
[2020-10-16 10:51:46,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2020-10-16 10:51:46,745 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:46,745 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:46,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40
[2020-10-16 10:51:46,946 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:46,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:46,947 INFO L82 PathProgramCache]: Analyzing trace with hash 268436742, now seen corresponding path program 40 times
[2020-10-16 10:51:46,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:46,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014047011]
[2020-10-16 10:51:46,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:46,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:47,037 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:47,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014047011]
[2020-10-16 10:51:47,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346790022]
[2020-10-16 10:51:47,038 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:47,082 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 10:51:47,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:51:47,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjunts are in the unsatisfiable core
[2020-10-16 10:51:47,084 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:47,108 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:51:47,120 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:47,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:47,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11
[2020-10-16 10:51:47,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477113403]
[2020-10-16 10:51:47,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 10:51:47,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:47,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 10:51:47,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156
[2020-10-16 10:51:47,122 INFO L87 Difference]: Start difference. First operand 57 states and 141 transitions. Second operand 13 states.
[2020-10-16 10:51:47,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:47,442 INFO L93 Difference]: Finished difference Result 77 states and 181 transitions.
[2020-10-16 10:51:47,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2020-10-16 10:51:47,468 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16
[2020-10-16 10:51:47,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:47,469 INFO L225 Difference]: With dead ends: 77
[2020-10-16 10:51:47,469 INFO L226 Difference]: Without dead ends: 71
[2020-10-16 10:51:47,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=185, Invalid=465, Unknown=0, NotChecked=0, Total=650
[2020-10-16 10:51:47,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states.
[2020-10-16 10:51:47,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 56.
[2020-10-16 10:51:47,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states.
[2020-10-16 10:51:47,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 139 transitions.
[2020-10-16 10:51:47,472 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 139 transitions. Word has length 16
[2020-10-16 10:51:47,473 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:47,473 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 139 transitions.
[2020-10-16 10:51:47,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 10:51:47,473 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 139 transitions.
[2020-10-16 10:51:47,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2020-10-16 10:51:47,474 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:47,474 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:47,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41
[2020-10-16 10:51:47,683 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:47,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:47,683 INFO L82 PathProgramCache]: Analyzing trace with hash 739432452, now seen corresponding path program 41 times
[2020-10-16 10:51:47,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:47,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481078731]
[2020-10-16 10:51:47,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:47,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:47,769 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:47,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481078731]
[2020-10-16 10:51:47,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904093151]
[2020-10-16 10:51:47,770 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:47,813 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s)
[2020-10-16 10:51:47,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:51:47,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjunts are in the unsatisfiable core
[2020-10-16 10:51:47,815 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:47,839 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:47,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:47,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2020-10-16 10:51:47,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872235647]
[2020-10-16 10:51:47,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states
[2020-10-16 10:51:47,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:47,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2020-10-16 10:51:47,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132
[2020-10-16 10:51:47,841 INFO L87 Difference]: Start difference. First operand 56 states and 139 transitions. Second operand 12 states.
[2020-10-16 10:51:48,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:48,114 INFO L93 Difference]: Finished difference Result 74 states and 175 transitions.
[2020-10-16 10:51:48,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2020-10-16 10:51:48,114 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 16
[2020-10-16 10:51:48,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:48,115 INFO L225 Difference]: With dead ends: 74
[2020-10-16 10:51:48,116 INFO L226 Difference]: Without dead ends: 68
[2020-10-16 10:51:48,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=179, Invalid=421, Unknown=0, NotChecked=0, Total=600
[2020-10-16 10:51:48,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states.
[2020-10-16 10:51:48,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 57.
[2020-10-16 10:51:48,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states.
[2020-10-16 10:51:48,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 141 transitions.
[2020-10-16 10:51:48,120 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 141 transitions. Word has length 16
[2020-10-16 10:51:48,120 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:48,120 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 141 transitions.
[2020-10-16 10:51:48,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states.
[2020-10-16 10:51:48,120 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 141 transitions.
[2020-10-16 10:51:48,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2020-10-16 10:51:48,121 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:48,121 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:48,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:48,332 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:48,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:48,332 INFO L82 PathProgramCache]: Analyzing trace with hash 755519592, now seen corresponding path program 42 times
[2020-10-16 10:51:48,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:48,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939753244]
[2020-10-16 10:51:48,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:48,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:48,415 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:48,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939753244]
[2020-10-16 10:51:48,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424609349]
[2020-10-16 10:51:48,416 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:48,492 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s)
[2020-10-16 10:51:48,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:51:48,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjunts are in the unsatisfiable core
[2020-10-16 10:51:48,494 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:48,520 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:51:48,531 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:48,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:48,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11
[2020-10-16 10:51:48,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356360786]
[2020-10-16 10:51:48,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 10:51:48,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:48,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 10:51:48,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156
[2020-10-16 10:51:48,534 INFO L87 Difference]: Start difference. First operand 57 states and 141 transitions. Second operand 13 states.
[2020-10-16 10:51:48,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:48,997 INFO L93 Difference]: Finished difference Result 73 states and 173 transitions.
[2020-10-16 10:51:48,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2020-10-16 10:51:48,998 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16
[2020-10-16 10:51:48,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:48,998 INFO L225 Difference]: With dead ends: 73
[2020-10-16 10:51:48,999 INFO L226 Difference]: Without dead ends: 67
[2020-10-16 10:51:48,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=225, Invalid=531, Unknown=0, NotChecked=0, Total=756
[2020-10-16 10:51:49,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states.
[2020-10-16 10:51:49,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 56.
[2020-10-16 10:51:49,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states.
[2020-10-16 10:51:49,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 139 transitions.
[2020-10-16 10:51:49,003 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 139 transitions. Word has length 16
[2020-10-16 10:51:49,003 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:49,003 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 139 transitions.
[2020-10-16 10:51:49,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 10:51:49,003 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 139 transitions.
[2020-10-16 10:51:49,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2020-10-16 10:51:49,004 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:49,004 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:49,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43
[2020-10-16 10:51:49,211 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:49,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:49,212 INFO L82 PathProgramCache]: Analyzing trace with hash 756009702, now seen corresponding path program 43 times
[2020-10-16 10:51:49,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:49,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525636724]
[2020-10-16 10:51:49,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:49,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:49,295 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:49,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525636724]
[2020-10-16 10:51:49,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956004]
[2020-10-16 10:51:49,296 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:49,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:49,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjunts are in the unsatisfiable core
[2020-10-16 10:51:49,350 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:49,363 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:49,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:49,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2020-10-16 10:51:49,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001965310]
[2020-10-16 10:51:49,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states
[2020-10-16 10:51:49,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:49,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2020-10-16 10:51:49,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132
[2020-10-16 10:51:49,365 INFO L87 Difference]: Start difference. First operand 56 states and 139 transitions. Second operand 12 states.
[2020-10-16 10:51:49,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:49,677 INFO L93 Difference]: Finished difference Result 89 states and 213 transitions.
[2020-10-16 10:51:49,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states.
[2020-10-16 10:51:49,677 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 16
[2020-10-16 10:51:49,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:49,678 INFO L225 Difference]: With dead ends: 89
[2020-10-16 10:51:49,678 INFO L226 Difference]: Without dead ends: 83
[2020-10-16 10:51:49,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=228, Invalid=474, Unknown=0, NotChecked=0, Total=702
[2020-10-16 10:51:49,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states.
[2020-10-16 10:51:49,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 60.
[2020-10-16 10:51:49,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states.
[2020-10-16 10:51:49,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 153 transitions.
[2020-10-16 10:51:49,683 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 153 transitions. Word has length 16
[2020-10-16 10:51:49,683 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:49,683 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 153 transitions.
[2020-10-16 10:51:49,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states.
[2020-10-16 10:51:49,683 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 153 transitions.
[2020-10-16 10:51:49,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2020-10-16 10:51:49,683 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:49,684 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:49,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:49,884 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:49,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:49,885 INFO L82 PathProgramCache]: Analyzing trace with hash 756026442, now seen corresponding path program 44 times
[2020-10-16 10:51:49,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:49,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978134336]
[2020-10-16 10:51:49,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:49,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:49,953 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:49,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978134336]
[2020-10-16 10:51:49,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888782994]
[2020-10-16 10:51:49,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:50,015 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 10:51:50,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:51:50,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 13 conjunts are in the unsatisfiable core
[2020-10-16 10:51:50,017 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:50,070 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:50,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:50,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11
[2020-10-16 10:51:50,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487628693]
[2020-10-16 10:51:50,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 10:51:50,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:50,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 10:51:50,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156
[2020-10-16 10:51:50,072 INFO L87 Difference]: Start difference. First operand 60 states and 153 transitions. Second operand 13 states.
[2020-10-16 10:51:50,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:50,403 INFO L93 Difference]: Finished difference Result 68 states and 165 transitions.
[2020-10-16 10:51:50,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2020-10-16 10:51:50,404 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16
[2020-10-16 10:51:50,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:50,405 INFO L225 Difference]: With dead ends: 68
[2020-10-16 10:51:50,405 INFO L226 Difference]: Without dead ends: 60
[2020-10-16 10:51:50,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=224, Invalid=532, Unknown=0, NotChecked=0, Total=756
[2020-10-16 10:51:50,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states.
[2020-10-16 10:51:50,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 45.
[2020-10-16 10:51:50,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states.
[2020-10-16 10:51:50,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 108 transitions.
[2020-10-16 10:51:50,409 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 108 transitions. Word has length 16
[2020-10-16 10:51:50,409 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:50,409 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 108 transitions.
[2020-10-16 10:51:50,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 10:51:50,409 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 108 transitions.
[2020-10-16 10:51:50,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2020-10-16 10:51:50,410 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:50,410 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:50,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45
[2020-10-16 10:51:50,612 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:50,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:50,612 INFO L82 PathProgramCache]: Analyzing trace with hash 615233972, now seen corresponding path program 45 times
[2020-10-16 10:51:50,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:50,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847593202]
[2020-10-16 10:51:50,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:50,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:50,686 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:50,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847593202]
[2020-10-16 10:51:50,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244419062]
[2020-10-16 10:51:50,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:50,735 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2020-10-16 10:51:50,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:51:50,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjunts are in the unsatisfiable core
[2020-10-16 10:51:50,737 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:50,755 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-10-16 10:51:50,766 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:50,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:50,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11
[2020-10-16 10:51:50,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810048893]
[2020-10-16 10:51:50,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 10:51:50,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:50,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 10:51:50,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156
[2020-10-16 10:51:50,769 INFO L87 Difference]: Start difference. First operand 45 states and 108 transitions. Second operand 13 states.
[2020-10-16 10:51:51,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:51,162 INFO L93 Difference]: Finished difference Result 76 states and 183 transitions.
[2020-10-16 10:51:51,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states.
[2020-10-16 10:51:51,162 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16
[2020-10-16 10:51:51,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:51,163 INFO L225 Difference]: With dead ends: 76
[2020-10-16 10:51:51,163 INFO L226 Difference]: Without dead ends: 71
[2020-10-16 10:51:51,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=298, Invalid=572, Unknown=0, NotChecked=0, Total=870
[2020-10-16 10:51:51,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states.
[2020-10-16 10:51:51,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 58.
[2020-10-16 10:51:51,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states.
[2020-10-16 10:51:51,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 145 transitions.
[2020-10-16 10:51:51,166 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 145 transitions. Word has length 16
[2020-10-16 10:51:51,166 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:51,166 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 145 transitions.
[2020-10-16 10:51:51,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 10:51:51,166 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 145 transitions.
[2020-10-16 10:51:51,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2020-10-16 10:51:51,167 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:51,167 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:51,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:51,375 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:51,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:51,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1961999529, now seen corresponding path program 46 times
[2020-10-16 10:51:51,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:51,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506226261]
[2020-10-16 10:51:51,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:51,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:51,466 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:51,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506226261]
[2020-10-16 10:51:51,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977467317]
[2020-10-16 10:51:51,467 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:51,511 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 10:51:51,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:51:51,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 13 conjunts are in the unsatisfiable core
[2020-10-16 10:51:51,513 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:51,548 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-10-16 10:51:51,560 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:51,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:51,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12
[2020-10-16 10:51:51,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266354599]
[2020-10-16 10:51:51,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states
[2020-10-16 10:51:51,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:51,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2020-10-16 10:51:51,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182
[2020-10-16 10:51:51,562 INFO L87 Difference]: Start difference. First operand 58 states and 145 transitions. Second operand 14 states.
[2020-10-16 10:51:51,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:51,971 INFO L93 Difference]: Finished difference Result 66 states and 165 transitions.
[2020-10-16 10:51:51,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states.
[2020-10-16 10:51:51,971 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17
[2020-10-16 10:51:51,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:51,972 INFO L225 Difference]: With dead ends: 66
[2020-10-16 10:51:51,972 INFO L226 Difference]: Without dead ends: 61
[2020-10-16 10:51:51,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=311, Invalid=619, Unknown=0, NotChecked=0, Total=930
[2020-10-16 10:51:51,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states.
[2020-10-16 10:51:51,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 46.
[2020-10-16 10:51:51,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states.
[2020-10-16 10:51:51,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 112 transitions.
[2020-10-16 10:51:51,975 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 112 transitions. Word has length 17
[2020-10-16 10:51:51,975 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:51,975 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 112 transitions.
[2020-10-16 10:51:51,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states.
[2020-10-16 10:51:51,976 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 112 transitions.
[2020-10-16 10:51:51,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2020-10-16 10:51:51,976 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:51,976 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:52,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47
[2020-10-16 10:51:52,179 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:52,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:52,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1923197356, now seen corresponding path program 47 times
[2020-10-16 10:51:52,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:52,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863680194]
[2020-10-16 10:51:52,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:52,289 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:52,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863680194]
[2020-10-16 10:51:52,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476175921]
[2020-10-16 10:51:52,290 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:52,334 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s)
[2020-10-16 10:51:52,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:51:52,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 13 conjunts are in the unsatisfiable core
[2020-10-16 10:51:52,336 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:52,346 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:52,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:52,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11
[2020-10-16 10:51:52,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45323400]
[2020-10-16 10:51:52,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 10:51:52,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:52,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 10:51:52,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156
[2020-10-16 10:51:52,348 INFO L87 Difference]: Start difference. First operand 46 states and 112 transitions. Second operand 13 states.
[2020-10-16 10:51:52,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:52,543 INFO L93 Difference]: Finished difference Result 72 states and 167 transitions.
[2020-10-16 10:51:52,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2020-10-16 10:51:52,543 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 17
[2020-10-16 10:51:52,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:52,544 INFO L225 Difference]: With dead ends: 72
[2020-10-16 10:51:52,544 INFO L226 Difference]: Without dead ends: 66
[2020-10-16 10:51:52,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462
[2020-10-16 10:51:52,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states.
[2020-10-16 10:51:52,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54.
[2020-10-16 10:51:52,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states.
[2020-10-16 10:51:52,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 131 transitions.
[2020-10-16 10:51:52,549 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 131 transitions. Word has length 17
[2020-10-16 10:51:52,549 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:52,549 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 131 transitions.
[2020-10-16 10:51:52,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 10:51:52,549 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 131 transitions.
[2020-10-16 10:51:52,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2020-10-16 10:51:52,550 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:52,550 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:52,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48
[2020-10-16 10:51:52,761 INFO L429 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:52,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:52,761 INFO L82 PathProgramCache]: Analyzing trace with hash -666307656, now seen corresponding path program 48 times
[2020-10-16 10:51:52,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:52,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401751066]
[2020-10-16 10:51:52,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:52,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:52,878 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:52,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401751066]
[2020-10-16 10:51:52,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339035976]
[2020-10-16 10:51:52,879 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:52,931 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s)
[2020-10-16 10:51:52,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:51:52,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 13 conjunts are in the unsatisfiable core
[2020-10-16 10:51:52,933 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:52,947 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:51:52,958 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:52,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:52,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12
[2020-10-16 10:51:52,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178033860]
[2020-10-16 10:51:52,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states
[2020-10-16 10:51:52,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:52,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2020-10-16 10:51:52,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2020-10-16 10:51:52,960 INFO L87 Difference]: Start difference. First operand 54 states and 131 transitions. Second operand 14 states.
[2020-10-16 10:51:53,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:53,167 INFO L93 Difference]: Finished difference Result 82 states and 187 transitions.
[2020-10-16 10:51:53,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2020-10-16 10:51:53,168 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17
[2020-10-16 10:51:53,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:53,169 INFO L225 Difference]: With dead ends: 82
[2020-10-16 10:51:53,169 INFO L226 Difference]: Without dead ends: 76
[2020-10-16 10:51:53,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=390, Unknown=0, NotChecked=0, Total=552
[2020-10-16 10:51:53,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states.
[2020-10-16 10:51:53,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 52.
[2020-10-16 10:51:53,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states.
[2020-10-16 10:51:53,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 127 transitions.
[2020-10-16 10:51:53,173 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 127 transitions. Word has length 17
[2020-10-16 10:51:53,173 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:53,173 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 127 transitions.
[2020-10-16 10:51:53,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states.
[2020-10-16 10:51:53,173 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 127 transitions.
[2020-10-16 10:51:53,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2020-10-16 10:51:53,174 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:53,174 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:53,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49
[2020-10-16 10:51:53,382 INFO L429 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:53,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:53,382 INFO L82 PathProgramCache]: Analyzing trace with hash 949884854, now seen corresponding path program 49 times
[2020-10-16 10:51:53,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:53,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398146703]
[2020-10-16 10:51:53,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:53,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:53,486 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:53,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398146703]
[2020-10-16 10:51:53,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376276035]
[2020-10-16 10:51:53,486 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:53,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:53,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 13 conjunts are in the unsatisfiable core
[2020-10-16 10:51:53,540 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:53,559 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:53,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:53,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11
[2020-10-16 10:51:53,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865092572]
[2020-10-16 10:51:53,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 10:51:53,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:53,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 10:51:53,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156
[2020-10-16 10:51:53,561 INFO L87 Difference]: Start difference. First operand 52 states and 127 transitions. Second operand 13 states.
[2020-10-16 10:51:53,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:53,811 INFO L93 Difference]: Finished difference Result 83 states and 191 transitions.
[2020-10-16 10:51:53,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2020-10-16 10:51:53,812 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 17
[2020-10-16 10:51:53,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:53,813 INFO L225 Difference]: With dead ends: 83
[2020-10-16 10:51:53,813 INFO L226 Difference]: Without dead ends: 77
[2020-10-16 10:51:53,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=430, Unknown=0, NotChecked=0, Total=600
[2020-10-16 10:51:53,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states.
[2020-10-16 10:51:53,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 55.
[2020-10-16 10:51:53,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states.
[2020-10-16 10:51:53,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 135 transitions.
[2020-10-16 10:51:53,817 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 135 transitions. Word has length 17
[2020-10-16 10:51:53,817 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:53,817 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 135 transitions.
[2020-10-16 10:51:53,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 10:51:53,817 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 135 transitions.
[2020-10-16 10:51:53,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2020-10-16 10:51:53,818 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:53,819 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:54,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50
[2020-10-16 10:51:54,024 INFO L429 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:54,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:54,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1469627930, now seen corresponding path program 50 times
[2020-10-16 10:51:54,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:54,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403730366]
[2020-10-16 10:51:54,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:54,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:54,138 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:54,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403730366]
[2020-10-16 10:51:54,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403027168]
[2020-10-16 10:51:54,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:54,213 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 10:51:54,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:51:54,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 13 conjunts are in the unsatisfiable core
[2020-10-16 10:51:54,215 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:54,241 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:51:54,258 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:54,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:54,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12
[2020-10-16 10:51:54,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332305046]
[2020-10-16 10:51:54,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states
[2020-10-16 10:51:54,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:54,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2020-10-16 10:51:54,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182
[2020-10-16 10:51:54,262 INFO L87 Difference]: Start difference. First operand 55 states and 135 transitions. Second operand 14 states.
[2020-10-16 10:51:54,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:54,634 INFO L93 Difference]: Finished difference Result 89 states and 203 transitions.
[2020-10-16 10:51:54,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2020-10-16 10:51:54,637 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17
[2020-10-16 10:51:54,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:54,637 INFO L225 Difference]: With dead ends: 89
[2020-10-16 10:51:54,638 INFO L226 Difference]: Without dead ends: 83
[2020-10-16 10:51:54,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=196, Invalid=506, Unknown=0, NotChecked=0, Total=702
[2020-10-16 10:51:54,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states.
[2020-10-16 10:51:54,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 54.
[2020-10-16 10:51:54,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states.
[2020-10-16 10:51:54,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 133 transitions.
[2020-10-16 10:51:54,645 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 133 transitions. Word has length 17
[2020-10-16 10:51:54,645 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:54,647 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 133 transitions.
[2020-10-16 10:51:54,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states.
[2020-10-16 10:51:54,647 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 133 transitions.
[2020-10-16 10:51:54,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2020-10-16 10:51:54,648 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:54,648 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:54,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:54,858 INFO L429 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:54,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:54,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1170028136, now seen corresponding path program 51 times
[2020-10-16 10:51:54,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:54,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287722923]
[2020-10-16 10:51:54,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:54,972 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:54,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287722923]
[2020-10-16 10:51:54,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324731541]
[2020-10-16 10:51:54,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:55,034 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s)
[2020-10-16 10:51:55,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:51:55,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 13 conjunts are in the unsatisfiable core
[2020-10-16 10:51:55,037 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:55,060 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:55,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:55,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11
[2020-10-16 10:51:55,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857782595]
[2020-10-16 10:51:55,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 10:51:55,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:55,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 10:51:55,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156
[2020-10-16 10:51:55,062 INFO L87 Difference]: Start difference. First operand 54 states and 133 transitions. Second operand 13 states.
[2020-10-16 10:51:55,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:55,435 INFO L93 Difference]: Finished difference Result 89 states and 205 transitions.
[2020-10-16 10:51:55,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states.
[2020-10-16 10:51:55,436 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 17
[2020-10-16 10:51:55,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:55,437 INFO L225 Difference]: With dead ends: 89
[2020-10-16 10:51:55,437 INFO L226 Difference]: Without dead ends: 83
[2020-10-16 10:51:55,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=218, Invalid=538, Unknown=0, NotChecked=0, Total=756
[2020-10-16 10:51:55,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states.
[2020-10-16 10:51:55,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 57.
[2020-10-16 10:51:55,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states.
[2020-10-16 10:51:55,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 141 transitions.
[2020-10-16 10:51:55,442 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 141 transitions. Word has length 17
[2020-10-16 10:51:55,442 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:55,442 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 141 transitions.
[2020-10-16 10:51:55,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 10:51:55,443 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 141 transitions.
[2020-10-16 10:51:55,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2020-10-16 10:51:55,443 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:55,444 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:55,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:55,654 INFO L429 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:55,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:55,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1404811516, now seen corresponding path program 52 times
[2020-10-16 10:51:55,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:55,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446558577]
[2020-10-16 10:51:55,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:55,792 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:55,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446558577]
[2020-10-16 10:51:55,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7556331]
[2020-10-16 10:51:55,793 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:55,856 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 10:51:55,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:51:55,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 13 conjunts are in the unsatisfiable core
[2020-10-16 10:51:55,858 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:55,879 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:51:55,904 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:55,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:55,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12
[2020-10-16 10:51:55,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789958478]
[2020-10-16 10:51:55,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states
[2020-10-16 10:51:55,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:55,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2020-10-16 10:51:55,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182
[2020-10-16 10:51:55,906 INFO L87 Difference]: Start difference. First operand 57 states and 141 transitions. Second operand 14 states.
[2020-10-16 10:51:56,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:56,268 INFO L93 Difference]: Finished difference Result 86 states and 199 transitions.
[2020-10-16 10:51:56,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2020-10-16 10:51:56,268 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17
[2020-10-16 10:51:56,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:56,269 INFO L225 Difference]: With dead ends: 86
[2020-10-16 10:51:56,269 INFO L226 Difference]: Without dead ends: 80
[2020-10-16 10:51:56,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=227, Invalid=585, Unknown=0, NotChecked=0, Total=812
[2020-10-16 10:51:56,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states.
[2020-10-16 10:51:56,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 56.
[2020-10-16 10:51:56,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states.
[2020-10-16 10:51:56,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 139 transitions.
[2020-10-16 10:51:56,272 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 139 transitions. Word has length 17
[2020-10-16 10:51:56,272 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:56,272 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 139 transitions.
[2020-10-16 10:51:56,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states.
[2020-10-16 10:51:56,273 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 139 transitions.
[2020-10-16 10:51:56,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2020-10-16 10:51:56,273 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:56,273 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:56,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53
[2020-10-16 10:51:56,474 INFO L429 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:56,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:56,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1875807226, now seen corresponding path program 53 times
[2020-10-16 10:51:56,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:56,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366471352]
[2020-10-16 10:51:56,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:56,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:56,562 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:56,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366471352]
[2020-10-16 10:51:56,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62565727]
[2020-10-16 10:51:56,563 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:56,611 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s)
[2020-10-16 10:51:56,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:51:56,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 13 conjunts are in the unsatisfiable core
[2020-10-16 10:51:56,613 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:56,626 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:56,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:56,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11
[2020-10-16 10:51:56,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330191706]
[2020-10-16 10:51:56,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 10:51:56,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:56,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 10:51:56,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156
[2020-10-16 10:51:56,629 INFO L87 Difference]: Start difference. First operand 56 states and 139 transitions. Second operand 13 states.
[2020-10-16 10:51:56,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:56,962 INFO L93 Difference]: Finished difference Result 87 states and 203 transitions.
[2020-10-16 10:51:56,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2020-10-16 10:51:56,963 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 17
[2020-10-16 10:51:56,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:56,964 INFO L225 Difference]: With dead ends: 87
[2020-10-16 10:51:56,964 INFO L226 Difference]: Without dead ends: 81
[2020-10-16 10:51:56,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=606, Unknown=0, NotChecked=0, Total=870
[2020-10-16 10:51:56,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states.
[2020-10-16 10:51:56,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 59.
[2020-10-16 10:51:56,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states.
[2020-10-16 10:51:56,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 147 transitions.
[2020-10-16 10:51:56,968 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 147 transitions. Word has length 17
[2020-10-16 10:51:56,968 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:56,968 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 147 transitions.
[2020-10-16 10:51:56,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 10:51:56,968 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 147 transitions.
[2020-10-16 10:51:56,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2020-10-16 10:51:56,969 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:56,969 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:57,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:57,180 INFO L429 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:57,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:57,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1891894366, now seen corresponding path program 54 times
[2020-10-16 10:51:57,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:57,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028589011]
[2020-10-16 10:51:57,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:57,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:57,266 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:57,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028589011]
[2020-10-16 10:51:57,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501891392]
[2020-10-16 10:51:57,267 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:57,311 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s)
[2020-10-16 10:51:57,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:51:57,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 13 conjunts are in the unsatisfiable core
[2020-10-16 10:51:57,313 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:57,332 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:51:57,350 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:57,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:57,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12
[2020-10-16 10:51:57,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373180756]
[2020-10-16 10:51:57,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states
[2020-10-16 10:51:57,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:57,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2020-10-16 10:51:57,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182
[2020-10-16 10:51:57,352 INFO L87 Difference]: Start difference. First operand 59 states and 147 transitions. Second operand 14 states.
[2020-10-16 10:51:57,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:57,788 INFO L93 Difference]: Finished difference Result 84 states and 197 transitions.
[2020-10-16 10:51:57,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2020-10-16 10:51:57,789 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17
[2020-10-16 10:51:57,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:57,790 INFO L225 Difference]: With dead ends: 84
[2020-10-16 10:51:57,790 INFO L226 Difference]: Without dead ends: 78
[2020-10-16 10:51:57,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=274, Invalid=656, Unknown=0, NotChecked=0, Total=930
[2020-10-16 10:51:57,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states.
[2020-10-16 10:51:57,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 58.
[2020-10-16 10:51:57,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states.
[2020-10-16 10:51:57,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 145 transitions.
[2020-10-16 10:51:57,793 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 145 transitions. Word has length 17
[2020-10-16 10:51:57,793 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:57,793 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 145 transitions.
[2020-10-16 10:51:57,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states.
[2020-10-16 10:51:57,793 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 145 transitions.
[2020-10-16 10:51:57,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2020-10-16 10:51:57,794 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:57,794 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:57,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55
[2020-10-16 10:51:57,995 INFO L429 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:57,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:57,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1892384476, now seen corresponding path program 55 times
[2020-10-16 10:51:57,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:57,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673295616]
[2020-10-16 10:51:57,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:58,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:58,084 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:58,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673295616]
[2020-10-16 10:51:58,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960590595]
[2020-10-16 10:51:58,084 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:58,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:58,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 13 conjunts are in the unsatisfiable core
[2020-10-16 10:51:58,125 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:58,142 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:58,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:58,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11
[2020-10-16 10:51:58,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306717613]
[2020-10-16 10:51:58,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 10:51:58,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:58,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 10:51:58,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156
[2020-10-16 10:51:58,144 INFO L87 Difference]: Start difference. First operand 58 states and 145 transitions. Second operand 13 states.
[2020-10-16 10:51:58,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:58,518 INFO L93 Difference]: Finished difference Result 104 states and 247 transitions.
[2020-10-16 10:51:58,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states.
[2020-10-16 10:51:58,519 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 17
[2020-10-16 10:51:58,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:58,520 INFO L225 Difference]: With dead ends: 104
[2020-10-16 10:51:58,520 INFO L226 Difference]: Without dead ends: 98
[2020-10-16 10:51:58,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=326, Invalid=666, Unknown=0, NotChecked=0, Total=992
[2020-10-16 10:51:58,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states.
[2020-10-16 10:51:58,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 64.
[2020-10-16 10:51:58,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states.
[2020-10-16 10:51:58,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 165 transitions.
[2020-10-16 10:51:58,524 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 165 transitions. Word has length 17
[2020-10-16 10:51:58,524 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:58,525 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 165 transitions.
[2020-10-16 10:51:58,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 10:51:58,525 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 165 transitions.
[2020-10-16 10:51:58,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2020-10-16 10:51:58,525 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:58,525 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:58,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56
[2020-10-16 10:51:58,736 INFO L429 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:58,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:58,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1892401216, now seen corresponding path program 56 times
[2020-10-16 10:51:58,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:58,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137581444]
[2020-10-16 10:51:58,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:58,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:58,858 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:58,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137581444]
[2020-10-16 10:51:58,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831767483]
[2020-10-16 10:51:58,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:58,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 10:51:58,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:51:58,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 13 conjunts are in the unsatisfiable core
[2020-10-16 10:51:58,936 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:58,961 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:51:58,977 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:58,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:58,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12
[2020-10-16 10:51:58,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777409854]
[2020-10-16 10:51:58,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states
[2020-10-16 10:51:58,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:58,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2020-10-16 10:51:58,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2020-10-16 10:51:58,980 INFO L87 Difference]: Start difference. First operand 64 states and 165 transitions. Second operand 14 states.
[2020-10-16 10:51:59,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:51:59,547 INFO L93 Difference]: Finished difference Result 85 states and 203 transitions.
[2020-10-16 10:51:59,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states.
[2020-10-16 10:51:59,548 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17
[2020-10-16 10:51:59,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:51:59,549 INFO L225 Difference]: With dead ends: 85
[2020-10-16 10:51:59,549 INFO L226 Difference]: Without dead ends: 77
[2020-10-16 10:51:59,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=337, Invalid=719, Unknown=0, NotChecked=0, Total=1056
[2020-10-16 10:51:59,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states.
[2020-10-16 10:51:59,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 61.
[2020-10-16 10:51:59,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states.
[2020-10-16 10:51:59,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 153 transitions.
[2020-10-16 10:51:59,552 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 153 transitions. Word has length 17
[2020-10-16 10:51:59,552 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:51:59,552 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 153 transitions.
[2020-10-16 10:51:59,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states.
[2020-10-16 10:51:59,552 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 153 transitions.
[2020-10-16 10:51:59,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2020-10-16 10:51:59,553 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:51:59,553 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:51:59,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57
[2020-10-16 10:51:59,763 INFO L429 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:51:59,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:51:59,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1171829247, now seen corresponding path program 57 times
[2020-10-16 10:51:59,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:51:59,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838616459]
[2020-10-16 10:51:59,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:51:59,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:51:59,905 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:59,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838616459]
[2020-10-16 10:51:59,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522393134]
[2020-10-16 10:51:59,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:51:59,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s)
[2020-10-16 10:51:59,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:51:59,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjunts are in the unsatisfiable core
[2020-10-16 10:51:59,973 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:51:59,985 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:51:59,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:51:59,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12
[2020-10-16 10:51:59,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732044996]
[2020-10-16 10:51:59,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states
[2020-10-16 10:51:59,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:51:59,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2020-10-16 10:51:59,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182
[2020-10-16 10:51:59,986 INFO L87 Difference]: Start difference. First operand 61 states and 153 transitions. Second operand 14 states.
[2020-10-16 10:52:00,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:00,229 INFO L93 Difference]: Finished difference Result 94 states and 219 transitions.
[2020-10-16 10:52:00,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2020-10-16 10:52:00,229 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 18
[2020-10-16 10:52:00,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:00,231 INFO L225 Difference]: With dead ends: 94
[2020-10-16 10:52:00,231 INFO L226 Difference]: Without dead ends: 88
[2020-10-16 10:52:00,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=183, Invalid=417, Unknown=0, NotChecked=0, Total=600
[2020-10-16 10:52:00,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states.
[2020-10-16 10:52:00,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 63.
[2020-10-16 10:52:00,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states.
[2020-10-16 10:52:00,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 157 transitions.
[2020-10-16 10:52:00,233 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 157 transitions. Word has length 18
[2020-10-16 10:52:00,233 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:00,234 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 157 transitions.
[2020-10-16 10:52:00,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states.
[2020-10-16 10:52:00,234 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 157 transitions.
[2020-10-16 10:52:00,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2020-10-16 10:52:00,234 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:00,234 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:00,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58
[2020-10-16 10:52:00,441 INFO L429 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:00,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:00,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1866248349, now seen corresponding path program 58 times
[2020-10-16 10:52:00,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:00,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781689218]
[2020-10-16 10:52:00,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:00,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:00,572 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:00,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781689218]
[2020-10-16 10:52:00,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291116887]
[2020-10-16 10:52:00,573 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:00,617 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 10:52:00,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:00,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjunts are in the unsatisfiable core
[2020-10-16 10:52:00,619 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:00,635 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:52:00,649 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:00,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:00,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13
[2020-10-16 10:52:00,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317496874]
[2020-10-16 10:52:00,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 10:52:00,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:00,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 10:52:00,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210
[2020-10-16 10:52:00,650 INFO L87 Difference]: Start difference. First operand 63 states and 157 transitions. Second operand 15 states.
[2020-10-16 10:52:00,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:00,962 INFO L93 Difference]: Finished difference Result 91 states and 213 transitions.
[2020-10-16 10:52:00,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2020-10-16 10:52:00,962 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18
[2020-10-16 10:52:00,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:00,963 INFO L225 Difference]: With dead ends: 91
[2020-10-16 10:52:00,964 INFO L226 Difference]: Without dead ends: 85
[2020-10-16 10:52:00,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=218, Invalid=538, Unknown=0, NotChecked=0, Total=756
[2020-10-16 10:52:00,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states.
[2020-10-16 10:52:00,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 62.
[2020-10-16 10:52:00,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states.
[2020-10-16 10:52:00,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 155 transitions.
[2020-10-16 10:52:00,967 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 155 transitions. Word has length 18
[2020-10-16 10:52:00,967 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:00,967 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 155 transitions.
[2020-10-16 10:52:00,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 10:52:00,967 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 155 transitions.
[2020-10-16 10:52:00,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2020-10-16 10:52:00,968 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:00,968 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:01,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59
[2020-10-16 10:52:01,177 INFO L429 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:01,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:01,177 INFO L82 PathProgramCache]: Analyzing trace with hash -250055839, now seen corresponding path program 59 times
[2020-10-16 10:52:01,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:01,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399553979]
[2020-10-16 10:52:01,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:01,282 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:01,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399553979]
[2020-10-16 10:52:01,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356774797]
[2020-10-16 10:52:01,283 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:01,333 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s)
[2020-10-16 10:52:01,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:01,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjunts are in the unsatisfiable core
[2020-10-16 10:52:01,336 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:01,357 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:01,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:01,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12
[2020-10-16 10:52:01,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151618391]
[2020-10-16 10:52:01,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states
[2020-10-16 10:52:01,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:01,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2020-10-16 10:52:01,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182
[2020-10-16 10:52:01,358 INFO L87 Difference]: Start difference. First operand 62 states and 155 transitions. Second operand 14 states.
[2020-10-16 10:52:01,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:01,633 INFO L93 Difference]: Finished difference Result 88 states and 207 transitions.
[2020-10-16 10:52:01,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2020-10-16 10:52:01,633 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 18
[2020-10-16 10:52:01,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:01,634 INFO L225 Difference]: With dead ends: 88
[2020-10-16 10:52:01,635 INFO L226 Difference]: Without dead ends: 82
[2020-10-16 10:52:01,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=504, Unknown=0, NotChecked=0, Total=702
[2020-10-16 10:52:01,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states.
[2020-10-16 10:52:01,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 63.
[2020-10-16 10:52:01,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states.
[2020-10-16 10:52:01,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 157 transitions.
[2020-10-16 10:52:01,637 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 157 transitions. Word has length 18
[2020-10-16 10:52:01,638 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:01,638 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 157 transitions.
[2020-10-16 10:52:01,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states.
[2020-10-16 10:52:01,638 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 157 transitions.
[2020-10-16 10:52:01,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2020-10-16 10:52:01,638 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:01,638 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:01,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:01,848 INFO L429 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:01,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:01,848 INFO L82 PathProgramCache]: Analyzing trace with hash 269687237, now seen corresponding path program 60 times
[2020-10-16 10:52:01,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:01,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962478809]
[2020-10-16 10:52:01,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:01,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:01,952 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:01,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962478809]
[2020-10-16 10:52:01,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752979593]
[2020-10-16 10:52:01,953 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:02,007 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s)
[2020-10-16 10:52:02,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:02,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjunts are in the unsatisfiable core
[2020-10-16 10:52:02,009 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:02,037 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:52:02,053 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:02,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:02,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13
[2020-10-16 10:52:02,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429820682]
[2020-10-16 10:52:02,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 10:52:02,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:02,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 10:52:02,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210
[2020-10-16 10:52:02,057 INFO L87 Difference]: Start difference. First operand 63 states and 157 transitions. Second operand 15 states.
[2020-10-16 10:52:02,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:02,430 INFO L93 Difference]: Finished difference Result 87 states and 205 transitions.
[2020-10-16 10:52:02,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2020-10-16 10:52:02,430 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18
[2020-10-16 10:52:02,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:02,431 INFO L225 Difference]: With dead ends: 87
[2020-10-16 10:52:02,431 INFO L226 Difference]: Without dead ends: 81
[2020-10-16 10:52:02,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=240, Invalid=630, Unknown=0, NotChecked=0, Total=870
[2020-10-16 10:52:02,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states.
[2020-10-16 10:52:02,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 62.
[2020-10-16 10:52:02,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states.
[2020-10-16 10:52:02,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 155 transitions.
[2020-10-16 10:52:02,435 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 155 transitions. Word has length 18
[2020-10-16 10:52:02,436 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:02,436 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 155 transitions.
[2020-10-16 10:52:02,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 10:52:02,436 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 155 transitions.
[2020-10-16 10:52:02,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2020-10-16 10:52:02,436 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:02,436 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:02,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:02,647 INFO L429 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:02,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:02,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1924998467, now seen corresponding path program 61 times
[2020-10-16 10:52:02,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:02,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129525708]
[2020-10-16 10:52:02,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:02,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:02,743 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:02,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129525708]
[2020-10-16 10:52:02,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539246497]
[2020-10-16 10:52:02,743 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:02,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:02,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjunts are in the unsatisfiable core
[2020-10-16 10:52:02,798 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:02,819 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:02,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:02,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12
[2020-10-16 10:52:02,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614143993]
[2020-10-16 10:52:02,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states
[2020-10-16 10:52:02,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:02,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2020-10-16 10:52:02,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182
[2020-10-16 10:52:02,821 INFO L87 Difference]: Start difference. First operand 62 states and 155 transitions. Second operand 14 states.
[2020-10-16 10:52:03,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:03,157 INFO L93 Difference]: Finished difference Result 84 states and 199 transitions.
[2020-10-16 10:52:03,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states.
[2020-10-16 10:52:03,158 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 18
[2020-10-16 10:52:03,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:03,159 INFO L225 Difference]: With dead ends: 84
[2020-10-16 10:52:03,159 INFO L226 Difference]: Without dead ends: 78
[2020-10-16 10:52:03,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=229, Invalid=583, Unknown=0, NotChecked=0, Total=812
[2020-10-16 10:52:03,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states.
[2020-10-16 10:52:03,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 63.
[2020-10-16 10:52:03,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states.
[2020-10-16 10:52:03,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 157 transitions.
[2020-10-16 10:52:03,162 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 157 transitions. Word has length 18
[2020-10-16 10:52:03,163 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:03,163 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 157 transitions.
[2020-10-16 10:52:03,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states.
[2020-10-16 10:52:03,163 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 157 transitions.
[2020-10-16 10:52:03,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2020-10-16 10:52:03,163 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:03,163 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:03,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62
[2020-10-16 10:52:03,373 INFO L429 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:03,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:03,373 INFO L82 PathProgramCache]: Analyzing trace with hash 204870823, now seen corresponding path program 62 times
[2020-10-16 10:52:03,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:03,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460680096]
[2020-10-16 10:52:03,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:03,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:03,476 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:03,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460680096]
[2020-10-16 10:52:03,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150348905]
[2020-10-16 10:52:03,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:03,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 10:52:03,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:03,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjunts are in the unsatisfiable core
[2020-10-16 10:52:03,530 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:03,547 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:52:03,558 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:03,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:03,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13
[2020-10-16 10:52:03,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094955279]
[2020-10-16 10:52:03,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 10:52:03,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:03,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 10:52:03,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210
[2020-10-16 10:52:03,561 INFO L87 Difference]: Start difference. First operand 63 states and 157 transitions. Second operand 15 states.
[2020-10-16 10:52:03,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:03,998 INFO L93 Difference]: Finished difference Result 83 states and 197 transitions.
[2020-10-16 10:52:03,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2020-10-16 10:52:03,999 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18
[2020-10-16 10:52:03,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:04,000 INFO L225 Difference]: With dead ends: 83
[2020-10-16 10:52:04,000 INFO L226 Difference]: Without dead ends: 77
[2020-10-16 10:52:04,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=278, Invalid=714, Unknown=0, NotChecked=0, Total=992
[2020-10-16 10:52:04,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states.
[2020-10-16 10:52:04,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 62.
[2020-10-16 10:52:04,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states.
[2020-10-16 10:52:04,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 155 transitions.
[2020-10-16 10:52:04,004 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 155 transitions. Word has length 18
[2020-10-16 10:52:04,004 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:04,004 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 155 transitions.
[2020-10-16 10:52:04,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 10:52:04,005 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 155 transitions.
[2020-10-16 10:52:04,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2020-10-16 10:52:04,005 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:04,005 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:04,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:04,215 INFO L429 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:04,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:04,215 INFO L82 PathProgramCache]: Analyzing trace with hash 675866533, now seen corresponding path program 63 times
[2020-10-16 10:52:04,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:04,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248219146]
[2020-10-16 10:52:04,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:04,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:04,318 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:04,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248219146]
[2020-10-16 10:52:04,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684373914]
[2020-10-16 10:52:04,319 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:04,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s)
[2020-10-16 10:52:04,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:04,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjunts are in the unsatisfiable core
[2020-10-16 10:52:04,368 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:04,387 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:04,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:04,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12
[2020-10-16 10:52:04,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553679311]
[2020-10-16 10:52:04,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states
[2020-10-16 10:52:04,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:04,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2020-10-16 10:52:04,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182
[2020-10-16 10:52:04,389 INFO L87 Difference]: Start difference. First operand 62 states and 155 transitions. Second operand 14 states.
[2020-10-16 10:52:04,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:04,770 INFO L93 Difference]: Finished difference Result 80 states and 191 transitions.
[2020-10-16 10:52:04,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2020-10-16 10:52:04,770 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 18
[2020-10-16 10:52:04,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:04,771 INFO L225 Difference]: With dead ends: 80
[2020-10-16 10:52:04,771 INFO L226 Difference]: Without dead ends: 74
[2020-10-16 10:52:04,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=276, Invalid=654, Unknown=0, NotChecked=0, Total=930
[2020-10-16 10:52:04,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states.
[2020-10-16 10:52:04,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 63.
[2020-10-16 10:52:04,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states.
[2020-10-16 10:52:04,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 157 transitions.
[2020-10-16 10:52:04,774 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 157 transitions. Word has length 18
[2020-10-16 10:52:04,774 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:04,774 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 157 transitions.
[2020-10-16 10:52:04,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states.
[2020-10-16 10:52:04,774 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 157 transitions.
[2020-10-16 10:52:04,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2020-10-16 10:52:04,774 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:04,774 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:04,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64
[2020-10-16 10:52:04,975 INFO L429 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:04,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:04,976 INFO L82 PathProgramCache]: Analyzing trace with hash 691953673, now seen corresponding path program 64 times
[2020-10-16 10:52:04,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:04,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978366246]
[2020-10-16 10:52:04,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:04,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:05,082 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:05,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978366246]
[2020-10-16 10:52:05,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732449663]
[2020-10-16 10:52:05,083 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:05,135 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 10:52:05,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:05,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjunts are in the unsatisfiable core
[2020-10-16 10:52:05,137 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:05,161 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:52:05,171 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:05,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:05,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13
[2020-10-16 10:52:05,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320903818]
[2020-10-16 10:52:05,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 10:52:05,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:05,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 10:52:05,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210
[2020-10-16 10:52:05,173 INFO L87 Difference]: Start difference. First operand 63 states and 157 transitions. Second operand 15 states.
[2020-10-16 10:52:05,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:05,708 INFO L93 Difference]: Finished difference Result 79 states and 189 transitions.
[2020-10-16 10:52:05,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states.
[2020-10-16 10:52:05,709 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18
[2020-10-16 10:52:05,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:05,709 INFO L225 Difference]: With dead ends: 79
[2020-10-16 10:52:05,710 INFO L226 Difference]: Without dead ends: 73
[2020-10-16 10:52:05,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=332, Invalid=790, Unknown=0, NotChecked=0, Total=1122
[2020-10-16 10:52:05,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states.
[2020-10-16 10:52:05,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 62.
[2020-10-16 10:52:05,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states.
[2020-10-16 10:52:05,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 155 transitions.
[2020-10-16 10:52:05,713 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 155 transitions. Word has length 18
[2020-10-16 10:52:05,713 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:05,713 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 155 transitions.
[2020-10-16 10:52:05,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 10:52:05,713 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 155 transitions.
[2020-10-16 10:52:05,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2020-10-16 10:52:05,714 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:05,714 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:05,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:05,922 INFO L429 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:05,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:05,922 INFO L82 PathProgramCache]: Analyzing trace with hash 692443783, now seen corresponding path program 65 times
[2020-10-16 10:52:05,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:05,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126914117]
[2020-10-16 10:52:05,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:05,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:06,018 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:06,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126914117]
[2020-10-16 10:52:06,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460843619]
[2020-10-16 10:52:06,019 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:06,063 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s)
[2020-10-16 10:52:06,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:06,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjunts are in the unsatisfiable core
[2020-10-16 10:52:06,065 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:06,091 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:06,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:06,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12
[2020-10-16 10:52:06,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609453286]
[2020-10-16 10:52:06,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states
[2020-10-16 10:52:06,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:06,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2020-10-16 10:52:06,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182
[2020-10-16 10:52:06,093 INFO L87 Difference]: Start difference. First operand 62 states and 155 transitions. Second operand 14 states.
[2020-10-16 10:52:06,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:06,505 INFO L93 Difference]: Finished difference Result 95 states and 229 transitions.
[2020-10-16 10:52:06,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states.
[2020-10-16 10:52:06,505 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 18
[2020-10-16 10:52:06,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:06,506 INFO L225 Difference]: With dead ends: 95
[2020-10-16 10:52:06,507 INFO L226 Difference]: Without dead ends: 89
[2020-10-16 10:52:06,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=339, Invalid=717, Unknown=0, NotChecked=0, Total=1056
[2020-10-16 10:52:06,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states.
[2020-10-16 10:52:06,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 66.
[2020-10-16 10:52:06,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states.
[2020-10-16 10:52:06,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 169 transitions.
[2020-10-16 10:52:06,510 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 169 transitions. Word has length 18
[2020-10-16 10:52:06,510 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:06,510 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 169 transitions.
[2020-10-16 10:52:06,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states.
[2020-10-16 10:52:06,510 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 169 transitions.
[2020-10-16 10:52:06,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2020-10-16 10:52:06,511 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:06,511 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:06,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66
[2020-10-16 10:52:06,720 INFO L429 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:06,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:06,720 INFO L82 PathProgramCache]: Analyzing trace with hash 692460523, now seen corresponding path program 66 times
[2020-10-16 10:52:06,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:06,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710589551]
[2020-10-16 10:52:06,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:06,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:06,818 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:06,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710589551]
[2020-10-16 10:52:06,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16100759]
[2020-10-16 10:52:06,819 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:06,864 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s)
[2020-10-16 10:52:06,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:06,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 15 conjunts are in the unsatisfiable core
[2020-10-16 10:52:06,866 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:06,901 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:06,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:06,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13
[2020-10-16 10:52:06,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46422376]
[2020-10-16 10:52:06,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 10:52:06,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:06,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 10:52:06,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210
[2020-10-16 10:52:06,903 INFO L87 Difference]: Start difference. First operand 66 states and 169 transitions. Second operand 15 states.
[2020-10-16 10:52:07,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:07,393 INFO L93 Difference]: Finished difference Result 74 states and 181 transitions.
[2020-10-16 10:52:07,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states.
[2020-10-16 10:52:07,393 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18
[2020-10-16 10:52:07,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:07,394 INFO L225 Difference]: With dead ends: 74
[2020-10-16 10:52:07,394 INFO L226 Difference]: Without dead ends: 66
[2020-10-16 10:52:07,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=326, Invalid=796, Unknown=0, NotChecked=0, Total=1122
[2020-10-16 10:52:07,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states.
[2020-10-16 10:52:07,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 49.
[2020-10-16 10:52:07,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states.
[2020-10-16 10:52:07,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 118 transitions.
[2020-10-16 10:52:07,396 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 118 transitions. Word has length 18
[2020-10-16 10:52:07,396 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:07,396 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 118 transitions.
[2020-10-16 10:52:07,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 10:52:07,397 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 118 transitions.
[2020-10-16 10:52:07,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2020-10-16 10:52:07,397 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:07,397 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:07,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:07,598 INFO L429 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:07,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:07,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1465088141, now seen corresponding path program 67 times
[2020-10-16 10:52:07,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:07,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4057096]
[2020-10-16 10:52:07,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:07,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:07,696 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:07,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4057096]
[2020-10-16 10:52:07,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635218150]
[2020-10-16 10:52:07,697 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:07,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:07,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjunts are in the unsatisfiable core
[2020-10-16 10:52:07,743 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:07,766 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-10-16 10:52:07,779 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:07,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:07,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13
[2020-10-16 10:52:07,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711547348]
[2020-10-16 10:52:07,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 10:52:07,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:07,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 10:52:07,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210
[2020-10-16 10:52:07,781 INFO L87 Difference]: Start difference. First operand 49 states and 118 transitions. Second operand 15 states.
[2020-10-16 10:52:08,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:08,291 INFO L93 Difference]: Finished difference Result 84 states and 203 transitions.
[2020-10-16 10:52:08,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states.
[2020-10-16 10:52:08,292 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18
[2020-10-16 10:52:08,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:08,293 INFO L225 Difference]: With dead ends: 84
[2020-10-16 10:52:08,293 INFO L226 Difference]: Without dead ends: 79
[2020-10-16 10:52:08,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=425, Invalid=835, Unknown=0, NotChecked=0, Total=1260
[2020-10-16 10:52:08,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states.
[2020-10-16 10:52:08,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 64.
[2020-10-16 10:52:08,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states.
[2020-10-16 10:52:08,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 161 transitions.
[2020-10-16 10:52:08,296 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 161 transitions. Word has length 18
[2020-10-16 10:52:08,296 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:08,297 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 161 transitions.
[2020-10-16 10:52:08,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 10:52:08,297 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 161 transitions.
[2020-10-16 10:52:08,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2020-10-16 10:52:08,297 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:08,297 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:08,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68
[2020-10-16 10:52:08,508 INFO L429 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:08,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:08,509 INFO L82 PathProgramCache]: Analyzing trace with hash -8543960, now seen corresponding path program 68 times
[2020-10-16 10:52:08,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:08,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832600887]
[2020-10-16 10:52:08,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:08,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:08,618 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:08,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832600887]
[2020-10-16 10:52:08,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53805457]
[2020-10-16 10:52:08,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:08,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 10:52:08,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:08,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjunts are in the unsatisfiable core
[2020-10-16 10:52:08,662 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:08,682 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-10-16 10:52:08,702 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:08,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:08,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14
[2020-10-16 10:52:08,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832442640]
[2020-10-16 10:52:08,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states
[2020-10-16 10:52:08,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:08,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2020-10-16 10:52:08,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240
[2020-10-16 10:52:08,704 INFO L87 Difference]: Start difference. First operand 64 states and 161 transitions. Second operand 16 states.
[2020-10-16 10:52:09,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:09,261 INFO L93 Difference]: Finished difference Result 72 states and 181 transitions.
[2020-10-16 10:52:09,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states.
[2020-10-16 10:52:09,262 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 19
[2020-10-16 10:52:09,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:09,263 INFO L225 Difference]: With dead ends: 72
[2020-10-16 10:52:09,263 INFO L226 Difference]: Without dead ends: 67
[2020-10-16 10:52:09,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=439, Invalid=893, Unknown=0, NotChecked=0, Total=1332
[2020-10-16 10:52:09,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states.
[2020-10-16 10:52:09,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 50.
[2020-10-16 10:52:09,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states.
[2020-10-16 10:52:09,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 122 transitions.
[2020-10-16 10:52:09,265 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 122 transitions. Word has length 19
[2020-10-16 10:52:09,265 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:09,266 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 122 transitions.
[2020-10-16 10:52:09,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states.
[2020-10-16 10:52:09,266 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 122 transitions.
[2020-10-16 10:52:09,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2020-10-16 10:52:09,266 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:09,266 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:09,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69
[2020-10-16 10:52:09,467 INFO L429 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:09,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:09,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1356705901, now seen corresponding path program 69 times
[2020-10-16 10:52:09,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:09,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672107194]
[2020-10-16 10:52:09,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:09,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:09,609 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:09,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672107194]
[2020-10-16 10:52:09,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086510523]
[2020-10-16 10:52:09,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:09,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2020-10-16 10:52:09,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:09,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjunts are in the unsatisfiable core
[2020-10-16 10:52:09,669 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:09,694 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:09,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:09,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13
[2020-10-16 10:52:09,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591153536]
[2020-10-16 10:52:09,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 10:52:09,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:09,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 10:52:09,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210
[2020-10-16 10:52:09,696 INFO L87 Difference]: Start difference. First operand 50 states and 122 transitions. Second operand 15 states.
[2020-10-16 10:52:09,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:09,926 INFO L93 Difference]: Finished difference Result 78 states and 181 transitions.
[2020-10-16 10:52:09,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2020-10-16 10:52:09,926 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 19
[2020-10-16 10:52:09,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:09,927 INFO L225 Difference]: With dead ends: 78
[2020-10-16 10:52:09,928 INFO L226 Difference]: Without dead ends: 72
[2020-10-16 10:52:09,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=213, Invalid=437, Unknown=0, NotChecked=0, Total=650
[2020-10-16 10:52:09,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states.
[2020-10-16 10:52:09,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 58.
[2020-10-16 10:52:09,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states.
[2020-10-16 10:52:09,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 141 transitions.
[2020-10-16 10:52:09,931 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 141 transitions. Word has length 19
[2020-10-16 10:52:09,931 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:09,931 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 141 transitions.
[2020-10-16 10:52:09,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 10:52:09,932 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 141 transitions.
[2020-10-16 10:52:09,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2020-10-16 10:52:09,932 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:09,932 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:10,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:10,142 INFO L429 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:10,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:10,142 INFO L82 PathProgramCache]: Analyzing trace with hash -371514377, now seen corresponding path program 70 times
[2020-10-16 10:52:10,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:10,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911710884]
[2020-10-16 10:52:10,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:10,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:10,288 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:10,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911710884]
[2020-10-16 10:52:10,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60137582]
[2020-10-16 10:52:10,289 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:10,334 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 10:52:10,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:10,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjunts are in the unsatisfiable core
[2020-10-16 10:52:10,336 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:10,353 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:52:10,364 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:10,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:10,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14
[2020-10-16 10:52:10,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603461416]
[2020-10-16 10:52:10,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states
[2020-10-16 10:52:10,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:10,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2020-10-16 10:52:10,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240
[2020-10-16 10:52:10,366 INFO L87 Difference]: Start difference. First operand 58 states and 141 transitions. Second operand 16 states.
[2020-10-16 10:52:10,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:10,650 INFO L93 Difference]: Finished difference Result 90 states and 205 transitions.
[2020-10-16 10:52:10,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2020-10-16 10:52:10,651 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 19
[2020-10-16 10:52:10,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:10,652 INFO L225 Difference]: With dead ends: 90
[2020-10-16 10:52:10,652 INFO L226 Difference]: Without dead ends: 84
[2020-10-16 10:52:10,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=222, Invalid=534, Unknown=0, NotChecked=0, Total=756
[2020-10-16 10:52:10,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states.
[2020-10-16 10:52:10,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 56.
[2020-10-16 10:52:10,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states.
[2020-10-16 10:52:10,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 137 transitions.
[2020-10-16 10:52:10,655 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 137 transitions. Word has length 19
[2020-10-16 10:52:10,655 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:10,655 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 137 transitions.
[2020-10-16 10:52:10,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states.
[2020-10-16 10:52:10,655 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 137 transitions.
[2020-10-16 10:52:10,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2020-10-16 10:52:10,655 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:10,655 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:10,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:10,856 INFO L429 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:10,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:10,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1988673419, now seen corresponding path program 71 times
[2020-10-16 10:52:10,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:10,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871732117]
[2020-10-16 10:52:10,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:10,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:11,004 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:11,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871732117]
[2020-10-16 10:52:11,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460569551]
[2020-10-16 10:52:11,005 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:11,052 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s)
[2020-10-16 10:52:11,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:11,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjunts are in the unsatisfiable core
[2020-10-16 10:52:11,053 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:11,065 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:11,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:11,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13
[2020-10-16 10:52:11,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072262770]
[2020-10-16 10:52:11,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 10:52:11,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:11,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 10:52:11,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210
[2020-10-16 10:52:11,067 INFO L87 Difference]: Start difference. First operand 56 states and 137 transitions. Second operand 15 states.
[2020-10-16 10:52:11,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:11,367 INFO L93 Difference]: Finished difference Result 91 states and 209 transitions.
[2020-10-16 10:52:11,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states.
[2020-10-16 10:52:11,368 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 19
[2020-10-16 10:52:11,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:11,368 INFO L225 Difference]: With dead ends: 91
[2020-10-16 10:52:11,369 INFO L226 Difference]: Without dead ends: 85
[2020-10-16 10:52:11,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=229, Invalid=583, Unknown=0, NotChecked=0, Total=812
[2020-10-16 10:52:11,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states.
[2020-10-16 10:52:11,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 59.
[2020-10-16 10:52:11,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states.
[2020-10-16 10:52:11,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 145 transitions.
[2020-10-16 10:52:11,371 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 145 transitions. Word has length 19
[2020-10-16 10:52:11,372 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:11,372 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 145 transitions.
[2020-10-16 10:52:11,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 10:52:11,377 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 145 transitions.
[2020-10-16 10:52:11,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2020-10-16 10:52:11,378 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:11,378 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:11,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,69 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:11,586 INFO L429 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:11,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:11,586 INFO L82 PathProgramCache]: Analyzing trace with hash -731783719, now seen corresponding path program 72 times
[2020-10-16 10:52:11,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:11,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887565823]
[2020-10-16 10:52:11,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:11,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:11,705 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:11,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887565823]
[2020-10-16 10:52:11,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088700418]
[2020-10-16 10:52:11,706 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:11,757 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s)
[2020-10-16 10:52:11,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:11,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjunts are in the unsatisfiable core
[2020-10-16 10:52:11,758 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:11,777 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:52:11,788 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:11,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:11,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14
[2020-10-16 10:52:11,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52371528]
[2020-10-16 10:52:11,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states
[2020-10-16 10:52:11,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:11,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2020-10-16 10:52:11,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240
[2020-10-16 10:52:11,789 INFO L87 Difference]: Start difference. First operand 59 states and 145 transitions. Second operand 16 states.
[2020-10-16 10:52:12,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:12,134 INFO L93 Difference]: Finished difference Result 99 states and 225 transitions.
[2020-10-16 10:52:12,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2020-10-16 10:52:12,135 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 19
[2020-10-16 10:52:12,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:12,136 INFO L225 Difference]: With dead ends: 99
[2020-10-16 10:52:12,136 INFO L226 Difference]: Without dead ends: 93
[2020-10-16 10:52:12,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=673, Unknown=0, NotChecked=0, Total=930
[2020-10-16 10:52:12,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states.
[2020-10-16 10:52:12,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 58.
[2020-10-16 10:52:12,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states.
[2020-10-16 10:52:12,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 143 transitions.
[2020-10-16 10:52:12,138 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 143 transitions. Word has length 19
[2020-10-16 10:52:12,138 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:12,138 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 143 transitions.
[2020-10-16 10:52:12,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states.
[2020-10-16 10:52:12,138 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 143 transitions.
[2020-10-16 10:52:12,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2020-10-16 10:52:12,139 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:12,139 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:12,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:12,340 INFO L429 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:12,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:12,340 INFO L82 PathProgramCache]: Analyzing trace with hash 884408791, now seen corresponding path program 73 times
[2020-10-16 10:52:12,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:12,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031932534]
[2020-10-16 10:52:12,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:12,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:12,457 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:12,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031932534]
[2020-10-16 10:52:12,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803176856]
[2020-10-16 10:52:12,457 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:12,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:12,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjunts are in the unsatisfiable core
[2020-10-16 10:52:12,510 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:12,529 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:12,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:12,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13
[2020-10-16 10:52:12,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242258851]
[2020-10-16 10:52:12,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 10:52:12,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:12,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 10:52:12,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210
[2020-10-16 10:52:12,531 INFO L87 Difference]: Start difference. First operand 58 states and 143 transitions. Second operand 15 states.
[2020-10-16 10:52:12,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:12,898 INFO L93 Difference]: Finished difference Result 99 states and 227 transitions.
[2020-10-16 10:52:12,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2020-10-16 10:52:12,898 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 19
[2020-10-16 10:52:12,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:12,899 INFO L225 Difference]: With dead ends: 99
[2020-10-16 10:52:12,900 INFO L226 Difference]: Without dead ends: 93
[2020-10-16 10:52:12,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=278, Invalid=714, Unknown=0, NotChecked=0, Total=992
[2020-10-16 10:52:12,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states.
[2020-10-16 10:52:12,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 61.
[2020-10-16 10:52:12,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states.
[2020-10-16 10:52:12,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 151 transitions.
[2020-10-16 10:52:12,903 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 151 transitions. Word has length 19
[2020-10-16 10:52:12,903 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:12,903 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 151 transitions.
[2020-10-16 10:52:12,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 10:52:12,903 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 151 transitions.
[2020-10-16 10:52:12,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2020-10-16 10:52:12,903 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:12,904 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:13,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74
[2020-10-16 10:52:13,104 INFO L429 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:13,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:13,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1404151867, now seen corresponding path program 74 times
[2020-10-16 10:52:13,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:13,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232870968]
[2020-10-16 10:52:13,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:13,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:13,239 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:13,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232870968]
[2020-10-16 10:52:13,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955320037]
[2020-10-16 10:52:13,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:13,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 10:52:13,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:13,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjunts are in the unsatisfiable core
[2020-10-16 10:52:13,282 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:13,303 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:52:13,314 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:13,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:13,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14
[2020-10-16 10:52:13,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179528549]
[2020-10-16 10:52:13,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states
[2020-10-16 10:52:13,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:13,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2020-10-16 10:52:13,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240
[2020-10-16 10:52:13,316 INFO L87 Difference]: Start difference. First operand 61 states and 151 transitions. Second operand 16 states.
[2020-10-16 10:52:13,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:13,746 INFO L93 Difference]: Finished difference Result 96 states and 221 transitions.
[2020-10-16 10:52:13,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2020-10-16 10:52:13,747 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 19
[2020-10-16 10:52:13,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:13,748 INFO L225 Difference]: With dead ends: 96
[2020-10-16 10:52:13,748 INFO L226 Difference]: Without dead ends: 90
[2020-10-16 10:52:13,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=286, Invalid=770, Unknown=0, NotChecked=0, Total=1056
[2020-10-16 10:52:13,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states.
[2020-10-16 10:52:13,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 60.
[2020-10-16 10:52:13,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states.
[2020-10-16 10:52:13,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 149 transitions.
[2020-10-16 10:52:13,751 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 149 transitions. Word has length 19
[2020-10-16 10:52:13,751 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:13,752 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 149 transitions.
[2020-10-16 10:52:13,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states.
[2020-10-16 10:52:13,752 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 149 transitions.
[2020-10-16 10:52:13,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2020-10-16 10:52:13,752 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:13,752 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:13,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:13,954 INFO L429 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:13,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:13,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1235504199, now seen corresponding path program 75 times
[2020-10-16 10:52:13,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:13,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63995709]
[2020-10-16 10:52:13,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:13,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:14,074 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:14,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63995709]
[2020-10-16 10:52:14,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602110390]
[2020-10-16 10:52:14,075 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:14,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2020-10-16 10:52:14,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:14,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjunts are in the unsatisfiable core
[2020-10-16 10:52:14,121 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:14,136 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:14,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:14,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13
[2020-10-16 10:52:14,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714032831]
[2020-10-16 10:52:14,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 10:52:14,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:14,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 10:52:14,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210
[2020-10-16 10:52:14,137 INFO L87 Difference]: Start difference. First operand 60 states and 149 transitions. Second operand 15 states.
[2020-10-16 10:52:14,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:14,544 INFO L93 Difference]: Finished difference Result 97 states and 225 transitions.
[2020-10-16 10:52:14,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states.
[2020-10-16 10:52:14,545 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 19
[2020-10-16 10:52:14,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:14,546 INFO L225 Difference]: With dead ends: 97
[2020-10-16 10:52:14,546 INFO L226 Difference]: Without dead ends: 91
[2020-10-16 10:52:14,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=322, Invalid=800, Unknown=0, NotChecked=0, Total=1122
[2020-10-16 10:52:14,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states.
[2020-10-16 10:52:14,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 63.
[2020-10-16 10:52:14,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states.
[2020-10-16 10:52:14,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 157 transitions.
[2020-10-16 10:52:14,550 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 157 transitions. Word has length 19
[2020-10-16 10:52:14,550 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:14,550 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 157 transitions.
[2020-10-16 10:52:14,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 10:52:14,551 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 157 transitions.
[2020-10-16 10:52:14,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2020-10-16 10:52:14,551 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:14,551 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:14,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76
[2020-10-16 10:52:14,760 INFO L429 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:14,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:14,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1339335453, now seen corresponding path program 76 times
[2020-10-16 10:52:14,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:14,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331414635]
[2020-10-16 10:52:14,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:14,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:14,873 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:14,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331414635]
[2020-10-16 10:52:14,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985203629]
[2020-10-16 10:52:14,874 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:14,953 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 10:52:14,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:14,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjunts are in the unsatisfiable core
[2020-10-16 10:52:14,957 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:14,983 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:52:14,995 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:14,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:14,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14
[2020-10-16 10:52:14,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456316203]
[2020-10-16 10:52:14,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states
[2020-10-16 10:52:14,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:14,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2020-10-16 10:52:14,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240
[2020-10-16 10:52:14,998 INFO L87 Difference]: Start difference. First operand 63 states and 157 transitions. Second operand 16 states.
[2020-10-16 10:52:15,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:15,596 INFO L93 Difference]: Finished difference Result 94 states and 219 transitions.
[2020-10-16 10:52:15,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states.
[2020-10-16 10:52:15,597 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 19
[2020-10-16 10:52:15,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:15,598 INFO L225 Difference]: With dead ends: 94
[2020-10-16 10:52:15,598 INFO L226 Difference]: Without dead ends: 88
[2020-10-16 10:52:15,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=331, Invalid=859, Unknown=0, NotChecked=0, Total=1190
[2020-10-16 10:52:15,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states.
[2020-10-16 10:52:15,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 62.
[2020-10-16 10:52:15,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states.
[2020-10-16 10:52:15,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 155 transitions.
[2020-10-16 10:52:15,602 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 155 transitions. Word has length 19
[2020-10-16 10:52:15,603 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:15,603 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 155 transitions.
[2020-10-16 10:52:15,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states.
[2020-10-16 10:52:15,603 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 155 transitions.
[2020-10-16 10:52:15,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2020-10-16 10:52:15,604 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:15,604 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:15,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:15,815 INFO L429 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:15,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:15,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1810331163, now seen corresponding path program 77 times
[2020-10-16 10:52:15,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:15,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874481167]
[2020-10-16 10:52:15,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:15,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:15,978 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:15,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874481167]
[2020-10-16 10:52:15,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898341142]
[2020-10-16 10:52:15,979 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:16,055 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s)
[2020-10-16 10:52:16,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:16,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjunts are in the unsatisfiable core
[2020-10-16 10:52:16,058 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:16,094 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:16,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:16,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13
[2020-10-16 10:52:16,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259708114]
[2020-10-16 10:52:16,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 10:52:16,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:16,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 10:52:16,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210
[2020-10-16 10:52:16,097 INFO L87 Difference]: Start difference. First operand 62 states and 155 transitions. Second operand 15 states.
[2020-10-16 10:52:16,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:16,574 INFO L93 Difference]: Finished difference Result 95 states and 223 transitions.
[2020-10-16 10:52:16,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states.
[2020-10-16 10:52:16,575 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 19
[2020-10-16 10:52:16,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:16,575 INFO L225 Difference]: With dead ends: 95
[2020-10-16 10:52:16,576 INFO L226 Difference]: Without dead ends: 89
[2020-10-16 10:52:16,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=382, Invalid=878, Unknown=0, NotChecked=0, Total=1260
[2020-10-16 10:52:16,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states.
[2020-10-16 10:52:16,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 65.
[2020-10-16 10:52:16,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states.
[2020-10-16 10:52:16,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 163 transitions.
[2020-10-16 10:52:16,578 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 163 transitions. Word has length 19
[2020-10-16 10:52:16,579 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:16,579 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 163 transitions.
[2020-10-16 10:52:16,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 10:52:16,579 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 163 transitions.
[2020-10-16 10:52:16,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2020-10-16 10:52:16,579 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:16,580 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:16,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78
[2020-10-16 10:52:16,789 INFO L429 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:16,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:16,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1826418303, now seen corresponding path program 78 times
[2020-10-16 10:52:16,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:16,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885172734]
[2020-10-16 10:52:16,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:16,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:16,904 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:16,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885172734]
[2020-10-16 10:52:16,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421402726]
[2020-10-16 10:52:16,905 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:16,953 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s)
[2020-10-16 10:52:16,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:16,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjunts are in the unsatisfiable core
[2020-10-16 10:52:16,955 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:16,986 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:52:16,997 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:16,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:16,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14
[2020-10-16 10:52:16,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995925740]
[2020-10-16 10:52:16,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states
[2020-10-16 10:52:16,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:16,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2020-10-16 10:52:16,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240
[2020-10-16 10:52:16,999 INFO L87 Difference]: Start difference. First operand 65 states and 163 transitions. Second operand 16 states.
[2020-10-16 10:52:17,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:17,580 INFO L93 Difference]: Finished difference Result 92 states and 217 transitions.
[2020-10-16 10:52:17,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states.
[2020-10-16 10:52:17,580 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 19
[2020-10-16 10:52:17,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:17,581 INFO L225 Difference]: With dead ends: 92
[2020-10-16 10:52:17,581 INFO L226 Difference]: Without dead ends: 86
[2020-10-16 10:52:17,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=392, Invalid=940, Unknown=0, NotChecked=0, Total=1332
[2020-10-16 10:52:17,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states.
[2020-10-16 10:52:17,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 64.
[2020-10-16 10:52:17,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states.
[2020-10-16 10:52:17,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 161 transitions.
[2020-10-16 10:52:17,586 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 161 transitions. Word has length 19
[2020-10-16 10:52:17,586 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:17,586 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 161 transitions.
[2020-10-16 10:52:17,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states.
[2020-10-16 10:52:17,586 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 161 transitions.
[2020-10-16 10:52:17,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2020-10-16 10:52:17,587 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:17,587 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:17,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:17,796 INFO L429 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:17,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:17,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1826908413, now seen corresponding path program 79 times
[2020-10-16 10:52:17,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:17,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619914917]
[2020-10-16 10:52:17,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:17,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:17,902 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:17,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619914917]
[2020-10-16 10:52:17,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434530559]
[2020-10-16 10:52:17,902 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:17,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:17,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjunts are in the unsatisfiable core
[2020-10-16 10:52:17,949 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:17,963 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:17,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:17,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13
[2020-10-16 10:52:17,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645328694]
[2020-10-16 10:52:17,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 10:52:17,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:17,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 10:52:17,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210
[2020-10-16 10:52:17,966 INFO L87 Difference]: Start difference. First operand 64 states and 161 transitions. Second operand 15 states.
[2020-10-16 10:52:18,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:18,456 INFO L93 Difference]: Finished difference Result 112 states and 267 transitions.
[2020-10-16 10:52:18,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states.
[2020-10-16 10:52:18,457 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 19
[2020-10-16 10:52:18,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:18,458 INFO L225 Difference]: With dead ends: 112
[2020-10-16 10:52:18,458 INFO L226 Difference]: Without dead ends: 106
[2020-10-16 10:52:18,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=458, Invalid=948, Unknown=0, NotChecked=0, Total=1406
[2020-10-16 10:52:18,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states.
[2020-10-16 10:52:18,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 70.
[2020-10-16 10:52:18,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states.
[2020-10-16 10:52:18,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 181 transitions.
[2020-10-16 10:52:18,461 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 181 transitions. Word has length 19
[2020-10-16 10:52:18,461 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:18,462 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 181 transitions.
[2020-10-16 10:52:18,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 10:52:18,462 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 181 transitions.
[2020-10-16 10:52:18,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2020-10-16 10:52:18,462 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:18,463 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:18,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:18,671 INFO L429 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:18,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:18,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1826925153, now seen corresponding path program 80 times
[2020-10-16 10:52:18,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:18,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246572395]
[2020-10-16 10:52:18,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:18,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:18,773 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:18,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246572395]
[2020-10-16 10:52:18,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772035390]
[2020-10-16 10:52:18,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:18,846 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 10:52:18,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:18,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjunts are in the unsatisfiable core
[2020-10-16 10:52:18,849 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:18,874 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:52:18,891 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:18,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:18,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14
[2020-10-16 10:52:18,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012813003]
[2020-10-16 10:52:18,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states
[2020-10-16 10:52:18,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:18,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2020-10-16 10:52:18,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240
[2020-10-16 10:52:18,893 INFO L87 Difference]: Start difference. First operand 70 states and 181 transitions. Second operand 16 states.
[2020-10-16 10:52:19,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:19,529 INFO L93 Difference]: Finished difference Result 93 states and 223 transitions.
[2020-10-16 10:52:19,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2020-10-16 10:52:19,530 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 19
[2020-10-16 10:52:19,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:19,531 INFO L225 Difference]: With dead ends: 93
[2020-10-16 10:52:19,531 INFO L226 Difference]: Without dead ends: 85
[2020-10-16 10:52:19,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=469, Invalid=1013, Unknown=0, NotChecked=0, Total=1482
[2020-10-16 10:52:19,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states.
[2020-10-16 10:52:19,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 67.
[2020-10-16 10:52:19,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states.
[2020-10-16 10:52:19,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 169 transitions.
[2020-10-16 10:52:19,533 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 169 transitions. Word has length 19
[2020-10-16 10:52:19,534 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:19,534 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 169 transitions.
[2020-10-16 10:52:19,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states.
[2020-10-16 10:52:19,534 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 169 transitions.
[2020-10-16 10:52:19,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2020-10-16 10:52:19,534 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:19,534 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:19,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,78 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:19,743 INFO L429 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:19,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:19,743 INFO L82 PathProgramCache]: Analyzing trace with hash 846490750, now seen corresponding path program 81 times
[2020-10-16 10:52:19,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:19,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441209424]
[2020-10-16 10:52:19,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:19,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:19,914 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:19,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441209424]
[2020-10-16 10:52:19,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751214516]
[2020-10-16 10:52:19,914 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:19,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2020-10-16 10:52:19,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:19,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjunts are in the unsatisfiable core
[2020-10-16 10:52:19,960 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:19,971 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:19,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:19,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14
[2020-10-16 10:52:19,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261133800]
[2020-10-16 10:52:19,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states
[2020-10-16 10:52:19,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:19,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2020-10-16 10:52:19,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240
[2020-10-16 10:52:19,973 INFO L87 Difference]: Start difference. First operand 67 states and 169 transitions. Second operand 16 states.
[2020-10-16 10:52:20,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:20,272 INFO L93 Difference]: Finished difference Result 104 states and 243 transitions.
[2020-10-16 10:52:20,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2020-10-16 10:52:20,273 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 20
[2020-10-16 10:52:20,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:20,274 INFO L225 Difference]: With dead ends: 104
[2020-10-16 10:52:20,274 INFO L226 Difference]: Without dead ends: 98
[2020-10-16 10:52:20,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=247, Invalid=565, Unknown=0, NotChecked=0, Total=812
[2020-10-16 10:52:20,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states.
[2020-10-16 10:52:20,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 69.
[2020-10-16 10:52:20,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states.
[2020-10-16 10:52:20,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 173 transitions.
[2020-10-16 10:52:20,276 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 173 transitions. Word has length 20
[2020-10-16 10:52:20,277 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:20,277 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 173 transitions.
[2020-10-16 10:52:20,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states.
[2020-10-16 10:52:20,277 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 173 transitions.
[2020-10-16 10:52:20,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2020-10-16 10:52:20,277 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:20,277 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:20,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:20,485 INFO L429 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:20,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:20,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1831682274, now seen corresponding path program 82 times
[2020-10-16 10:52:20,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:20,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018041637]
[2020-10-16 10:52:20,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:20,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:20,651 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:20,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018041637]
[2020-10-16 10:52:20,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643575201]
[2020-10-16 10:52:20,652 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:20,696 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 10:52:20,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:20,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjunts are in the unsatisfiable core
[2020-10-16 10:52:20,699 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:20,720 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:52:20,731 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:20,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:20,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15
[2020-10-16 10:52:20,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252247785]
[2020-10-16 10:52:20,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 10:52:20,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:20,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 10:52:20,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272
[2020-10-16 10:52:20,733 INFO L87 Difference]: Start difference. First operand 69 states and 173 transitions. Second operand 17 states.
[2020-10-16 10:52:21,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:21,096 INFO L93 Difference]: Finished difference Result 101 states and 237 transitions.
[2020-10-16 10:52:21,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2020-10-16 10:52:21,096 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 20
[2020-10-16 10:52:21,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:21,097 INFO L225 Difference]: With dead ends: 101
[2020-10-16 10:52:21,098 INFO L226 Difference]: Without dead ends: 95
[2020-10-16 10:52:21,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=285, Invalid=707, Unknown=0, NotChecked=0, Total=992
[2020-10-16 10:52:21,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states.
[2020-10-16 10:52:21,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 68.
[2020-10-16 10:52:21,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states.
[2020-10-16 10:52:21,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 171 transitions.
[2020-10-16 10:52:21,101 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 171 transitions. Word has length 20
[2020-10-16 10:52:21,101 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:21,101 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 171 transitions.
[2020-10-16 10:52:21,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 10:52:21,101 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 171 transitions.
[2020-10-16 10:52:21,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2020-10-16 10:52:21,101 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:21,102 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:21,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:21,302 INFO L429 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:21,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:21,303 INFO L82 PathProgramCache]: Analyzing trace with hash 214523232, now seen corresponding path program 83 times
[2020-10-16 10:52:21,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:21,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643277603]
[2020-10-16 10:52:21,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:21,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:21,458 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:21,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643277603]
[2020-10-16 10:52:21,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232294037]
[2020-10-16 10:52:21,459 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:21,504 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s)
[2020-10-16 10:52:21,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:21,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjunts are in the unsatisfiable core
[2020-10-16 10:52:21,506 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:21,518 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:21,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:21,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14
[2020-10-16 10:52:21,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588789270]
[2020-10-16 10:52:21,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states
[2020-10-16 10:52:21,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:21,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2020-10-16 10:52:21,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240
[2020-10-16 10:52:21,520 INFO L87 Difference]: Start difference. First operand 68 states and 171 transitions. Second operand 16 states.
[2020-10-16 10:52:21,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:21,875 INFO L93 Difference]: Finished difference Result 98 states and 231 transitions.
[2020-10-16 10:52:21,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states.
[2020-10-16 10:52:21,876 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 20
[2020-10-16 10:52:21,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:21,877 INFO L225 Difference]: With dead ends: 98
[2020-10-16 10:52:21,877 INFO L226 Difference]: Without dead ends: 92
[2020-10-16 10:52:21,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=260, Invalid=670, Unknown=0, NotChecked=0, Total=930
[2020-10-16 10:52:21,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states.
[2020-10-16 10:52:21,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 69.
[2020-10-16 10:52:21,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states.
[2020-10-16 10:52:21,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 173 transitions.
[2020-10-16 10:52:21,880 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 173 transitions. Word has length 20
[2020-10-16 10:52:21,880 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:21,881 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 173 transitions.
[2020-10-16 10:52:21,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states.
[2020-10-16 10:52:21,881 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 173 transitions.
[2020-10-16 10:52:21,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2020-10-16 10:52:21,881 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:21,881 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:22,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:22,084 INFO L429 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:22,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:22,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1471412932, now seen corresponding path program 84 times
[2020-10-16 10:52:22,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:22,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079975941]
[2020-10-16 10:52:22,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:22,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:22,233 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:22,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079975941]
[2020-10-16 10:52:22,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269133817]
[2020-10-16 10:52:22,234 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:22,282 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s)
[2020-10-16 10:52:22,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:22,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjunts are in the unsatisfiable core
[2020-10-16 10:52:22,284 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:22,307 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:52:22,320 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:22,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:22,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15
[2020-10-16 10:52:22,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510245918]
[2020-10-16 10:52:22,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 10:52:22,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:22,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 10:52:22,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272
[2020-10-16 10:52:22,322 INFO L87 Difference]: Start difference. First operand 69 states and 173 transitions. Second operand 17 states.
[2020-10-16 10:52:22,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:22,782 INFO L93 Difference]: Finished difference Result 97 states and 229 transitions.
[2020-10-16 10:52:22,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2020-10-16 10:52:22,782 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 20
[2020-10-16 10:52:22,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:22,783 INFO L225 Difference]: With dead ends: 97
[2020-10-16 10:52:22,783 INFO L226 Difference]: Without dead ends: 91
[2020-10-16 10:52:22,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122
[2020-10-16 10:52:22,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states.
[2020-10-16 10:52:22,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 68.
[2020-10-16 10:52:22,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states.
[2020-10-16 10:52:22,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 171 transitions.
[2020-10-16 10:52:22,789 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 171 transitions. Word has length 20
[2020-10-16 10:52:22,789 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:22,790 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 171 transitions.
[2020-10-16 10:52:22,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 10:52:22,790 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 171 transitions.
[2020-10-16 10:52:22,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2020-10-16 10:52:22,793 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:22,793 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:23,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:23,003 INFO L429 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:23,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:23,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1207361854, now seen corresponding path program 85 times
[2020-10-16 10:52:23,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:23,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758641933]
[2020-10-16 10:52:23,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:23,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:23,133 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:23,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758641933]
[2020-10-16 10:52:23,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896971874]
[2020-10-16 10:52:23,134 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:23,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:23,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjunts are in the unsatisfiable core
[2020-10-16 10:52:23,188 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:23,201 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:23,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:23,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14
[2020-10-16 10:52:23,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131140549]
[2020-10-16 10:52:23,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states
[2020-10-16 10:52:23,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:23,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2020-10-16 10:52:23,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240
[2020-10-16 10:52:23,203 INFO L87 Difference]: Start difference. First operand 68 states and 171 transitions. Second operand 16 states.
[2020-10-16 10:52:23,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:23,606 INFO L93 Difference]: Finished difference Result 94 states and 223 transitions.
[2020-10-16 10:52:23,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2020-10-16 10:52:23,607 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 20
[2020-10-16 10:52:23,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:23,608 INFO L225 Difference]: With dead ends: 94
[2020-10-16 10:52:23,608 INFO L226 Difference]: Without dead ends: 88
[2020-10-16 10:52:23,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=289, Invalid=767, Unknown=0, NotChecked=0, Total=1056
[2020-10-16 10:52:23,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states.
[2020-10-16 10:52:23,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 69.
[2020-10-16 10:52:23,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states.
[2020-10-16 10:52:23,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 173 transitions.
[2020-10-16 10:52:23,611 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 173 transitions. Word has length 20
[2020-10-16 10:52:23,611 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:23,611 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 173 transitions.
[2020-10-16 10:52:23,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states.
[2020-10-16 10:52:23,611 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 173 transitions.
[2020-10-16 10:52:23,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2020-10-16 10:52:23,611 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:23,611 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:23,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86
[2020-10-16 10:52:23,812 INFO L429 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:23,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:23,813 INFO L82 PathProgramCache]: Analyzing trace with hash -687618778, now seen corresponding path program 86 times
[2020-10-16 10:52:23,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:23,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875571781]
[2020-10-16 10:52:23,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:23,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:23,961 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:23,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875571781]
[2020-10-16 10:52:23,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232989667]
[2020-10-16 10:52:23,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:24,005 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 10:52:24,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:24,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjunts are in the unsatisfiable core
[2020-10-16 10:52:24,007 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:24,030 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:52:24,042 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:24,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:24,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15
[2020-10-16 10:52:24,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580086820]
[2020-10-16 10:52:24,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 10:52:24,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:24,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 10:52:24,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272
[2020-10-16 10:52:24,043 INFO L87 Difference]: Start difference. First operand 69 states and 173 transitions. Second operand 17 states.
[2020-10-16 10:52:24,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:24,580 INFO L93 Difference]: Finished difference Result 93 states and 221 transitions.
[2020-10-16 10:52:24,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states.
[2020-10-16 10:52:24,581 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 20
[2020-10-16 10:52:24,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:24,582 INFO L225 Difference]: With dead ends: 93
[2020-10-16 10:52:24,582 INFO L226 Difference]: Without dead ends: 87
[2020-10-16 10:52:24,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260
[2020-10-16 10:52:24,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states.
[2020-10-16 10:52:24,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 68.
[2020-10-16 10:52:24,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states.
[2020-10-16 10:52:24,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 171 transitions.
[2020-10-16 10:52:24,585 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 171 transitions. Word has length 20
[2020-10-16 10:52:24,585 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:24,585 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 171 transitions.
[2020-10-16 10:52:24,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 10:52:24,585 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 171 transitions.
[2020-10-16 10:52:24,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2020-10-16 10:52:24,585 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:24,585 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:24,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:24,786 INFO L429 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:24,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:24,787 INFO L82 PathProgramCache]: Analyzing trace with hash 967692452, now seen corresponding path program 87 times
[2020-10-16 10:52:24,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:24,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595109727]
[2020-10-16 10:52:24,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:24,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:24,921 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:24,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595109727]
[2020-10-16 10:52:24,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560972917]
[2020-10-16 10:52:24,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:24,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2020-10-16 10:52:24,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:24,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjunts are in the unsatisfiable core
[2020-10-16 10:52:24,974 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:24,987 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:24,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:24,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14
[2020-10-16 10:52:24,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708646647]
[2020-10-16 10:52:24,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states
[2020-10-16 10:52:24,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:24,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2020-10-16 10:52:24,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240
[2020-10-16 10:52:24,989 INFO L87 Difference]: Start difference. First operand 68 states and 171 transitions. Second operand 16 states.
[2020-10-16 10:52:25,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:25,438 INFO L93 Difference]: Finished difference Result 90 states and 215 transitions.
[2020-10-16 10:52:25,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states.
[2020-10-16 10:52:25,438 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 20
[2020-10-16 10:52:25,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:25,439 INFO L225 Difference]: With dead ends: 90
[2020-10-16 10:52:25,440 INFO L226 Difference]: Without dead ends: 84
[2020-10-16 10:52:25,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=334, Invalid=856, Unknown=0, NotChecked=0, Total=1190
[2020-10-16 10:52:25,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states.
[2020-10-16 10:52:25,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 69.
[2020-10-16 10:52:25,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states.
[2020-10-16 10:52:25,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 173 transitions.
[2020-10-16 10:52:25,443 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 173 transitions. Word has length 20
[2020-10-16 10:52:25,443 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:25,443 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 173 transitions.
[2020-10-16 10:52:25,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states.
[2020-10-16 10:52:25,443 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 173 transitions.
[2020-10-16 10:52:25,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2020-10-16 10:52:25,443 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:25,444 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:25,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88
[2020-10-16 10:52:25,644 INFO L429 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:25,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:25,645 INFO L82 PathProgramCache]: Analyzing trace with hash -752435192, now seen corresponding path program 88 times
[2020-10-16 10:52:25,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:25,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123135455]
[2020-10-16 10:52:25,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:25,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:25,781 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:25,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123135455]
[2020-10-16 10:52:25,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625211441]
[2020-10-16 10:52:25,781 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:25,824 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 10:52:25,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:25,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjunts are in the unsatisfiable core
[2020-10-16 10:52:25,826 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:25,844 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:52:25,862 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:25,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:25,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15
[2020-10-16 10:52:25,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783831602]
[2020-10-16 10:52:25,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 10:52:25,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:25,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 10:52:25,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272
[2020-10-16 10:52:25,863 INFO L87 Difference]: Start difference. First operand 69 states and 173 transitions. Second operand 17 states.
[2020-10-16 10:52:26,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:26,469 INFO L93 Difference]: Finished difference Result 89 states and 213 transitions.
[2020-10-16 10:52:26,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states.
[2020-10-16 10:52:26,470 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 20
[2020-10-16 10:52:26,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:26,471 INFO L225 Difference]: With dead ends: 89
[2020-10-16 10:52:26,471 INFO L226 Difference]: Without dead ends: 83
[2020-10-16 10:52:26,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=393, Invalid=1013, Unknown=0, NotChecked=0, Total=1406
[2020-10-16 10:52:26,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states.
[2020-10-16 10:52:26,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 68.
[2020-10-16 10:52:26,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states.
[2020-10-16 10:52:26,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 171 transitions.
[2020-10-16 10:52:26,474 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 171 transitions. Word has length 20
[2020-10-16 10:52:26,474 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:26,474 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 171 transitions.
[2020-10-16 10:52:26,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 10:52:26,474 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 171 transitions.
[2020-10-16 10:52:26,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2020-10-16 10:52:26,474 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:26,474 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:26,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:26,675 INFO L429 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:26,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:26,676 INFO L82 PathProgramCache]: Analyzing trace with hash -281439482, now seen corresponding path program 89 times
[2020-10-16 10:52:26,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:26,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501201887]
[2020-10-16 10:52:26,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:26,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:26,807 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:26,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501201887]
[2020-10-16 10:52:26,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773294692]
[2020-10-16 10:52:26,808 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:26,871 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s)
[2020-10-16 10:52:26,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:26,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjunts are in the unsatisfiable core
[2020-10-16 10:52:26,873 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:26,903 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:26,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:26,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14
[2020-10-16 10:52:26,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634834317]
[2020-10-16 10:52:26,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states
[2020-10-16 10:52:26,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:26,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2020-10-16 10:52:26,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240
[2020-10-16 10:52:26,905 INFO L87 Difference]: Start difference. First operand 68 states and 171 transitions. Second operand 16 states.
[2020-10-16 10:52:27,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:27,410 INFO L93 Difference]: Finished difference Result 86 states and 207 transitions.
[2020-10-16 10:52:27,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states.
[2020-10-16 10:52:27,411 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 20
[2020-10-16 10:52:27,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:27,412 INFO L225 Difference]: With dead ends: 86
[2020-10-16 10:52:27,412 INFO L226 Difference]: Without dead ends: 80
[2020-10-16 10:52:27,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=395, Invalid=937, Unknown=0, NotChecked=0, Total=1332
[2020-10-16 10:52:27,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states.
[2020-10-16 10:52:27,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 69.
[2020-10-16 10:52:27,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states.
[2020-10-16 10:52:27,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 173 transitions.
[2020-10-16 10:52:27,415 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 173 transitions. Word has length 20
[2020-10-16 10:52:27,416 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:27,416 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 173 transitions.
[2020-10-16 10:52:27,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states.
[2020-10-16 10:52:27,416 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 173 transitions.
[2020-10-16 10:52:27,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2020-10-16 10:52:27,417 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:27,417 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:27,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,87 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:27,626 INFO L429 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:27,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:27,626 INFO L82 PathProgramCache]: Analyzing trace with hash -265352342, now seen corresponding path program 90 times
[2020-10-16 10:52:27,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:27,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40014332]
[2020-10-16 10:52:27,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:27,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:27,757 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:27,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40014332]
[2020-10-16 10:52:27,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896669644]
[2020-10-16 10:52:27,757 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:27,802 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s)
[2020-10-16 10:52:27,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:27,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjunts are in the unsatisfiable core
[2020-10-16 10:52:27,805 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:27,823 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:52:27,837 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:27,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:27,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15
[2020-10-16 10:52:27,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398067125]
[2020-10-16 10:52:27,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 10:52:27,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:27,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 10:52:27,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272
[2020-10-16 10:52:27,838 INFO L87 Difference]: Start difference. First operand 69 states and 173 transitions. Second operand 17 states.
[2020-10-16 10:52:28,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:28,536 INFO L93 Difference]: Finished difference Result 85 states and 205 transitions.
[2020-10-16 10:52:28,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2020-10-16 10:52:28,536 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 20
[2020-10-16 10:52:28,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:28,537 INFO L225 Difference]: With dead ends: 85
[2020-10-16 10:52:28,537 INFO L226 Difference]: Without dead ends: 79
[2020-10-16 10:52:28,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=461, Invalid=1099, Unknown=0, NotChecked=0, Total=1560
[2020-10-16 10:52:28,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states.
[2020-10-16 10:52:28,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 68.
[2020-10-16 10:52:28,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states.
[2020-10-16 10:52:28,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 171 transitions.
[2020-10-16 10:52:28,541 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 171 transitions. Word has length 20
[2020-10-16 10:52:28,541 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:28,541 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 171 transitions.
[2020-10-16 10:52:28,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 10:52:28,541 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 171 transitions.
[2020-10-16 10:52:28,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2020-10-16 10:52:28,541 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:28,542 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:28,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,88 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:28,750 INFO L429 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:28,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:28,750 INFO L82 PathProgramCache]: Analyzing trace with hash -264862232, now seen corresponding path program 91 times
[2020-10-16 10:52:28,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:28,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938905209]
[2020-10-16 10:52:28,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:28,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:28,881 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:28,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938905209]
[2020-10-16 10:52:28,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276852522]
[2020-10-16 10:52:28,882 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:28,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:28,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjunts are in the unsatisfiable core
[2020-10-16 10:52:28,927 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:28,943 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:28,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:28,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14
[2020-10-16 10:52:28,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164073191]
[2020-10-16 10:52:28,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states
[2020-10-16 10:52:28,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:28,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2020-10-16 10:52:28,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240
[2020-10-16 10:52:28,945 INFO L87 Difference]: Start difference. First operand 68 states and 171 transitions. Second operand 16 states.
[2020-10-16 10:52:29,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:29,513 INFO L93 Difference]: Finished difference Result 101 states and 245 transitions.
[2020-10-16 10:52:29,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states.
[2020-10-16 10:52:29,514 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 20
[2020-10-16 10:52:29,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:29,515 INFO L225 Difference]: With dead ends: 101
[2020-10-16 10:52:29,515 INFO L226 Difference]: Without dead ends: 95
[2020-10-16 10:52:29,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=472, Invalid=1010, Unknown=0, NotChecked=0, Total=1482
[2020-10-16 10:52:29,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states.
[2020-10-16 10:52:29,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 72.
[2020-10-16 10:52:29,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states.
[2020-10-16 10:52:29,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 185 transitions.
[2020-10-16 10:52:29,518 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 185 transitions. Word has length 20
[2020-10-16 10:52:29,518 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:29,518 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 185 transitions.
[2020-10-16 10:52:29,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states.
[2020-10-16 10:52:29,518 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 185 transitions.
[2020-10-16 10:52:29,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2020-10-16 10:52:29,519 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:29,519 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:29,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:29,720 INFO L429 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:29,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:29,720 INFO L82 PathProgramCache]: Analyzing trace with hash -264845492, now seen corresponding path program 92 times
[2020-10-16 10:52:29,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:29,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848616680]
[2020-10-16 10:52:29,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:29,845 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:29,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848616680]
[2020-10-16 10:52:29,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829827014]
[2020-10-16 10:52:29,846 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:29,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 10:52:29,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:29,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 17 conjunts are in the unsatisfiable core
[2020-10-16 10:52:29,894 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:29,927 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:29,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:29,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15
[2020-10-16 10:52:29,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965024626]
[2020-10-16 10:52:29,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 10:52:29,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:29,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 10:52:29,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272
[2020-10-16 10:52:29,929 INFO L87 Difference]: Start difference. First operand 72 states and 185 transitions. Second operand 17 states.
[2020-10-16 10:52:30,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:30,588 INFO L93 Difference]: Finished difference Result 80 states and 197 transitions.
[2020-10-16 10:52:30,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2020-10-16 10:52:30,589 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 20
[2020-10-16 10:52:30,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:30,590 INFO L225 Difference]: With dead ends: 80
[2020-10-16 10:52:30,590 INFO L226 Difference]: Without dead ends: 72
[2020-10-16 10:52:30,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=447, Invalid=1113, Unknown=0, NotChecked=0, Total=1560
[2020-10-16 10:52:30,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states.
[2020-10-16 10:52:30,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 53.
[2020-10-16 10:52:30,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states.
[2020-10-16 10:52:30,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 128 transitions.
[2020-10-16 10:52:30,593 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 128 transitions. Word has length 20
[2020-10-16 10:52:30,593 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:30,593 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 128 transitions.
[2020-10-16 10:52:30,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 10:52:30,594 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 128 transitions.
[2020-10-16 10:52:30,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2020-10-16 10:52:30,594 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:30,594 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:30,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:30,800 INFO L429 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:30,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:30,800 INFO L82 PathProgramCache]: Analyzing trace with hash 800121202, now seen corresponding path program 93 times
[2020-10-16 10:52:30,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:30,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088529038]
[2020-10-16 10:52:30,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:30,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:30,915 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:30,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088529038]
[2020-10-16 10:52:30,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602315902]
[2020-10-16 10:52:30,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:30,962 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2020-10-16 10:52:30,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:30,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjunts are in the unsatisfiable core
[2020-10-16 10:52:30,964 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:30,981 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-10-16 10:52:30,996 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:30,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:30,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15
[2020-10-16 10:52:30,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808421666]
[2020-10-16 10:52:30,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 10:52:30,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:30,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 10:52:30,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272
[2020-10-16 10:52:30,999 INFO L87 Difference]: Start difference. First operand 53 states and 128 transitions. Second operand 17 states.
[2020-10-16 10:52:31,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:31,657 INFO L93 Difference]: Finished difference Result 92 states and 223 transitions.
[2020-10-16 10:52:31,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states.
[2020-10-16 10:52:31,658 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 20
[2020-10-16 10:52:31,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:31,659 INFO L225 Difference]: With dead ends: 92
[2020-10-16 10:52:31,659 INFO L226 Difference]: Without dead ends: 87
[2020-10-16 10:52:31,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=574, Invalid=1148, Unknown=0, NotChecked=0, Total=1722
[2020-10-16 10:52:31,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states.
[2020-10-16 10:52:31,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 70.
[2020-10-16 10:52:31,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states.
[2020-10-16 10:52:31,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 177 transitions.
[2020-10-16 10:52:31,662 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 177 transitions. Word has length 20
[2020-10-16 10:52:31,662 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:31,662 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 177 transitions.
[2020-10-16 10:52:31,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 10:52:31,662 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 177 transitions.
[2020-10-16 10:52:31,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2020-10-16 10:52:31,662 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:31,663 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:31,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:31,863 INFO L429 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:31,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:31,864 INFO L82 PathProgramCache]: Analyzing trace with hash 379740647, now seen corresponding path program 94 times
[2020-10-16 10:52:31,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:31,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926405147]
[2020-10-16 10:52:31,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:31,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:32,005 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:32,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926405147]
[2020-10-16 10:52:32,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950540573]
[2020-10-16 10:52:32,006 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:32,048 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 10:52:32,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:32,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 17 conjunts are in the unsatisfiable core
[2020-10-16 10:52:32,050 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:32,068 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-10-16 10:52:32,086 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:32,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:32,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16
[2020-10-16 10:52:32,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170843704]
[2020-10-16 10:52:32,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states
[2020-10-16 10:52:32,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:32,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2020-10-16 10:52:32,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306
[2020-10-16 10:52:32,088 INFO L87 Difference]: Start difference. First operand 70 states and 177 transitions. Second operand 18 states.
[2020-10-16 10:52:32,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:32,809 INFO L93 Difference]: Finished difference Result 78 states and 197 transitions.
[2020-10-16 10:52:32,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states.
[2020-10-16 10:52:32,810 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 21
[2020-10-16 10:52:32,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:32,811 INFO L225 Difference]: With dead ends: 78
[2020-10-16 10:52:32,811 INFO L226 Difference]: Without dead ends: 73
[2020-10-16 10:52:32,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=589, Invalid=1217, Unknown=0, NotChecked=0, Total=1806
[2020-10-16 10:52:32,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states.
[2020-10-16 10:52:32,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 54.
[2020-10-16 10:52:32,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states.
[2020-10-16 10:52:32,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 132 transitions.
[2020-10-16 10:52:32,814 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 132 transitions. Word has length 21
[2020-10-16 10:52:32,814 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:32,814 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 132 transitions.
[2020-10-16 10:52:32,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states.
[2020-10-16 10:52:32,814 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 132 transitions.
[2020-10-16 10:52:32,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2020-10-16 10:52:32,815 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:32,815 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:33,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95
[2020-10-16 10:52:33,017 INFO L429 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:33,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:33,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1875703058, now seen corresponding path program 95 times
[2020-10-16 10:52:33,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:33,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595880741]
[2020-10-16 10:52:33,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:33,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:33,208 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:33,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595880741]
[2020-10-16 10:52:33,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107614543]
[2020-10-16 10:52:33,208 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:33,257 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s)
[2020-10-16 10:52:33,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:33,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 17 conjunts are in the unsatisfiable core
[2020-10-16 10:52:33,259 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:33,268 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:33,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:33,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15
[2020-10-16 10:52:33,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299412137]
[2020-10-16 10:52:33,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 10:52:33,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:33,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 10:52:33,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272
[2020-10-16 10:52:33,278 INFO L87 Difference]: Start difference. First operand 54 states and 132 transitions. Second operand 17 states.
[2020-10-16 10:52:33,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:33,589 INFO L93 Difference]: Finished difference Result 84 states and 195 transitions.
[2020-10-16 10:52:33,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2020-10-16 10:52:33,590 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 21
[2020-10-16 10:52:33,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:33,591 INFO L225 Difference]: With dead ends: 84
[2020-10-16 10:52:33,591 INFO L226 Difference]: Without dead ends: 78
[2020-10-16 10:52:33,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=283, Invalid=587, Unknown=0, NotChecked=0, Total=870
[2020-10-16 10:52:33,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states.
[2020-10-16 10:52:33,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 62.
[2020-10-16 10:52:33,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states.
[2020-10-16 10:52:33,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 151 transitions.
[2020-10-16 10:52:33,593 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 151 transitions. Word has length 21
[2020-10-16 10:52:33,594 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:33,594 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 151 transitions.
[2020-10-16 10:52:33,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 10:52:33,594 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 151 transitions.
[2020-10-16 10:52:33,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2020-10-16 10:52:33,596 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:33,596 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:33,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:33,804 INFO L429 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:33,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:33,804 INFO L82 PathProgramCache]: Analyzing trace with hash -543014794, now seen corresponding path program 96 times
[2020-10-16 10:52:33,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:33,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975675457]
[2020-10-16 10:52:33,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:33,993 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:33,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975675457]
[2020-10-16 10:52:33,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353092232]
[2020-10-16 10:52:33,994 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:34,043 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s)
[2020-10-16 10:52:34,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:34,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 17 conjunts are in the unsatisfiable core
[2020-10-16 10:52:34,045 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:34,063 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:52:34,072 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:34,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:34,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16
[2020-10-16 10:52:34,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604339374]
[2020-10-16 10:52:34,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states
[2020-10-16 10:52:34,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:34,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2020-10-16 10:52:34,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306
[2020-10-16 10:52:34,074 INFO L87 Difference]: Start difference. First operand 62 states and 151 transitions. Second operand 18 states.
[2020-10-16 10:52:34,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:34,437 INFO L93 Difference]: Finished difference Result 98 states and 223 transitions.
[2020-10-16 10:52:34,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2020-10-16 10:52:34,437 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 21
[2020-10-16 10:52:34,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:34,438 INFO L225 Difference]: With dead ends: 98
[2020-10-16 10:52:34,438 INFO L226 Difference]: Without dead ends: 92
[2020-10-16 10:52:34,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=292, Invalid=700, Unknown=0, NotChecked=0, Total=992
[2020-10-16 10:52:34,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states.
[2020-10-16 10:52:34,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 60.
[2020-10-16 10:52:34,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states.
[2020-10-16 10:52:34,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 147 transitions.
[2020-10-16 10:52:34,441 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 147 transitions. Word has length 21
[2020-10-16 10:52:34,441 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:34,441 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 147 transitions.
[2020-10-16 10:52:34,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states.
[2020-10-16 10:52:34,441 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 147 transitions.
[2020-10-16 10:52:34,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2020-10-16 10:52:34,441 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:34,442 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:34,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97
[2020-10-16 10:52:34,642 INFO L429 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:34,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:34,643 INFO L82 PathProgramCache]: Analyzing trace with hash 145306996, now seen corresponding path program 97 times
[2020-10-16 10:52:34,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:34,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865299675]
[2020-10-16 10:52:34,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:34,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:34,825 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:34,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865299675]
[2020-10-16 10:52:34,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540208302]
[2020-10-16 10:52:34,826 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:34,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:34,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 17 conjunts are in the unsatisfiable core
[2020-10-16 10:52:34,872 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:34,883 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:34,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:34,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15
[2020-10-16 10:52:34,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661743992]
[2020-10-16 10:52:34,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 10:52:34,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:34,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 10:52:34,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272
[2020-10-16 10:52:34,885 INFO L87 Difference]: Start difference. First operand 60 states and 147 transitions. Second operand 17 states.
[2020-10-16 10:52:35,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:35,344 INFO L93 Difference]: Finished difference Result 99 states and 227 transitions.
[2020-10-16 10:52:35,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2020-10-16 10:52:35,344 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 21
[2020-10-16 10:52:35,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:35,346 INFO L225 Difference]: With dead ends: 99
[2020-10-16 10:52:35,346 INFO L226 Difference]: Without dead ends: 93
[2020-10-16 10:52:35,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=298, Invalid=758, Unknown=0, NotChecked=0, Total=1056
[2020-10-16 10:52:35,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states.
[2020-10-16 10:52:35,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 63.
[2020-10-16 10:52:35,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states.
[2020-10-16 10:52:35,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 155 transitions.
[2020-10-16 10:52:35,350 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 155 transitions. Word has length 21
[2020-10-16 10:52:35,350 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:35,350 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 155 transitions.
[2020-10-16 10:52:35,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 10:52:35,351 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 155 transitions.
[2020-10-16 10:52:35,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2020-10-16 10:52:35,351 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:35,352 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:35,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:35,552 INFO L429 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:35,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:35,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1130498520, now seen corresponding path program 98 times
[2020-10-16 10:52:35,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:35,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027060519]
[2020-10-16 10:52:35,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:35,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:35,782 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:35,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027060519]
[2020-10-16 10:52:35,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477128537]
[2020-10-16 10:52:35,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:35,876 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 10:52:35,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:35,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 17 conjunts are in the unsatisfiable core
[2020-10-16 10:52:35,879 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:35,923 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:52:35,939 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:35,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:35,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16
[2020-10-16 10:52:35,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938524052]
[2020-10-16 10:52:35,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states
[2020-10-16 10:52:35,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:35,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2020-10-16 10:52:35,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306
[2020-10-16 10:52:35,942 INFO L87 Difference]: Start difference. First operand 63 states and 155 transitions. Second operand 18 states.
[2020-10-16 10:52:36,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:36,332 INFO L93 Difference]: Finished difference Result 109 states and 247 transitions.
[2020-10-16 10:52:36,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2020-10-16 10:52:36,333 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 21
[2020-10-16 10:52:36,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:36,334 INFO L225 Difference]: With dead ends: 109
[2020-10-16 10:52:36,334 INFO L226 Difference]: Without dead ends: 103
[2020-10-16 10:52:36,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=328, Invalid=862, Unknown=0, NotChecked=0, Total=1190
[2020-10-16 10:52:36,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states.
[2020-10-16 10:52:36,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 62.
[2020-10-16 10:52:36,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states.
[2020-10-16 10:52:36,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 153 transitions.
[2020-10-16 10:52:36,337 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 153 transitions. Word has length 21
[2020-10-16 10:52:36,337 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:36,338 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 153 transitions.
[2020-10-16 10:52:36,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states.
[2020-10-16 10:52:36,338 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 153 transitions.
[2020-10-16 10:52:36,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2020-10-16 10:52:36,338 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:36,338 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:36,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,96 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:36,546 INFO L429 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:36,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:36,547 INFO L82 PathProgramCache]: Analyzing trace with hash -486660522, now seen corresponding path program 99 times
[2020-10-16 10:52:36,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:36,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735029057]
[2020-10-16 10:52:36,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:36,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:36,696 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:36,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735029057]
[2020-10-16 10:52:36,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013759139]
[2020-10-16 10:52:36,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:36,780 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s)
[2020-10-16 10:52:36,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:36,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 17 conjunts are in the unsatisfiable core
[2020-10-16 10:52:36,783 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:36,820 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:36,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:36,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15
[2020-10-16 10:52:36,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212874280]
[2020-10-16 10:52:36,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 10:52:36,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:36,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 10:52:36,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272
[2020-10-16 10:52:36,822 INFO L87 Difference]: Start difference. First operand 62 states and 153 transitions. Second operand 17 states.
[2020-10-16 10:52:37,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:37,263 INFO L93 Difference]: Finished difference Result 109 states and 249 transitions.
[2020-10-16 10:52:37,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states.
[2020-10-16 10:52:37,264 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 21
[2020-10-16 10:52:37,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:37,265 INFO L225 Difference]: With dead ends: 109
[2020-10-16 10:52:37,265 INFO L226 Difference]: Without dead ends: 103
[2020-10-16 10:52:37,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=348, Invalid=912, Unknown=0, NotChecked=0, Total=1260
[2020-10-16 10:52:37,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states.
[2020-10-16 10:52:37,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 65.
[2020-10-16 10:52:37,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states.
[2020-10-16 10:52:37,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 161 transitions.
[2020-10-16 10:52:37,269 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 161 transitions. Word has length 21
[2020-10-16 10:52:37,269 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:37,269 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 161 transitions.
[2020-10-16 10:52:37,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 10:52:37,270 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 161 transitions.
[2020-10-16 10:52:37,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2020-10-16 10:52:37,272 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:37,272 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:37,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100
[2020-10-16 10:52:37,473 INFO L429 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:37,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:37,474 INFO L82 PathProgramCache]: Analyzing trace with hash 770229178, now seen corresponding path program 100 times
[2020-10-16 10:52:37,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:37,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624120146]
[2020-10-16 10:52:37,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:37,653 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:37,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624120146]
[2020-10-16 10:52:37,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864892877]
[2020-10-16 10:52:37,654 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:37,698 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 10:52:37,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:37,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 17 conjunts are in the unsatisfiable core
[2020-10-16 10:52:37,700 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:37,728 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:52:37,739 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:37,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:37,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16
[2020-10-16 10:52:37,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026807682]
[2020-10-16 10:52:37,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states
[2020-10-16 10:52:37,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:37,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2020-10-16 10:52:37,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306
[2020-10-16 10:52:37,741 INFO L87 Difference]: Start difference. First operand 65 states and 161 transitions. Second operand 18 states.
[2020-10-16 10:52:38,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:38,273 INFO L93 Difference]: Finished difference Result 106 states and 243 transitions.
[2020-10-16 10:52:38,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states.
[2020-10-16 10:52:38,274 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 21
[2020-10-16 10:52:38,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:38,275 INFO L225 Difference]: With dead ends: 106
[2020-10-16 10:52:38,275 INFO L226 Difference]: Without dead ends: 100
[2020-10-16 10:52:38,276 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=355, Invalid=977, Unknown=0, NotChecked=0, Total=1332
[2020-10-16 10:52:38,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states.
[2020-10-16 10:52:38,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 64.
[2020-10-16 10:52:38,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states.
[2020-10-16 10:52:38,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 159 transitions.
[2020-10-16 10:52:38,278 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 159 transitions. Word has length 21
[2020-10-16 10:52:38,278 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:38,278 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 159 transitions.
[2020-10-16 10:52:38,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states.
[2020-10-16 10:52:38,278 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 159 transitions.
[2020-10-16 10:52:38,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2020-10-16 10:52:38,279 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:38,279 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:38,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101
[2020-10-16 10:52:38,479 INFO L429 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:38,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:38,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1908545608, now seen corresponding path program 101 times
[2020-10-16 10:52:38,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:38,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567487789]
[2020-10-16 10:52:38,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:38,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:38,631 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:38,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567487789]
[2020-10-16 10:52:38,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210831662]
[2020-10-16 10:52:38,631 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:38,680 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s)
[2020-10-16 10:52:38,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:38,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 17 conjunts are in the unsatisfiable core
[2020-10-16 10:52:38,682 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:38,700 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:38,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:38,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15
[2020-10-16 10:52:38,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942108410]
[2020-10-16 10:52:38,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 10:52:38,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:38,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 10:52:38,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272
[2020-10-16 10:52:38,702 INFO L87 Difference]: Start difference. First operand 64 states and 159 transitions. Second operand 17 states.
[2020-10-16 10:52:39,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:39,195 INFO L93 Difference]: Finished difference Result 107 states and 247 transitions.
[2020-10-16 10:52:39,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states.
[2020-10-16 10:52:39,196 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 21
[2020-10-16 10:52:39,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:39,197 INFO L225 Difference]: With dead ends: 107
[2020-10-16 10:52:39,197 INFO L226 Difference]: Without dead ends: 101
[2020-10-16 10:52:39,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=390, Invalid=1016, Unknown=0, NotChecked=0, Total=1406
[2020-10-16 10:52:39,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states.
[2020-10-16 10:52:39,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 67.
[2020-10-16 10:52:39,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states.
[2020-10-16 10:52:39,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 167 transitions.
[2020-10-16 10:52:39,200 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 167 transitions. Word has length 21
[2020-10-16 10:52:39,200 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:39,200 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 167 transitions.
[2020-10-16 10:52:39,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 10:52:39,200 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 167 transitions.
[2020-10-16 10:52:39,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2020-10-16 10:52:39,201 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:39,201 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:39,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:39,411 INFO L429 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:39,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:39,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1388802532, now seen corresponding path program 102 times
[2020-10-16 10:52:39,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:39,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805500515]
[2020-10-16 10:52:39,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:39,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:39,568 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:39,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805500515]
[2020-10-16 10:52:39,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159715286]
[2020-10-16 10:52:39,569 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:39,614 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s)
[2020-10-16 10:52:39,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:39,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 17 conjunts are in the unsatisfiable core
[2020-10-16 10:52:39,616 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:39,635 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:52:39,648 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:39,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:39,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16
[2020-10-16 10:52:39,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474648010]
[2020-10-16 10:52:39,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states
[2020-10-16 10:52:39,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:39,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2020-10-16 10:52:39,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306
[2020-10-16 10:52:39,650 INFO L87 Difference]: Start difference. First operand 67 states and 167 transitions. Second operand 18 states.
[2020-10-16 10:52:40,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:40,244 INFO L93 Difference]: Finished difference Result 104 states and 241 transitions.
[2020-10-16 10:52:40,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states.
[2020-10-16 10:52:40,245 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 21
[2020-10-16 10:52:40,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:40,246 INFO L225 Difference]: With dead ends: 104
[2020-10-16 10:52:40,246 INFO L226 Difference]: Without dead ends: 98
[2020-10-16 10:52:40,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=398, Invalid=1084, Unknown=0, NotChecked=0, Total=1482
[2020-10-16 10:52:40,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states.
[2020-10-16 10:52:40,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 66.
[2020-10-16 10:52:40,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states.
[2020-10-16 10:52:40,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 165 transitions.
[2020-10-16 10:52:40,249 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 165 transitions. Word has length 21
[2020-10-16 10:52:40,249 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:40,250 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 165 transitions.
[2020-10-16 10:52:40,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states.
[2020-10-16 10:52:40,250 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 165 transitions.
[2020-10-16 10:52:40,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2020-10-16 10:52:40,250 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:40,250 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:40,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103
[2020-10-16 10:52:40,459 INFO L429 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:40,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:40,459 INFO L82 PathProgramCache]: Analyzing trace with hash 266508698, now seen corresponding path program 103 times
[2020-10-16 10:52:40,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:40,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134278004]
[2020-10-16 10:52:40,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:40,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:40,609 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:40,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134278004]
[2020-10-16 10:52:40,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669310570]
[2020-10-16 10:52:40,610 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:40,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:40,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 17 conjunts are in the unsatisfiable core
[2020-10-16 10:52:40,661 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:40,677 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:40,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:40,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15
[2020-10-16 10:52:40,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120318957]
[2020-10-16 10:52:40,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 10:52:40,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:40,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 10:52:40,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272
[2020-10-16 10:52:40,679 INFO L87 Difference]: Start difference. First operand 66 states and 165 transitions. Second operand 17 states.
[2020-10-16 10:52:41,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:41,225 INFO L93 Difference]: Finished difference Result 105 states and 245 transitions.
[2020-10-16 10:52:41,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states.
[2020-10-16 10:52:41,226 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 21
[2020-10-16 10:52:41,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:41,227 INFO L225 Difference]: With dead ends: 105
[2020-10-16 10:52:41,227 INFO L226 Difference]: Without dead ends: 99
[2020-10-16 10:52:41,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=448, Invalid=1112, Unknown=0, NotChecked=0, Total=1560
[2020-10-16 10:52:41,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states.
[2020-10-16 10:52:41,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 69.
[2020-10-16 10:52:41,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states.
[2020-10-16 10:52:41,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 173 transitions.
[2020-10-16 10:52:41,230 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 173 transitions. Word has length 21
[2020-10-16 10:52:41,231 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:41,231 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 173 transitions.
[2020-10-16 10:52:41,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 10:52:41,231 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 173 transitions.
[2020-10-16 10:52:41,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2020-10-16 10:52:41,231 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:41,231 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:41,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,101 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:41,436 INFO L429 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:41,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:41,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1453618946, now seen corresponding path program 104 times
[2020-10-16 10:52:41,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:41,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228240093]
[2020-10-16 10:52:41,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:41,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:41,589 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:41,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228240093]
[2020-10-16 10:52:41,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639969697]
[2020-10-16 10:52:41,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:41,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 10:52:41,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:41,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 17 conjunts are in the unsatisfiable core
[2020-10-16 10:52:41,636 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:41,656 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:52:41,671 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:41,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:41,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16
[2020-10-16 10:52:41,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139202464]
[2020-10-16 10:52:41,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states
[2020-10-16 10:52:41,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:41,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2020-10-16 10:52:41,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306
[2020-10-16 10:52:41,673 INFO L87 Difference]: Start difference. First operand 69 states and 173 transitions. Second operand 18 states.
[2020-10-16 10:52:42,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:42,344 INFO L93 Difference]: Finished difference Result 102 states and 239 transitions.
[2020-10-16 10:52:42,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2020-10-16 10:52:42,345 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 21
[2020-10-16 10:52:42,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:42,346 INFO L225 Difference]: With dead ends: 102
[2020-10-16 10:52:42,346 INFO L226 Difference]: Without dead ends: 96
[2020-10-16 10:52:42,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=457, Invalid=1183, Unknown=0, NotChecked=0, Total=1640
[2020-10-16 10:52:42,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states.
[2020-10-16 10:52:42,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 68.
[2020-10-16 10:52:42,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states.
[2020-10-16 10:52:42,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 171 transitions.
[2020-10-16 10:52:42,349 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 171 transitions. Word has length 21
[2020-10-16 10:52:42,349 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:42,349 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 171 transitions.
[2020-10-16 10:52:42,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states.
[2020-10-16 10:52:42,349 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 171 transitions.
[2020-10-16 10:52:42,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2020-10-16 10:52:42,350 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:42,350 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:42,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105
[2020-10-16 10:52:42,552 INFO L429 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:42,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:42,552 INFO L82 PathProgramCache]: Analyzing trace with hash -982623236, now seen corresponding path program 105 times
[2020-10-16 10:52:42,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:42,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177667038]
[2020-10-16 10:52:42,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:42,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:42,698 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:42,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177667038]
[2020-10-16 10:52:42,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384513617]
[2020-10-16 10:52:42,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:42,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s)
[2020-10-16 10:52:42,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:42,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 17 conjunts are in the unsatisfiable core
[2020-10-16 10:52:42,746 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:42,762 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:42,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:42,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15
[2020-10-16 10:52:42,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42898514]
[2020-10-16 10:52:42,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 10:52:42,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:42,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 10:52:42,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272
[2020-10-16 10:52:42,763 INFO L87 Difference]: Start difference. First operand 68 states and 171 transitions. Second operand 17 states.
[2020-10-16 10:52:43,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:43,355 INFO L93 Difference]: Finished difference Result 103 states and 243 transitions.
[2020-10-16 10:52:43,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states.
[2020-10-16 10:52:43,356 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 21
[2020-10-16 10:52:43,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:43,357 INFO L225 Difference]: With dead ends: 103
[2020-10-16 10:52:43,357 INFO L226 Difference]: Without dead ends: 97
[2020-10-16 10:52:43,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=522, Invalid=1200, Unknown=0, NotChecked=0, Total=1722
[2020-10-16 10:52:43,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states.
[2020-10-16 10:52:43,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 71.
[2020-10-16 10:52:43,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states.
[2020-10-16 10:52:43,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 179 transitions.
[2020-10-16 10:52:43,359 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 179 transitions. Word has length 21
[2020-10-16 10:52:43,359 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:43,359 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 179 transitions.
[2020-10-16 10:52:43,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 10:52:43,360 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 179 transitions.
[2020-10-16 10:52:43,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2020-10-16 10:52:43,360 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:43,360 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:43,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:43,561 INFO L429 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:43,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:43,561 INFO L82 PathProgramCache]: Analyzing trace with hash -966536096, now seen corresponding path program 106 times
[2020-10-16 10:52:43,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:43,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385303265]
[2020-10-16 10:52:43,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:43,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:43,706 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:43,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385303265]
[2020-10-16 10:52:43,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050605209]
[2020-10-16 10:52:43,707 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:43,751 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 10:52:43,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:43,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 17 conjunts are in the unsatisfiable core
[2020-10-16 10:52:43,753 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:43,771 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:52:43,784 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:43,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:43,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16
[2020-10-16 10:52:43,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006901855]
[2020-10-16 10:52:43,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states
[2020-10-16 10:52:43,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:43,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2020-10-16 10:52:43,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306
[2020-10-16 10:52:43,786 INFO L87 Difference]: Start difference. First operand 71 states and 179 transitions. Second operand 18 states.
[2020-10-16 10:52:44,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:44,530 INFO L93 Difference]: Finished difference Result 100 states and 237 transitions.
[2020-10-16 10:52:44,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states.
[2020-10-16 10:52:44,531 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 21
[2020-10-16 10:52:44,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:44,531 INFO L225 Difference]: With dead ends: 100
[2020-10-16 10:52:44,531 INFO L226 Difference]: Without dead ends: 94
[2020-10-16 10:52:44,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=532, Invalid=1274, Unknown=0, NotChecked=0, Total=1806
[2020-10-16 10:52:44,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states.
[2020-10-16 10:52:44,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 70.
[2020-10-16 10:52:44,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states.
[2020-10-16 10:52:44,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 177 transitions.
[2020-10-16 10:52:44,534 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 177 transitions. Word has length 21
[2020-10-16 10:52:44,534 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:44,535 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 177 transitions.
[2020-10-16 10:52:44,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states.
[2020-10-16 10:52:44,535 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 177 transitions.
[2020-10-16 10:52:44,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2020-10-16 10:52:44,535 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:44,535 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:44,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107
[2020-10-16 10:52:44,740 INFO L429 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:44,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:44,740 INFO L82 PathProgramCache]: Analyzing trace with hash -966045986, now seen corresponding path program 107 times
[2020-10-16 10:52:44,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:44,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251284649]
[2020-10-16 10:52:44,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:44,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:44,882 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:44,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251284649]
[2020-10-16 10:52:44,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175491613]
[2020-10-16 10:52:44,883 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:44,931 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s)
[2020-10-16 10:52:44,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:44,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 17 conjunts are in the unsatisfiable core
[2020-10-16 10:52:44,933 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:44,958 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:44,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:44,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15
[2020-10-16 10:52:44,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988482365]
[2020-10-16 10:52:44,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 10:52:44,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:44,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 10:52:44,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272
[2020-10-16 10:52:44,960 INFO L87 Difference]: Start difference. First operand 70 states and 177 transitions. Second operand 17 states.
[2020-10-16 10:52:45,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:45,717 INFO L93 Difference]: Finished difference Result 120 states and 287 transitions.
[2020-10-16 10:52:45,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states.
[2020-10-16 10:52:45,718 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 21
[2020-10-16 10:52:45,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:45,719 INFO L225 Difference]: With dead ends: 120
[2020-10-16 10:52:45,719 INFO L226 Difference]: Without dead ends: 114
[2020-10-16 10:52:45,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=612, Invalid=1280, Unknown=0, NotChecked=0, Total=1892
[2020-10-16 10:52:45,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states.
[2020-10-16 10:52:45,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 76.
[2020-10-16 10:52:45,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states.
[2020-10-16 10:52:45,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 197 transitions.
[2020-10-16 10:52:45,722 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 197 transitions. Word has length 21
[2020-10-16 10:52:45,723 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:45,723 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 197 transitions.
[2020-10-16 10:52:45,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 10:52:45,723 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 197 transitions.
[2020-10-16 10:52:45,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2020-10-16 10:52:45,724 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:45,724 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:45,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108
[2020-10-16 10:52:45,934 INFO L429 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:45,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:45,935 INFO L82 PathProgramCache]: Analyzing trace with hash -966029246, now seen corresponding path program 108 times
[2020-10-16 10:52:45,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:45,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649875709]
[2020-10-16 10:52:45,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:45,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:46,116 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:46,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649875709]
[2020-10-16 10:52:46,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607429071]
[2020-10-16 10:52:46,117 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:46,171 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s)
[2020-10-16 10:52:46,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:46,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 17 conjunts are in the unsatisfiable core
[2020-10-16 10:52:46,173 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:46,194 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:52:46,207 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:46,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:46,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16
[2020-10-16 10:52:46,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130806026]
[2020-10-16 10:52:46,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states
[2020-10-16 10:52:46,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:46,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2020-10-16 10:52:46,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306
[2020-10-16 10:52:46,209 INFO L87 Difference]: Start difference. First operand 76 states and 197 transitions. Second operand 18 states.
[2020-10-16 10:52:46,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:46,993 INFO L93 Difference]: Finished difference Result 101 states and 243 transitions.
[2020-10-16 10:52:46,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states.
[2020-10-16 10:52:46,994 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 21
[2020-10-16 10:52:46,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:46,995 INFO L225 Difference]: With dead ends: 101
[2020-10-16 10:52:46,995 INFO L226 Difference]: Without dead ends: 93
[2020-10-16 10:52:46,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=623, Invalid=1357, Unknown=0, NotChecked=0, Total=1980
[2020-10-16 10:52:46,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states.
[2020-10-16 10:52:46,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 73.
[2020-10-16 10:52:46,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states.
[2020-10-16 10:52:46,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 185 transitions.
[2020-10-16 10:52:46,997 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 185 transitions. Word has length 21
[2020-10-16 10:52:46,997 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:46,997 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 185 transitions.
[2020-10-16 10:52:46,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states.
[2020-10-16 10:52:46,997 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 185 transitions.
[2020-10-16 10:52:46,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2020-10-16 10:52:46,998 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:46,998 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:47,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,106 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:47,206 INFO L429 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:47,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:47,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1728807741, now seen corresponding path program 109 times
[2020-10-16 10:52:47,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:47,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255626519]
[2020-10-16 10:52:47,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:47,418 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:47,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255626519]
[2020-10-16 10:52:47,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206931469]
[2020-10-16 10:52:47,419 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:47,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:47,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core
[2020-10-16 10:52:47,465 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:47,475 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:47,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:47,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16
[2020-10-16 10:52:47,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93053416]
[2020-10-16 10:52:47,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states
[2020-10-16 10:52:47,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:47,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2020-10-16 10:52:47,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306
[2020-10-16 10:52:47,476 INFO L87 Difference]: Start difference. First operand 73 states and 185 transitions. Second operand 18 states.
[2020-10-16 10:52:47,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:47,860 INFO L93 Difference]: Finished difference Result 114 states and 267 transitions.
[2020-10-16 10:52:47,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states.
[2020-10-16 10:52:47,861 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 22
[2020-10-16 10:52:47,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:47,862 INFO L225 Difference]: With dead ends: 114
[2020-10-16 10:52:47,862 INFO L226 Difference]: Without dead ends: 108
[2020-10-16 10:52:47,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=321, Invalid=735, Unknown=0, NotChecked=0, Total=1056
[2020-10-16 10:52:47,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states.
[2020-10-16 10:52:47,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 75.
[2020-10-16 10:52:47,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states.
[2020-10-16 10:52:47,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 189 transitions.
[2020-10-16 10:52:47,865 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 189 transitions. Word has length 22
[2020-10-16 10:52:47,865 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:47,865 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 189 transitions.
[2020-10-16 10:52:47,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states.
[2020-10-16 10:52:47,865 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 189 transitions.
[2020-10-16 10:52:47,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2020-10-16 10:52:47,866 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:47,866 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:48,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:48,070 INFO L429 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:48,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:48,070 INFO L82 PathProgramCache]: Analyzing trace with hash -689910111, now seen corresponding path program 110 times
[2020-10-16 10:52:48,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:48,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235901815]
[2020-10-16 10:52:48,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:48,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:48,284 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:48,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235901815]
[2020-10-16 10:52:48,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502215284]
[2020-10-16 10:52:48,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:48,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 10:52:48,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:48,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core
[2020-10-16 10:52:48,331 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:48,356 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:52:48,367 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:48,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:48,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17
[2020-10-16 10:52:48,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725090170]
[2020-10-16 10:52:48,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states
[2020-10-16 10:52:48,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:48,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2020-10-16 10:52:48,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342
[2020-10-16 10:52:48,368 INFO L87 Difference]: Start difference. First operand 75 states and 189 transitions. Second operand 19 states.
[2020-10-16 10:52:48,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:48,828 INFO L93 Difference]: Finished difference Result 111 states and 261 transitions.
[2020-10-16 10:52:48,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2020-10-16 10:52:48,829 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 22
[2020-10-16 10:52:48,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:48,829 INFO L225 Difference]: With dead ends: 111
[2020-10-16 10:52:48,829 INFO L226 Difference]: Without dead ends: 105
[2020-10-16 10:52:48,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=362, Invalid=898, Unknown=0, NotChecked=0, Total=1260
[2020-10-16 10:52:48,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states.
[2020-10-16 10:52:48,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 74.
[2020-10-16 10:52:48,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states.
[2020-10-16 10:52:48,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 187 transitions.
[2020-10-16 10:52:48,833 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 187 transitions. Word has length 22
[2020-10-16 10:52:48,833 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:48,833 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 187 transitions.
[2020-10-16 10:52:48,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states.
[2020-10-16 10:52:48,833 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 187 transitions.
[2020-10-16 10:52:48,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2020-10-16 10:52:48,833 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:48,834 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:49,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111
[2020-10-16 10:52:49,034 INFO L429 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:49,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:49,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1588321, now seen corresponding path program 111 times
[2020-10-16 10:52:49,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:49,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060210239]
[2020-10-16 10:52:49,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:49,230 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:49,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060210239]
[2020-10-16 10:52:49,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683833908]
[2020-10-16 10:52:49,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:49,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s)
[2020-10-16 10:52:49,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:49,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core
[2020-10-16 10:52:49,280 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:49,292 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:49,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:49,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16
[2020-10-16 10:52:49,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853210287]
[2020-10-16 10:52:49,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states
[2020-10-16 10:52:49,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:49,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2020-10-16 10:52:49,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306
[2020-10-16 10:52:49,294 INFO L87 Difference]: Start difference. First operand 74 states and 187 transitions. Second operand 18 states.
[2020-10-16 10:52:49,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:49,715 INFO L93 Difference]: Finished difference Result 108 states and 255 transitions.
[2020-10-16 10:52:49,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2020-10-16 10:52:49,715 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 22
[2020-10-16 10:52:49,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:49,716 INFO L225 Difference]: With dead ends: 108
[2020-10-16 10:52:49,716 INFO L226 Difference]: Without dead ends: 102
[2020-10-16 10:52:49,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=332, Invalid=858, Unknown=0, NotChecked=0, Total=1190
[2020-10-16 10:52:49,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states.
[2020-10-16 10:52:49,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 75.
[2020-10-16 10:52:49,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states.
[2020-10-16 10:52:49,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 189 transitions.
[2020-10-16 10:52:49,719 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 189 transitions. Word has length 22
[2020-10-16 10:52:49,719 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:49,719 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 189 transitions.
[2020-10-16 10:52:49,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states.
[2020-10-16 10:52:49,719 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 189 transitions.
[2020-10-16 10:52:49,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2020-10-16 10:52:49,720 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:49,720 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:49,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112,109 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:49,925 INFO L429 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:49,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:49,925 INFO L82 PathProgramCache]: Analyzing trace with hash 983603203, now seen corresponding path program 112 times
[2020-10-16 10:52:49,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:49,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137121608]
[2020-10-16 10:52:49,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:49,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:50,128 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:50,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137121608]
[2020-10-16 10:52:50,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111481722]
[2020-10-16 10:52:50,129 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:50,178 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 10:52:50,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:50,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core
[2020-10-16 10:52:50,179 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:50,199 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:52:50,217 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:50,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:50,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17
[2020-10-16 10:52:50,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449601113]
[2020-10-16 10:52:50,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states
[2020-10-16 10:52:50,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:50,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2020-10-16 10:52:50,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342
[2020-10-16 10:52:50,218 INFO L87 Difference]: Start difference. First operand 75 states and 189 transitions. Second operand 19 states.
[2020-10-16 10:52:50,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:50,757 INFO L93 Difference]: Finished difference Result 107 states and 253 transitions.
[2020-10-16 10:52:50,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states.
[2020-10-16 10:52:50,758 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 22
[2020-10-16 10:52:50,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:50,758 INFO L225 Difference]: With dead ends: 107
[2020-10-16 10:52:50,759 INFO L226 Difference]: Without dead ends: 101
[2020-10-16 10:52:50,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=380, Invalid=1026, Unknown=0, NotChecked=0, Total=1406
[2020-10-16 10:52:50,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states.
[2020-10-16 10:52:50,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 74.
[2020-10-16 10:52:50,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states.
[2020-10-16 10:52:50,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 187 transitions.
[2020-10-16 10:52:50,761 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 187 transitions. Word has length 22
[2020-10-16 10:52:50,761 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:50,762 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 187 transitions.
[2020-10-16 10:52:50,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states.
[2020-10-16 10:52:50,762 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 187 transitions.
[2020-10-16 10:52:50,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2020-10-16 10:52:50,762 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:50,762 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:50,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113
[2020-10-16 10:52:50,963 INFO L429 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:50,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:50,964 INFO L82 PathProgramCache]: Analyzing trace with hash -633555839, now seen corresponding path program 113 times
[2020-10-16 10:52:50,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:50,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943178406]
[2020-10-16 10:52:50,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:51,150 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:51,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943178406]
[2020-10-16 10:52:51,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322836969]
[2020-10-16 10:52:51,151 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:51,198 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s)
[2020-10-16 10:52:51,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:51,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core
[2020-10-16 10:52:51,201 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:51,214 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:51,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:51,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16
[2020-10-16 10:52:51,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574037691]
[2020-10-16 10:52:51,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states
[2020-10-16 10:52:51,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:51,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2020-10-16 10:52:51,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306
[2020-10-16 10:52:51,215 INFO L87 Difference]: Start difference. First operand 74 states and 187 transitions. Second operand 18 states.
[2020-10-16 10:52:51,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:51,700 INFO L93 Difference]: Finished difference Result 104 states and 247 transitions.
[2020-10-16 10:52:51,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states.
[2020-10-16 10:52:51,701 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 22
[2020-10-16 10:52:51,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:51,701 INFO L225 Difference]: With dead ends: 104
[2020-10-16 10:52:51,702 INFO L226 Difference]: Without dead ends: 98
[2020-10-16 10:52:51,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=359, Invalid=973, Unknown=0, NotChecked=0, Total=1332
[2020-10-16 10:52:51,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states.
[2020-10-16 10:52:51,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 75.
[2020-10-16 10:52:51,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states.
[2020-10-16 10:52:51,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 189 transitions.
[2020-10-16 10:52:51,704 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 189 transitions. Word has length 22
[2020-10-16 10:52:51,704 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:51,704 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 189 transitions.
[2020-10-16 10:52:51,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states.
[2020-10-16 10:52:51,705 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 189 transitions.
[2020-10-16 10:52:51,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2020-10-16 10:52:51,705 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:51,705 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:51,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114
[2020-10-16 10:52:51,912 INFO L429 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:51,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:51,912 INFO L82 PathProgramCache]: Analyzing trace with hash 623333861, now seen corresponding path program 114 times
[2020-10-16 10:52:51,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:51,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489895854]
[2020-10-16 10:52:51,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:51,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:52,101 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:52,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489895854]
[2020-10-16 10:52:52,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301370226]
[2020-10-16 10:52:52,102 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:52,148 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s)
[2020-10-16 10:52:52,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:52,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core
[2020-10-16 10:52:52,150 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:52,174 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:52:52,187 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:52,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:52,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17
[2020-10-16 10:52:52,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922568670]
[2020-10-16 10:52:52,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states
[2020-10-16 10:52:52,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:52,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2020-10-16 10:52:52,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342
[2020-10-16 10:52:52,189 INFO L87 Difference]: Start difference. First operand 75 states and 189 transitions. Second operand 19 states.
[2020-10-16 10:52:52,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:52,796 INFO L93 Difference]: Finished difference Result 103 states and 245 transitions.
[2020-10-16 10:52:52,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states.
[2020-10-16 10:52:52,797 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 22
[2020-10-16 10:52:52,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:52,798 INFO L225 Difference]: With dead ends: 103
[2020-10-16 10:52:52,798 INFO L226 Difference]: Without dead ends: 97
[2020-10-16 10:52:52,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=414, Invalid=1146, Unknown=0, NotChecked=0, Total=1560
[2020-10-16 10:52:52,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states.
[2020-10-16 10:52:52,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 74.
[2020-10-16 10:52:52,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states.
[2020-10-16 10:52:52,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 187 transitions.
[2020-10-16 10:52:52,801 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 187 transitions. Word has length 22
[2020-10-16 10:52:52,801 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:52,802 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 187 transitions.
[2020-10-16 10:52:52,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states.
[2020-10-16 10:52:52,802 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 187 transitions.
[2020-10-16 10:52:52,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2020-10-16 10:52:52,802 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:52,802 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:53,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115
[2020-10-16 10:52:53,011 INFO L429 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:53,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:53,011 INFO L82 PathProgramCache]: Analyzing trace with hash -2055440925, now seen corresponding path program 115 times
[2020-10-16 10:52:53,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:53,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032841251]
[2020-10-16 10:52:53,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:53,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:53,188 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:53,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032841251]
[2020-10-16 10:52:53,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49233012]
[2020-10-16 10:52:53,189 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:53,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:53,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core
[2020-10-16 10:52:53,235 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:53,252 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:53,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:53,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16
[2020-10-16 10:52:53,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198892500]
[2020-10-16 10:52:53,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states
[2020-10-16 10:52:53,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:53,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2020-10-16 10:52:53,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306
[2020-10-16 10:52:53,254 INFO L87 Difference]: Start difference. First operand 74 states and 187 transitions. Second operand 18 states.
[2020-10-16 10:52:53,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:53,802 INFO L93 Difference]: Finished difference Result 100 states and 239 transitions.
[2020-10-16 10:52:53,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states.
[2020-10-16 10:52:53,803 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 22
[2020-10-16 10:52:53,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:53,804 INFO L225 Difference]: With dead ends: 100
[2020-10-16 10:52:53,804 INFO L226 Difference]: Without dead ends: 94
[2020-10-16 10:52:53,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=402, Invalid=1080, Unknown=0, NotChecked=0, Total=1482
[2020-10-16 10:52:53,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states.
[2020-10-16 10:52:53,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 75.
[2020-10-16 10:52:53,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states.
[2020-10-16 10:52:53,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 189 transitions.
[2020-10-16 10:52:53,807 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 189 transitions. Word has length 22
[2020-10-16 10:52:53,807 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:53,807 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 189 transitions.
[2020-10-16 10:52:53,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states.
[2020-10-16 10:52:53,807 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 189 transitions.
[2020-10-16 10:52:53,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2020-10-16 10:52:53,808 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:53,808 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:54,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,113 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:54,016 INFO L429 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:54,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:54,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1535697849, now seen corresponding path program 116 times
[2020-10-16 10:52:54,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:54,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128239735]
[2020-10-16 10:52:54,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:54,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:54,192 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:54,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128239735]
[2020-10-16 10:52:54,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227530717]
[2020-10-16 10:52:54,193 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:54,237 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 10:52:54,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:54,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core
[2020-10-16 10:52:54,240 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:54,261 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:52:54,274 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:54,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:54,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17
[2020-10-16 10:52:54,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677713293]
[2020-10-16 10:52:54,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states
[2020-10-16 10:52:54,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:54,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2020-10-16 10:52:54,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342
[2020-10-16 10:52:54,276 INFO L87 Difference]: Start difference. First operand 75 states and 189 transitions. Second operand 19 states.
[2020-10-16 10:52:54,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:54,986 INFO L93 Difference]: Finished difference Result 99 states and 237 transitions.
[2020-10-16 10:52:54,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2020-10-16 10:52:54,987 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 22
[2020-10-16 10:52:54,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:54,988 INFO L225 Difference]: With dead ends: 99
[2020-10-16 10:52:54,988 INFO L226 Difference]: Without dead ends: 93
[2020-10-16 10:52:54,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=464, Invalid=1258, Unknown=0, NotChecked=0, Total=1722
[2020-10-16 10:52:54,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states.
[2020-10-16 10:52:54,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 74.
[2020-10-16 10:52:54,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states.
[2020-10-16 10:52:54,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 187 transitions.
[2020-10-16 10:52:54,990 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 187 transitions. Word has length 22
[2020-10-16 10:52:54,990 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:54,990 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 187 transitions.
[2020-10-16 10:52:54,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states.
[2020-10-16 10:52:54,990 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 187 transitions.
[2020-10-16 10:52:54,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2020-10-16 10:52:54,991 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:54,991 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:55,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117
[2020-10-16 10:52:55,201 INFO L429 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:55,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:55,201 INFO L82 PathProgramCache]: Analyzing trace with hash 119613381, now seen corresponding path program 117 times
[2020-10-16 10:52:55,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:55,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41480907]
[2020-10-16 10:52:55,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:55,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:55,377 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:55,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41480907]
[2020-10-16 10:52:55,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662766244]
[2020-10-16 10:52:55,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:55,427 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s)
[2020-10-16 10:52:55,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:55,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core
[2020-10-16 10:52:55,429 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:55,446 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:55,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:55,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16
[2020-10-16 10:52:55,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775339310]
[2020-10-16 10:52:55,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states
[2020-10-16 10:52:55,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:55,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2020-10-16 10:52:55,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306
[2020-10-16 10:52:55,447 INFO L87 Difference]: Start difference. First operand 74 states and 187 transitions. Second operand 18 states.
[2020-10-16 10:52:56,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:56,048 INFO L93 Difference]: Finished difference Result 96 states and 231 transitions.
[2020-10-16 10:52:56,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states.
[2020-10-16 10:52:56,049 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 22
[2020-10-16 10:52:56,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:56,050 INFO L225 Difference]: With dead ends: 96
[2020-10-16 10:52:56,050 INFO L226 Difference]: Without dead ends: 90
[2020-10-16 10:52:56,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=461, Invalid=1179, Unknown=0, NotChecked=0, Total=1640
[2020-10-16 10:52:56,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states.
[2020-10-16 10:52:56,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 75.
[2020-10-16 10:52:56,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states.
[2020-10-16 10:52:56,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 189 transitions.
[2020-10-16 10:52:56,053 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 189 transitions. Word has length 22
[2020-10-16 10:52:56,053 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:56,053 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 189 transitions.
[2020-10-16 10:52:56,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states.
[2020-10-16 10:52:56,053 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 189 transitions.
[2020-10-16 10:52:56,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2020-10-16 10:52:56,053 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:56,054 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:56,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:56,260 INFO L429 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:56,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:56,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1600514263, now seen corresponding path program 118 times
[2020-10-16 10:52:56,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:56,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942227633]
[2020-10-16 10:52:56,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:56,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:56,424 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:56,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942227633]
[2020-10-16 10:52:56,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903747764]
[2020-10-16 10:52:56,425 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:56,477 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 10:52:56,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:56,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core
[2020-10-16 10:52:56,478 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:56,499 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:52:56,512 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:56,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:56,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17
[2020-10-16 10:52:56,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821025990]
[2020-10-16 10:52:56,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states
[2020-10-16 10:52:56,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:56,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2020-10-16 10:52:56,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342
[2020-10-16 10:52:56,514 INFO L87 Difference]: Start difference. First operand 75 states and 189 transitions. Second operand 19 states.
[2020-10-16 10:52:57,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:57,308 INFO L93 Difference]: Finished difference Result 95 states and 229 transitions.
[2020-10-16 10:52:57,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states.
[2020-10-16 10:52:57,309 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 22
[2020-10-16 10:52:57,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:57,310 INFO L225 Difference]: With dead ends: 95
[2020-10-16 10:52:57,310 INFO L226 Difference]: Without dead ends: 89
[2020-10-16 10:52:57,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=530, Invalid=1362, Unknown=0, NotChecked=0, Total=1892
[2020-10-16 10:52:57,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states.
[2020-10-16 10:52:57,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 74.
[2020-10-16 10:52:57,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states.
[2020-10-16 10:52:57,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 187 transitions.
[2020-10-16 10:52:57,313 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 187 transitions. Word has length 22
[2020-10-16 10:52:57,313 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:57,313 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 187 transitions.
[2020-10-16 10:52:57,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states.
[2020-10-16 10:52:57,314 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 187 transitions.
[2020-10-16 10:52:57,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2020-10-16 10:52:57,314 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:57,314 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:57,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,116 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:57,522 INFO L429 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:57,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:57,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1129518553, now seen corresponding path program 119 times
[2020-10-16 10:52:57,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:57,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521010157]
[2020-10-16 10:52:57,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:57,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:57,694 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:57,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521010157]
[2020-10-16 10:52:57,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112301522]
[2020-10-16 10:52:57,695 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:57,748 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s)
[2020-10-16 10:52:57,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:57,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core
[2020-10-16 10:52:57,750 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:57,775 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:57,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:57,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16
[2020-10-16 10:52:57,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071696243]
[2020-10-16 10:52:57,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states
[2020-10-16 10:52:57,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:57,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2020-10-16 10:52:57,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306
[2020-10-16 10:52:57,777 INFO L87 Difference]: Start difference. First operand 74 states and 187 transitions. Second operand 18 states.
[2020-10-16 10:52:58,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:58,432 INFO L93 Difference]: Finished difference Result 92 states and 223 transitions.
[2020-10-16 10:52:58,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states.
[2020-10-16 10:52:58,433 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 22
[2020-10-16 10:52:58,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:58,434 INFO L225 Difference]: With dead ends: 92
[2020-10-16 10:52:58,434 INFO L226 Difference]: Without dead ends: 86
[2020-10-16 10:52:58,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=536, Invalid=1270, Unknown=0, NotChecked=0, Total=1806
[2020-10-16 10:52:58,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states.
[2020-10-16 10:52:58,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 75.
[2020-10-16 10:52:58,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states.
[2020-10-16 10:52:58,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 189 transitions.
[2020-10-16 10:52:58,436 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 189 transitions. Word has length 22
[2020-10-16 10:52:58,436 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:58,436 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 189 transitions.
[2020-10-16 10:52:58,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states.
[2020-10-16 10:52:58,436 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 189 transitions.
[2020-10-16 10:52:58,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2020-10-16 10:52:58,437 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:58,437 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:52:58,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,117 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:58,644 INFO L429 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:52:58,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:52:58,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1113431413, now seen corresponding path program 120 times
[2020-10-16 10:52:58,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:52:58,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719274653]
[2020-10-16 10:52:58,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:52:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:52:58,828 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:58,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719274653]
[2020-10-16 10:52:58,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485805118]
[2020-10-16 10:52:58,829 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:52:58,907 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s)
[2020-10-16 10:52:58,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:52:58,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core
[2020-10-16 10:52:58,910 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:52:58,941 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:52:58,960 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:52:58,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:52:58,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17
[2020-10-16 10:52:58,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517710711]
[2020-10-16 10:52:58,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states
[2020-10-16 10:52:58,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:52:58,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2020-10-16 10:52:58,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342
[2020-10-16 10:52:58,962 INFO L87 Difference]: Start difference. First operand 75 states and 189 transitions. Second operand 19 states.
[2020-10-16 10:52:59,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:52:59,922 INFO L93 Difference]: Finished difference Result 91 states and 221 transitions.
[2020-10-16 10:52:59,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states.
[2020-10-16 10:52:59,922 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 22
[2020-10-16 10:52:59,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:52:59,923 INFO L225 Difference]: With dead ends: 91
[2020-10-16 10:52:59,923 INFO L226 Difference]: Without dead ends: 85
[2020-10-16 10:52:59,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=612, Invalid=1458, Unknown=0, NotChecked=0, Total=2070
[2020-10-16 10:52:59,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states.
[2020-10-16 10:52:59,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 74.
[2020-10-16 10:52:59,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states.
[2020-10-16 10:52:59,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 187 transitions.
[2020-10-16 10:52:59,925 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 187 transitions. Word has length 22
[2020-10-16 10:52:59,926 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:52:59,926 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 187 transitions.
[2020-10-16 10:52:59,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states.
[2020-10-16 10:52:59,926 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 187 transitions.
[2020-10-16 10:52:59,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2020-10-16 10:52:59,926 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:52:59,927 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:00,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,118 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:00,127 INFO L429 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:00,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:00,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1112941303, now seen corresponding path program 121 times
[2020-10-16 10:53:00,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:00,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013195525]
[2020-10-16 10:53:00,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:00,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:00,292 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:00,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013195525]
[2020-10-16 10:53:00,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907594088]
[2020-10-16 10:53:00,293 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:00,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:00,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core
[2020-10-16 10:53:00,340 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:00,367 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:00,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:00,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16
[2020-10-16 10:53:00,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72032282]
[2020-10-16 10:53:00,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states
[2020-10-16 10:53:00,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:00,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2020-10-16 10:53:00,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306
[2020-10-16 10:53:00,369 INFO L87 Difference]: Start difference. First operand 74 states and 187 transitions. Second operand 18 states.
[2020-10-16 10:53:01,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:01,107 INFO L93 Difference]: Finished difference Result 107 states and 261 transitions.
[2020-10-16 10:53:01,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states.
[2020-10-16 10:53:01,108 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 22
[2020-10-16 10:53:01,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:01,109 INFO L225 Difference]: With dead ends: 107
[2020-10-16 10:53:01,109 INFO L226 Difference]: Without dead ends: 101
[2020-10-16 10:53:01,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=627, Invalid=1353, Unknown=0, NotChecked=0, Total=1980
[2020-10-16 10:53:01,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states.
[2020-10-16 10:53:01,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 78.
[2020-10-16 10:53:01,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states.
[2020-10-16 10:53:01,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 201 transitions.
[2020-10-16 10:53:01,113 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 201 transitions. Word has length 22
[2020-10-16 10:53:01,113 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:01,114 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 201 transitions.
[2020-10-16 10:53:01,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states.
[2020-10-16 10:53:01,114 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 201 transitions.
[2020-10-16 10:53:01,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2020-10-16 10:53:01,114 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:01,115 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:01,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122
[2020-10-16 10:53:01,326 INFO L429 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:01,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:01,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1112924563, now seen corresponding path program 122 times
[2020-10-16 10:53:01,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:01,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871539162]
[2020-10-16 10:53:01,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:01,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:01,467 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:01,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871539162]
[2020-10-16 10:53:01,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851200010]
[2020-10-16 10:53:01,467 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:01,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 10:53:01,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:53:01,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core
[2020-10-16 10:53:01,519 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:01,539 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:53:01,552 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:01,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:01,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17
[2020-10-16 10:53:01,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268953813]
[2020-10-16 10:53:01,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states
[2020-10-16 10:53:01,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:01,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2020-10-16 10:53:01,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342
[2020-10-16 10:53:01,554 INFO L87 Difference]: Start difference. First operand 78 states and 201 transitions. Second operand 19 states.
[2020-10-16 10:53:02,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:02,476 INFO L93 Difference]: Finished difference Result 88 states and 217 transitions.
[2020-10-16 10:53:02,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states.
[2020-10-16 10:53:02,477 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 22
[2020-10-16 10:53:02,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:02,478 INFO L225 Difference]: With dead ends: 88
[2020-10-16 10:53:02,478 INFO L226 Difference]: Without dead ends: 80
[2020-10-16 10:53:02,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=710, Invalid=1546, Unknown=0, NotChecked=0, Total=2256
[2020-10-16 10:53:02,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states.
[2020-10-16 10:53:02,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 57.
[2020-10-16 10:53:02,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states.
[2020-10-16 10:53:02,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 138 transitions.
[2020-10-16 10:53:02,480 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 138 transitions. Word has length 22
[2020-10-16 10:53:02,480 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:02,480 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 138 transitions.
[2020-10-16 10:53:02,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states.
[2020-10-16 10:53:02,481 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 138 transitions.
[2020-10-16 10:53:02,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2020-10-16 10:53:02,481 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:02,481 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:02,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123
[2020-10-16 10:53:02,683 INFO L429 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:02,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:02,684 INFO L82 PathProgramCache]: Analyzing trace with hash 117880753, now seen corresponding path program 123 times
[2020-10-16 10:53:02,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:02,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279546385]
[2020-10-16 10:53:02,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:02,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:02,848 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:02,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279546385]
[2020-10-16 10:53:02,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258342523]
[2020-10-16 10:53:02,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:02,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s)
[2020-10-16 10:53:02,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:53:02,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core
[2020-10-16 10:53:02,901 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:02,921 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-10-16 10:53:02,938 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:02,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:02,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17
[2020-10-16 10:53:02,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919461803]
[2020-10-16 10:53:02,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states
[2020-10-16 10:53:02,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:02,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2020-10-16 10:53:02,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342
[2020-10-16 10:53:02,940 INFO L87 Difference]: Start difference. First operand 57 states and 138 transitions. Second operand 19 states.
[2020-10-16 10:53:03,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:03,791 INFO L93 Difference]: Finished difference Result 100 states and 243 transitions.
[2020-10-16 10:53:03,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states.
[2020-10-16 10:53:03,792 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 22
[2020-10-16 10:53:03,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:03,792 INFO L225 Difference]: With dead ends: 100
[2020-10-16 10:53:03,792 INFO L226 Difference]: Without dead ends: 95
[2020-10-16 10:53:03,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=745, Invalid=1511, Unknown=0, NotChecked=0, Total=2256
[2020-10-16 10:53:03,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states.
[2020-10-16 10:53:03,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 76.
[2020-10-16 10:53:03,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states.
[2020-10-16 10:53:03,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 193 transitions.
[2020-10-16 10:53:03,796 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 193 transitions. Word has length 22
[2020-10-16 10:53:03,796 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:03,796 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 193 transitions.
[2020-10-16 10:53:03,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states.
[2020-10-16 10:53:03,796 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 193 transitions.
[2020-10-16 10:53:03,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2020-10-16 10:53:03,796 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:03,796 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:03,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124
[2020-10-16 10:53:03,997 INFO L429 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:03,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:03,998 INFO L82 PathProgramCache]: Analyzing trace with hash -140906778, now seen corresponding path program 124 times
[2020-10-16 10:53:03,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:03,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894649727]
[2020-10-16 10:53:03,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:04,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:04,174 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:04,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894649727]
[2020-10-16 10:53:04,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700834357]
[2020-10-16 10:53:04,174 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:04,218 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 10:53:04,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:53:04,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 19 conjunts are in the unsatisfiable core
[2020-10-16 10:53:04,220 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:04,240 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-10-16 10:53:04,259 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:04,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:04,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18
[2020-10-16 10:53:04,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944311895]
[2020-10-16 10:53:04,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states
[2020-10-16 10:53:04,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:04,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2020-10-16 10:53:04,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380
[2020-10-16 10:53:04,261 INFO L87 Difference]: Start difference. First operand 76 states and 193 transitions. Second operand 20 states.
[2020-10-16 10:53:05,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:05,198 INFO L93 Difference]: Finished difference Result 84 states and 213 transitions.
[2020-10-16 10:53:05,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states.
[2020-10-16 10:53:05,199 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 23
[2020-10-16 10:53:05,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:05,200 INFO L225 Difference]: With dead ends: 84
[2020-10-16 10:53:05,200 INFO L226 Difference]: Without dead ends: 79
[2020-10-16 10:53:05,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=761, Invalid=1591, Unknown=0, NotChecked=0, Total=2352
[2020-10-16 10:53:05,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states.
[2020-10-16 10:53:05,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 58.
[2020-10-16 10:53:05,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states.
[2020-10-16 10:53:05,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 142 transitions.
[2020-10-16 10:53:05,202 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 142 transitions. Word has length 23
[2020-10-16 10:53:05,203 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:05,203 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 142 transitions.
[2020-10-16 10:53:05,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states.
[2020-10-16 10:53:05,203 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 142 transitions.
[2020-10-16 10:53:05,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2020-10-16 10:53:05,203 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:05,203 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:05,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125
[2020-10-16 10:53:05,404 INFO L429 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:05,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:05,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1335609647, now seen corresponding path program 125 times
[2020-10-16 10:53:05,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:05,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878474877]
[2020-10-16 10:53:05,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:05,633 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:05,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878474877]
[2020-10-16 10:53:05,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868534350]
[2020-10-16 10:53:05,634 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:05,684 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s)
[2020-10-16 10:53:05,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:53:05,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 19 conjunts are in the unsatisfiable core
[2020-10-16 10:53:05,686 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:05,694 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:05,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:05,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17
[2020-10-16 10:53:05,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665383877]
[2020-10-16 10:53:05,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states
[2020-10-16 10:53:05,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:05,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2020-10-16 10:53:05,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342
[2020-10-16 10:53:05,695 INFO L87 Difference]: Start difference. First operand 58 states and 142 transitions. Second operand 19 states.
[2020-10-16 10:53:06,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:06,056 INFO L93 Difference]: Finished difference Result 90 states and 209 transitions.
[2020-10-16 10:53:06,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states.
[2020-10-16 10:53:06,057 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 23
[2020-10-16 10:53:06,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:06,058 INFO L225 Difference]: With dead ends: 90
[2020-10-16 10:53:06,058 INFO L226 Difference]: Without dead ends: 84
[2020-10-16 10:53:06,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=363, Invalid=759, Unknown=0, NotChecked=0, Total=1122
[2020-10-16 10:53:06,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states.
[2020-10-16 10:53:06,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 66.
[2020-10-16 10:53:06,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states.
[2020-10-16 10:53:06,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 161 transitions.
[2020-10-16 10:53:06,060 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 161 transitions. Word has length 23
[2020-10-16 10:53:06,060 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:06,060 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 161 transitions.
[2020-10-16 10:53:06,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states.
[2020-10-16 10:53:06,061 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 161 transitions.
[2020-10-16 10:53:06,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2020-10-16 10:53:06,061 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:06,061 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:06,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,123 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:06,265 INFO L429 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:06,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:06,265 INFO L82 PathProgramCache]: Analyzing trace with hash -2146158283, now seen corresponding path program 126 times
[2020-10-16 10:53:06,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:06,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262464530]
[2020-10-16 10:53:06,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:06,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:06,506 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:06,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262464530]
[2020-10-16 10:53:06,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887186102]
[2020-10-16 10:53:06,507 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:06,555 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s)
[2020-10-16 10:53:06,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:53:06,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 19 conjunts are in the unsatisfiable core
[2020-10-16 10:53:06,558 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:06,581 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:53:06,591 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:06,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:06,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18
[2020-10-16 10:53:06,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785183384]
[2020-10-16 10:53:06,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states
[2020-10-16 10:53:06,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:06,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2020-10-16 10:53:06,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380
[2020-10-16 10:53:06,592 INFO L87 Difference]: Start difference. First operand 66 states and 161 transitions. Second operand 20 states.
[2020-10-16 10:53:07,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:07,042 INFO L93 Difference]: Finished difference Result 106 states and 241 transitions.
[2020-10-16 10:53:07,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2020-10-16 10:53:07,043 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 23
[2020-10-16 10:53:07,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:07,043 INFO L225 Difference]: With dead ends: 106
[2020-10-16 10:53:07,044 INFO L226 Difference]: Without dead ends: 100
[2020-10-16 10:53:07,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=372, Invalid=888, Unknown=0, NotChecked=0, Total=1260
[2020-10-16 10:53:07,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states.
[2020-10-16 10:53:07,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 64.
[2020-10-16 10:53:07,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states.
[2020-10-16 10:53:07,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 157 transitions.
[2020-10-16 10:53:07,046 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 157 transitions. Word has length 23
[2020-10-16 10:53:07,047 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:07,047 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 157 transitions.
[2020-10-16 10:53:07,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states.
[2020-10-16 10:53:07,047 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 157 transitions.
[2020-10-16 10:53:07,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2020-10-16 10:53:07,047 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:07,048 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:07,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable127
[2020-10-16 10:53:07,255 INFO L429 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:07,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:07,255 INFO L82 PathProgramCache]: Analyzing trace with hash -2093881677, now seen corresponding path program 127 times
[2020-10-16 10:53:07,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:07,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144716300]
[2020-10-16 10:53:07,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:07,487 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:07,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144716300]
[2020-10-16 10:53:07,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234838901]
[2020-10-16 10:53:07,488 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:07,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 19 conjunts are in the unsatisfiable core
[2020-10-16 10:53:07,533 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:07,543 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:07,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:07,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17
[2020-10-16 10:53:07,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453368869]
[2020-10-16 10:53:07,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states
[2020-10-16 10:53:07,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:07,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2020-10-16 10:53:07,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342
[2020-10-16 10:53:07,545 INFO L87 Difference]: Start difference. First operand 64 states and 157 transitions. Second operand 19 states.
[2020-10-16 10:53:08,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:08,033 INFO L93 Difference]: Finished difference Result 107 states and 245 transitions.
[2020-10-16 10:53:08,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states.
[2020-10-16 10:53:08,033 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 23
[2020-10-16 10:53:08,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:08,034 INFO L225 Difference]: With dead ends: 107
[2020-10-16 10:53:08,034 INFO L226 Difference]: Without dead ends: 101
[2020-10-16 10:53:08,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=377, Invalid=955, Unknown=0, NotChecked=0, Total=1332
[2020-10-16 10:53:08,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states.
[2020-10-16 10:53:08,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 67.
[2020-10-16 10:53:08,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states.
[2020-10-16 10:53:08,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 165 transitions.
[2020-10-16 10:53:08,037 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 165 transitions. Word has length 23
[2020-10-16 10:53:08,038 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:08,038 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 165 transitions.
[2020-10-16 10:53:08,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states.
[2020-10-16 10:53:08,038 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 165 transitions.
[2020-10-16 10:53:08,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2020-10-16 10:53:08,039 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:08,039 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:08,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128
[2020-10-16 10:53:08,247 INFO L429 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:08,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:08,247 INFO L82 PathProgramCache]: Analyzing trace with hash -217632233, now seen corresponding path program 128 times
[2020-10-16 10:53:08,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:08,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667056460]
[2020-10-16 10:53:08,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:08,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:08,473 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:08,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667056460]
[2020-10-16 10:53:08,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639384714]
[2020-10-16 10:53:08,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:08,521 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 10:53:08,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:53:08,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 19 conjunts are in the unsatisfiable core
[2020-10-16 10:53:08,523 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:08,544 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:53:08,557 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:08,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:08,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18
[2020-10-16 10:53:08,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551105847]
[2020-10-16 10:53:08,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states
[2020-10-16 10:53:08,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:08,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2020-10-16 10:53:08,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380
[2020-10-16 10:53:08,558 INFO L87 Difference]: Start difference. First operand 67 states and 165 transitions. Second operand 20 states.
[2020-10-16 10:53:09,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:09,081 INFO L93 Difference]: Finished difference Result 119 states and 269 transitions.
[2020-10-16 10:53:09,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states.
[2020-10-16 10:53:09,082 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 23
[2020-10-16 10:53:09,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:09,083 INFO L225 Difference]: With dead ends: 119
[2020-10-16 10:53:09,083 INFO L226 Difference]: Without dead ends: 113
[2020-10-16 10:53:09,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=409, Invalid=1073, Unknown=0, NotChecked=0, Total=1482
[2020-10-16 10:53:09,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states.
[2020-10-16 10:53:09,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 66.
[2020-10-16 10:53:09,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states.
[2020-10-16 10:53:09,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 163 transitions.
[2020-10-16 10:53:09,086 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 163 transitions. Word has length 23
[2020-10-16 10:53:09,086 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:09,086 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 163 transitions.
[2020-10-16 10:53:09,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states.
[2020-10-16 10:53:09,086 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 163 transitions.
[2020-10-16 10:53:09,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2020-10-16 10:53:09,086 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:09,087 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:09,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129
[2020-10-16 10:53:09,295 INFO L429 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:09,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:09,295 INFO L82 PathProgramCache]: Analyzing trace with hash 470689557, now seen corresponding path program 129 times
[2020-10-16 10:53:09,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:09,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264963913]
[2020-10-16 10:53:09,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:09,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:09,514 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:09,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264963913]
[2020-10-16 10:53:09,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149020623]
[2020-10-16 10:53:09,515 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:09,562 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s)
[2020-10-16 10:53:09,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:53:09,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 19 conjunts are in the unsatisfiable core
[2020-10-16 10:53:09,563 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:09,577 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:09,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:09,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17
[2020-10-16 10:53:09,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164182522]
[2020-10-16 10:53:09,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states
[2020-10-16 10:53:09,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:09,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2020-10-16 10:53:09,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342
[2020-10-16 10:53:09,578 INFO L87 Difference]: Start difference. First operand 66 states and 163 transitions. Second operand 19 states.
[2020-10-16 10:53:10,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:10,124 INFO L93 Difference]: Finished difference Result 119 states and 271 transitions.
[2020-10-16 10:53:10,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states.
[2020-10-16 10:53:10,125 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 23
[2020-10-16 10:53:10,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:10,126 INFO L225 Difference]: With dead ends: 119
[2020-10-16 10:53:10,126 INFO L226 Difference]: Without dead ends: 113
[2020-10-16 10:53:10,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=428, Invalid=1132, Unknown=0, NotChecked=0, Total=1560
[2020-10-16 10:53:10,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states.
[2020-10-16 10:53:10,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 69.
[2020-10-16 10:53:10,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states.
[2020-10-16 10:53:10,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 171 transitions.
[2020-10-16 10:53:10,128 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 171 transitions. Word has length 23
[2020-10-16 10:53:10,129 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:10,129 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 171 transitions.
[2020-10-16 10:53:10,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states.
[2020-10-16 10:53:10,129 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 171 transitions.
[2020-10-16 10:53:10,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2020-10-16 10:53:10,129 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:10,129 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:10,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,127 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:10,332 INFO L429 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:10,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:10,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1455881081, now seen corresponding path program 130 times
[2020-10-16 10:53:10,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:10,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786073818]
[2020-10-16 10:53:10,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:10,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:10,548 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:10,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786073818]
[2020-10-16 10:53:10,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290308601]
[2020-10-16 10:53:10,549 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:10,596 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 10:53:10,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:53:10,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 19 conjunts are in the unsatisfiable core
[2020-10-16 10:53:10,598 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:10,619 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:53:10,631 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:10,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:10,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18
[2020-10-16 10:53:10,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596468240]
[2020-10-16 10:53:10,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states
[2020-10-16 10:53:10,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:10,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2020-10-16 10:53:10,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380
[2020-10-16 10:53:10,632 INFO L87 Difference]: Start difference. First operand 69 states and 171 transitions. Second operand 20 states.
[2020-10-16 10:53:11,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:11,252 INFO L93 Difference]: Finished difference Result 116 states and 265 transitions.
[2020-10-16 10:53:11,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states.
[2020-10-16 10:53:11,252 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 23
[2020-10-16 10:53:11,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:11,253 INFO L225 Difference]: With dead ends: 116
[2020-10-16 10:53:11,253 INFO L226 Difference]: Without dead ends: 110
[2020-10-16 10:53:11,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=434, Invalid=1206, Unknown=0, NotChecked=0, Total=1640
[2020-10-16 10:53:11,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states.
[2020-10-16 10:53:11,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 68.
[2020-10-16 10:53:11,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states.
[2020-10-16 10:53:11,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 169 transitions.
[2020-10-16 10:53:11,256 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 169 transitions. Word has length 23
[2020-10-16 10:53:11,256 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:11,256 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 169 transitions.
[2020-10-16 10:53:11,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states.
[2020-10-16 10:53:11,256 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 169 transitions.
[2020-10-16 10:53:11,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2020-10-16 10:53:11,256 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:11,256 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:11,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,128 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:11,457 INFO L429 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:11,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:11,458 INFO L82 PathProgramCache]: Analyzing trace with hash -161277961, now seen corresponding path program 131 times
[2020-10-16 10:53:11,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:11,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094341298]
[2020-10-16 10:53:11,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:11,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:11,659 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:11,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094341298]
[2020-10-16 10:53:11,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015305680]
[2020-10-16 10:53:11,660 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:11,710 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s)
[2020-10-16 10:53:11,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:53:11,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 19 conjunts are in the unsatisfiable core
[2020-10-16 10:53:11,712 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:11,727 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:11,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:11,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17
[2020-10-16 10:53:11,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848391432]
[2020-10-16 10:53:11,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states
[2020-10-16 10:53:11,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:11,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2020-10-16 10:53:11,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342
[2020-10-16 10:53:11,729 INFO L87 Difference]: Start difference. First operand 68 states and 169 transitions. Second operand 19 states.
[2020-10-16 10:53:12,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:12,314 INFO L93 Difference]: Finished difference Result 117 states and 269 transitions.
[2020-10-16 10:53:12,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states.
[2020-10-16 10:53:12,315 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 23
[2020-10-16 10:53:12,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:12,315 INFO L225 Difference]: With dead ends: 117
[2020-10-16 10:53:12,315 INFO L226 Difference]: Without dead ends: 111
[2020-10-16 10:53:12,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=468, Invalid=1254, Unknown=0, NotChecked=0, Total=1722
[2020-10-16 10:53:12,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states.
[2020-10-16 10:53:12,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 71.
[2020-10-16 10:53:12,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states.
[2020-10-16 10:53:12,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 177 transitions.
[2020-10-16 10:53:12,318 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 177 transitions. Word has length 23
[2020-10-16 10:53:12,318 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:12,318 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 177 transitions.
[2020-10-16 10:53:12,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states.
[2020-10-16 10:53:12,318 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 177 transitions.
[2020-10-16 10:53:12,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2020-10-16 10:53:12,319 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:12,319 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:12,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,129 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:12,520 INFO L429 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:12,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:12,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1095611739, now seen corresponding path program 132 times
[2020-10-16 10:53:12,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:12,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056145308]
[2020-10-16 10:53:12,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:12,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:12,760 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:12,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056145308]
[2020-10-16 10:53:12,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267645837]
[2020-10-16 10:53:12,761 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:12,834 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s)
[2020-10-16 10:53:12,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:53:12,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 19 conjunts are in the unsatisfiable core
[2020-10-16 10:53:12,837 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:12,866 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:53:12,880 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:12,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:12,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18
[2020-10-16 10:53:12,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554577251]
[2020-10-16 10:53:12,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states
[2020-10-16 10:53:12,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:12,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2020-10-16 10:53:12,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380
[2020-10-16 10:53:12,882 INFO L87 Difference]: Start difference. First operand 71 states and 177 transitions. Second operand 20 states.
[2020-10-16 10:53:13,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:13,574 INFO L93 Difference]: Finished difference Result 114 states and 263 transitions.
[2020-10-16 10:53:13,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2020-10-16 10:53:13,575 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 23
[2020-10-16 10:53:13,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:13,575 INFO L225 Difference]: With dead ends: 114
[2020-10-16 10:53:13,575 INFO L226 Difference]: Without dead ends: 108
[2020-10-16 10:53:13,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=475, Invalid=1331, Unknown=0, NotChecked=0, Total=1806
[2020-10-16 10:53:13,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states.
[2020-10-16 10:53:13,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 70.
[2020-10-16 10:53:13,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states.
[2020-10-16 10:53:13,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 175 transitions.
[2020-10-16 10:53:13,578 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 175 transitions. Word has length 23
[2020-10-16 10:53:13,578 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:13,578 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 175 transitions.
[2020-10-16 10:53:13,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states.
[2020-10-16 10:53:13,578 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 175 transitions.
[2020-10-16 10:53:13,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2020-10-16 10:53:13,579 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:13,579 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:13,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133
[2020-10-16 10:53:13,780 INFO L429 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:13,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:13,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1583163047, now seen corresponding path program 133 times
[2020-10-16 10:53:13,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:13,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348984294]
[2020-10-16 10:53:13,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:13,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:13,978 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:13,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348984294]
[2020-10-16 10:53:13,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627690687]
[2020-10-16 10:53:13,979 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:14,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:14,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 19 conjunts are in the unsatisfiable core
[2020-10-16 10:53:14,026 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:14,049 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:14,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:14,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17
[2020-10-16 10:53:14,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019160832]
[2020-10-16 10:53:14,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states
[2020-10-16 10:53:14,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:14,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2020-10-16 10:53:14,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342
[2020-10-16 10:53:14,051 INFO L87 Difference]: Start difference. First operand 70 states and 175 transitions. Second operand 19 states.
[2020-10-16 10:53:14,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:14,698 INFO L93 Difference]: Finished difference Result 115 states and 267 transitions.
[2020-10-16 10:53:14,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states.
[2020-10-16 10:53:14,698 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 23
[2020-10-16 10:53:14,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:14,699 INFO L225 Difference]: With dead ends: 115
[2020-10-16 10:53:14,699 INFO L226 Difference]: Without dead ends: 109
[2020-10-16 10:53:14,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=524, Invalid=1368, Unknown=0, NotChecked=0, Total=1892
[2020-10-16 10:53:14,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states.
[2020-10-16 10:53:14,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 73.
[2020-10-16 10:53:14,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states.
[2020-10-16 10:53:14,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 183 transitions.
[2020-10-16 10:53:14,701 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 183 transitions. Word has length 23
[2020-10-16 10:53:14,702 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:14,702 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 183 transitions.
[2020-10-16 10:53:14,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states.
[2020-10-16 10:53:14,702 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 183 transitions.
[2020-10-16 10:53:14,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2020-10-16 10:53:14,702 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:14,702 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:14,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134,131 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:14,903 INFO L429 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:14,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:14,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1063419971, now seen corresponding path program 134 times
[2020-10-16 10:53:14,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:14,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715972086]
[2020-10-16 10:53:14,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:14,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:15,106 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:15,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715972086]
[2020-10-16 10:53:15,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092612372]
[2020-10-16 10:53:15,106 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:15,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 10:53:15,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:53:15,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 19 conjunts are in the unsatisfiable core
[2020-10-16 10:53:15,153 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:15,175 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:53:15,189 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:15,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:15,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18
[2020-10-16 10:53:15,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853258922]
[2020-10-16 10:53:15,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states
[2020-10-16 10:53:15,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:15,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2020-10-16 10:53:15,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380
[2020-10-16 10:53:15,190 INFO L87 Difference]: Start difference. First operand 73 states and 183 transitions. Second operand 20 states.
[2020-10-16 10:53:15,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:15,979 INFO L93 Difference]: Finished difference Result 112 states and 261 transitions.
[2020-10-16 10:53:15,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states.
[2020-10-16 10:53:15,980 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 23
[2020-10-16 10:53:15,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:15,981 INFO L225 Difference]: With dead ends: 112
[2020-10-16 10:53:15,981 INFO L226 Difference]: Without dead ends: 106
[2020-10-16 10:53:15,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=532, Invalid=1448, Unknown=0, NotChecked=0, Total=1980
[2020-10-16 10:53:15,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states.
[2020-10-16 10:53:15,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 72.
[2020-10-16 10:53:15,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states.
[2020-10-16 10:53:15,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 181 transitions.
[2020-10-16 10:53:15,983 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 181 transitions. Word has length 23
[2020-10-16 10:53:15,983 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:15,983 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 181 transitions.
[2020-10-16 10:53:15,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states.
[2020-10-16 10:53:15,983 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 181 transitions.
[2020-10-16 10:53:15,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2020-10-16 10:53:15,984 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:15,984 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:16,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135
[2020-10-16 10:53:16,185 INFO L429 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:16,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:16,185 INFO L82 PathProgramCache]: Analyzing trace with hash 591891259, now seen corresponding path program 135 times
[2020-10-16 10:53:16,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:16,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123198667]
[2020-10-16 10:53:16,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:16,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:16,372 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:16,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123198667]
[2020-10-16 10:53:16,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264856925]
[2020-10-16 10:53:16,373 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:16,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s)
[2020-10-16 10:53:16,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:53:16,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 19 conjunts are in the unsatisfiable core
[2020-10-16 10:53:16,425 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:16,442 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:16,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:16,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17
[2020-10-16 10:53:16,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867885088]
[2020-10-16 10:53:16,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states
[2020-10-16 10:53:16,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:16,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2020-10-16 10:53:16,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342
[2020-10-16 10:53:16,444 INFO L87 Difference]: Start difference. First operand 72 states and 181 transitions. Second operand 19 states.
[2020-10-16 10:53:17,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:17,144 INFO L93 Difference]: Finished difference Result 113 states and 265 transitions.
[2020-10-16 10:53:17,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states.
[2020-10-16 10:53:17,147 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 23
[2020-10-16 10:53:17,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:17,148 INFO L225 Difference]: With dead ends: 113
[2020-10-16 10:53:17,148 INFO L226 Difference]: Without dead ends: 107
[2020-10-16 10:53:17,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=596, Invalid=1474, Unknown=0, NotChecked=0, Total=2070
[2020-10-16 10:53:17,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states.
[2020-10-16 10:53:17,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 75.
[2020-10-16 10:53:17,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states.
[2020-10-16 10:53:17,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 189 transitions.
[2020-10-16 10:53:17,150 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 189 transitions. Word has length 23
[2020-10-16 10:53:17,150 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:17,150 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 189 transitions.
[2020-10-16 10:53:17,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states.
[2020-10-16 10:53:17,150 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 189 transitions.
[2020-10-16 10:53:17,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2020-10-16 10:53:17,150 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:17,150 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:17,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136
[2020-10-16 10:53:17,351 INFO L429 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:17,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:17,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1128236385, now seen corresponding path program 136 times
[2020-10-16 10:53:17,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:17,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487924644]
[2020-10-16 10:53:17,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:17,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:17,536 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:17,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487924644]
[2020-10-16 10:53:17,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981564075]
[2020-10-16 10:53:17,536 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:17,581 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 10:53:17,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:53:17,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 19 conjunts are in the unsatisfiable core
[2020-10-16 10:53:17,583 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:17,606 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:53:17,621 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:17,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:17,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18
[2020-10-16 10:53:17,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14917825]
[2020-10-16 10:53:17,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states
[2020-10-16 10:53:17,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:17,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2020-10-16 10:53:17,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380
[2020-10-16 10:53:17,623 INFO L87 Difference]: Start difference. First operand 75 states and 189 transitions. Second operand 20 states.
[2020-10-16 10:53:18,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:18,488 INFO L93 Difference]: Finished difference Result 110 states and 259 transitions.
[2020-10-16 10:53:18,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states.
[2020-10-16 10:53:18,489 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 23
[2020-10-16 10:53:18,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:18,490 INFO L225 Difference]: With dead ends: 110
[2020-10-16 10:53:18,490 INFO L226 Difference]: Without dead ends: 104
[2020-10-16 10:53:18,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=605, Invalid=1557, Unknown=0, NotChecked=0, Total=2162
[2020-10-16 10:53:18,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states.
[2020-10-16 10:53:18,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 74.
[2020-10-16 10:53:18,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states.
[2020-10-16 10:53:18,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 187 transitions.
[2020-10-16 10:53:18,493 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 187 transitions. Word has length 23
[2020-10-16 10:53:18,493 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:18,493 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 187 transitions.
[2020-10-16 10:53:18,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states.
[2020-10-16 10:53:18,493 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 187 transitions.
[2020-10-16 10:53:18,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2020-10-16 10:53:18,493 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:18,493 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:18,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable137
[2020-10-16 10:53:18,694 INFO L429 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:18,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:18,695 INFO L82 PathProgramCache]: Analyzing trace with hash -657240675, now seen corresponding path program 137 times
[2020-10-16 10:53:18,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:18,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134633474]
[2020-10-16 10:53:18,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:18,879 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:18,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134633474]
[2020-10-16 10:53:18,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532226920]
[2020-10-16 10:53:18,880 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:18,926 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s)
[2020-10-16 10:53:18,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:53:18,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 19 conjunts are in the unsatisfiable core
[2020-10-16 10:53:18,928 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:18,952 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:18,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:18,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17
[2020-10-16 10:53:18,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985334643]
[2020-10-16 10:53:18,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states
[2020-10-16 10:53:18,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:18,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2020-10-16 10:53:18,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342
[2020-10-16 10:53:18,953 INFO L87 Difference]: Start difference. First operand 74 states and 187 transitions. Second operand 19 states.
[2020-10-16 10:53:19,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:19,810 INFO L93 Difference]: Finished difference Result 111 states and 263 transitions.
[2020-10-16 10:53:19,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states.
[2020-10-16 10:53:19,811 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 23
[2020-10-16 10:53:19,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:19,812 INFO L225 Difference]: With dead ends: 111
[2020-10-16 10:53:19,812 INFO L226 Difference]: Without dead ends: 105
[2020-10-16 10:53:19,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=684, Invalid=1572, Unknown=0, NotChecked=0, Total=2256
[2020-10-16 10:53:19,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states.
[2020-10-16 10:53:19,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 77.
[2020-10-16 10:53:19,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states.
[2020-10-16 10:53:19,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 195 transitions.
[2020-10-16 10:53:19,814 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 195 transitions. Word has length 23
[2020-10-16 10:53:19,814 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:19,814 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 195 transitions.
[2020-10-16 10:53:19,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states.
[2020-10-16 10:53:19,814 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 195 transitions.
[2020-10-16 10:53:19,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2020-10-16 10:53:19,815 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:19,815 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:20,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138,135 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:20,016 INFO L429 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:20,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:20,016 INFO L82 PathProgramCache]: Analyzing trace with hash -641153535, now seen corresponding path program 138 times
[2020-10-16 10:53:20,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:20,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969233967]
[2020-10-16 10:53:20,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:20,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:20,201 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:20,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969233967]
[2020-10-16 10:53:20,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685535069]
[2020-10-16 10:53:20,202 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:20,252 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s)
[2020-10-16 10:53:20,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:53:20,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 19 conjunts are in the unsatisfiable core
[2020-10-16 10:53:20,254 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:20,277 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:53:20,292 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:20,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:20,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18
[2020-10-16 10:53:20,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005448032]
[2020-10-16 10:53:20,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states
[2020-10-16 10:53:20,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:20,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2020-10-16 10:53:20,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380
[2020-10-16 10:53:20,294 INFO L87 Difference]: Start difference. First operand 77 states and 195 transitions. Second operand 20 states.
[2020-10-16 10:53:21,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:21,272 INFO L93 Difference]: Finished difference Result 108 states and 257 transitions.
[2020-10-16 10:53:21,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states.
[2020-10-16 10:53:21,273 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 23
[2020-10-16 10:53:21,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:21,274 INFO L225 Difference]: With dead ends: 108
[2020-10-16 10:53:21,274 INFO L226 Difference]: Without dead ends: 102
[2020-10-16 10:53:21,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=694, Invalid=1658, Unknown=0, NotChecked=0, Total=2352
[2020-10-16 10:53:21,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states.
[2020-10-16 10:53:21,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 76.
[2020-10-16 10:53:21,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states.
[2020-10-16 10:53:21,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 193 transitions.
[2020-10-16 10:53:21,276 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 193 transitions. Word has length 23
[2020-10-16 10:53:21,277 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:21,277 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 193 transitions.
[2020-10-16 10:53:21,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states.
[2020-10-16 10:53:21,277 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 193 transitions.
[2020-10-16 10:53:21,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2020-10-16 10:53:21,277 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:21,277 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:21,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 136 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139
[2020-10-16 10:53:21,478 INFO L429 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:21,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:21,478 INFO L82 PathProgramCache]: Analyzing trace with hash -640663425, now seen corresponding path program 139 times
[2020-10-16 10:53:21,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:21,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291055061]
[2020-10-16 10:53:21,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:21,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:21,659 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:21,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291055061]
[2020-10-16 10:53:21,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246443788]
[2020-10-16 10:53:21,660 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:21,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:21,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 19 conjunts are in the unsatisfiable core
[2020-10-16 10:53:21,706 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:21,725 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:21,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:21,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17
[2020-10-16 10:53:21,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306690202]
[2020-10-16 10:53:21,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states
[2020-10-16 10:53:21,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:21,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2020-10-16 10:53:21,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342
[2020-10-16 10:53:21,727 INFO L87 Difference]: Start difference. First operand 76 states and 193 transitions. Second operand 19 states.
[2020-10-16 10:53:22,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:22,539 INFO L93 Difference]: Finished difference Result 128 states and 307 transitions.
[2020-10-16 10:53:22,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states.
[2020-10-16 10:53:22,540 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 23
[2020-10-16 10:53:22,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:22,541 INFO L225 Difference]: With dead ends: 128
[2020-10-16 10:53:22,541 INFO L226 Difference]: Without dead ends: 122
[2020-10-16 10:53:22,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=788, Invalid=1662, Unknown=0, NotChecked=0, Total=2450
[2020-10-16 10:53:22,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states.
[2020-10-16 10:53:22,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 82.
[2020-10-16 10:53:22,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states.
[2020-10-16 10:53:22,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 213 transitions.
[2020-10-16 10:53:22,544 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 213 transitions. Word has length 23
[2020-10-16 10:53:22,544 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:22,544 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 213 transitions.
[2020-10-16 10:53:22,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states.
[2020-10-16 10:53:22,544 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 213 transitions.
[2020-10-16 10:53:22,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2020-10-16 10:53:22,545 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:22,545 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:22,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,137 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:22,753 INFO L429 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:22,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:22,753 INFO L82 PathProgramCache]: Analyzing trace with hash -640646685, now seen corresponding path program 140 times
[2020-10-16 10:53:22,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:22,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648683041]
[2020-10-16 10:53:22,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:22,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:22,934 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:22,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648683041]
[2020-10-16 10:53:22,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571677879]
[2020-10-16 10:53:22,935 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:22,981 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 10:53:22,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:53:22,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 19 conjunts are in the unsatisfiable core
[2020-10-16 10:53:22,983 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:23,007 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:53:23,022 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:23,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:23,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18
[2020-10-16 10:53:23,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727207286]
[2020-10-16 10:53:23,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states
[2020-10-16 10:53:23,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:23,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2020-10-16 10:53:23,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380
[2020-10-16 10:53:23,031 INFO L87 Difference]: Start difference. First operand 82 states and 213 transitions. Second operand 20 states.
[2020-10-16 10:53:24,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:24,023 INFO L93 Difference]: Finished difference Result 109 states and 263 transitions.
[2020-10-16 10:53:24,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states.
[2020-10-16 10:53:24,024 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 23
[2020-10-16 10:53:24,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:24,024 INFO L225 Difference]: With dead ends: 109
[2020-10-16 10:53:24,024 INFO L226 Difference]: Without dead ends: 101
[2020-10-16 10:53:24,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=799, Invalid=1751, Unknown=0, NotChecked=0, Total=2550
[2020-10-16 10:53:24,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states.
[2020-10-16 10:53:24,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 79.
[2020-10-16 10:53:24,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states.
[2020-10-16 10:53:24,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 201 transitions.
[2020-10-16 10:53:24,027 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 201 transitions. Word has length 23
[2020-10-16 10:53:24,028 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:24,028 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 201 transitions.
[2020-10-16 10:53:24,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states.
[2020-10-16 10:53:24,028 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 201 transitions.
[2020-10-16 10:53:24,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2020-10-16 10:53:24,028 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:24,028 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:24,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,138 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:24,231 INFO L429 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:24,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:24,231 INFO L82 PathProgramCache]: Analyzing trace with hash -768088516, now seen corresponding path program 141 times
[2020-10-16 10:53:24,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:24,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467758930]
[2020-10-16 10:53:24,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:24,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:24,482 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:24,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467758930]
[2020-10-16 10:53:24,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102998334]
[2020-10-16 10:53:24,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:24,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s)
[2020-10-16 10:53:24,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:53:24,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjunts are in the unsatisfiable core
[2020-10-16 10:53:24,539 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:24,550 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:24,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:24,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18
[2020-10-16 10:53:24,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105167440]
[2020-10-16 10:53:24,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states
[2020-10-16 10:53:24,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:24,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2020-10-16 10:53:24,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380
[2020-10-16 10:53:24,552 INFO L87 Difference]: Start difference. First operand 79 states and 201 transitions. Second operand 20 states.
[2020-10-16 10:53:25,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:25,017 INFO L93 Difference]: Finished difference Result 124 states and 291 transitions.
[2020-10-16 10:53:25,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2020-10-16 10:53:25,017 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 24
[2020-10-16 10:53:25,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:25,018 INFO L225 Difference]: With dead ends: 124
[2020-10-16 10:53:25,018 INFO L226 Difference]: Without dead ends: 118
[2020-10-16 10:53:25,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=405, Invalid=927, Unknown=0, NotChecked=0, Total=1332
[2020-10-16 10:53:25,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states.
[2020-10-16 10:53:25,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 81.
[2020-10-16 10:53:25,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states.
[2020-10-16 10:53:25,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 205 transitions.
[2020-10-16 10:53:25,021 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 205 transitions. Word has length 24
[2020-10-16 10:53:25,021 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:25,025 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 205 transitions.
[2020-10-16 10:53:25,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states.
[2020-10-16 10:53:25,025 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 205 transitions.
[2020-10-16 10:53:25,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2020-10-16 10:53:25,026 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:25,026 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:25,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,139 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:25,235 INFO L429 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:25,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:25,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1578637152, now seen corresponding path program 142 times
[2020-10-16 10:53:25,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:25,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442396788]
[2020-10-16 10:53:25,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:25,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:25,507 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:25,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442396788]
[2020-10-16 10:53:25,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611156517]
[2020-10-16 10:53:25,508 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:25,554 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 10:53:25,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:53:25,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjunts are in the unsatisfiable core
[2020-10-16 10:53:25,556 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:25,578 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:53:25,589 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:25,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:25,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19
[2020-10-16 10:53:25,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730736244]
[2020-10-16 10:53:25,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states
[2020-10-16 10:53:25,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:25,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2020-10-16 10:53:25,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420
[2020-10-16 10:53:25,591 INFO L87 Difference]: Start difference. First operand 81 states and 205 transitions. Second operand 21 states.
[2020-10-16 10:53:26,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:26,132 INFO L93 Difference]: Finished difference Result 121 states and 285 transitions.
[2020-10-16 10:53:26,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states.
[2020-10-16 10:53:26,133 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 24
[2020-10-16 10:53:26,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:26,134 INFO L225 Difference]: With dead ends: 121
[2020-10-16 10:53:26,134 INFO L226 Difference]: Without dead ends: 115
[2020-10-16 10:53:26,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=449, Invalid=1111, Unknown=0, NotChecked=0, Total=1560
[2020-10-16 10:53:26,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states.
[2020-10-16 10:53:26,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 80.
[2020-10-16 10:53:26,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states.
[2020-10-16 10:53:26,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 203 transitions.
[2020-10-16 10:53:26,136 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 203 transitions. Word has length 24
[2020-10-16 10:53:26,137 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:26,137 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 203 transitions.
[2020-10-16 10:53:26,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states.
[2020-10-16 10:53:26,137 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 203 transitions.
[2020-10-16 10:53:26,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2020-10-16 10:53:26,137 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:26,138 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:26,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,140 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:26,338 INFO L429 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:26,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:26,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1526360546, now seen corresponding path program 143 times
[2020-10-16 10:53:26,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:26,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386256218]
[2020-10-16 10:53:26,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:26,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:26,588 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:26,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386256218]
[2020-10-16 10:53:26,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773016789]
[2020-10-16 10:53:26,589 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:26,637 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s)
[2020-10-16 10:53:26,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:53:26,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjunts are in the unsatisfiable core
[2020-10-16 10:53:26,639 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:26,651 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:26,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:26,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18
[2020-10-16 10:53:26,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237637578]
[2020-10-16 10:53:26,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states
[2020-10-16 10:53:26,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:26,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2020-10-16 10:53:26,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380
[2020-10-16 10:53:26,653 INFO L87 Difference]: Start difference. First operand 80 states and 203 transitions. Second operand 20 states.
[2020-10-16 10:53:27,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:27,166 INFO L93 Difference]: Finished difference Result 118 states and 279 transitions.
[2020-10-16 10:53:27,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states.
[2020-10-16 10:53:27,167 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 24
[2020-10-16 10:53:27,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:27,168 INFO L225 Difference]: With dead ends: 118
[2020-10-16 10:53:27,168 INFO L226 Difference]: Without dead ends: 112
[2020-10-16 10:53:27,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=414, Invalid=1068, Unknown=0, NotChecked=0, Total=1482
[2020-10-16 10:53:27,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states.
[2020-10-16 10:53:27,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 81.
[2020-10-16 10:53:27,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states.
[2020-10-16 10:53:27,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 205 transitions.
[2020-10-16 10:53:27,170 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 205 transitions. Word has length 24
[2020-10-16 10:53:27,171 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:27,171 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 205 transitions.
[2020-10-16 10:53:27,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states.
[2020-10-16 10:53:27,171 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 205 transitions.
[2020-10-16 10:53:27,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2020-10-16 10:53:27,171 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:27,171 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:27,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144,141 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:27,379 INFO L429 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:27,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:27,379 INFO L82 PathProgramCache]: Analyzing trace with hash 349888898, now seen corresponding path program 144 times
[2020-10-16 10:53:27,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:27,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76989146]
[2020-10-16 10:53:27,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:27,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:27,627 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:27,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76989146]
[2020-10-16 10:53:27,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168802724]
[2020-10-16 10:53:27,627 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:27,677 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s)
[2020-10-16 10:53:27,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:53:27,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjunts are in the unsatisfiable core
[2020-10-16 10:53:27,679 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:27,703 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:53:27,715 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:27,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:27,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19
[2020-10-16 10:53:27,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429918966]
[2020-10-16 10:53:27,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states
[2020-10-16 10:53:27,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:27,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2020-10-16 10:53:27,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420
[2020-10-16 10:53:27,716 INFO L87 Difference]: Start difference. First operand 81 states and 205 transitions. Second operand 21 states.
[2020-10-16 10:53:28,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:28,379 INFO L93 Difference]: Finished difference Result 117 states and 277 transitions.
[2020-10-16 10:53:28,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states.
[2020-10-16 10:53:28,379 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 24
[2020-10-16 10:53:28,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:28,380 INFO L225 Difference]: With dead ends: 117
[2020-10-16 10:53:28,380 INFO L226 Difference]: Without dead ends: 111
[2020-10-16 10:53:28,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=465, Invalid=1257, Unknown=0, NotChecked=0, Total=1722
[2020-10-16 10:53:28,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states.
[2020-10-16 10:53:28,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 80.
[2020-10-16 10:53:28,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states.
[2020-10-16 10:53:28,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 203 transitions.
[2020-10-16 10:53:28,383 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 203 transitions. Word has length 24
[2020-10-16 10:53:28,383 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:28,383 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 203 transitions.
[2020-10-16 10:53:28,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states.
[2020-10-16 10:53:28,383 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 203 transitions.
[2020-10-16 10:53:28,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2020-10-16 10:53:28,383 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:28,383 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:28,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable145
[2020-10-16 10:53:28,584 INFO L429 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:28,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:28,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1038210688, now seen corresponding path program 145 times
[2020-10-16 10:53:28,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:28,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85333530]
[2020-10-16 10:53:28,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:28,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:28,828 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:28,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85333530]
[2020-10-16 10:53:28,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907794385]
[2020-10-16 10:53:28,829 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:28,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:28,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjunts are in the unsatisfiable core
[2020-10-16 10:53:28,878 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:28,891 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:28,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:28,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18
[2020-10-16 10:53:28,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170954632]
[2020-10-16 10:53:28,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states
[2020-10-16 10:53:28,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:28,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2020-10-16 10:53:28,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380
[2020-10-16 10:53:28,893 INFO L87 Difference]: Start difference. First operand 80 states and 203 transitions. Second operand 20 states.
[2020-10-16 10:53:29,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:29,483 INFO L93 Difference]: Finished difference Result 114 states and 271 transitions.
[2020-10-16 10:53:29,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states.
[2020-10-16 10:53:29,483 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 24
[2020-10-16 10:53:29,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:29,484 INFO L225 Difference]: With dead ends: 114
[2020-10-16 10:53:29,484 INFO L226 Difference]: Without dead ends: 108
[2020-10-16 10:53:29,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=439, Invalid=1201, Unknown=0, NotChecked=0, Total=1640
[2020-10-16 10:53:29,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states.
[2020-10-16 10:53:29,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 81.
[2020-10-16 10:53:29,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states.
[2020-10-16 10:53:29,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 205 transitions.
[2020-10-16 10:53:29,487 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 205 transitions. Word has length 24
[2020-10-16 10:53:29,487 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:29,487 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 205 transitions.
[2020-10-16 10:53:29,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states.
[2020-10-16 10:53:29,487 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 205 transitions.
[2020-10-16 10:53:29,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2020-10-16 10:53:29,487 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:29,488 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:29,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146
[2020-10-16 10:53:29,691 INFO L429 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:29,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:29,691 INFO L82 PathProgramCache]: Analyzing trace with hash 2023402212, now seen corresponding path program 146 times
[2020-10-16 10:53:29,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:29,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047709875]
[2020-10-16 10:53:29,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:29,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:29,929 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:29,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047709875]
[2020-10-16 10:53:29,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256449733]
[2020-10-16 10:53:29,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:29,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 10:53:29,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:53:29,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjunts are in the unsatisfiable core
[2020-10-16 10:53:29,978 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:30,001 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:53:30,015 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:30,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:30,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19
[2020-10-16 10:53:30,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548627735]
[2020-10-16 10:53:30,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states
[2020-10-16 10:53:30,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:30,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2020-10-16 10:53:30,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420
[2020-10-16 10:53:30,016 INFO L87 Difference]: Start difference. First operand 81 states and 205 transitions. Second operand 21 states.
[2020-10-16 10:53:30,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:30,769 INFO L93 Difference]: Finished difference Result 113 states and 269 transitions.
[2020-10-16 10:53:30,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2020-10-16 10:53:30,770 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 24
[2020-10-16 10:53:30,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:30,771 INFO L225 Difference]: With dead ends: 113
[2020-10-16 10:53:30,771 INFO L226 Difference]: Without dead ends: 107
[2020-10-16 10:53:30,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=497, Invalid=1395, Unknown=0, NotChecked=0, Total=1892
[2020-10-16 10:53:30,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states.
[2020-10-16 10:53:30,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 80.
[2020-10-16 10:53:30,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states.
[2020-10-16 10:53:30,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 203 transitions.
[2020-10-16 10:53:30,773 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 203 transitions. Word has length 24
[2020-10-16 10:53:30,774 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:30,774 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 203 transitions.
[2020-10-16 10:53:30,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states.
[2020-10-16 10:53:30,774 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 203 transitions.
[2020-10-16 10:53:30,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2020-10-16 10:53:30,774 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:30,774 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:30,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 144 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147
[2020-10-16 10:53:30,982 INFO L429 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:30,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:30,982 INFO L82 PathProgramCache]: Analyzing trace with hash 406243170, now seen corresponding path program 147 times
[2020-10-16 10:53:30,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:30,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912917123]
[2020-10-16 10:53:30,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:31,206 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:31,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912917123]
[2020-10-16 10:53:31,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729204032]
[2020-10-16 10:53:31,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:31,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s)
[2020-10-16 10:53:31,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:53:31,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjunts are in the unsatisfiable core
[2020-10-16 10:53:31,256 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:31,275 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:31,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:31,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18
[2020-10-16 10:53:31,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101456048]
[2020-10-16 10:53:31,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states
[2020-10-16 10:53:31,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:31,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2020-10-16 10:53:31,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380
[2020-10-16 10:53:31,276 INFO L87 Difference]: Start difference. First operand 80 states and 203 transitions. Second operand 20 states.
[2020-10-16 10:53:31,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:31,925 INFO L93 Difference]: Finished difference Result 110 states and 263 transitions.
[2020-10-16 10:53:31,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states.
[2020-10-16 10:53:31,926 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 24
[2020-10-16 10:53:31,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:31,926 INFO L225 Difference]: With dead ends: 110
[2020-10-16 10:53:31,927 INFO L226 Difference]: Without dead ends: 104
[2020-10-16 10:53:31,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=480, Invalid=1326, Unknown=0, NotChecked=0, Total=1806
[2020-10-16 10:53:31,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states.
[2020-10-16 10:53:31,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 81.
[2020-10-16 10:53:31,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states.
[2020-10-16 10:53:31,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 205 transitions.
[2020-10-16 10:53:31,930 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 205 transitions. Word has length 24
[2020-10-16 10:53:31,930 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:31,930 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 205 transitions.
[2020-10-16 10:53:31,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states.
[2020-10-16 10:53:31,930 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 205 transitions.
[2020-10-16 10:53:31,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2020-10-16 10:53:31,931 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:31,931 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:32,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable148
[2020-10-16 10:53:32,141 INFO L429 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:32,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:32,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1663132870, now seen corresponding path program 148 times
[2020-10-16 10:53:32,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:32,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109229154]
[2020-10-16 10:53:32,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:32,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:32,377 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:32,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109229154]
[2020-10-16 10:53:32,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246350330]
[2020-10-16 10:53:32,378 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:32,425 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 10:53:32,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:53:32,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjunts are in the unsatisfiable core
[2020-10-16 10:53:32,427 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:32,450 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:53:32,464 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:32,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:32,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19
[2020-10-16 10:53:32,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992483798]
[2020-10-16 10:53:32,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states
[2020-10-16 10:53:32,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:32,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2020-10-16 10:53:32,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420
[2020-10-16 10:53:32,466 INFO L87 Difference]: Start difference. First operand 81 states and 205 transitions. Second operand 21 states.
[2020-10-16 10:53:33,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:33,299 INFO L93 Difference]: Finished difference Result 109 states and 261 transitions.
[2020-10-16 10:53:33,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states.
[2020-10-16 10:53:33,300 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 24
[2020-10-16 10:53:33,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:33,301 INFO L225 Difference]: With dead ends: 109
[2020-10-16 10:53:33,301 INFO L226 Difference]: Without dead ends: 103
[2020-10-16 10:53:33,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=545, Invalid=1525, Unknown=0, NotChecked=0, Total=2070
[2020-10-16 10:53:33,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states.
[2020-10-16 10:53:33,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 80.
[2020-10-16 10:53:33,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states.
[2020-10-16 10:53:33,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 203 transitions.
[2020-10-16 10:53:33,304 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 203 transitions. Word has length 24
[2020-10-16 10:53:33,304 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:33,304 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 203 transitions.
[2020-10-16 10:53:33,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states.
[2020-10-16 10:53:33,304 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 203 transitions.
[2020-10-16 10:53:33,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2020-10-16 10:53:33,305 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:33,305 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:33,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149,146 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:33,505 INFO L429 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:33,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:33,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1015641916, now seen corresponding path program 149 times
[2020-10-16 10:53:33,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:33,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960069741]
[2020-10-16 10:53:33,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:33,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:33,725 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:33,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960069741]
[2020-10-16 10:53:33,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020742638]
[2020-10-16 10:53:33,726 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:33,774 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s)
[2020-10-16 10:53:33,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:53:33,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjunts are in the unsatisfiable core
[2020-10-16 10:53:33,775 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:33,797 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:33,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:33,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18
[2020-10-16 10:53:33,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879584751]
[2020-10-16 10:53:33,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states
[2020-10-16 10:53:33,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:33,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2020-10-16 10:53:33,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380
[2020-10-16 10:53:33,798 INFO L87 Difference]: Start difference. First operand 80 states and 203 transitions. Second operand 20 states.
[2020-10-16 10:53:34,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:34,515 INFO L93 Difference]: Finished difference Result 106 states and 255 transitions.
[2020-10-16 10:53:34,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states.
[2020-10-16 10:53:34,516 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 24
[2020-10-16 10:53:34,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:34,516 INFO L225 Difference]: With dead ends: 106
[2020-10-16 10:53:34,516 INFO L226 Difference]: Without dead ends: 100
[2020-10-16 10:53:34,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=537, Invalid=1443, Unknown=0, NotChecked=0, Total=1980
[2020-10-16 10:53:34,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states.
[2020-10-16 10:53:34,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 81.
[2020-10-16 10:53:34,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states.
[2020-10-16 10:53:34,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 205 transitions.
[2020-10-16 10:53:34,519 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 205 transitions. Word has length 24
[2020-10-16 10:53:34,519 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:34,519 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 205 transitions.
[2020-10-16 10:53:34,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states.
[2020-10-16 10:53:34,520 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 205 transitions.
[2020-10-16 10:53:34,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2020-10-16 10:53:34,520 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:34,520 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:34,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 147 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable150
[2020-10-16 10:53:34,721 INFO L429 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:34,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:34,722 INFO L82 PathProgramCache]: Analyzing trace with hash -495898840, now seen corresponding path program 150 times
[2020-10-16 10:53:34,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:34,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671971249]
[2020-10-16 10:53:34,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:34,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:34,948 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:34,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671971249]
[2020-10-16 10:53:34,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667133733]
[2020-10-16 10:53:34,949 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:35,000 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s)
[2020-10-16 10:53:35,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:53:35,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjunts are in the unsatisfiable core
[2020-10-16 10:53:35,002 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:35,027 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:53:35,042 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:35,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:35,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19
[2020-10-16 10:53:35,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743474018]
[2020-10-16 10:53:35,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states
[2020-10-16 10:53:35,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:35,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2020-10-16 10:53:35,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420
[2020-10-16 10:53:35,043 INFO L87 Difference]: Start difference. First operand 81 states and 205 transitions. Second operand 21 states.
[2020-10-16 10:53:35,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:35,973 INFO L93 Difference]: Finished difference Result 105 states and 253 transitions.
[2020-10-16 10:53:35,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states.
[2020-10-16 10:53:35,974 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 24
[2020-10-16 10:53:35,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:35,974 INFO L225 Difference]: With dead ends: 105
[2020-10-16 10:53:35,975 INFO L226 Difference]: Without dead ends: 99
[2020-10-16 10:53:35,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=609, Invalid=1647, Unknown=0, NotChecked=0, Total=2256
[2020-10-16 10:53:35,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states.
[2020-10-16 10:53:35,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 80.
[2020-10-16 10:53:35,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states.
[2020-10-16 10:53:35,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 203 transitions.
[2020-10-16 10:53:35,977 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 203 transitions. Word has length 24
[2020-10-16 10:53:35,977 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:35,978 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 203 transitions.
[2020-10-16 10:53:35,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states.
[2020-10-16 10:53:35,978 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 203 transitions.
[2020-10-16 10:53:35,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2020-10-16 10:53:35,978 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:35,978 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:36,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,148 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:36,179 INFO L429 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:36,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:36,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1159412390, now seen corresponding path program 151 times
[2020-10-16 10:53:36,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:36,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209741800]
[2020-10-16 10:53:36,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:36,389 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:36,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209741800]
[2020-10-16 10:53:36,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700242469]
[2020-10-16 10:53:36,389 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:36,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:36,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjunts are in the unsatisfiable core
[2020-10-16 10:53:36,438 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:36,472 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:36,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:36,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18
[2020-10-16 10:53:36,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916631580]
[2020-10-16 10:53:36,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states
[2020-10-16 10:53:36,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:36,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2020-10-16 10:53:36,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380
[2020-10-16 10:53:36,473 INFO L87 Difference]: Start difference. First operand 80 states and 203 transitions. Second operand 20 states.
[2020-10-16 10:53:37,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:37,268 INFO L93 Difference]: Finished difference Result 102 states and 247 transitions.
[2020-10-16 10:53:37,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states.
[2020-10-16 10:53:37,269 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 24
[2020-10-16 10:53:37,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:37,270 INFO L225 Difference]: With dead ends: 102
[2020-10-16 10:53:37,270 INFO L226 Difference]: Without dead ends: 96
[2020-10-16 10:53:37,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=610, Invalid=1552, Unknown=0, NotChecked=0, Total=2162
[2020-10-16 10:53:37,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states.
[2020-10-16 10:53:37,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 81.
[2020-10-16 10:53:37,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states.
[2020-10-16 10:53:37,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 205 transitions.
[2020-10-16 10:53:37,273 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 205 transitions. Word has length 24
[2020-10-16 10:53:37,273 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:37,273 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 205 transitions.
[2020-10-16 10:53:37,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states.
[2020-10-16 10:53:37,274 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 205 transitions.
[2020-10-16 10:53:37,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2020-10-16 10:53:37,274 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:37,274 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:37,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,149 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:37,482 INFO L429 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:37,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:37,482 INFO L82 PathProgramCache]: Analyzing trace with hash -560715254, now seen corresponding path program 152 times
[2020-10-16 10:53:37,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:37,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442502480]
[2020-10-16 10:53:37,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:37,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:37,697 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:37,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442502480]
[2020-10-16 10:53:37,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561697139]
[2020-10-16 10:53:37,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:37,745 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 10:53:37,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:53:37,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjunts are in the unsatisfiable core
[2020-10-16 10:53:37,747 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:37,770 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:53:37,786 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:37,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:37,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19
[2020-10-16 10:53:37,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383875334]
[2020-10-16 10:53:37,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states
[2020-10-16 10:53:37,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:37,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2020-10-16 10:53:37,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420
[2020-10-16 10:53:37,788 INFO L87 Difference]: Start difference. First operand 81 states and 205 transitions. Second operand 21 states.
[2020-10-16 10:53:38,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:38,811 INFO L93 Difference]: Finished difference Result 101 states and 245 transitions.
[2020-10-16 10:53:38,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states.
[2020-10-16 10:53:38,812 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 24
[2020-10-16 10:53:38,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:38,813 INFO L225 Difference]: With dead ends: 101
[2020-10-16 10:53:38,813 INFO L226 Difference]: Without dead ends: 95
[2020-10-16 10:53:38,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=689, Invalid=1761, Unknown=0, NotChecked=0, Total=2450
[2020-10-16 10:53:38,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states.
[2020-10-16 10:53:38,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 80.
[2020-10-16 10:53:38,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states.
[2020-10-16 10:53:38,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 203 transitions.
[2020-10-16 10:53:38,815 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 203 transitions. Word has length 24
[2020-10-16 10:53:38,815 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:38,815 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 203 transitions.
[2020-10-16 10:53:38,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states.
[2020-10-16 10:53:38,815 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 203 transitions.
[2020-10-16 10:53:38,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2020-10-16 10:53:38,816 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:38,816 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:39,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable153
[2020-10-16 10:53:39,017 INFO L429 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:39,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:39,017 INFO L82 PathProgramCache]: Analyzing trace with hash -89719544, now seen corresponding path program 153 times
[2020-10-16 10:53:39,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:39,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081208510]
[2020-10-16 10:53:39,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:39,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:39,197 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:39,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081208510]
[2020-10-16 10:53:39,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263072093]
[2020-10-16 10:53:39,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:39,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s)
[2020-10-16 10:53:39,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:53:39,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjunts are in the unsatisfiable core
[2020-10-16 10:53:39,252 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:39,272 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:39,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:39,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18
[2020-10-16 10:53:39,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777914046]
[2020-10-16 10:53:39,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states
[2020-10-16 10:53:39,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:39,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2020-10-16 10:53:39,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380
[2020-10-16 10:53:39,273 INFO L87 Difference]: Start difference. First operand 80 states and 203 transitions. Second operand 20 states.
[2020-10-16 10:53:40,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:40,130 INFO L93 Difference]: Finished difference Result 98 states and 239 transitions.
[2020-10-16 10:53:40,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states.
[2020-10-16 10:53:40,131 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 24
[2020-10-16 10:53:40,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:40,132 INFO L225 Difference]: With dead ends: 98
[2020-10-16 10:53:40,132 INFO L226 Difference]: Without dead ends: 92
[2020-10-16 10:53:40,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=699, Invalid=1653, Unknown=0, NotChecked=0, Total=2352
[2020-10-16 10:53:40,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states.
[2020-10-16 10:53:40,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 81.
[2020-10-16 10:53:40,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states.
[2020-10-16 10:53:40,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 205 transitions.
[2020-10-16 10:53:40,134 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 205 transitions. Word has length 24
[2020-10-16 10:53:40,135 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:40,135 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 205 transitions.
[2020-10-16 10:53:40,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states.
[2020-10-16 10:53:40,135 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 205 transitions.
[2020-10-16 10:53:40,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2020-10-16 10:53:40,135 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:40,135 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:40,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,151 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:40,336 INFO L429 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:40,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:40,336 INFO L82 PathProgramCache]: Analyzing trace with hash -73632404, now seen corresponding path program 154 times
[2020-10-16 10:53:40,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:40,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451411898]
[2020-10-16 10:53:40,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:40,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:40,542 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:40,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451411898]
[2020-10-16 10:53:40,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092881893]
[2020-10-16 10:53:40,543 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:40,588 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 10:53:40,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:53:40,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjunts are in the unsatisfiable core
[2020-10-16 10:53:40,589 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:40,613 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:53:40,629 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:40,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:40,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19
[2020-10-16 10:53:40,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732532929]
[2020-10-16 10:53:40,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states
[2020-10-16 10:53:40,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:40,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2020-10-16 10:53:40,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420
[2020-10-16 10:53:40,630 INFO L87 Difference]: Start difference. First operand 81 states and 205 transitions. Second operand 21 states.
[2020-10-16 10:53:41,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:41,763 INFO L93 Difference]: Finished difference Result 97 states and 237 transitions.
[2020-10-16 10:53:41,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states.
[2020-10-16 10:53:41,764 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 24
[2020-10-16 10:53:41,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:41,765 INFO L225 Difference]: With dead ends: 97
[2020-10-16 10:53:41,765 INFO L226 Difference]: Without dead ends: 91
[2020-10-16 10:53:41,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=785, Invalid=1867, Unknown=0, NotChecked=0, Total=2652
[2020-10-16 10:53:41,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states.
[2020-10-16 10:53:41,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 80.
[2020-10-16 10:53:41,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states.
[2020-10-16 10:53:41,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 203 transitions.
[2020-10-16 10:53:41,767 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 203 transitions. Word has length 24
[2020-10-16 10:53:41,768 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:41,768 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 203 transitions.
[2020-10-16 10:53:41,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states.
[2020-10-16 10:53:41,768 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 203 transitions.
[2020-10-16 10:53:41,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2020-10-16 10:53:41,768 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:41,768 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:41,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155
[2020-10-16 10:53:41,969 INFO L429 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:41,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:41,969 INFO L82 PathProgramCache]: Analyzing trace with hash -73142294, now seen corresponding path program 155 times
[2020-10-16 10:53:41,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:41,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147703376]
[2020-10-16 10:53:41,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:42,166 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:42,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147703376]
[2020-10-16 10:53:42,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433470726]
[2020-10-16 10:53:42,167 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:42,217 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s)
[2020-10-16 10:53:42,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:53:42,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjunts are in the unsatisfiable core
[2020-10-16 10:53:42,219 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:42,240 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:42,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:42,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18
[2020-10-16 10:53:42,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212835025]
[2020-10-16 10:53:42,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states
[2020-10-16 10:53:42,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:42,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2020-10-16 10:53:42,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380
[2020-10-16 10:53:42,241 INFO L87 Difference]: Start difference. First operand 80 states and 203 transitions. Second operand 20 states.
[2020-10-16 10:53:43,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:43,147 INFO L93 Difference]: Finished difference Result 113 states and 277 transitions.
[2020-10-16 10:53:43,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states.
[2020-10-16 10:53:43,147 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 24
[2020-10-16 10:53:43,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:43,148 INFO L225 Difference]: With dead ends: 113
[2020-10-16 10:53:43,148 INFO L226 Difference]: Without dead ends: 107
[2020-10-16 10:53:43,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 647 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=804, Invalid=1746, Unknown=0, NotChecked=0, Total=2550
[2020-10-16 10:53:43,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states.
[2020-10-16 10:53:43,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 84.
[2020-10-16 10:53:43,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states.
[2020-10-16 10:53:43,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 217 transitions.
[2020-10-16 10:53:43,150 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 217 transitions. Word has length 24
[2020-10-16 10:53:43,151 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:43,151 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 217 transitions.
[2020-10-16 10:53:43,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states.
[2020-10-16 10:53:43,151 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 217 transitions.
[2020-10-16 10:53:43,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2020-10-16 10:53:43,151 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:43,151 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:43,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 153 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156
[2020-10-16 10:53:43,352 INFO L429 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:43,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:43,353 INFO L82 PathProgramCache]: Analyzing trace with hash -73125554, now seen corresponding path program 156 times
[2020-10-16 10:53:43,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:43,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855011764]
[2020-10-16 10:53:43,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:43,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:43,567 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:43,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855011764]
[2020-10-16 10:53:43,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369439546]
[2020-10-16 10:53:43,568 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:43,619 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s)
[2020-10-16 10:53:43,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:53:43,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 21 conjunts are in the unsatisfiable core
[2020-10-16 10:53:43,621 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:43,666 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:43,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:43,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19
[2020-10-16 10:53:43,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106399335]
[2020-10-16 10:53:43,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states
[2020-10-16 10:53:43,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:43,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2020-10-16 10:53:43,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420
[2020-10-16 10:53:43,667 INFO L87 Difference]: Start difference. First operand 84 states and 217 transitions. Second operand 21 states.
[2020-10-16 10:53:44,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:44,686 INFO L93 Difference]: Finished difference Result 92 states and 229 transitions.
[2020-10-16 10:53:44,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states.
[2020-10-16 10:53:44,687 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 24
[2020-10-16 10:53:44,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:44,687 INFO L225 Difference]: With dead ends: 92
[2020-10-16 10:53:44,688 INFO L226 Difference]: Without dead ends: 84
[2020-10-16 10:53:44,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=746, Invalid=1906, Unknown=0, NotChecked=0, Total=2652
[2020-10-16 10:53:44,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states.
[2020-10-16 10:53:44,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 61.
[2020-10-16 10:53:44,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states.
[2020-10-16 10:53:44,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 148 transitions.
[2020-10-16 10:53:44,690 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 148 transitions. Word has length 24
[2020-10-16 10:53:44,690 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:44,691 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 148 transitions.
[2020-10-16 10:53:44,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states.
[2020-10-16 10:53:44,691 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 148 transitions.
[2020-10-16 10:53:44,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2020-10-16 10:53:44,691 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:44,691 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:44,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 154 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157
[2020-10-16 10:53:44,892 INFO L429 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:44,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:44,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1614805552, now seen corresponding path program 157 times
[2020-10-16 10:53:44,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:44,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155008035]
[2020-10-16 10:53:44,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:44,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:45,099 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:45,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155008035]
[2020-10-16 10:53:45,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864916602]
[2020-10-16 10:53:45,100 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:45,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:45,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjunts are in the unsatisfiable core
[2020-10-16 10:53:45,146 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:45,169 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-10-16 10:53:45,190 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:45,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:45,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19
[2020-10-16 10:53:45,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339442844]
[2020-10-16 10:53:45,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states
[2020-10-16 10:53:45,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:45,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2020-10-16 10:53:45,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420
[2020-10-16 10:53:45,192 INFO L87 Difference]: Start difference. First operand 61 states and 148 transitions. Second operand 21 states.
[2020-10-16 10:53:46,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:46,287 INFO L93 Difference]: Finished difference Result 108 states and 263 transitions.
[2020-10-16 10:53:46,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states.
[2020-10-16 10:53:46,288 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 24
[2020-10-16 10:53:46,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:46,288 INFO L225 Difference]: With dead ends: 108
[2020-10-16 10:53:46,288 INFO L226 Difference]: Without dead ends: 103
[2020-10-16 10:53:46,289 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=938, Invalid=1924, Unknown=0, NotChecked=0, Total=2862
[2020-10-16 10:53:46,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states.
[2020-10-16 10:53:46,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 82.
[2020-10-16 10:53:46,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states.
[2020-10-16 10:53:46,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 209 transitions.
[2020-10-16 10:53:46,291 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 209 transitions. Word has length 24
[2020-10-16 10:53:46,291 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:46,291 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 209 transitions.
[2020-10-16 10:53:46,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states.
[2020-10-16 10:53:46,291 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 209 transitions.
[2020-10-16 10:53:46,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2020-10-16 10:53:46,292 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:46,292 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:46,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 155 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158
[2020-10-16 10:53:46,493 INFO L429 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:46,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:46,493 INFO L82 PathProgramCache]: Analyzing trace with hash 2028091429, now seen corresponding path program 158 times
[2020-10-16 10:53:46,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:46,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608381303]
[2020-10-16 10:53:46,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:46,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:46,716 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:46,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608381303]
[2020-10-16 10:53:46,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517514694]
[2020-10-16 10:53:46,717 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:46,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 10:53:46,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:53:46,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjunts are in the unsatisfiable core
[2020-10-16 10:53:46,766 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:46,798 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-10-16 10:53:46,819 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:46,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:46,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20
[2020-10-16 10:53:46,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341297958]
[2020-10-16 10:53:46,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states
[2020-10-16 10:53:46,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:46,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2020-10-16 10:53:46,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462
[2020-10-16 10:53:46,821 INFO L87 Difference]: Start difference. First operand 82 states and 209 transitions. Second operand 22 states.
[2020-10-16 10:53:48,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:48,009 INFO L93 Difference]: Finished difference Result 90 states and 229 transitions.
[2020-10-16 10:53:48,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states.
[2020-10-16 10:53:48,010 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 25
[2020-10-16 10:53:48,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:48,011 INFO L225 Difference]: With dead ends: 90
[2020-10-16 10:53:48,011 INFO L226 Difference]: Without dead ends: 85
[2020-10-16 10:53:48,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=955, Invalid=2015, Unknown=0, NotChecked=0, Total=2970
[2020-10-16 10:53:48,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states.
[2020-10-16 10:53:48,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 62.
[2020-10-16 10:53:48,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states.
[2020-10-16 10:53:48,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 152 transitions.
[2020-10-16 10:53:48,013 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 152 transitions. Word has length 25
[2020-10-16 10:53:48,013 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:48,013 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 152 transitions.
[2020-10-16 10:53:48,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states.
[2020-10-16 10:53:48,013 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 152 transitions.
[2020-10-16 10:53:48,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2020-10-16 10:53:48,014 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:48,014 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:48,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159,156 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:48,215 INFO L429 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:48,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:48,215 INFO L82 PathProgramCache]: Analyzing trace with hash 674366672, now seen corresponding path program 159 times
[2020-10-16 10:53:48,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:48,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863359899]
[2020-10-16 10:53:48,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:48,510 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:48,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863359899]
[2020-10-16 10:53:48,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909166714]
[2020-10-16 10:53:48,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:48,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s)
[2020-10-16 10:53:48,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:53:48,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjunts are in the unsatisfiable core
[2020-10-16 10:53:48,567 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:48,577 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:48,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:48,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19
[2020-10-16 10:53:48,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132594190]
[2020-10-16 10:53:48,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states
[2020-10-16 10:53:48,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:48,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2020-10-16 10:53:48,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420
[2020-10-16 10:53:48,578 INFO L87 Difference]: Start difference. First operand 62 states and 152 transitions. Second operand 21 states.
[2020-10-16 10:53:49,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:49,034 INFO L93 Difference]: Finished difference Result 96 states and 223 transitions.
[2020-10-16 10:53:49,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2020-10-16 10:53:49,035 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 25
[2020-10-16 10:53:49,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:49,035 INFO L225 Difference]: With dead ends: 96
[2020-10-16 10:53:49,036 INFO L226 Difference]: Without dead ends: 90
[2020-10-16 10:53:49,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=453, Invalid=953, Unknown=0, NotChecked=0, Total=1406
[2020-10-16 10:53:49,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states.
[2020-10-16 10:53:49,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 70.
[2020-10-16 10:53:49,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states.
[2020-10-16 10:53:49,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 171 transitions.
[2020-10-16 10:53:49,038 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 171 transitions. Word has length 25
[2020-10-16 10:53:49,038 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:49,038 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 171 transitions.
[2020-10-16 10:53:49,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states.
[2020-10-16 10:53:49,039 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 171 transitions.
[2020-10-16 10:53:49,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2020-10-16 10:53:49,039 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:49,039 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:49,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160,157 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:49,240 INFO L429 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:49,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:49,240 INFO L82 PathProgramCache]: Analyzing trace with hash -873791948, now seen corresponding path program 160 times
[2020-10-16 10:53:49,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:49,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366838554]
[2020-10-16 10:53:49,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:49,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:49,539 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:49,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366838554]
[2020-10-16 10:53:49,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441358405]
[2020-10-16 10:53:49,540 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:49,589 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 10:53:49,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:53:49,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjunts are in the unsatisfiable core
[2020-10-16 10:53:49,591 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:49,613 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:53:49,624 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:49,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:49,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20
[2020-10-16 10:53:49,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463857490]
[2020-10-16 10:53:49,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states
[2020-10-16 10:53:49,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:49,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2020-10-16 10:53:49,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462
[2020-10-16 10:53:49,626 INFO L87 Difference]: Start difference. First operand 70 states and 171 transitions. Second operand 22 states.
[2020-10-16 10:53:50,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:50,168 INFO L93 Difference]: Finished difference Result 114 states and 259 transitions.
[2020-10-16 10:53:50,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states.
[2020-10-16 10:53:50,169 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 25
[2020-10-16 10:53:50,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:50,169 INFO L225 Difference]: With dead ends: 114
[2020-10-16 10:53:50,170 INFO L226 Difference]: Without dead ends: 108
[2020-10-16 10:53:50,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=462, Invalid=1098, Unknown=0, NotChecked=0, Total=1560
[2020-10-16 10:53:50,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states.
[2020-10-16 10:53:50,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 68.
[2020-10-16 10:53:50,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states.
[2020-10-16 10:53:50,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 167 transitions.
[2020-10-16 10:53:50,172 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 167 transitions. Word has length 25
[2020-10-16 10:53:50,172 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:50,172 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 167 transitions.
[2020-10-16 10:53:50,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states.
[2020-10-16 10:53:50,172 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 167 transitions.
[2020-10-16 10:53:50,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2020-10-16 10:53:50,172 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:50,173 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:50,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161,158 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:50,373 INFO L429 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:50,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:50,374 INFO L82 PathProgramCache]: Analyzing trace with hash 2119386162, now seen corresponding path program 161 times
[2020-10-16 10:53:50,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:50,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303258180]
[2020-10-16 10:53:50,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:50,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:50,675 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:50,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303258180]
[2020-10-16 10:53:50,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483319543]
[2020-10-16 10:53:50,676 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:50,727 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s)
[2020-10-16 10:53:50,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:53:50,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjunts are in the unsatisfiable core
[2020-10-16 10:53:50,729 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:50,740 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:50,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:50,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19
[2020-10-16 10:53:50,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204601117]
[2020-10-16 10:53:50,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states
[2020-10-16 10:53:50,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:50,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2020-10-16 10:53:50,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420
[2020-10-16 10:53:50,741 INFO L87 Difference]: Start difference. First operand 68 states and 167 transitions. Second operand 21 states.
[2020-10-16 10:53:51,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:51,322 INFO L93 Difference]: Finished difference Result 115 states and 263 transitions.
[2020-10-16 10:53:51,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states.
[2020-10-16 10:53:51,323 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 25
[2020-10-16 10:53:51,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:51,323 INFO L225 Difference]: With dead ends: 115
[2020-10-16 10:53:51,323 INFO L226 Difference]: Without dead ends: 109
[2020-10-16 10:53:51,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=466, Invalid=1174, Unknown=0, NotChecked=0, Total=1640
[2020-10-16 10:53:51,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states.
[2020-10-16 10:53:51,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 71.
[2020-10-16 10:53:51,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states.
[2020-10-16 10:53:51,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 175 transitions.
[2020-10-16 10:53:51,326 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 175 transitions. Word has length 25
[2020-10-16 10:53:51,326 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:51,326 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 175 transitions.
[2020-10-16 10:53:51,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states.
[2020-10-16 10:53:51,326 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 175 transitions.
[2020-10-16 10:53:51,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2020-10-16 10:53:51,326 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:51,326 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:51,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,159 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:51,527 INFO L429 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:51,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:51,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1308837526, now seen corresponding path program 162 times
[2020-10-16 10:53:51,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:51,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963936375]
[2020-10-16 10:53:51,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:51,830 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:51,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963936375]
[2020-10-16 10:53:51,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888812831]
[2020-10-16 10:53:51,831 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:51,886 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s)
[2020-10-16 10:53:51,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:53:51,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjunts are in the unsatisfiable core
[2020-10-16 10:53:51,888 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:51,913 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:53:51,927 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:51,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:51,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20
[2020-10-16 10:53:51,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213659587]
[2020-10-16 10:53:51,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states
[2020-10-16 10:53:51,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:51,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2020-10-16 10:53:51,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462
[2020-10-16 10:53:51,928 INFO L87 Difference]: Start difference. First operand 71 states and 175 transitions. Second operand 22 states.
[2020-10-16 10:53:52,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:52,565 INFO L93 Difference]: Finished difference Result 129 states and 291 transitions.
[2020-10-16 10:53:52,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states.
[2020-10-16 10:53:52,565 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 25
[2020-10-16 10:53:52,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:52,566 INFO L225 Difference]: With dead ends: 129
[2020-10-16 10:53:52,566 INFO L226 Difference]: Without dead ends: 123
[2020-10-16 10:53:52,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=500, Invalid=1306, Unknown=0, NotChecked=0, Total=1806
[2020-10-16 10:53:52,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states.
[2020-10-16 10:53:52,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 70.
[2020-10-16 10:53:52,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states.
[2020-10-16 10:53:52,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 173 transitions.
[2020-10-16 10:53:52,569 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 173 transitions. Word has length 25
[2020-10-16 10:53:52,570 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:52,570 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 173 transitions.
[2020-10-16 10:53:52,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states.
[2020-10-16 10:53:52,570 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 173 transitions.
[2020-10-16 10:53:52,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2020-10-16 10:53:52,570 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:52,570 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:52,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,160 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:52,779 INFO L429 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:52,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:52,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1361114132, now seen corresponding path program 163 times
[2020-10-16 10:53:52,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:52,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857284202]
[2020-10-16 10:53:52,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:52,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:53,054 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:53,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857284202]
[2020-10-16 10:53:53,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237980937]
[2020-10-16 10:53:53,054 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:53,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:53,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjunts are in the unsatisfiable core
[2020-10-16 10:53:53,102 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:53,115 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:53,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:53,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19
[2020-10-16 10:53:53,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801714882]
[2020-10-16 10:53:53,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states
[2020-10-16 10:53:53,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:53,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2020-10-16 10:53:53,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420
[2020-10-16 10:53:53,116 INFO L87 Difference]: Start difference. First operand 70 states and 173 transitions. Second operand 21 states.
[2020-10-16 10:53:53,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:53,744 INFO L93 Difference]: Finished difference Result 129 states and 293 transitions.
[2020-10-16 10:53:53,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states.
[2020-10-16 10:53:53,745 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 25
[2020-10-16 10:53:53,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:53,746 INFO L225 Difference]: With dead ends: 129
[2020-10-16 10:53:53,746 INFO L226 Difference]: Without dead ends: 123
[2020-10-16 10:53:53,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=518, Invalid=1374, Unknown=0, NotChecked=0, Total=1892
[2020-10-16 10:53:53,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states.
[2020-10-16 10:53:53,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 73.
[2020-10-16 10:53:53,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states.
[2020-10-16 10:53:53,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 181 transitions.
[2020-10-16 10:53:53,748 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 181 transitions. Word has length 25
[2020-10-16 10:53:53,748 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:53,748 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 181 transitions.
[2020-10-16 10:53:53,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states.
[2020-10-16 10:53:53,748 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 181 transitions.
[2020-10-16 10:53:53,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2020-10-16 10:53:53,749 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:53,749 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:53,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,161 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:53,950 INFO L429 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:53,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:53,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1057603720, now seen corresponding path program 164 times
[2020-10-16 10:53:53,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:53,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144947056]
[2020-10-16 10:53:53,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:54,229 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:54,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144947056]
[2020-10-16 10:53:54,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380733306]
[2020-10-16 10:53:54,230 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:54,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 10:53:54,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:53:54,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjunts are in the unsatisfiable core
[2020-10-16 10:53:54,281 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:54,306 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:53:54,320 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:54,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:54,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20
[2020-10-16 10:53:54,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617614433]
[2020-10-16 10:53:54,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states
[2020-10-16 10:53:54,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:54,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2020-10-16 10:53:54,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462
[2020-10-16 10:53:54,322 INFO L87 Difference]: Start difference. First operand 73 states and 181 transitions. Second operand 22 states.
[2020-10-16 10:53:55,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:55,034 INFO L93 Difference]: Finished difference Result 126 states and 287 transitions.
[2020-10-16 10:53:55,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2020-10-16 10:53:55,034 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 25
[2020-10-16 10:53:55,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:55,035 INFO L225 Difference]: With dead ends: 126
[2020-10-16 10:53:55,035 INFO L226 Difference]: Without dead ends: 120
[2020-10-16 10:53:55,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=523, Invalid=1457, Unknown=0, NotChecked=0, Total=1980
[2020-10-16 10:53:55,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states.
[2020-10-16 10:53:55,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 72.
[2020-10-16 10:53:55,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states.
[2020-10-16 10:53:55,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 179 transitions.
[2020-10-16 10:53:55,037 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 179 transitions. Word has length 25
[2020-10-16 10:53:55,038 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:55,038 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 179 transitions.
[2020-10-16 10:53:55,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states.
[2020-10-16 10:53:55,038 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 179 transitions.
[2020-10-16 10:53:55,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2020-10-16 10:53:55,039 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:55,039 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:55,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,162 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:55,241 INFO L429 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:55,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:55,241 INFO L82 PathProgramCache]: Analyzing trace with hash -369281930, now seen corresponding path program 165 times
[2020-10-16 10:53:55,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:55,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923984189]
[2020-10-16 10:53:55,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:55,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:55,507 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:55,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923984189]
[2020-10-16 10:53:55,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173750684]
[2020-10-16 10:53:55,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:55,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s)
[2020-10-16 10:53:55,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:53:55,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjunts are in the unsatisfiable core
[2020-10-16 10:53:55,562 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:55,583 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:55,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:55,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19
[2020-10-16 10:53:55,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356619668]
[2020-10-16 10:53:55,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states
[2020-10-16 10:53:55,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:55,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2020-10-16 10:53:55,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420
[2020-10-16 10:53:55,585 INFO L87 Difference]: Start difference. First operand 72 states and 179 transitions. Second operand 21 states.
[2020-10-16 10:53:56,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:56,296 INFO L93 Difference]: Finished difference Result 127 states and 291 transitions.
[2020-10-16 10:53:56,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states.
[2020-10-16 10:53:56,296 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 25
[2020-10-16 10:53:56,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:56,297 INFO L225 Difference]: With dead ends: 127
[2020-10-16 10:53:56,297 INFO L226 Difference]: Without dead ends: 121
[2020-10-16 10:53:56,297 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=556, Invalid=1514, Unknown=0, NotChecked=0, Total=2070
[2020-10-16 10:53:56,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states.
[2020-10-16 10:53:56,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 75.
[2020-10-16 10:53:56,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states.
[2020-10-16 10:53:56,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 187 transitions.
[2020-10-16 10:53:56,299 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 187 transitions. Word has length 25
[2020-10-16 10:53:56,299 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:56,300 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 187 transitions.
[2020-10-16 10:53:56,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states.
[2020-10-16 10:53:56,300 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 187 transitions.
[2020-10-16 10:53:56,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2020-10-16 10:53:56,300 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:56,300 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:56,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 163 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166
[2020-10-16 10:53:56,501 INFO L429 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:56,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:56,501 INFO L82 PathProgramCache]: Analyzing trace with hash 615909594, now seen corresponding path program 166 times
[2020-10-16 10:53:56,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:56,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405050485]
[2020-10-16 10:53:56,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:56,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:56,764 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:56,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405050485]
[2020-10-16 10:53:56,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002936283]
[2020-10-16 10:53:56,765 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:56,817 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 10:53:56,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:53:56,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjunts are in the unsatisfiable core
[2020-10-16 10:53:56,818 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:56,842 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:53:56,856 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:56,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:56,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20
[2020-10-16 10:53:56,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178963403]
[2020-10-16 10:53:56,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states
[2020-10-16 10:53:56,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:56,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2020-10-16 10:53:56,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462
[2020-10-16 10:53:56,857 INFO L87 Difference]: Start difference. First operand 75 states and 187 transitions. Second operand 22 states.
[2020-10-16 10:53:57,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:57,675 INFO L93 Difference]: Finished difference Result 124 states and 285 transitions.
[2020-10-16 10:53:57,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states.
[2020-10-16 10:53:57,675 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 25
[2020-10-16 10:53:57,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:57,676 INFO L225 Difference]: With dead ends: 124
[2020-10-16 10:53:57,676 INFO L226 Difference]: Without dead ends: 118
[2020-10-16 10:53:57,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=562, Invalid=1600, Unknown=0, NotChecked=0, Total=2162
[2020-10-16 10:53:57,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states.
[2020-10-16 10:53:57,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 74.
[2020-10-16 10:53:57,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states.
[2020-10-16 10:53:57,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 185 transitions.
[2020-10-16 10:53:57,678 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 185 transitions. Word has length 25
[2020-10-16 10:53:57,678 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:57,678 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 185 transitions.
[2020-10-16 10:53:57,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states.
[2020-10-16 10:53:57,678 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 185 transitions.
[2020-10-16 10:53:57,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2020-10-16 10:53:57,679 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:57,679 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:57,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 164 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167
[2020-10-16 10:53:57,879 INFO L429 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:57,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:57,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1001249448, now seen corresponding path program 167 times
[2020-10-16 10:53:57,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:57,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74242060]
[2020-10-16 10:53:57,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:57,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:58,128 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:58,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74242060]
[2020-10-16 10:53:58,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970512187]
[2020-10-16 10:53:58,128 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:58,183 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s)
[2020-10-16 10:53:58,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:53:58,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjunts are in the unsatisfiable core
[2020-10-16 10:53:58,186 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:58,202 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:58,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:58,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19
[2020-10-16 10:53:58,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083715114]
[2020-10-16 10:53:58,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states
[2020-10-16 10:53:58,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:58,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2020-10-16 10:53:58,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420
[2020-10-16 10:53:58,204 INFO L87 Difference]: Start difference. First operand 74 states and 185 transitions. Second operand 21 states.
[2020-10-16 10:53:58,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:53:58,986 INFO L93 Difference]: Finished difference Result 125 states and 289 transitions.
[2020-10-16 10:53:58,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states.
[2020-10-16 10:53:58,987 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 25
[2020-10-16 10:53:58,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:53:58,988 INFO L225 Difference]: With dead ends: 125
[2020-10-16 10:53:58,988 INFO L226 Difference]: Without dead ends: 119
[2020-10-16 10:53:58,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=610, Invalid=1646, Unknown=0, NotChecked=0, Total=2256
[2020-10-16 10:53:58,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states.
[2020-10-16 10:53:58,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 77.
[2020-10-16 10:53:58,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states.
[2020-10-16 10:53:58,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 193 transitions.
[2020-10-16 10:53:58,991 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 193 transitions. Word has length 25
[2020-10-16 10:53:58,991 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:53:58,991 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 193 transitions.
[2020-10-16 10:53:58,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states.
[2020-10-16 10:53:58,991 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 193 transitions.
[2020-10-16 10:53:58,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2020-10-16 10:53:58,992 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:53:58,992 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:53:59,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 165 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168
[2020-10-16 10:53:59,192 INFO L429 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:53:59,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:53:59,193 INFO L82 PathProgramCache]: Analyzing trace with hash 255640252, now seen corresponding path program 168 times
[2020-10-16 10:53:59,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:53:59,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088712142]
[2020-10-16 10:53:59,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:53:59,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:53:59,446 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:59,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088712142]
[2020-10-16 10:53:59,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728359130]
[2020-10-16 10:53:59,446 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:53:59,505 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s)
[2020-10-16 10:53:59,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:53:59,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjunts are in the unsatisfiable core
[2020-10-16 10:53:59,507 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:53:59,532 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:53:59,548 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:53:59,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:53:59,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20
[2020-10-16 10:53:59,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639638072]
[2020-10-16 10:53:59,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states
[2020-10-16 10:53:59,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:53:59,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2020-10-16 10:53:59,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462
[2020-10-16 10:53:59,549 INFO L87 Difference]: Start difference. First operand 77 states and 193 transitions. Second operand 22 states.
[2020-10-16 10:54:00,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:54:00,467 INFO L93 Difference]: Finished difference Result 122 states and 283 transitions.
[2020-10-16 10:54:00,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states.
[2020-10-16 10:54:00,468 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 25
[2020-10-16 10:54:00,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:54:00,468 INFO L225 Difference]: With dead ends: 122
[2020-10-16 10:54:00,469 INFO L226 Difference]: Without dead ends: 116
[2020-10-16 10:54:00,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=617, Invalid=1735, Unknown=0, NotChecked=0, Total=2352
[2020-10-16 10:54:00,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states.
[2020-10-16 10:54:00,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 76.
[2020-10-16 10:54:00,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states.
[2020-10-16 10:54:00,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 191 transitions.
[2020-10-16 10:54:00,471 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 191 transitions. Word has length 25
[2020-10-16 10:54:00,471 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:54:00,471 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 191 transitions.
[2020-10-16 10:54:00,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states.
[2020-10-16 10:54:00,471 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 191 transitions.
[2020-10-16 10:54:00,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2020-10-16 10:54:00,472 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:54:00,472 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:54:00,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 166 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169
[2020-10-16 10:54:00,673 INFO L429 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:54:00,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:54:00,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1871832762, now seen corresponding path program 169 times
[2020-10-16 10:54:00,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:54:00,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631455342]
[2020-10-16 10:54:00,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:54:00,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:54:00,922 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:00,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631455342]
[2020-10-16 10:54:00,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434944796]
[2020-10-16 10:54:00,923 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:00,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:54:00,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjunts are in the unsatisfiable core
[2020-10-16 10:54:00,969 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:54:00,988 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:00,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:54:00,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19
[2020-10-16 10:54:00,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744295813]
[2020-10-16 10:54:00,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states
[2020-10-16 10:54:00,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:54:00,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2020-10-16 10:54:00,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420
[2020-10-16 10:54:00,989 INFO L87 Difference]: Start difference. First operand 76 states and 191 transitions. Second operand 21 states.
[2020-10-16 10:54:01,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:54:01,824 INFO L93 Difference]: Finished difference Result 123 states and 287 transitions.
[2020-10-16 10:54:01,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states.
[2020-10-16 10:54:01,825 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 25
[2020-10-16 10:54:01,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:54:01,826 INFO L225 Difference]: With dead ends: 123
[2020-10-16 10:54:01,826 INFO L226 Difference]: Without dead ends: 117
[2020-10-16 10:54:01,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=680, Invalid=1770, Unknown=0, NotChecked=0, Total=2450
[2020-10-16 10:54:01,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states.
[2020-10-16 10:54:01,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 79.
[2020-10-16 10:54:01,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states.
[2020-10-16 10:54:01,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 199 transitions.
[2020-10-16 10:54:01,828 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 199 transitions. Word has length 25
[2020-10-16 10:54:01,828 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:54:01,829 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 199 transitions.
[2020-10-16 10:54:01,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states.
[2020-10-16 10:54:01,829 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 199 transitions.
[2020-10-16 10:54:01,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2020-10-16 10:54:01,829 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:54:01,829 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:54:02,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170,167 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:02,030 INFO L429 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:54:02,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:54:02,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1903391458, now seen corresponding path program 170 times
[2020-10-16 10:54:02,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:54:02,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988283855]
[2020-10-16 10:54:02,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:54:02,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:54:02,288 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:02,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988283855]
[2020-10-16 10:54:02,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569925137]
[2020-10-16 10:54:02,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:02,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 10:54:02,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:54:02,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjunts are in the unsatisfiable core
[2020-10-16 10:54:02,339 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:54:02,363 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:54:02,380 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:02,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:54:02,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20
[2020-10-16 10:54:02,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733429590]
[2020-10-16 10:54:02,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states
[2020-10-16 10:54:02,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:54:02,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2020-10-16 10:54:02,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462
[2020-10-16 10:54:02,382 INFO L87 Difference]: Start difference. First operand 79 states and 199 transitions. Second operand 22 states.
[2020-10-16 10:54:03,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:54:03,393 INFO L93 Difference]: Finished difference Result 120 states and 281 transitions.
[2020-10-16 10:54:03,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states.
[2020-10-16 10:54:03,394 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 25
[2020-10-16 10:54:03,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:54:03,394 INFO L225 Difference]: With dead ends: 120
[2020-10-16 10:54:03,395 INFO L226 Difference]: Without dead ends: 114
[2020-10-16 10:54:03,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=688, Invalid=1862, Unknown=0, NotChecked=0, Total=2550
[2020-10-16 10:54:03,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states.
[2020-10-16 10:54:03,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 78.
[2020-10-16 10:54:03,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states.
[2020-10-16 10:54:03,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 197 transitions.
[2020-10-16 10:54:03,396 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 197 transitions. Word has length 25
[2020-10-16 10:54:03,397 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:54:03,397 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 197 transitions.
[2020-10-16 10:54:03,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states.
[2020-10-16 10:54:03,397 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 197 transitions.
[2020-10-16 10:54:03,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2020-10-16 10:54:03,397 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:54:03,398 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:54:03,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171,168 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:03,598 INFO L429 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:54:03,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:54:03,599 INFO L82 PathProgramCache]: Analyzing trace with hash -248080228, now seen corresponding path program 171 times
[2020-10-16 10:54:03,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:54:03,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272305031]
[2020-10-16 10:54:03,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:54:03,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:54:03,843 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:03,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272305031]
[2020-10-16 10:54:03,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031266297]
[2020-10-16 10:54:03,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:03,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s)
[2020-10-16 10:54:03,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:54:03,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjunts are in the unsatisfiable core
[2020-10-16 10:54:03,896 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:54:03,916 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:03,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:54:03,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19
[2020-10-16 10:54:03,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307478119]
[2020-10-16 10:54:03,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states
[2020-10-16 10:54:03,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:54:03,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2020-10-16 10:54:03,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420
[2020-10-16 10:54:03,918 INFO L87 Difference]: Start difference. First operand 78 states and 197 transitions. Second operand 21 states.
[2020-10-16 10:54:04,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:54:04,823 INFO L93 Difference]: Finished difference Result 121 states and 285 transitions.
[2020-10-16 10:54:04,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states.
[2020-10-16 10:54:04,824 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 25
[2020-10-16 10:54:04,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:54:04,824 INFO L225 Difference]: With dead ends: 121
[2020-10-16 10:54:04,824 INFO L226 Difference]: Without dead ends: 115
[2020-10-16 10:54:04,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 691 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=766, Invalid=1886, Unknown=0, NotChecked=0, Total=2652
[2020-10-16 10:54:04,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states.
[2020-10-16 10:54:04,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 81.
[2020-10-16 10:54:04,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states.
[2020-10-16 10:54:04,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 205 transitions.
[2020-10-16 10:54:04,827 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 205 transitions. Word has length 25
[2020-10-16 10:54:04,827 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:54:04,827 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 205 transitions.
[2020-10-16 10:54:04,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states.
[2020-10-16 10:54:04,827 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 205 transitions.
[2020-10-16 10:54:04,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2020-10-16 10:54:04,828 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:54:04,828 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:54:05,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 169 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable172
[2020-10-16 10:54:05,029 INFO L429 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:54:05,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:54:05,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1968207872, now seen corresponding path program 172 times
[2020-10-16 10:54:05,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:54:05,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399825782]
[2020-10-16 10:54:05,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:54:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:54:05,277 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:05,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399825782]
[2020-10-16 10:54:05,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746479985]
[2020-10-16 10:54:05,278 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:05,326 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 10:54:05,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:54:05,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjunts are in the unsatisfiable core
[2020-10-16 10:54:05,328 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:54:05,352 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:54:05,370 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:05,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:54:05,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20
[2020-10-16 10:54:05,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074809314]
[2020-10-16 10:54:05,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states
[2020-10-16 10:54:05,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:54:05,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2020-10-16 10:54:05,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462
[2020-10-16 10:54:05,372 INFO L87 Difference]: Start difference. First operand 81 states and 205 transitions. Second operand 22 states.
[2020-10-16 10:54:06,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:54:06,559 INFO L93 Difference]: Finished difference Result 118 states and 279 transitions.
[2020-10-16 10:54:06,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states.
[2020-10-16 10:54:06,559 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 25
[2020-10-16 10:54:06,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:54:06,560 INFO L225 Difference]: With dead ends: 118
[2020-10-16 10:54:06,560 INFO L226 Difference]: Without dead ends: 112
[2020-10-16 10:54:06,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=775, Invalid=1981, Unknown=0, NotChecked=0, Total=2756
[2020-10-16 10:54:06,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states.
[2020-10-16 10:54:06,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 80.
[2020-10-16 10:54:06,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states.
[2020-10-16 10:54:06,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 203 transitions.
[2020-10-16 10:54:06,563 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 203 transitions. Word has length 25
[2020-10-16 10:54:06,563 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:54:06,563 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 203 transitions.
[2020-10-16 10:54:06,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states.
[2020-10-16 10:54:06,563 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 203 transitions.
[2020-10-16 10:54:06,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2020-10-16 10:54:06,563 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:54:06,563 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:54:06,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,170 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:06,764 INFO L429 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:54:06,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:54:06,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1497212162, now seen corresponding path program 173 times
[2020-10-16 10:54:06,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:54:06,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499949356]
[2020-10-16 10:54:06,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:54:06,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:54:06,999 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:06,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499949356]
[2020-10-16 10:54:07,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518805582]
[2020-10-16 10:54:07,000 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:07,050 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s)
[2020-10-16 10:54:07,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:54:07,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjunts are in the unsatisfiable core
[2020-10-16 10:54:07,052 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:54:07,073 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:07,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:54:07,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19
[2020-10-16 10:54:07,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852607315]
[2020-10-16 10:54:07,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states
[2020-10-16 10:54:07,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:54:07,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2020-10-16 10:54:07,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420
[2020-10-16 10:54:07,075 INFO L87 Difference]: Start difference. First operand 80 states and 203 transitions. Second operand 21 states.
[2020-10-16 10:54:08,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:54:08,036 INFO L93 Difference]: Finished difference Result 119 states and 283 transitions.
[2020-10-16 10:54:08,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states.
[2020-10-16 10:54:08,037 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 25
[2020-10-16 10:54:08,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:54:08,037 INFO L225 Difference]: With dead ends: 119
[2020-10-16 10:54:08,037 INFO L226 Difference]: Without dead ends: 113
[2020-10-16 10:54:08,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 777 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=868, Invalid=1994, Unknown=0, NotChecked=0, Total=2862
[2020-10-16 10:54:08,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states.
[2020-10-16 10:54:08,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 83.
[2020-10-16 10:54:08,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states.
[2020-10-16 10:54:08,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 211 transitions.
[2020-10-16 10:54:08,041 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 211 transitions. Word has length 25
[2020-10-16 10:54:08,041 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:54:08,041 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 211 transitions.
[2020-10-16 10:54:08,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states.
[2020-10-16 10:54:08,041 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 211 transitions.
[2020-10-16 10:54:08,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2020-10-16 10:54:08,041 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:54:08,042 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:54:08,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,171 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:08,249 INFO L429 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:54:08,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:54:08,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1481125022, now seen corresponding path program 174 times
[2020-10-16 10:54:08,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:54:08,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54730542]
[2020-10-16 10:54:08,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:54:08,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:54:08,487 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:08,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54730542]
[2020-10-16 10:54:08,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582432915]
[2020-10-16 10:54:08,487 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:08,540 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s)
[2020-10-16 10:54:08,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:54:08,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjunts are in the unsatisfiable core
[2020-10-16 10:54:08,542 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:54:08,578 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:54:08,600 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:08,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:54:08,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20
[2020-10-16 10:54:08,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002461370]
[2020-10-16 10:54:08,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states
[2020-10-16 10:54:08,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:54:08,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2020-10-16 10:54:08,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462
[2020-10-16 10:54:08,602 INFO L87 Difference]: Start difference. First operand 83 states and 211 transitions. Second operand 22 states.
[2020-10-16 10:54:09,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:54:09,819 INFO L93 Difference]: Finished difference Result 116 states and 277 transitions.
[2020-10-16 10:54:09,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states.
[2020-10-16 10:54:09,820 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 25
[2020-10-16 10:54:09,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:54:09,821 INFO L225 Difference]: With dead ends: 116
[2020-10-16 10:54:09,821 INFO L226 Difference]: Without dead ends: 110
[2020-10-16 10:54:09,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=878, Invalid=2092, Unknown=0, NotChecked=0, Total=2970
[2020-10-16 10:54:09,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states.
[2020-10-16 10:54:09,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 82.
[2020-10-16 10:54:09,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states.
[2020-10-16 10:54:09,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 209 transitions.
[2020-10-16 10:54:09,824 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 209 transitions. Word has length 25
[2020-10-16 10:54:09,824 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:54:09,824 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 209 transitions.
[2020-10-16 10:54:09,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states.
[2020-10-16 10:54:09,824 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 209 transitions.
[2020-10-16 10:54:09,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2020-10-16 10:54:09,825 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:54:09,825 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:54:10,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175,172 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:10,026 INFO L429 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:54:10,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:54:10,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1480634912, now seen corresponding path program 175 times
[2020-10-16 10:54:10,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:54:10,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329625482]
[2020-10-16 10:54:10,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:54:10,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:54:10,257 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:10,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329625482]
[2020-10-16 10:54:10,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920629605]
[2020-10-16 10:54:10,258 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:10,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:54:10,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjunts are in the unsatisfiable core
[2020-10-16 10:54:10,307 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:54:10,329 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:10,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:54:10,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19
[2020-10-16 10:54:10,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974543875]
[2020-10-16 10:54:10,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states
[2020-10-16 10:54:10,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:54:10,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2020-10-16 10:54:10,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420
[2020-10-16 10:54:10,330 INFO L87 Difference]: Start difference. First operand 82 states and 209 transitions. Second operand 21 states.
[2020-10-16 10:54:11,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:54:11,384 INFO L93 Difference]: Finished difference Result 136 states and 327 transitions.
[2020-10-16 10:54:11,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states.
[2020-10-16 10:54:11,385 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 25
[2020-10-16 10:54:11,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:54:11,386 INFO L225 Difference]: With dead ends: 136
[2020-10-16 10:54:11,386 INFO L226 Difference]: Without dead ends: 130
[2020-10-16 10:54:11,387 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 867 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=986, Invalid=2094, Unknown=0, NotChecked=0, Total=3080
[2020-10-16 10:54:11,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states.
[2020-10-16 10:54:11,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 88.
[2020-10-16 10:54:11,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states.
[2020-10-16 10:54:11,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 229 transitions.
[2020-10-16 10:54:11,390 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 229 transitions. Word has length 25
[2020-10-16 10:54:11,390 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:54:11,390 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 229 transitions.
[2020-10-16 10:54:11,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states.
[2020-10-16 10:54:11,390 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 229 transitions.
[2020-10-16 10:54:11,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2020-10-16 10:54:11,390 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:54:11,391 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:54:11,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176,173 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:11,599 INFO L429 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:54:11,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:54:11,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1480618172, now seen corresponding path program 176 times
[2020-10-16 10:54:11,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:54:11,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133567582]
[2020-10-16 10:54:11,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:54:11,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:54:11,830 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:11,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133567582]
[2020-10-16 10:54:11,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946911170]
[2020-10-16 10:54:11,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:11,876 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 10:54:11,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:54:11,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjunts are in the unsatisfiable core
[2020-10-16 10:54:11,880 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:54:11,906 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:54:11,924 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:11,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:54:11,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20
[2020-10-16 10:54:11,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561665156]
[2020-10-16 10:54:11,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states
[2020-10-16 10:54:11,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:54:11,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2020-10-16 10:54:11,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462
[2020-10-16 10:54:11,926 INFO L87 Difference]: Start difference. First operand 88 states and 229 transitions. Second operand 22 states.
[2020-10-16 10:54:13,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:54:13,190 INFO L93 Difference]: Finished difference Result 117 states and 283 transitions.
[2020-10-16 10:54:13,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states.
[2020-10-16 10:54:13,190 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 25
[2020-10-16 10:54:13,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:54:13,191 INFO L225 Difference]: With dead ends: 117
[2020-10-16 10:54:13,191 INFO L226 Difference]: Without dead ends: 109
[2020-10-16 10:54:13,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 866 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=997, Invalid=2195, Unknown=0, NotChecked=0, Total=3192
[2020-10-16 10:54:13,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states.
[2020-10-16 10:54:13,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 85.
[2020-10-16 10:54:13,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states.
[2020-10-16 10:54:13,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 217 transitions.
[2020-10-16 10:54:13,194 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 217 transitions. Word has length 25
[2020-10-16 10:54:13,194 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:54:13,194 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 217 transitions.
[2020-10-16 10:54:13,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states.
[2020-10-16 10:54:13,194 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 217 transitions.
[2020-10-16 10:54:13,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2020-10-16 10:54:13,194 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:54:13,194 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:54:13,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177,174 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:13,395 INFO L429 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:54:13,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:54:13,396 INFO L82 PathProgramCache]: Analyzing trace with hash 601326971, now seen corresponding path program 177 times
[2020-10-16 10:54:13,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:54:13,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781097497]
[2020-10-16 10:54:13,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:54:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:54:13,729 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:13,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781097497]
[2020-10-16 10:54:13,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105765896]
[2020-10-16 10:54:13,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:13,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s)
[2020-10-16 10:54:13,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:54:13,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 22 conjunts are in the unsatisfiable core
[2020-10-16 10:54:13,791 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:54:13,802 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:13,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:54:13,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20
[2020-10-16 10:54:13,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292769610]
[2020-10-16 10:54:13,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states
[2020-10-16 10:54:13,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:54:13,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2020-10-16 10:54:13,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462
[2020-10-16 10:54:13,804 INFO L87 Difference]: Start difference. First operand 85 states and 217 transitions. Second operand 22 states.
[2020-10-16 10:54:14,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:54:14,358 INFO L93 Difference]: Finished difference Result 134 states and 315 transitions.
[2020-10-16 10:54:14,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states.
[2020-10-16 10:54:14,359 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 26
[2020-10-16 10:54:14,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:54:14,359 INFO L225 Difference]: With dead ends: 134
[2020-10-16 10:54:14,359 INFO L226 Difference]: Without dead ends: 128
[2020-10-16 10:54:14,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=499, Invalid=1141, Unknown=0, NotChecked=0, Total=1640
[2020-10-16 10:54:14,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states.
[2020-10-16 10:54:14,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 87.
[2020-10-16 10:54:14,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states.
[2020-10-16 10:54:14,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 221 transitions.
[2020-10-16 10:54:14,362 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 221 transitions. Word has length 26
[2020-10-16 10:54:14,362 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:54:14,362 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 221 transitions.
[2020-10-16 10:54:14,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states.
[2020-10-16 10:54:14,362 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 221 transitions.
[2020-10-16 10:54:14,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2020-10-16 10:54:14,363 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:54:14,363 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:54:14,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 175 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable178
[2020-10-16 10:54:14,563 INFO L429 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:54:14,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:54:14,564 INFO L82 PathProgramCache]: Analyzing trace with hash -946831649, now seen corresponding path program 178 times
[2020-10-16 10:54:14,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:54:14,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828339539]
[2020-10-16 10:54:14,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:54:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:54:14,905 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:14,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828339539]
[2020-10-16 10:54:14,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853244394]
[2020-10-16 10:54:14,906 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:14,953 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 10:54:14,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:54:14,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 22 conjunts are in the unsatisfiable core
[2020-10-16 10:54:14,955 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:54:14,980 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:54:14,994 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:14,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:54:14,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21
[2020-10-16 10:54:14,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022256642]
[2020-10-16 10:54:14,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states
[2020-10-16 10:54:14,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:54:14,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2020-10-16 10:54:14,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506
[2020-10-16 10:54:14,995 INFO L87 Difference]: Start difference. First operand 87 states and 221 transitions. Second operand 23 states.
[2020-10-16 10:54:15,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:54:15,628 INFO L93 Difference]: Finished difference Result 131 states and 309 transitions.
[2020-10-16 10:54:15,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states.
[2020-10-16 10:54:15,628 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 26
[2020-10-16 10:54:15,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:54:15,629 INFO L225 Difference]: With dead ends: 131
[2020-10-16 10:54:15,629 INFO L226 Difference]: Without dead ends: 125
[2020-10-16 10:54:15,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=546, Invalid=1346, Unknown=0, NotChecked=0, Total=1892
[2020-10-16 10:54:15,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states.
[2020-10-16 10:54:15,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 86.
[2020-10-16 10:54:15,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states.
[2020-10-16 10:54:15,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 219 transitions.
[2020-10-16 10:54:15,632 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 219 transitions. Word has length 26
[2020-10-16 10:54:15,632 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:54:15,632 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 219 transitions.
[2020-10-16 10:54:15,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states.
[2020-10-16 10:54:15,632 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 219 transitions.
[2020-10-16 10:54:15,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2020-10-16 10:54:15,632 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:54:15,633 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:54:15,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 176 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable179
[2020-10-16 10:54:15,833 INFO L429 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:54:15,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:54:15,834 INFO L82 PathProgramCache]: Analyzing trace with hash 2046346461, now seen corresponding path program 179 times
[2020-10-16 10:54:15,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:54:15,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690906145]
[2020-10-16 10:54:15,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:54:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:54:16,151 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:16,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690906145]
[2020-10-16 10:54:16,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033240540]
[2020-10-16 10:54:16,152 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:16,200 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s)
[2020-10-16 10:54:16,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:54:16,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 22 conjunts are in the unsatisfiable core
[2020-10-16 10:54:16,202 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:54:16,222 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:16,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:54:16,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20
[2020-10-16 10:54:16,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505727399]
[2020-10-16 10:54:16,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states
[2020-10-16 10:54:16,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:54:16,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2020-10-16 10:54:16,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462
[2020-10-16 10:54:16,224 INFO L87 Difference]: Start difference. First operand 86 states and 219 transitions. Second operand 22 states.
[2020-10-16 10:54:16,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:54:16,881 INFO L93 Difference]: Finished difference Result 128 states and 303 transitions.
[2020-10-16 10:54:16,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states.
[2020-10-16 10:54:16,882 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 26
[2020-10-16 10:54:16,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:54:16,882 INFO L225 Difference]: With dead ends: 128
[2020-10-16 10:54:16,883 INFO L226 Difference]: Without dead ends: 122
[2020-10-16 10:54:16,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=506, Invalid=1300, Unknown=0, NotChecked=0, Total=1806
[2020-10-16 10:54:16,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states.
[2020-10-16 10:54:16,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 87.
[2020-10-16 10:54:16,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states.
[2020-10-16 10:54:16,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 221 transitions.
[2020-10-16 10:54:16,885 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 221 transitions. Word has length 26
[2020-10-16 10:54:16,886 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:54:16,886 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 221 transitions.
[2020-10-16 10:54:16,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states.
[2020-10-16 10:54:16,886 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 221 transitions.
[2020-10-16 10:54:16,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2020-10-16 10:54:16,886 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:54:16,886 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:54:17,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180,177 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:17,087 INFO L429 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:54:17,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:54:17,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1235797825, now seen corresponding path program 180 times
[2020-10-16 10:54:17,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:54:17,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453702748]
[2020-10-16 10:54:17,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:54:17,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:54:17,409 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:17,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453702748]
[2020-10-16 10:54:17,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748736488]
[2020-10-16 10:54:17,410 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:17,464 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s)
[2020-10-16 10:54:17,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:54:17,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 22 conjunts are in the unsatisfiable core
[2020-10-16 10:54:17,466 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:54:17,492 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:54:17,507 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:17,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:54:17,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21
[2020-10-16 10:54:17,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595288641]
[2020-10-16 10:54:17,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states
[2020-10-16 10:54:17,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:54:17,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2020-10-16 10:54:17,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506
[2020-10-16 10:54:17,509 INFO L87 Difference]: Start difference. First operand 87 states and 221 transitions. Second operand 23 states.
[2020-10-16 10:54:18,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:54:18,294 INFO L93 Difference]: Finished difference Result 127 states and 301 transitions.
[2020-10-16 10:54:18,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2020-10-16 10:54:18,295 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 26
[2020-10-16 10:54:18,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:54:18,295 INFO L225 Difference]: With dead ends: 127
[2020-10-16 10:54:18,295 INFO L226 Difference]: Without dead ends: 121
[2020-10-16 10:54:18,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=560, Invalid=1510, Unknown=0, NotChecked=0, Total=2070
[2020-10-16 10:54:18,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states.
[2020-10-16 10:54:18,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 86.
[2020-10-16 10:54:18,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states.
[2020-10-16 10:54:18,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 219 transitions.
[2020-10-16 10:54:18,298 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 219 transitions. Word has length 26
[2020-10-16 10:54:18,298 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:54:18,298 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 219 transitions.
[2020-10-16 10:54:18,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states.
[2020-10-16 10:54:18,299 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 219 transitions.
[2020-10-16 10:54:18,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2020-10-16 10:54:18,299 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:54:18,299 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:54:18,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 178 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable181
[2020-10-16 10:54:18,500 INFO L429 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:54:18,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:54:18,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1288074431, now seen corresponding path program 181 times
[2020-10-16 10:54:18,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:54:18,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571884186]
[2020-10-16 10:54:18,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:54:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:54:18,799 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:18,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571884186]
[2020-10-16 10:54:18,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384000771]
[2020-10-16 10:54:18,800 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:18,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:54:18,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 22 conjunts are in the unsatisfiable core
[2020-10-16 10:54:18,850 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:54:18,865 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:18,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:54:18,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20
[2020-10-16 10:54:18,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119460827]
[2020-10-16 10:54:18,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states
[2020-10-16 10:54:18,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:54:18,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2020-10-16 10:54:18,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462
[2020-10-16 10:54:18,866 INFO L87 Difference]: Start difference. First operand 86 states and 219 transitions. Second operand 22 states.
[2020-10-16 10:54:19,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:54:19,594 INFO L93 Difference]: Finished difference Result 124 states and 295 transitions.
[2020-10-16 10:54:19,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states.
[2020-10-16 10:54:19,595 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 26
[2020-10-16 10:54:19,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:54:19,596 INFO L225 Difference]: With dead ends: 124
[2020-10-16 10:54:19,596 INFO L226 Difference]: Without dead ends: 118
[2020-10-16 10:54:19,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=529, Invalid=1451, Unknown=0, NotChecked=0, Total=1980
[2020-10-16 10:54:19,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states.
[2020-10-16 10:54:19,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 87.
[2020-10-16 10:54:19,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states.
[2020-10-16 10:54:19,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 221 transitions.
[2020-10-16 10:54:19,598 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 221 transitions. Word has length 26
[2020-10-16 10:54:19,598 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:54:19,598 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 221 transitions.
[2020-10-16 10:54:19,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states.
[2020-10-16 10:54:19,598 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 221 transitions.
[2020-10-16 10:54:19,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2020-10-16 10:54:19,598 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:54:19,599 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:54:19,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182,179 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:19,799 INFO L429 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:54:19,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:54:19,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1130643421, now seen corresponding path program 182 times
[2020-10-16 10:54:19,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:54:19,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781164202]
[2020-10-16 10:54:19,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:54:19,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:54:20,110 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:20,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781164202]
[2020-10-16 10:54:20,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556248102]
[2020-10-16 10:54:20,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:20,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 10:54:20,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:54:20,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 22 conjunts are in the unsatisfiable core
[2020-10-16 10:54:20,160 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:54:20,184 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:54:20,196 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:20,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:54:20,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21
[2020-10-16 10:54:20,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285911031]
[2020-10-16 10:54:20,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states
[2020-10-16 10:54:20,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:54:20,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2020-10-16 10:54:20,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506
[2020-10-16 10:54:20,198 INFO L87 Difference]: Start difference. First operand 87 states and 221 transitions. Second operand 23 states.
[2020-10-16 10:54:21,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:54:21,095 INFO L93 Difference]: Finished difference Result 123 states and 293 transitions.
[2020-10-16 10:54:21,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states.
[2020-10-16 10:54:21,096 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 26
[2020-10-16 10:54:21,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:54:21,096 INFO L225 Difference]: With dead ends: 123
[2020-10-16 10:54:21,097 INFO L226 Difference]: Without dead ends: 117
[2020-10-16 10:54:21,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=590, Invalid=1666, Unknown=0, NotChecked=0, Total=2256
[2020-10-16 10:54:21,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states.
[2020-10-16 10:54:21,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 86.
[2020-10-16 10:54:21,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states.
[2020-10-16 10:54:21,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 219 transitions.
[2020-10-16 10:54:21,099 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 219 transitions. Word has length 26
[2020-10-16 10:54:21,099 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:54:21,099 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 219 transitions.
[2020-10-16 10:54:21,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states.
[2020-10-16 10:54:21,100 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 219 transitions.
[2020-10-16 10:54:21,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2020-10-16 10:54:21,100 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:54:21,100 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:54:21,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183,180 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:21,301 INFO L429 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:54:21,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:54:21,301 INFO L82 PathProgramCache]: Analyzing trace with hash -442321631, now seen corresponding path program 183 times
[2020-10-16 10:54:21,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:54:21,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341708764]
[2020-10-16 10:54:21,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:54:21,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:54:21,590 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:21,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341708764]
[2020-10-16 10:54:21,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815003419]
[2020-10-16 10:54:21,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:21,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s)
[2020-10-16 10:54:21,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:54:21,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 22 conjunts are in the unsatisfiable core
[2020-10-16 10:54:21,644 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:54:21,661 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:21,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:54:21,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20
[2020-10-16 10:54:21,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627503891]
[2020-10-16 10:54:21,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states
[2020-10-16 10:54:21,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:54:21,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2020-10-16 10:54:21,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462
[2020-10-16 10:54:21,663 INFO L87 Difference]: Start difference. First operand 86 states and 219 transitions. Second operand 22 states.
[2020-10-16 10:54:22,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:54:22,462 INFO L93 Difference]: Finished difference Result 120 states and 287 transitions.
[2020-10-16 10:54:22,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states.
[2020-10-16 10:54:22,463 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 26
[2020-10-16 10:54:22,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:54:22,463 INFO L225 Difference]: With dead ends: 120
[2020-10-16 10:54:22,463 INFO L226 Difference]: Without dead ends: 114
[2020-10-16 10:54:22,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=568, Invalid=1594, Unknown=0, NotChecked=0, Total=2162
[2020-10-16 10:54:22,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states.
[2020-10-16 10:54:22,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 87.
[2020-10-16 10:54:22,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states.
[2020-10-16 10:54:22,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 221 transitions.
[2020-10-16 10:54:22,466 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 221 transitions. Word has length 26
[2020-10-16 10:54:22,466 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:54:22,466 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 221 transitions.
[2020-10-16 10:54:22,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states.
[2020-10-16 10:54:22,466 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 221 transitions.
[2020-10-16 10:54:22,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2020-10-16 10:54:22,466 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:54:22,467 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:54:22,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,181 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:22,667 INFO L429 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:54:22,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:54:22,668 INFO L82 PathProgramCache]: Analyzing trace with hash 542869893, now seen corresponding path program 184 times
[2020-10-16 10:54:22,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:54:22,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840532478]
[2020-10-16 10:54:22,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:54:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:54:22,969 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:22,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840532478]
[2020-10-16 10:54:22,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971698671]
[2020-10-16 10:54:22,970 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:23,016 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 10:54:23,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:54:23,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 22 conjunts are in the unsatisfiable core
[2020-10-16 10:54:23,018 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:54:23,046 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:54:23,062 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:23,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:54:23,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21
[2020-10-16 10:54:23,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875276860]
[2020-10-16 10:54:23,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states
[2020-10-16 10:54:23,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:54:23,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2020-10-16 10:54:23,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506
[2020-10-16 10:54:23,064 INFO L87 Difference]: Start difference. First operand 87 states and 221 transitions. Second operand 23 states.
[2020-10-16 10:54:24,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:54:24,043 INFO L93 Difference]: Finished difference Result 119 states and 285 transitions.
[2020-10-16 10:54:24,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states.
[2020-10-16 10:54:24,044 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 26
[2020-10-16 10:54:24,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:54:24,045 INFO L225 Difference]: With dead ends: 119
[2020-10-16 10:54:24,045 INFO L226 Difference]: Without dead ends: 113
[2020-10-16 10:54:24,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=636, Invalid=1814, Unknown=0, NotChecked=0, Total=2450
[2020-10-16 10:54:24,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states.
[2020-10-16 10:54:24,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 86.
[2020-10-16 10:54:24,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states.
[2020-10-16 10:54:24,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 219 transitions.
[2020-10-16 10:54:24,047 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 219 transitions. Word has length 26
[2020-10-16 10:54:24,048 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:54:24,048 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 219 transitions.
[2020-10-16 10:54:24,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states.
[2020-10-16 10:54:24,048 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 219 transitions.
[2020-10-16 10:54:24,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2020-10-16 10:54:24,048 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:54:24,048 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:54:24,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185,182 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:24,249 INFO L429 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:54:24,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:54:24,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1074289149, now seen corresponding path program 185 times
[2020-10-16 10:54:24,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:54:24,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011271865]
[2020-10-16 10:54:24,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:54:24,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:54:24,530 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:24,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011271865]
[2020-10-16 10:54:24,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597697846]
[2020-10-16 10:54:24,531 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:24,583 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s)
[2020-10-16 10:54:24,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:54:24,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 22 conjunts are in the unsatisfiable core
[2020-10-16 10:54:24,585 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:54:24,602 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:24,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:54:24,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20
[2020-10-16 10:54:24,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605936827]
[2020-10-16 10:54:24,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states
[2020-10-16 10:54:24,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:54:24,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2020-10-16 10:54:24,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462
[2020-10-16 10:54:24,603 INFO L87 Difference]: Start difference. First operand 86 states and 219 transitions. Second operand 22 states.
[2020-10-16 10:54:25,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:54:25,476 INFO L93 Difference]: Finished difference Result 116 states and 279 transitions.
[2020-10-16 10:54:25,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states.
[2020-10-16 10:54:25,477 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 26
[2020-10-16 10:54:25,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:54:25,477 INFO L225 Difference]: With dead ends: 116
[2020-10-16 10:54:25,477 INFO L226 Difference]: Without dead ends: 110
[2020-10-16 10:54:25,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=623, Invalid=1729, Unknown=0, NotChecked=0, Total=2352
[2020-10-16 10:54:25,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states.
[2020-10-16 10:54:25,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 87.
[2020-10-16 10:54:25,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states.
[2020-10-16 10:54:25,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 221 transitions.
[2020-10-16 10:54:25,479 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 221 transitions. Word has length 26
[2020-10-16 10:54:25,480 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:54:25,480 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 221 transitions.
[2020-10-16 10:54:25,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states.
[2020-10-16 10:54:25,480 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 221 transitions.
[2020-10-16 10:54:25,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2020-10-16 10:54:25,480 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:54:25,480 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:54:25,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 183 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable186
[2020-10-16 10:54:25,681 INFO L429 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:54:25,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:54:25,681 INFO L82 PathProgramCache]: Analyzing trace with hash 182600551, now seen corresponding path program 186 times
[2020-10-16 10:54:25,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:54:25,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430561747]
[2020-10-16 10:54:25,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:54:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:54:25,961 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:25,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430561747]
[2020-10-16 10:54:25,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428054699]
[2020-10-16 10:54:25,962 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:26,013 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s)
[2020-10-16 10:54:26,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:54:26,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 22 conjunts are in the unsatisfiable core
[2020-10-16 10:54:26,015 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:54:26,041 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:54:26,057 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:26,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:54:26,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21
[2020-10-16 10:54:26,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263317385]
[2020-10-16 10:54:26,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states
[2020-10-16 10:54:26,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:54:26,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2020-10-16 10:54:26,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506
[2020-10-16 10:54:26,058 INFO L87 Difference]: Start difference. First operand 87 states and 221 transitions. Second operand 23 states.
[2020-10-16 10:54:27,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:54:27,146 INFO L93 Difference]: Finished difference Result 115 states and 277 transitions.
[2020-10-16 10:54:27,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states.
[2020-10-16 10:54:27,147 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 26
[2020-10-16 10:54:27,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:54:27,148 INFO L225 Difference]: With dead ends: 115
[2020-10-16 10:54:27,148 INFO L226 Difference]: Without dead ends: 109
[2020-10-16 10:54:27,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=698, Invalid=1954, Unknown=0, NotChecked=0, Total=2652
[2020-10-16 10:54:27,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states.
[2020-10-16 10:54:27,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 86.
[2020-10-16 10:54:27,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states.
[2020-10-16 10:54:27,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 219 transitions.
[2020-10-16 10:54:27,151 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 219 transitions. Word has length 26
[2020-10-16 10:54:27,151 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:54:27,151 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 219 transitions.
[2020-10-16 10:54:27,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states.
[2020-10-16 10:54:27,151 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 219 transitions.
[2020-10-16 10:54:27,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2020-10-16 10:54:27,152 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:54:27,152 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:54:27,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187,184 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:27,360 INFO L429 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:54:27,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:54:27,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1798793061, now seen corresponding path program 187 times
[2020-10-16 10:54:27,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:54:27,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455728298]
[2020-10-16 10:54:27,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:54:27,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:54:27,633 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:27,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455728298]
[2020-10-16 10:54:27,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279096730]
[2020-10-16 10:54:27,634 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:27,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:54:27,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 22 conjunts are in the unsatisfiable core
[2020-10-16 10:54:27,684 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:54:27,704 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:27,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:54:27,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20
[2020-10-16 10:54:27,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553956992]
[2020-10-16 10:54:27,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states
[2020-10-16 10:54:27,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:54:27,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2020-10-16 10:54:27,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462
[2020-10-16 10:54:27,706 INFO L87 Difference]: Start difference. First operand 86 states and 219 transitions. Second operand 22 states.
[2020-10-16 10:54:28,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:54:28,675 INFO L93 Difference]: Finished difference Result 112 states and 271 transitions.
[2020-10-16 10:54:28,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states.
[2020-10-16 10:54:28,676 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 26
[2020-10-16 10:54:28,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:54:28,676 INFO L225 Difference]: With dead ends: 112
[2020-10-16 10:54:28,676 INFO L226 Difference]: Without dead ends: 106
[2020-10-16 10:54:28,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=694, Invalid=1856, Unknown=0, NotChecked=0, Total=2550
[2020-10-16 10:54:28,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states.
[2020-10-16 10:54:28,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 87.
[2020-10-16 10:54:28,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states.
[2020-10-16 10:54:28,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 221 transitions.
[2020-10-16 10:54:28,679 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 221 transitions. Word has length 26
[2020-10-16 10:54:28,679 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:54:28,679 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 221 transitions.
[2020-10-16 10:54:28,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states.
[2020-10-16 10:54:28,679 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 221 transitions.
[2020-10-16 10:54:28,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2020-10-16 10:54:28,679 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:54:28,679 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:54:28,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 185 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable188
[2020-10-16 10:54:28,880 INFO L429 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:54:28,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:54:28,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1976431159, now seen corresponding path program 188 times
[2020-10-16 10:54:28,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:54:28,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999904221]
[2020-10-16 10:54:28,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:54:28,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:54:29,154 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:29,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999904221]
[2020-10-16 10:54:29,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593542928]
[2020-10-16 10:54:29,155 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:29,203 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 10:54:29,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:54:29,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 22 conjunts are in the unsatisfiable core
[2020-10-16 10:54:29,205 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:54:29,230 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:54:29,249 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:29,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:54:29,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21
[2020-10-16 10:54:29,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958888876]
[2020-10-16 10:54:29,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states
[2020-10-16 10:54:29,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:54:29,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2020-10-16 10:54:29,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506
[2020-10-16 10:54:29,251 INFO L87 Difference]: Start difference. First operand 87 states and 221 transitions. Second operand 23 states.
[2020-10-16 10:54:30,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:54:30,453 INFO L93 Difference]: Finished difference Result 111 states and 269 transitions.
[2020-10-16 10:54:30,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states.
[2020-10-16 10:54:30,454 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 26
[2020-10-16 10:54:30,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:54:30,455 INFO L225 Difference]: With dead ends: 111
[2020-10-16 10:54:30,455 INFO L226 Difference]: Without dead ends: 105
[2020-10-16 10:54:30,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=776, Invalid=2086, Unknown=0, NotChecked=0, Total=2862
[2020-10-16 10:54:30,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states.
[2020-10-16 10:54:30,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 86.
[2020-10-16 10:54:30,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states.
[2020-10-16 10:54:30,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 219 transitions.
[2020-10-16 10:54:30,458 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 219 transitions. Word has length 26
[2020-10-16 10:54:30,458 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:54:30,458 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 219 transitions.
[2020-10-16 10:54:30,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states.
[2020-10-16 10:54:30,458 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 219 transitions.
[2020-10-16 10:54:30,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2020-10-16 10:54:30,459 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:54:30,459 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:54:30,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 186 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable189
[2020-10-16 10:54:30,660 INFO L429 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:54:30,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:54:30,660 INFO L82 PathProgramCache]: Analyzing trace with hash -321119929, now seen corresponding path program 189 times
[2020-10-16 10:54:30,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:54:30,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451322913]
[2020-10-16 10:54:30,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:54:30,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:54:30,926 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:30,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451322913]
[2020-10-16 10:54:30,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793890180]
[2020-10-16 10:54:30,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:30,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s)
[2020-10-16 10:54:30,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:54:30,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 22 conjunts are in the unsatisfiable core
[2020-10-16 10:54:30,982 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:54:31,005 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:31,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:54:31,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20
[2020-10-16 10:54:31,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073896690]
[2020-10-16 10:54:31,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states
[2020-10-16 10:54:31,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:54:31,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2020-10-16 10:54:31,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462
[2020-10-16 10:54:31,007 INFO L87 Difference]: Start difference. First operand 86 states and 219 transitions. Second operand 22 states.
[2020-10-16 10:54:32,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:54:32,024 INFO L93 Difference]: Finished difference Result 108 states and 263 transitions.
[2020-10-16 10:54:32,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states.
[2020-10-16 10:54:32,025 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 26
[2020-10-16 10:54:32,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:54:32,026 INFO L225 Difference]: With dead ends: 108
[2020-10-16 10:54:32,026 INFO L226 Difference]: Without dead ends: 102
[2020-10-16 10:54:32,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=781, Invalid=1975, Unknown=0, NotChecked=0, Total=2756
[2020-10-16 10:54:32,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states.
[2020-10-16 10:54:32,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 87.
[2020-10-16 10:54:32,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states.
[2020-10-16 10:54:32,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 221 transitions.
[2020-10-16 10:54:32,029 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 221 transitions. Word has length 26
[2020-10-16 10:54:32,029 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:54:32,029 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 221 transitions.
[2020-10-16 10:54:32,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states.
[2020-10-16 10:54:32,029 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 221 transitions.
[2020-10-16 10:54:32,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2020-10-16 10:54:32,029 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:54:32,029 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:54:32,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190,187 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:32,232 INFO L429 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:54:32,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:54:32,233 INFO L82 PathProgramCache]: Analyzing trace with hash -2041247573, now seen corresponding path program 190 times
[2020-10-16 10:54:32,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:54:32,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383309534]
[2020-10-16 10:54:32,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:54:32,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:54:32,503 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:32,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383309534]
[2020-10-16 10:54:32,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980298035]
[2020-10-16 10:54:32,504 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:32,552 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 10:54:32,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:54:32,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 22 conjunts are in the unsatisfiable core
[2020-10-16 10:54:32,553 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:54:32,580 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:54:32,598 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:32,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:54:32,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21
[2020-10-16 10:54:32,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833346100]
[2020-10-16 10:54:32,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states
[2020-10-16 10:54:32,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:54:32,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2020-10-16 10:54:32,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506
[2020-10-16 10:54:32,600 INFO L87 Difference]: Start difference. First operand 87 states and 221 transitions. Second operand 23 states.
[2020-10-16 10:54:33,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:54:33,900 INFO L93 Difference]: Finished difference Result 107 states and 261 transitions.
[2020-10-16 10:54:33,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states.
[2020-10-16 10:54:33,901 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 26
[2020-10-16 10:54:33,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:54:33,901 INFO L225 Difference]: With dead ends: 107
[2020-10-16 10:54:33,901 INFO L226 Difference]: Without dead ends: 101
[2020-10-16 10:54:33,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 746 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=870, Invalid=2210, Unknown=0, NotChecked=0, Total=3080
[2020-10-16 10:54:33,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states.
[2020-10-16 10:54:33,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 86.
[2020-10-16 10:54:33,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states.
[2020-10-16 10:54:33,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 219 transitions.
[2020-10-16 10:54:33,904 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 219 transitions. Word has length 26
[2020-10-16 10:54:33,905 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:54:33,905 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 219 transitions.
[2020-10-16 10:54:33,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states.
[2020-10-16 10:54:33,905 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 219 transitions.
[2020-10-16 10:54:33,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2020-10-16 10:54:33,905 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:54:33,905 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:54:34,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191,188 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:34,110 INFO L429 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:54:34,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:54:34,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1570251863, now seen corresponding path program 191 times
[2020-10-16 10:54:34,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:54:34,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227196943]
[2020-10-16 10:54:34,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:54:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:54:34,373 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:34,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227196943]
[2020-10-16 10:54:34,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678644416]
[2020-10-16 10:54:34,373 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:34,426 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s)
[2020-10-16 10:54:34,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:54:34,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 22 conjunts are in the unsatisfiable core
[2020-10-16 10:54:34,428 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:54:34,450 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:34,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:54:34,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20
[2020-10-16 10:54:34,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855797748]
[2020-10-16 10:54:34,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states
[2020-10-16 10:54:34,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:54:34,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2020-10-16 10:54:34,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462
[2020-10-16 10:54:34,452 INFO L87 Difference]: Start difference. First operand 86 states and 219 transitions. Second operand 22 states.
[2020-10-16 10:54:35,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:54:35,541 INFO L93 Difference]: Finished difference Result 104 states and 255 transitions.
[2020-10-16 10:54:35,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states.
[2020-10-16 10:54:35,542 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 26
[2020-10-16 10:54:35,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:54:35,543 INFO L225 Difference]: With dead ends: 104
[2020-10-16 10:54:35,543 INFO L226 Difference]: Without dead ends: 98
[2020-10-16 10:54:35,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=884, Invalid=2086, Unknown=0, NotChecked=0, Total=2970
[2020-10-16 10:54:35,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states.
[2020-10-16 10:54:35,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 87.
[2020-10-16 10:54:35,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states.
[2020-10-16 10:54:35,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 221 transitions.
[2020-10-16 10:54:35,546 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 221 transitions. Word has length 26
[2020-10-16 10:54:35,546 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:54:35,546 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 221 transitions.
[2020-10-16 10:54:35,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states.
[2020-10-16 10:54:35,546 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 221 transitions.
[2020-10-16 10:54:35,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2020-10-16 10:54:35,546 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:54:35,546 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:54:35,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192,189 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:35,747 INFO L429 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:54:35,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:54:35,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1554164723, now seen corresponding path program 192 times
[2020-10-16 10:54:35,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:54:35,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645804868]
[2020-10-16 10:54:35,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:54:35,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:54:36,012 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:36,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645804868]
[2020-10-16 10:54:36,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177961342]
[2020-10-16 10:54:36,013 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:36,071 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s)
[2020-10-16 10:54:36,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:54:36,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 22 conjunts are in the unsatisfiable core
[2020-10-16 10:54:36,073 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:54:36,102 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:54:36,121 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:36,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:54:36,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21
[2020-10-16 10:54:36,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811817524]
[2020-10-16 10:54:36,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states
[2020-10-16 10:54:36,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:54:36,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2020-10-16 10:54:36,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506
[2020-10-16 10:54:36,122 INFO L87 Difference]: Start difference. First operand 87 states and 221 transitions. Second operand 23 states.
[2020-10-16 10:54:37,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:54:37,557 INFO L93 Difference]: Finished difference Result 103 states and 253 transitions.
[2020-10-16 10:54:37,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states.
[2020-10-16 10:54:37,558 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 26
[2020-10-16 10:54:37,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:54:37,559 INFO L225 Difference]: With dead ends: 103
[2020-10-16 10:54:37,559 INFO L226 Difference]: Without dead ends: 97
[2020-10-16 10:54:37,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=980, Invalid=2326, Unknown=0, NotChecked=0, Total=3306
[2020-10-16 10:54:37,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states.
[2020-10-16 10:54:37,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 86.
[2020-10-16 10:54:37,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states.
[2020-10-16 10:54:37,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 219 transitions.
[2020-10-16 10:54:37,562 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 219 transitions. Word has length 26
[2020-10-16 10:54:37,562 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:54:37,562 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 219 transitions.
[2020-10-16 10:54:37,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states.
[2020-10-16 10:54:37,563 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 219 transitions.
[2020-10-16 10:54:37,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2020-10-16 10:54:37,563 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:54:37,563 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:54:37,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 190 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable193
[2020-10-16 10:54:37,772 INFO L429 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:54:37,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:54:37,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1553674613, now seen corresponding path program 193 times
[2020-10-16 10:54:37,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:54:37,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071853881]
[2020-10-16 10:54:37,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:54:37,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:54:38,044 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:38,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071853881]
[2020-10-16 10:54:38,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164070061]
[2020-10-16 10:54:38,045 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:38,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:54:38,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 22 conjunts are in the unsatisfiable core
[2020-10-16 10:54:38,099 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:54:38,125 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:38,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:54:38,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20
[2020-10-16 10:54:38,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740641300]
[2020-10-16 10:54:38,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states
[2020-10-16 10:54:38,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:54:38,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2020-10-16 10:54:38,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462
[2020-10-16 10:54:38,126 INFO L87 Difference]: Start difference. First operand 86 states and 219 transitions. Second operand 22 states.
[2020-10-16 10:54:39,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:54:39,303 INFO L93 Difference]: Finished difference Result 119 states and 293 transitions.
[2020-10-16 10:54:39,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states.
[2020-10-16 10:54:39,304 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 26
[2020-10-16 10:54:39,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:54:39,305 INFO L225 Difference]: With dead ends: 119
[2020-10-16 10:54:39,305 INFO L226 Difference]: Without dead ends: 113
[2020-10-16 10:54:39,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1003, Invalid=2189, Unknown=0, NotChecked=0, Total=3192
[2020-10-16 10:54:39,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states.
[2020-10-16 10:54:39,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 90.
[2020-10-16 10:54:39,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states.
[2020-10-16 10:54:39,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 233 transitions.
[2020-10-16 10:54:39,308 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 233 transitions. Word has length 26
[2020-10-16 10:54:39,308 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:54:39,308 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 233 transitions.
[2020-10-16 10:54:39,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states.
[2020-10-16 10:54:39,308 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 233 transitions.
[2020-10-16 10:54:39,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2020-10-16 10:54:39,308 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:54:39,308 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:54:39,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194,191 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:39,509 INFO L429 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:54:39,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:54:39,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1553657873, now seen corresponding path program 194 times
[2020-10-16 10:54:39,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:54:39,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920970685]
[2020-10-16 10:54:39,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:54:39,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:54:39,775 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:39,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920970685]
[2020-10-16 10:54:39,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402144520]
[2020-10-16 10:54:39,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:39,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 10:54:39,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:54:39,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 22 conjunts are in the unsatisfiable core
[2020-10-16 10:54:39,826 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:54:39,851 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:54:39,871 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:39,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:54:39,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21
[2020-10-16 10:54:39,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213024438]
[2020-10-16 10:54:39,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states
[2020-10-16 10:54:39,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:54:39,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2020-10-16 10:54:39,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506
[2020-10-16 10:54:39,873 INFO L87 Difference]: Start difference. First operand 90 states and 233 transitions. Second operand 23 states.
[2020-10-16 10:54:41,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:54:41,334 INFO L93 Difference]: Finished difference Result 100 states and 249 transitions.
[2020-10-16 10:54:41,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states.
[2020-10-16 10:54:41,335 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 26
[2020-10-16 10:54:41,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:54:41,335 INFO L225 Difference]: With dead ends: 100
[2020-10-16 10:54:41,335 INFO L226 Difference]: Without dead ends: 92
[2020-10-16 10:54:41,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 911 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1106, Invalid=2434, Unknown=0, NotChecked=0, Total=3540
[2020-10-16 10:54:41,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states.
[2020-10-16 10:54:41,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 65.
[2020-10-16 10:54:41,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states.
[2020-10-16 10:54:41,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 158 transitions.
[2020-10-16 10:54:41,338 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 158 transitions. Word has length 26
[2020-10-16 10:54:41,338 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:54:41,339 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 158 transitions.
[2020-10-16 10:54:41,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states.
[2020-10-16 10:54:41,339 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 158 transitions.
[2020-10-16 10:54:41,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2020-10-16 10:54:41,339 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:54:41,339 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:54:41,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195,192 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:41,543 INFO L429 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:54:41,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:54:41,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1345493231, now seen corresponding path program 195 times
[2020-10-16 10:54:41,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:54:41,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121411771]
[2020-10-16 10:54:41,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:54:41,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:54:41,810 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:41,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121411771]
[2020-10-16 10:54:41,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445280949]
[2020-10-16 10:54:41,811 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:41,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s)
[2020-10-16 10:54:41,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:54:41,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 22 conjunts are in the unsatisfiable core
[2020-10-16 10:54:41,867 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:54:41,895 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-10-16 10:54:41,920 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:41,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:54:41,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21
[2020-10-16 10:54:41,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994210053]
[2020-10-16 10:54:41,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states
[2020-10-16 10:54:41,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:54:41,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2020-10-16 10:54:41,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=387, Unknown=0, NotChecked=0, Total=506
[2020-10-16 10:54:41,922 INFO L87 Difference]: Start difference. First operand 65 states and 158 transitions. Second operand 23 states.
[2020-10-16 10:54:43,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:54:43,295 INFO L93 Difference]: Finished difference Result 116 states and 283 transitions.
[2020-10-16 10:54:43,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states.
[2020-10-16 10:54:43,296 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 26
[2020-10-16 10:54:43,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:54:43,297 INFO L225 Difference]: With dead ends: 116
[2020-10-16 10:54:43,297 INFO L226 Difference]: Without dead ends: 111
[2020-10-16 10:54:43,297 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 987 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1153, Invalid=2387, Unknown=0, NotChecked=0, Total=3540
[2020-10-16 10:54:43,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states.
[2020-10-16 10:54:43,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 88.
[2020-10-16 10:54:43,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states.
[2020-10-16 10:54:43,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 225 transitions.
[2020-10-16 10:54:43,298 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 225 transitions. Word has length 26
[2020-10-16 10:54:43,299 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:54:43,299 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 225 transitions.
[2020-10-16 10:54:43,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states.
[2020-10-16 10:54:43,299 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 225 transitions.
[2020-10-16 10:54:43,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2020-10-16 10:54:43,299 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:54:43,299 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:54:43,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196,193 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:43,500 INFO L429 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:54:43,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:54:43,500 INFO L82 PathProgramCache]: Analyzing trace with hash -918737500, now seen corresponding path program 196 times
[2020-10-16 10:54:43,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:54:43,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021700209]
[2020-10-16 10:54:43,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:54:43,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:54:43,796 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:43,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021700209]
[2020-10-16 10:54:43,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704690856]
[2020-10-16 10:54:43,797 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:43,854 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 10:54:43,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:54:43,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core
[2020-10-16 10:54:43,856 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:54:43,883 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-10-16 10:54:43,907 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:43,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:54:43,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22
[2020-10-16 10:54:43,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41758007]
[2020-10-16 10:54:43,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states
[2020-10-16 10:54:43,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:54:43,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2020-10-16 10:54:43,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=422, Unknown=0, NotChecked=0, Total=552
[2020-10-16 10:54:43,909 INFO L87 Difference]: Start difference. First operand 88 states and 225 transitions. Second operand 24 states.
[2020-10-16 10:54:45,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:54:45,378 INFO L93 Difference]: Finished difference Result 96 states and 245 transitions.
[2020-10-16 10:54:45,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states.
[2020-10-16 10:54:45,379 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 27
[2020-10-16 10:54:45,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:54:45,379 INFO L225 Difference]: With dead ends: 96
[2020-10-16 10:54:45,379 INFO L226 Difference]: Without dead ends: 91
[2020-10-16 10:54:45,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 942 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1171, Invalid=2489, Unknown=0, NotChecked=0, Total=3660
[2020-10-16 10:54:45,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states.
[2020-10-16 10:54:45,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 66.
[2020-10-16 10:54:45,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states.
[2020-10-16 10:54:45,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 162 transitions.
[2020-10-16 10:54:45,381 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 162 transitions. Word has length 27
[2020-10-16 10:54:45,382 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:54:45,382 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 162 transitions.
[2020-10-16 10:54:45,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states.
[2020-10-16 10:54:45,382 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 162 transitions.
[2020-10-16 10:54:45,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2020-10-16 10:54:45,382 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:54:45,382 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:54:45,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197,194 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:45,586 INFO L429 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:54:45,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:54:45,586 INFO L82 PathProgramCache]: Analyzing trace with hash -473673969, now seen corresponding path program 197 times
[2020-10-16 10:54:45,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:54:45,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639130044]
[2020-10-16 10:54:45,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:54:45,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:54:45,978 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:45,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639130044]
[2020-10-16 10:54:45,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324113289]
[2020-10-16 10:54:45,979 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:46,031 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s)
[2020-10-16 10:54:46,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:54:46,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core
[2020-10-16 10:54:46,032 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:54:46,042 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:46,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:54:46,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21
[2020-10-16 10:54:46,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265870980]
[2020-10-16 10:54:46,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states
[2020-10-16 10:54:46,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:54:46,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2020-10-16 10:54:46,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506
[2020-10-16 10:54:46,043 INFO L87 Difference]: Start difference. First operand 66 states and 162 transitions. Second operand 23 states.
[2020-10-16 10:54:46,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:54:46,649 INFO L93 Difference]: Finished difference Result 102 states and 237 transitions.
[2020-10-16 10:54:46,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states.
[2020-10-16 10:54:46,649 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 27
[2020-10-16 10:54:46,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:54:46,650 INFO L225 Difference]: With dead ends: 102
[2020-10-16 10:54:46,650 INFO L226 Difference]: Without dead ends: 96
[2020-10-16 10:54:46,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=553, Invalid=1169, Unknown=0, NotChecked=0, Total=1722
[2020-10-16 10:54:46,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states.
[2020-10-16 10:54:46,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 74.
[2020-10-16 10:54:46,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states.
[2020-10-16 10:54:46,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 181 transitions.
[2020-10-16 10:54:46,653 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 181 transitions. Word has length 27
[2020-10-16 10:54:46,653 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:54:46,653 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 181 transitions.
[2020-10-16 10:54:46,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states.
[2020-10-16 10:54:46,653 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 181 transitions.
[2020-10-16 10:54:46,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2020-10-16 10:54:46,653 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:54:46,653 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:54:46,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 195 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable198
[2020-10-16 10:54:46,854 INFO L429 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:54:46,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:54:46,855 INFO L82 PathProgramCache]: Analyzing trace with hash 2099543923, now seen corresponding path program 198 times
[2020-10-16 10:54:46,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:54:46,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110951521]
[2020-10-16 10:54:46,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:54:46,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:54:47,253 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:47,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110951521]
[2020-10-16 10:54:47,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449971821]
[2020-10-16 10:54:47,254 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:47,304 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s)
[2020-10-16 10:54:47,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:54:47,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core
[2020-10-16 10:54:47,307 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:54:47,334 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:54:47,345 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:47,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:54:47,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22
[2020-10-16 10:54:47,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065945976]
[2020-10-16 10:54:47,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states
[2020-10-16 10:54:47,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:54:47,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2020-10-16 10:54:47,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=423, Unknown=0, NotChecked=0, Total=552
[2020-10-16 10:54:47,346 INFO L87 Difference]: Start difference. First operand 74 states and 181 transitions. Second operand 24 states.
[2020-10-16 10:54:48,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:54:48,018 INFO L93 Difference]: Finished difference Result 122 states and 277 transitions.
[2020-10-16 10:54:48,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states.
[2020-10-16 10:54:48,019 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 27
[2020-10-16 10:54:48,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:54:48,020 INFO L225 Difference]: With dead ends: 122
[2020-10-16 10:54:48,020 INFO L226 Difference]: Without dead ends: 116
[2020-10-16 10:54:48,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=562, Invalid=1330, Unknown=0, NotChecked=0, Total=1892
[2020-10-16 10:54:48,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states.
[2020-10-16 10:54:48,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 72.
[2020-10-16 10:54:48,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states.
[2020-10-16 10:54:48,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 177 transitions.
[2020-10-16 10:54:48,022 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 177 transitions. Word has length 27
[2020-10-16 10:54:48,022 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:54:48,022 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 177 transitions.
[2020-10-16 10:54:48,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states.
[2020-10-16 10:54:48,022 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 177 transitions.
[2020-10-16 10:54:48,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2020-10-16 10:54:48,022 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:54:48,022 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:54:48,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 196 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable199
[2020-10-16 10:54:48,223 INFO L429 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:54:48,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:54:48,224 INFO L82 PathProgramCache]: Analyzing trace with hash 915619313, now seen corresponding path program 199 times
[2020-10-16 10:54:48,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:54:48,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42908927]
[2020-10-16 10:54:48,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:54:48,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:54:48,601 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:48,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42908927]
[2020-10-16 10:54:48,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459777839]
[2020-10-16 10:54:48,602 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:48,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:54:48,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core
[2020-10-16 10:54:48,652 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:54:48,674 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:48,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:54:48,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21
[2020-10-16 10:54:48,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145797005]
[2020-10-16 10:54:48,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states
[2020-10-16 10:54:48,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:54:48,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2020-10-16 10:54:48,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506
[2020-10-16 10:54:48,675 INFO L87 Difference]: Start difference. First operand 72 states and 177 transitions. Second operand 23 states.
[2020-10-16 10:54:49,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:54:49,401 INFO L93 Difference]: Finished difference Result 123 states and 281 transitions.
[2020-10-16 10:54:49,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states.
[2020-10-16 10:54:49,402 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 27
[2020-10-16 10:54:49,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:54:49,403 INFO L225 Difference]: With dead ends: 123
[2020-10-16 10:54:49,403 INFO L226 Difference]: Without dead ends: 117
[2020-10-16 10:54:49,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=565, Invalid=1415, Unknown=0, NotChecked=0, Total=1980
[2020-10-16 10:54:49,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states.
[2020-10-16 10:54:49,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 75.
[2020-10-16 10:54:49,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states.
[2020-10-16 10:54:49,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 185 transitions.
[2020-10-16 10:54:49,406 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 185 transitions. Word has length 27
[2020-10-16 10:54:49,406 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:54:49,406 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 185 transitions.
[2020-10-16 10:54:49,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states.
[2020-10-16 10:54:49,406 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 185 transitions.
[2020-10-16 10:54:49,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2020-10-16 10:54:49,406 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:54:49,406 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:54:49,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 197 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable200
[2020-10-16 10:54:49,607 INFO L429 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:54:49,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:54:49,608 INFO L82 PathProgramCache]: Analyzing trace with hash -632539307, now seen corresponding path program 200 times
[2020-10-16 10:54:49,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:54:49,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801083904]
[2020-10-16 10:54:49,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:54:49,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:54:49,992 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:49,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801083904]
[2020-10-16 10:54:49,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360064732]
[2020-10-16 10:54:49,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:50,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 10:54:50,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:54:50,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core
[2020-10-16 10:54:50,042 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:54:50,068 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:54:50,082 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:50,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:54:50,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22
[2020-10-16 10:54:50,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619823994]
[2020-10-16 10:54:50,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states
[2020-10-16 10:54:50,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:54:50,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2020-10-16 10:54:50,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552
[2020-10-16 10:54:50,083 INFO L87 Difference]: Start difference. First operand 75 states and 185 transitions. Second operand 24 states.
[2020-10-16 10:54:50,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:54:50,861 INFO L93 Difference]: Finished difference Result 139 states and 313 transitions.
[2020-10-16 10:54:50,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2020-10-16 10:54:50,862 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 27
[2020-10-16 10:54:50,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:54:50,862 INFO L225 Difference]: With dead ends: 139
[2020-10-16 10:54:50,862 INFO L226 Difference]: Without dead ends: 133
[2020-10-16 10:54:50,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=601, Invalid=1561, Unknown=0, NotChecked=0, Total=2162
[2020-10-16 10:54:50,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states.
[2020-10-16 10:54:50,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 74.
[2020-10-16 10:54:50,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states.
[2020-10-16 10:54:50,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 183 transitions.
[2020-10-16 10:54:50,866 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 183 transitions. Word has length 27
[2020-10-16 10:54:50,866 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:54:50,866 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 183 transitions.
[2020-10-16 10:54:50,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states.
[2020-10-16 10:54:50,866 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 183 transitions.
[2020-10-16 10:54:50,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2020-10-16 10:54:50,866 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:54:50,866 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:54:51,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 198 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable201
[2020-10-16 10:54:51,075 INFO L429 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:54:51,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:54:51,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1934328493, now seen corresponding path program 201 times
[2020-10-16 10:54:51,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:54:51,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847122656]
[2020-10-16 10:54:51,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:54:51,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:54:51,430 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:51,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847122656]
[2020-10-16 10:54:51,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441043404]
[2020-10-16 10:54:51,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:51,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s)
[2020-10-16 10:54:51,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:54:51,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core
[2020-10-16 10:54:51,487 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:54:51,502 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:51,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:54:51,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21
[2020-10-16 10:54:51,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400706573]
[2020-10-16 10:54:51,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states
[2020-10-16 10:54:51,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:54:51,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2020-10-16 10:54:51,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506
[2020-10-16 10:54:51,503 INFO L87 Difference]: Start difference. First operand 74 states and 183 transitions. Second operand 23 states.
[2020-10-16 10:54:52,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:54:52,284 INFO L93 Difference]: Finished difference Result 139 states and 315 transitions.
[2020-10-16 10:54:52,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states.
[2020-10-16 10:54:52,284 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 27
[2020-10-16 10:54:52,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:54:52,285 INFO L225 Difference]: With dead ends: 139
[2020-10-16 10:54:52,285 INFO L226 Difference]: Without dead ends: 133
[2020-10-16 10:54:52,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=618, Invalid=1638, Unknown=0, NotChecked=0, Total=2256
[2020-10-16 10:54:52,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states.
[2020-10-16 10:54:52,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 77.
[2020-10-16 10:54:52,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states.
[2020-10-16 10:54:52,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 191 transitions.
[2020-10-16 10:54:52,288 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 191 transitions. Word has length 27
[2020-10-16 10:54:52,288 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:54:52,288 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 191 transitions.
[2020-10-16 10:54:52,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states.
[2020-10-16 10:54:52,288 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 191 transitions.
[2020-10-16 10:54:52,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2020-10-16 10:54:52,289 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:54:52,289 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:54:52,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202,199 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:52,492 INFO L429 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:54:52,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:54:52,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1550090167, now seen corresponding path program 202 times
[2020-10-16 10:54:52,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:54:52,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133392554]
[2020-10-16 10:54:52,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:54:52,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:54:52,851 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:52,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133392554]
[2020-10-16 10:54:52,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126435261]
[2020-10-16 10:54:52,852 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:52,899 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 10:54:52,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:54:52,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core
[2020-10-16 10:54:52,901 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:54:52,928 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:54:52,943 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:52,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:54:52,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22
[2020-10-16 10:54:52,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442590042]
[2020-10-16 10:54:52,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states
[2020-10-16 10:54:52,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:54:52,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2020-10-16 10:54:52,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552
[2020-10-16 10:54:52,945 INFO L87 Difference]: Start difference. First operand 77 states and 191 transitions. Second operand 24 states.
[2020-10-16 10:54:53,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:54:53,849 INFO L93 Difference]: Finished difference Result 136 states and 309 transitions.
[2020-10-16 10:54:53,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states.
[2020-10-16 10:54:53,849 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 27
[2020-10-16 10:54:53,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:54:53,850 INFO L225 Difference]: With dead ends: 136
[2020-10-16 10:54:53,850 INFO L226 Difference]: Without dead ends: 130
[2020-10-16 10:54:53,850 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=622, Invalid=1730, Unknown=0, NotChecked=0, Total=2352
[2020-10-16 10:54:53,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states.
[2020-10-16 10:54:53,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 76.
[2020-10-16 10:54:53,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states.
[2020-10-16 10:54:53,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 189 transitions.
[2020-10-16 10:54:53,852 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 189 transitions. Word has length 27
[2020-10-16 10:54:53,853 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:54:53,853 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 189 transitions.
[2020-10-16 10:54:53,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states.
[2020-10-16 10:54:53,853 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 189 transitions.
[2020-10-16 10:54:53,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2020-10-16 10:54:53,853 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:54:53,853 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:54:54,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 200 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable203
[2020-10-16 10:54:54,054 INFO L429 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:54:54,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:54:54,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1602366773, now seen corresponding path program 203 times
[2020-10-16 10:54:54,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:54:54,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844864422]
[2020-10-16 10:54:54,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:54:54,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:54:54,394 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:54,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844864422]
[2020-10-16 10:54:54,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593836830]
[2020-10-16 10:54:54,394 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:54,445 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s)
[2020-10-16 10:54:54,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:54:54,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core
[2020-10-16 10:54:54,447 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:54:54,471 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:54,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:54:54,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21
[2020-10-16 10:54:54,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201589264]
[2020-10-16 10:54:54,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states
[2020-10-16 10:54:54,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:54:54,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2020-10-16 10:54:54,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506
[2020-10-16 10:54:54,472 INFO L87 Difference]: Start difference. First operand 76 states and 189 transitions. Second operand 23 states.
[2020-10-16 10:54:55,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:54:55,339 INFO L93 Difference]: Finished difference Result 137 states and 313 transitions.
[2020-10-16 10:54:55,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states.
[2020-10-16 10:54:55,340 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 27
[2020-10-16 10:54:55,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:54:55,340 INFO L225 Difference]: With dead ends: 137
[2020-10-16 10:54:55,341 INFO L226 Difference]: Without dead ends: 131
[2020-10-16 10:54:55,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=654, Invalid=1796, Unknown=0, NotChecked=0, Total=2450
[2020-10-16 10:54:55,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states.
[2020-10-16 10:54:55,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 79.
[2020-10-16 10:54:55,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states.
[2020-10-16 10:54:55,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 197 transitions.
[2020-10-16 10:54:55,344 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 197 transitions. Word has length 27
[2020-10-16 10:54:55,344 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:54:55,344 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 197 transitions.
[2020-10-16 10:54:55,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states.
[2020-10-16 10:54:55,344 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 197 transitions.
[2020-10-16 10:54:55,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2020-10-16 10:54:55,345 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:54:55,345 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:54:55,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204,201 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:55,545 INFO L429 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:54:55,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:54:55,546 INFO L82 PathProgramCache]: Analyzing trace with hash -816351079, now seen corresponding path program 204 times
[2020-10-16 10:54:55,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:54:55,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350533260]
[2020-10-16 10:54:55,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:54:55,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:54:55,891 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:55,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350533260]
[2020-10-16 10:54:55,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755199509]
[2020-10-16 10:54:55,891 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:55,961 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s)
[2020-10-16 10:54:55,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:54:55,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core
[2020-10-16 10:54:55,963 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:54:55,993 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:54:56,010 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:56,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:54:56,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22
[2020-10-16 10:54:56,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539622561]
[2020-10-16 10:54:56,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states
[2020-10-16 10:54:56,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:54:56,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2020-10-16 10:54:56,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552
[2020-10-16 10:54:56,012 INFO L87 Difference]: Start difference. First operand 79 states and 197 transitions. Second operand 24 states.
[2020-10-16 10:54:57,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:54:57,010 INFO L93 Difference]: Finished difference Result 134 states and 307 transitions.
[2020-10-16 10:54:57,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states.
[2020-10-16 10:54:57,011 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 27
[2020-10-16 10:54:57,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:54:57,012 INFO L225 Difference]: With dead ends: 134
[2020-10-16 10:54:57,012 INFO L226 Difference]: Without dead ends: 128
[2020-10-16 10:54:57,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=659, Invalid=1891, Unknown=0, NotChecked=0, Total=2550
[2020-10-16 10:54:57,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states.
[2020-10-16 10:54:57,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 78.
[2020-10-16 10:54:57,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states.
[2020-10-16 10:54:57,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 195 transitions.
[2020-10-16 10:54:57,015 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 195 transitions. Word has length 27
[2020-10-16 10:54:57,015 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:54:57,015 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 195 transitions.
[2020-10-16 10:54:57,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states.
[2020-10-16 10:54:57,015 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 195 transitions.
[2020-10-16 10:54:57,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2020-10-16 10:54:57,016 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:54:57,016 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:54:57,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 202 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable205
[2020-10-16 10:54:57,219 INFO L429 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:54:57,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:54:57,220 INFO L82 PathProgramCache]: Analyzing trace with hash -128029289, now seen corresponding path program 205 times
[2020-10-16 10:54:57,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:54:57,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489930410]
[2020-10-16 10:54:57,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:54:57,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:54:57,551 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:57,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489930410]
[2020-10-16 10:54:57,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460018830]
[2020-10-16 10:54:57,551 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:57,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:54:57,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core
[2020-10-16 10:54:57,602 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:54:57,622 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:57,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:54:57,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21
[2020-10-16 10:54:57,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53372094]
[2020-10-16 10:54:57,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states
[2020-10-16 10:54:57,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:54:57,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2020-10-16 10:54:57,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506
[2020-10-16 10:54:57,623 INFO L87 Difference]: Start difference. First operand 78 states and 195 transitions. Second operand 23 states.
[2020-10-16 10:54:58,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:54:58,592 INFO L93 Difference]: Finished difference Result 135 states and 311 transitions.
[2020-10-16 10:54:58,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states.
[2020-10-16 10:54:58,593 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 27
[2020-10-16 10:54:58,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:54:58,593 INFO L225 Difference]: With dead ends: 135
[2020-10-16 10:54:58,593 INFO L226 Difference]: Without dead ends: 129
[2020-10-16 10:54:58,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 620 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=706, Invalid=1946, Unknown=0, NotChecked=0, Total=2652
[2020-10-16 10:54:58,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states.
[2020-10-16 10:54:58,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 81.
[2020-10-16 10:54:58,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states.
[2020-10-16 10:54:58,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 203 transitions.
[2020-10-16 10:54:58,596 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 203 transitions. Word has length 27
[2020-10-16 10:54:58,596 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:54:58,596 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 203 transitions.
[2020-10-16 10:54:58,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states.
[2020-10-16 10:54:58,596 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 203 transitions.
[2020-10-16 10:54:58,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2020-10-16 10:54:58,597 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:54:58,597 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:54:58,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206,203 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:58,798 INFO L429 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:54:58,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:54:58,798 INFO L82 PathProgramCache]: Analyzing trace with hash 857162235, now seen corresponding path program 206 times
[2020-10-16 10:54:58,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:54:58,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374236353]
[2020-10-16 10:54:58,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:54:58,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:54:59,136 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:59,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374236353]
[2020-10-16 10:54:59,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114537667]
[2020-10-16 10:54:59,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:54:59,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 10:54:59,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:54:59,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core
[2020-10-16 10:54:59,188 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:54:59,215 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:54:59,231 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:54:59,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:54:59,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22
[2020-10-16 10:54:59,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026471093]
[2020-10-16 10:54:59,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states
[2020-10-16 10:54:59,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:54:59,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2020-10-16 10:54:59,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552
[2020-10-16 10:54:59,233 INFO L87 Difference]: Start difference. First operand 81 states and 203 transitions. Second operand 24 states.
[2020-10-16 10:55:00,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:55:00,327 INFO L93 Difference]: Finished difference Result 132 states and 305 transitions.
[2020-10-16 10:55:00,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states.
[2020-10-16 10:55:00,328 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 27
[2020-10-16 10:55:00,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:55:00,328 INFO L225 Difference]: With dead ends: 132
[2020-10-16 10:55:00,328 INFO L226 Difference]: Without dead ends: 126
[2020-10-16 10:55:00,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 633 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=712, Invalid=2044, Unknown=0, NotChecked=0, Total=2756
[2020-10-16 10:55:00,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states.
[2020-10-16 10:55:00,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 80.
[2020-10-16 10:55:00,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states.
[2020-10-16 10:55:00,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 201 transitions.
[2020-10-16 10:55:00,330 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 201 transitions. Word has length 27
[2020-10-16 10:55:00,330 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:55:00,330 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 201 transitions.
[2020-10-16 10:55:00,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states.
[2020-10-16 10:55:00,330 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 201 transitions.
[2020-10-16 10:55:00,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2020-10-16 10:55:00,331 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:55:00,331 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:55:00,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207,204 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:55:00,531 INFO L429 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:55:00,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:55:00,532 INFO L82 PathProgramCache]: Analyzing trace with hash -759996807, now seen corresponding path program 207 times
[2020-10-16 10:55:00,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:55:00,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070130221]
[2020-10-16 10:55:00,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:55:00,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:55:00,857 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:00,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070130221]
[2020-10-16 10:55:00,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5111844]
[2020-10-16 10:55:00,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:55:00,912 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s)
[2020-10-16 10:55:00,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:55:00,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core
[2020-10-16 10:55:00,914 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:55:00,935 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:00,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:55:00,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21
[2020-10-16 10:55:00,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037271928]
[2020-10-16 10:55:00,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states
[2020-10-16 10:55:00,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:55:00,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2020-10-16 10:55:00,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506
[2020-10-16 10:55:00,937 INFO L87 Difference]: Start difference. First operand 80 states and 201 transitions. Second operand 23 states.
[2020-10-16 10:55:01,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:55:01,956 INFO L93 Difference]: Finished difference Result 133 states and 309 transitions.
[2020-10-16 10:55:01,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states.
[2020-10-16 10:55:01,957 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 27
[2020-10-16 10:55:01,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:55:01,958 INFO L225 Difference]: With dead ends: 133
[2020-10-16 10:55:01,958 INFO L226 Difference]: Without dead ends: 127
[2020-10-16 10:55:01,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 704 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=774, Invalid=2088, Unknown=0, NotChecked=0, Total=2862
[2020-10-16 10:55:01,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states.
[2020-10-16 10:55:01,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 83.
[2020-10-16 10:55:01,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states.
[2020-10-16 10:55:01,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 209 transitions.
[2020-10-16 10:55:01,961 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 209 transitions. Word has length 27
[2020-10-16 10:55:01,961 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:55:01,961 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 209 transitions.
[2020-10-16 10:55:01,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states.
[2020-10-16 10:55:01,961 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 209 transitions.
[2020-10-16 10:55:01,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2020-10-16 10:55:01,961 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:55:01,961 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:55:02,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208,205 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:55:02,162 INFO L429 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:55:02,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:55:02,163 INFO L82 PathProgramCache]: Analyzing trace with hash 496892893, now seen corresponding path program 208 times
[2020-10-16 10:55:02,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:55:02,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600345940]
[2020-10-16 10:55:02,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:55:02,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:55:02,491 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:02,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600345940]
[2020-10-16 10:55:02,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201552004]
[2020-10-16 10:55:02,492 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:55:02,540 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 10:55:02,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:55:02,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core
[2020-10-16 10:55:02,542 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:55:02,570 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:55:02,588 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:02,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:55:02,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22
[2020-10-16 10:55:02,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847025742]
[2020-10-16 10:55:02,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states
[2020-10-16 10:55:02,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:55:02,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2020-10-16 10:55:02,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552
[2020-10-16 10:55:02,589 INFO L87 Difference]: Start difference. First operand 83 states and 209 transitions. Second operand 24 states.
[2020-10-16 10:55:03,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:55:03,795 INFO L93 Difference]: Finished difference Result 130 states and 303 transitions.
[2020-10-16 10:55:03,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states.
[2020-10-16 10:55:03,796 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 27
[2020-10-16 10:55:03,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:55:03,797 INFO L225 Difference]: With dead ends: 130
[2020-10-16 10:55:03,797 INFO L226 Difference]: Without dead ends: 124
[2020-10-16 10:55:03,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=781, Invalid=2189, Unknown=0, NotChecked=0, Total=2970
[2020-10-16 10:55:03,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states.
[2020-10-16 10:55:03,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 82.
[2020-10-16 10:55:03,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states.
[2020-10-16 10:55:03,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 207 transitions.
[2020-10-16 10:55:03,799 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 207 transitions. Word has length 27
[2020-10-16 10:55:03,799 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:55:03,799 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 207 transitions.
[2020-10-16 10:55:03,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states.
[2020-10-16 10:55:03,799 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 207 transitions.
[2020-10-16 10:55:03,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2020-10-16 10:55:03,800 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:55:03,800 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:55:04,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209,206 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:55:04,001 INFO L429 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:55:04,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:55:04,001 INFO L82 PathProgramCache]: Analyzing trace with hash 2113085403, now seen corresponding path program 209 times
[2020-10-16 10:55:04,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:55:04,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949083842]
[2020-10-16 10:55:04,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:55:04,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:55:04,314 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:04,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949083842]
[2020-10-16 10:55:04,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886166249]
[2020-10-16 10:55:04,314 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:55:04,366 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s)
[2020-10-16 10:55:04,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:55:04,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core
[2020-10-16 10:55:04,368 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:55:04,391 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:04,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:55:04,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21
[2020-10-16 10:55:04,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515657303]
[2020-10-16 10:55:04,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states
[2020-10-16 10:55:04,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:55:04,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2020-10-16 10:55:04,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506
[2020-10-16 10:55:04,392 INFO L87 Difference]: Start difference. First operand 82 states and 207 transitions. Second operand 23 states.
[2020-10-16 10:55:05,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:55:05,482 INFO L93 Difference]: Finished difference Result 131 states and 307 transitions.
[2020-10-16 10:55:05,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states.
[2020-10-16 10:55:05,483 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 27
[2020-10-16 10:55:05,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:55:05,484 INFO L225 Difference]: With dead ends: 131
[2020-10-16 10:55:05,484 INFO L226 Difference]: Without dead ends: 125
[2020-10-16 10:55:05,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=858, Invalid=2222, Unknown=0, NotChecked=0, Total=3080
[2020-10-16 10:55:05,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states.
[2020-10-16 10:55:05,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 85.
[2020-10-16 10:55:05,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states.
[2020-10-16 10:55:05,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 215 transitions.
[2020-10-16 10:55:05,486 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 215 transitions. Word has length 27
[2020-10-16 10:55:05,486 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:55:05,487 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 215 transitions.
[2020-10-16 10:55:05,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states.
[2020-10-16 10:55:05,487 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 215 transitions.
[2020-10-16 10:55:05,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2020-10-16 10:55:05,487 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:55:05,487 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:55:05,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 207 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable210
[2020-10-16 10:55:05,688 INFO L429 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:55:05,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:55:05,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1662138817, now seen corresponding path program 210 times
[2020-10-16 10:55:05,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:55:05,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344547273]
[2020-10-16 10:55:05,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:55:05,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:55:06,003 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:06,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344547273]
[2020-10-16 10:55:06,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441535738]
[2020-10-16 10:55:06,004 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:55:06,059 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s)
[2020-10-16 10:55:06,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:55:06,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core
[2020-10-16 10:55:06,061 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:55:06,090 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:55:06,109 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:06,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:55:06,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22
[2020-10-16 10:55:06,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537554473]
[2020-10-16 10:55:06,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states
[2020-10-16 10:55:06,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:55:06,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2020-10-16 10:55:06,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552
[2020-10-16 10:55:06,110 INFO L87 Difference]: Start difference. First operand 85 states and 215 transitions. Second operand 24 states.
[2020-10-16 10:55:07,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:55:07,434 INFO L93 Difference]: Finished difference Result 128 states and 301 transitions.
[2020-10-16 10:55:07,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states.
[2020-10-16 10:55:07,435 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 27
[2020-10-16 10:55:07,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:55:07,436 INFO L225 Difference]: With dead ends: 128
[2020-10-16 10:55:07,436 INFO L226 Difference]: Without dead ends: 122
[2020-10-16 10:55:07,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 799 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=866, Invalid=2326, Unknown=0, NotChecked=0, Total=3192
[2020-10-16 10:55:07,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states.
[2020-10-16 10:55:07,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 84.
[2020-10-16 10:55:07,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states.
[2020-10-16 10:55:07,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 213 transitions.
[2020-10-16 10:55:07,438 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 213 transitions. Word has length 27
[2020-10-16 10:55:07,438 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:55:07,438 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 213 transitions.
[2020-10-16 10:55:07,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states.
[2020-10-16 10:55:07,438 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 213 transitions.
[2020-10-16 10:55:07,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2020-10-16 10:55:07,439 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:55:07,439 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:55:07,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 208 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable211
[2020-10-16 10:55:07,640 INFO L429 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:55:07,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:55:07,640 INFO L82 PathProgramCache]: Analyzing trace with hash -6827587, now seen corresponding path program 211 times
[2020-10-16 10:55:07,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:55:07,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315170471]
[2020-10-16 10:55:07,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:55:07,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:55:07,950 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:07,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315170471]
[2020-10-16 10:55:07,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706046773]
[2020-10-16 10:55:07,951 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:55:07,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:55:08,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core
[2020-10-16 10:55:08,001 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:55:08,026 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:08,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:55:08,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21
[2020-10-16 10:55:08,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777301907]
[2020-10-16 10:55:08,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states
[2020-10-16 10:55:08,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:55:08,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2020-10-16 10:55:08,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506
[2020-10-16 10:55:08,027 INFO L87 Difference]: Start difference. First operand 84 states and 213 transitions. Second operand 23 states.
[2020-10-16 10:55:09,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:55:09,215 INFO L93 Difference]: Finished difference Result 129 states and 305 transitions.
[2020-10-16 10:55:09,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states.
[2020-10-16 10:55:09,216 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 27
[2020-10-16 10:55:09,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:55:09,217 INFO L225 Difference]: With dead ends: 129
[2020-10-16 10:55:09,217 INFO L226 Difference]: Without dead ends: 123
[2020-10-16 10:55:09,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=958, Invalid=2348, Unknown=0, NotChecked=0, Total=3306
[2020-10-16 10:55:09,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states.
[2020-10-16 10:55:09,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 87.
[2020-10-16 10:55:09,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states.
[2020-10-16 10:55:09,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 221 transitions.
[2020-10-16 10:55:09,220 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 221 transitions. Word has length 27
[2020-10-16 10:55:09,220 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:55:09,220 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 221 transitions.
[2020-10-16 10:55:09,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states.
[2020-10-16 10:55:09,220 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 221 transitions.
[2020-10-16 10:55:09,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2020-10-16 10:55:09,220 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:55:09,221 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:55:09,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 209 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable212
[2020-10-16 10:55:09,421 INFO L429 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:55:09,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:55:09,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1726955231, now seen corresponding path program 212 times
[2020-10-16 10:55:09,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:55:09,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389715224]
[2020-10-16 10:55:09,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:55:09,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:55:09,730 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:09,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389715224]
[2020-10-16 10:55:09,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230925001]
[2020-10-16 10:55:09,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:55:09,776 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 10:55:09,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:55:09,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core
[2020-10-16 10:55:09,778 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:55:09,807 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:55:09,827 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:09,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:55:09,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22
[2020-10-16 10:55:09,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697201644]
[2020-10-16 10:55:09,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states
[2020-10-16 10:55:09,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:55:09,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2020-10-16 10:55:09,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552
[2020-10-16 10:55:09,828 INFO L87 Difference]: Start difference. First operand 87 states and 221 transitions. Second operand 24 states.
[2020-10-16 10:55:11,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:55:11,262 INFO L93 Difference]: Finished difference Result 126 states and 299 transitions.
[2020-10-16 10:55:11,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states.
[2020-10-16 10:55:11,263 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 27
[2020-10-16 10:55:11,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:55:11,264 INFO L225 Difference]: With dead ends: 126
[2020-10-16 10:55:11,264 INFO L226 Difference]: Without dead ends: 120
[2020-10-16 10:55:11,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 888 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=967, Invalid=2455, Unknown=0, NotChecked=0, Total=3422
[2020-10-16 10:55:11,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states.
[2020-10-16 10:55:11,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 86.
[2020-10-16 10:55:11,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states.
[2020-10-16 10:55:11,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 219 transitions.
[2020-10-16 10:55:11,267 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 219 transitions. Word has length 27
[2020-10-16 10:55:11,267 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:55:11,267 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 219 transitions.
[2020-10-16 10:55:11,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states.
[2020-10-16 10:55:11,267 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 219 transitions.
[2020-10-16 10:55:11,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2020-10-16 10:55:11,267 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:55:11,267 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:55:11,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 210 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable213
[2020-10-16 10:55:11,468 INFO L429 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:55:11,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:55:11,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1255959521, now seen corresponding path program 213 times
[2020-10-16 10:55:11,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:55:11,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778829964]
[2020-10-16 10:55:11,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:55:11,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:55:11,773 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:11,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778829964]
[2020-10-16 10:55:11,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241862236]
[2020-10-16 10:55:11,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:55:11,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s)
[2020-10-16 10:55:11,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:55:11,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core
[2020-10-16 10:55:11,828 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:55:11,854 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:11,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:55:11,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21
[2020-10-16 10:55:11,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569098203]
[2020-10-16 10:55:11,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states
[2020-10-16 10:55:11,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:55:11,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2020-10-16 10:55:11,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506
[2020-10-16 10:55:11,856 INFO L87 Difference]: Start difference. First operand 86 states and 219 transitions. Second operand 23 states.
[2020-10-16 10:55:13,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:55:13,114 INFO L93 Difference]: Finished difference Result 127 states and 303 transitions.
[2020-10-16 10:55:13,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states.
[2020-10-16 10:55:13,114 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 27
[2020-10-16 10:55:13,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:55:13,115 INFO L225 Difference]: With dead ends: 127
[2020-10-16 10:55:13,115 INFO L226 Difference]: Without dead ends: 121
[2020-10-16 10:55:13,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 980 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1074, Invalid=2466, Unknown=0, NotChecked=0, Total=3540
[2020-10-16 10:55:13,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states.
[2020-10-16 10:55:13,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 89.
[2020-10-16 10:55:13,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states.
[2020-10-16 10:55:13,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 227 transitions.
[2020-10-16 10:55:13,118 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 227 transitions. Word has length 27
[2020-10-16 10:55:13,118 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:55:13,118 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 227 transitions.
[2020-10-16 10:55:13,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states.
[2020-10-16 10:55:13,118 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 227 transitions.
[2020-10-16 10:55:13,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2020-10-16 10:55:13,118 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:55:13,119 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:55:13,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214,211 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:55:13,319 INFO L429 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:55:13,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:55:13,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1239872381, now seen corresponding path program 214 times
[2020-10-16 10:55:13,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:55:13,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073564887]
[2020-10-16 10:55:13,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:55:13,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:55:13,618 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:13,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073564887]
[2020-10-16 10:55:13,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15102052]
[2020-10-16 10:55:13,619 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:55:13,669 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 10:55:13,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:55:13,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core
[2020-10-16 10:55:13,670 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:55:13,701 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:55:13,721 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:13,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:55:13,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22
[2020-10-16 10:55:13,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922106859]
[2020-10-16 10:55:13,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states
[2020-10-16 10:55:13,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:55:13,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2020-10-16 10:55:13,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552
[2020-10-16 10:55:13,723 INFO L87 Difference]: Start difference. First operand 89 states and 227 transitions. Second operand 24 states.
[2020-10-16 10:55:15,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:55:15,286 INFO L93 Difference]: Finished difference Result 124 states and 297 transitions.
[2020-10-16 10:55:15,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states.
[2020-10-16 10:55:15,286 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 27
[2020-10-16 10:55:15,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:55:15,287 INFO L225 Difference]: With dead ends: 124
[2020-10-16 10:55:15,287 INFO L226 Difference]: Without dead ends: 118
[2020-10-16 10:55:15,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 981 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1084, Invalid=2576, Unknown=0, NotChecked=0, Total=3660
[2020-10-16 10:55:15,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states.
[2020-10-16 10:55:15,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 88.
[2020-10-16 10:55:15,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states.
[2020-10-16 10:55:15,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 225 transitions.
[2020-10-16 10:55:15,290 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 225 transitions. Word has length 27
[2020-10-16 10:55:15,290 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:55:15,290 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 225 transitions.
[2020-10-16 10:55:15,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states.
[2020-10-16 10:55:15,291 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 225 transitions.
[2020-10-16 10:55:15,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2020-10-16 10:55:15,291 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:55:15,291 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:55:15,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 212 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable215
[2020-10-16 10:55:15,500 INFO L429 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:55:15,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:55:15,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1239382271, now seen corresponding path program 215 times
[2020-10-16 10:55:15,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:55:15,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294385317]
[2020-10-16 10:55:15,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:55:15,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:55:15,803 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:15,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294385317]
[2020-10-16 10:55:15,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327321024]
[2020-10-16 10:55:15,804 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:55:15,856 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s)
[2020-10-16 10:55:15,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:55:15,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core
[2020-10-16 10:55:15,858 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:55:15,887 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:15,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:55:15,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21
[2020-10-16 10:55:15,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48389190]
[2020-10-16 10:55:15,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states
[2020-10-16 10:55:15,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:55:15,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2020-10-16 10:55:15,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506
[2020-10-16 10:55:15,889 INFO L87 Difference]: Start difference. First operand 88 states and 225 transitions. Second operand 23 states.
[2020-10-16 10:55:17,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:55:17,205 INFO L93 Difference]: Finished difference Result 144 states and 347 transitions.
[2020-10-16 10:55:17,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states.
[2020-10-16 10:55:17,206 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 27
[2020-10-16 10:55:17,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:55:17,207 INFO L225 Difference]: With dead ends: 144
[2020-10-16 10:55:17,207 INFO L226 Difference]: Without dead ends: 138
[2020-10-16 10:55:17,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1080 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1206, Invalid=2576, Unknown=0, NotChecked=0, Total=3782
[2020-10-16 10:55:17,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states.
[2020-10-16 10:55:17,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 94.
[2020-10-16 10:55:17,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states.
[2020-10-16 10:55:17,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 245 transitions.
[2020-10-16 10:55:17,210 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 245 transitions. Word has length 27
[2020-10-16 10:55:17,210 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:55:17,210 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 245 transitions.
[2020-10-16 10:55:17,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states.
[2020-10-16 10:55:17,210 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 245 transitions.
[2020-10-16 10:55:17,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2020-10-16 10:55:17,210 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:55:17,211 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:55:17,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216,213 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:55:17,418 INFO L429 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:55:17,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:55:17,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1239365531, now seen corresponding path program 216 times
[2020-10-16 10:55:17,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:55:17,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414367143]
[2020-10-16 10:55:17,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:55:17,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:55:17,718 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:17,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414367143]
[2020-10-16 10:55:17,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089001962]
[2020-10-16 10:55:17,718 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:55:17,773 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s)
[2020-10-16 10:55:17,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:55:17,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core
[2020-10-16 10:55:17,775 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:55:17,805 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:55:17,825 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:17,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:55:17,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22
[2020-10-16 10:55:17,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857582344]
[2020-10-16 10:55:17,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states
[2020-10-16 10:55:17,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:55:17,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2020-10-16 10:55:17,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=423, Unknown=0, NotChecked=0, Total=552
[2020-10-16 10:55:17,827 INFO L87 Difference]: Start difference. First operand 94 states and 245 transitions. Second operand 24 states.
[2020-10-16 10:55:19,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:55:19,377 INFO L93 Difference]: Finished difference Result 125 states and 303 transitions.
[2020-10-16 10:55:19,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states.
[2020-10-16 10:55:19,377 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 27
[2020-10-16 10:55:19,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:55:19,378 INFO L225 Difference]: With dead ends: 125
[2020-10-16 10:55:19,378 INFO L226 Difference]: Without dead ends: 117
[2020-10-16 10:55:19,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1079 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1217, Invalid=2689, Unknown=0, NotChecked=0, Total=3906
[2020-10-16 10:55:19,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states.
[2020-10-16 10:55:19,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 91.
[2020-10-16 10:55:19,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states.
[2020-10-16 10:55:19,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 233 transitions.
[2020-10-16 10:55:19,380 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 233 transitions. Word has length 27
[2020-10-16 10:55:19,380 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:55:19,380 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 233 transitions.
[2020-10-16 10:55:19,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states.
[2020-10-16 10:55:19,381 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 233 transitions.
[2020-10-16 10:55:19,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2020-10-16 10:55:19,381 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:55:19,381 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:55:19,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 214 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable217
[2020-10-16 10:55:19,582 INFO L429 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:55:19,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:55:19,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1945349894, now seen corresponding path program 217 times
[2020-10-16 10:55:19,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:55:19,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203476536]
[2020-10-16 10:55:19,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:55:19,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:55:20,022 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:20,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203476536]
[2020-10-16 10:55:20,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849442500]
[2020-10-16 10:55:20,023 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:55:20,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:55:20,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 24 conjunts are in the unsatisfiable core
[2020-10-16 10:55:20,074 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:55:20,090 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:20,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:55:20,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22
[2020-10-16 10:55:20,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205967087]
[2020-10-16 10:55:20,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states
[2020-10-16 10:55:20,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:55:20,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2020-10-16 10:55:20,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552
[2020-10-16 10:55:20,091 INFO L87 Difference]: Start difference. First operand 91 states and 233 transitions. Second operand 24 states.
[2020-10-16 10:55:20,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:55:20,830 INFO L93 Difference]: Finished difference Result 144 states and 339 transitions.
[2020-10-16 10:55:20,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states.
[2020-10-16 10:55:20,831 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 28
[2020-10-16 10:55:20,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:55:20,832 INFO L225 Difference]: With dead ends: 144
[2020-10-16 10:55:20,832 INFO L226 Difference]: Without dead ends: 138
[2020-10-16 10:55:20,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=603, Invalid=1377, Unknown=0, NotChecked=0, Total=1980
[2020-10-16 10:55:20,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states.
[2020-10-16 10:55:20,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 93.
[2020-10-16 10:55:20,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states.
[2020-10-16 10:55:20,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 237 transitions.
[2020-10-16 10:55:20,834 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 237 transitions. Word has length 28
[2020-10-16 10:55:20,834 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:55:20,834 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 237 transitions.
[2020-10-16 10:55:20,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states.
[2020-10-16 10:55:20,834 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 237 transitions.
[2020-10-16 10:55:20,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2020-10-16 10:55:20,834 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:55:20,835 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:55:21,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218,215 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:55:21,035 INFO L429 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:55:21,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:55:21,036 INFO L82 PathProgramCache]: Analyzing trace with hash 627867998, now seen corresponding path program 218 times
[2020-10-16 10:55:21,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:55:21,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88868062]
[2020-10-16 10:55:21,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:55:21,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:55:21,488 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:21,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88868062]
[2020-10-16 10:55:21,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912191399]
[2020-10-16 10:55:21,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:55:21,538 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 10:55:21,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:55:21,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 24 conjunts are in the unsatisfiable core
[2020-10-16 10:55:21,540 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:55:21,567 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:55:21,581 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:21,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:55:21,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23
[2020-10-16 10:55:21,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829855175]
[2020-10-16 10:55:21,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states
[2020-10-16 10:55:21,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:55:21,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2020-10-16 10:55:21,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600
[2020-10-16 10:55:21,583 INFO L87 Difference]: Start difference. First operand 93 states and 237 transitions. Second operand 25 states.
[2020-10-16 10:55:22,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:55:22,439 INFO L93 Difference]: Finished difference Result 141 states and 333 transitions.
[2020-10-16 10:55:22,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2020-10-16 10:55:22,441 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 28
[2020-10-16 10:55:22,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:55:22,441 INFO L225 Difference]: With dead ends: 141
[2020-10-16 10:55:22,441 INFO L226 Difference]: Without dead ends: 135
[2020-10-16 10:55:22,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=653, Invalid=1603, Unknown=0, NotChecked=0, Total=2256
[2020-10-16 10:55:22,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states.
[2020-10-16 10:55:22,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 92.
[2020-10-16 10:55:22,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states.
[2020-10-16 10:55:22,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 235 transitions.
[2020-10-16 10:55:22,444 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 235 transitions. Word has length 28
[2020-10-16 10:55:22,444 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:55:22,444 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 235 transitions.
[2020-10-16 10:55:22,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states.
[2020-10-16 10:55:22,444 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 235 transitions.
[2020-10-16 10:55:22,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2020-10-16 10:55:22,444 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:55:22,444 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:55:22,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 216 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable219
[2020-10-16 10:55:22,645 INFO L429 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:55:22,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:55:22,646 INFO L82 PathProgramCache]: Analyzing trace with hash -556056612, now seen corresponding path program 219 times
[2020-10-16 10:55:22,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:55:22,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592637600]
[2020-10-16 10:55:22,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:55:22,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:55:23,065 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:23,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592637600]
[2020-10-16 10:55:23,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398045063]
[2020-10-16 10:55:23,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:55:23,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s)
[2020-10-16 10:55:23,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:55:23,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 24 conjunts are in the unsatisfiable core
[2020-10-16 10:55:23,122 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:55:23,136 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:23,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:55:23,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22
[2020-10-16 10:55:23,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132908786]
[2020-10-16 10:55:23,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states
[2020-10-16 10:55:23,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:55:23,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2020-10-16 10:55:23,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552
[2020-10-16 10:55:23,137 INFO L87 Difference]: Start difference. First operand 92 states and 235 transitions. Second operand 24 states.
[2020-10-16 10:55:23,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:55:23,955 INFO L93 Difference]: Finished difference Result 138 states and 327 transitions.
[2020-10-16 10:55:23,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states.
[2020-10-16 10:55:23,956 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 28
[2020-10-16 10:55:23,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:55:23,957 INFO L225 Difference]: With dead ends: 138
[2020-10-16 10:55:23,957 INFO L226 Difference]: Without dead ends: 132
[2020-10-16 10:55:23,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=608, Invalid=1554, Unknown=0, NotChecked=0, Total=2162
[2020-10-16 10:55:23,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states.
[2020-10-16 10:55:23,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 93.
[2020-10-16 10:55:23,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states.
[2020-10-16 10:55:23,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 237 transitions.
[2020-10-16 10:55:23,960 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 237 transitions. Word has length 28
[2020-10-16 10:55:23,960 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:55:23,960 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 237 transitions.
[2020-10-16 10:55:23,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states.
[2020-10-16 10:55:23,960 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 237 transitions.
[2020-10-16 10:55:23,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2020-10-16 10:55:23,961 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:55:23,961 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:55:24,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220,217 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:55:24,162 INFO L429 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:55:24,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:55:24,162 INFO L82 PathProgramCache]: Analyzing trace with hash -2104215232, now seen corresponding path program 220 times
[2020-10-16 10:55:24,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:55:24,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910819900]
[2020-10-16 10:55:24,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:55:24,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:55:24,580 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:24,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910819900]
[2020-10-16 10:55:24,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633383257]
[2020-10-16 10:55:24,581 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:55:24,631 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 10:55:24,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:55:24,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 24 conjunts are in the unsatisfiable core
[2020-10-16 10:55:24,632 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:55:24,667 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:55:24,682 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:24,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:55:24,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23
[2020-10-16 10:55:24,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299889073]
[2020-10-16 10:55:24,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states
[2020-10-16 10:55:24,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:55:24,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2020-10-16 10:55:24,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600
[2020-10-16 10:55:24,683 INFO L87 Difference]: Start difference. First operand 93 states and 237 transitions. Second operand 25 states.
[2020-10-16 10:55:25,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:55:25,625 INFO L93 Difference]: Finished difference Result 137 states and 325 transitions.
[2020-10-16 10:55:25,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states.
[2020-10-16 10:55:25,626 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 28
[2020-10-16 10:55:25,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:55:25,627 INFO L225 Difference]: With dead ends: 137
[2020-10-16 10:55:25,627 INFO L226 Difference]: Without dead ends: 131
[2020-10-16 10:55:25,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=665, Invalid=1785, Unknown=0, NotChecked=0, Total=2450
[2020-10-16 10:55:25,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states.
[2020-10-16 10:55:25,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 92.
[2020-10-16 10:55:25,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states.
[2020-10-16 10:55:25,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 235 transitions.
[2020-10-16 10:55:25,629 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 235 transitions. Word has length 28
[2020-10-16 10:55:25,630 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:55:25,630 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 235 transitions.
[2020-10-16 10:55:25,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states.
[2020-10-16 10:55:25,630 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 235 transitions.
[2020-10-16 10:55:25,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2020-10-16 10:55:25,630 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:55:25,630 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:55:25,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 218 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable221
[2020-10-16 10:55:25,831 INFO L429 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:55:25,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:55:25,831 INFO L82 PathProgramCache]: Analyzing trace with hash 888962878, now seen corresponding path program 221 times
[2020-10-16 10:55:25,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:55:25,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132018368]
[2020-10-16 10:55:25,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:55:25,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:55:26,236 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:26,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132018368]
[2020-10-16 10:55:26,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633733507]
[2020-10-16 10:55:26,237 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:55:26,299 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s)
[2020-10-16 10:55:26,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:55:26,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 24 conjunts are in the unsatisfiable core
[2020-10-16 10:55:26,300 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:55:26,317 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:26,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:55:26,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22
[2020-10-16 10:55:26,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314408914]
[2020-10-16 10:55:26,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states
[2020-10-16 10:55:26,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:55:26,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2020-10-16 10:55:26,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552
[2020-10-16 10:55:26,318 INFO L87 Difference]: Start difference. First operand 92 states and 235 transitions. Second operand 24 states.
[2020-10-16 10:55:27,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:55:27,216 INFO L93 Difference]: Finished difference Result 134 states and 319 transitions.
[2020-10-16 10:55:27,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states.
[2020-10-16 10:55:27,217 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 28
[2020-10-16 10:55:27,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:55:27,218 INFO L225 Difference]: With dead ends: 134
[2020-10-16 10:55:27,218 INFO L226 Difference]: Without dead ends: 128
[2020-10-16 10:55:27,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=629, Invalid=1723, Unknown=0, NotChecked=0, Total=2352
[2020-10-16 10:55:27,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states.
[2020-10-16 10:55:27,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 93.
[2020-10-16 10:55:27,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states.
[2020-10-16 10:55:27,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 237 transitions.
[2020-10-16 10:55:27,220 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 237 transitions. Word has length 28
[2020-10-16 10:55:27,221 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:55:27,221 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 237 transitions.
[2020-10-16 10:55:27,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states.
[2020-10-16 10:55:27,221 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 237 transitions.
[2020-10-16 10:55:27,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2020-10-16 10:55:27,221 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:55:27,221 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:55:27,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 219 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable222
[2020-10-16 10:55:27,428 INFO L429 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:55:27,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:55:27,428 INFO L82 PathProgramCache]: Analyzing trace with hash 78414242, now seen corresponding path program 222 times
[2020-10-16 10:55:27,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:55:27,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627989654]
[2020-10-16 10:55:27,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:55:27,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:55:27,833 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:27,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627989654]
[2020-10-16 10:55:27,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014749587]
[2020-10-16 10:55:27,834 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:55:27,888 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s)
[2020-10-16 10:55:27,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:55:27,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 24 conjunts are in the unsatisfiable core
[2020-10-16 10:55:27,890 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:55:27,920 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:55:27,936 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:27,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:55:27,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23
[2020-10-16 10:55:27,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620198514]
[2020-10-16 10:55:27,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states
[2020-10-16 10:55:27,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:55:27,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2020-10-16 10:55:27,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=495, Unknown=0, NotChecked=0, Total=600
[2020-10-16 10:55:27,938 INFO L87 Difference]: Start difference. First operand 93 states and 237 transitions. Second operand 25 states.
[2020-10-16 10:55:29,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:55:29,022 INFO L93 Difference]: Finished difference Result 133 states and 317 transitions.
[2020-10-16 10:55:29,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states.
[2020-10-16 10:55:29,023 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 28
[2020-10-16 10:55:29,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:55:29,024 INFO L225 Difference]: With dead ends: 133
[2020-10-16 10:55:29,024 INFO L226 Difference]: Without dead ends: 127
[2020-10-16 10:55:29,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=693, Invalid=1959, Unknown=0, NotChecked=0, Total=2652
[2020-10-16 10:55:29,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states.
[2020-10-16 10:55:29,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 92.
[2020-10-16 10:55:29,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states.
[2020-10-16 10:55:29,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 235 transitions.
[2020-10-16 10:55:29,027 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 235 transitions. Word has length 28
[2020-10-16 10:55:29,027 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:55:29,027 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 235 transitions.
[2020-10-16 10:55:29,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states.
[2020-10-16 10:55:29,027 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 235 transitions.
[2020-10-16 10:55:29,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2020-10-16 10:55:29,027 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:55:29,028 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:55:29,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 220 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable223
[2020-10-16 10:55:29,232 INFO L429 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:55:29,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:55:29,232 INFO L82 PathProgramCache]: Analyzing trace with hash 130690848, now seen corresponding path program 223 times
[2020-10-16 10:55:29,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:55:29,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242422232]
[2020-10-16 10:55:29,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:55:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:55:29,609 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:29,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242422232]
[2020-10-16 10:55:29,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240320452]
[2020-10-16 10:55:29,609 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:55:29,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:55:29,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 24 conjunts are in the unsatisfiable core
[2020-10-16 10:55:29,665 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:55:29,684 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:29,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:55:29,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22
[2020-10-16 10:55:29,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520064705]
[2020-10-16 10:55:29,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states
[2020-10-16 10:55:29,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:55:29,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2020-10-16 10:55:29,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552
[2020-10-16 10:55:29,686 INFO L87 Difference]: Start difference. First operand 92 states and 235 transitions. Second operand 24 states.
[2020-10-16 10:55:30,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:55:30,663 INFO L93 Difference]: Finished difference Result 130 states and 311 transitions.
[2020-10-16 10:55:30,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states.
[2020-10-16 10:55:30,664 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 28
[2020-10-16 10:55:30,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:55:30,664 INFO L225 Difference]: With dead ends: 130
[2020-10-16 10:55:30,665 INFO L226 Difference]: Without dead ends: 124
[2020-10-16 10:55:30,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=666, Invalid=1884, Unknown=0, NotChecked=0, Total=2550
[2020-10-16 10:55:30,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states.
[2020-10-16 10:55:30,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 93.
[2020-10-16 10:55:30,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states.
[2020-10-16 10:55:30,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 237 transitions.
[2020-10-16 10:55:30,668 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 237 transitions. Word has length 28
[2020-10-16 10:55:30,669 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:55:30,669 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 237 transitions.
[2020-10-16 10:55:30,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states.
[2020-10-16 10:55:30,669 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 237 transitions.
[2020-10-16 10:55:30,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2020-10-16 10:55:30,669 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:55:30,670 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:55:30,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224,221 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:55:30,872 INFO L429 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:55:30,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:55:30,873 INFO L82 PathProgramCache]: Analyzing trace with hash 2006940292, now seen corresponding path program 224 times
[2020-10-16 10:55:30,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:55:30,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106042011]
[2020-10-16 10:55:30,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:55:30,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:55:31,272 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:31,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106042011]
[2020-10-16 10:55:31,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989645682]
[2020-10-16 10:55:31,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:55:31,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 10:55:31,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:55:31,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 24 conjunts are in the unsatisfiable core
[2020-10-16 10:55:31,326 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:55:31,356 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:55:31,380 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:31,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:55:31,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23
[2020-10-16 10:55:31,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433426409]
[2020-10-16 10:55:31,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states
[2020-10-16 10:55:31,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:55:31,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2020-10-16 10:55:31,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600
[2020-10-16 10:55:31,381 INFO L87 Difference]: Start difference. First operand 93 states and 237 transitions. Second operand 25 states.
[2020-10-16 10:55:32,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:55:32,582 INFO L93 Difference]: Finished difference Result 129 states and 309 transitions.
[2020-10-16 10:55:32,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states.
[2020-10-16 10:55:32,584 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 28
[2020-10-16 10:55:32,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:55:32,584 INFO L225 Difference]: With dead ends: 129
[2020-10-16 10:55:32,584 INFO L226 Difference]: Without dead ends: 123
[2020-10-16 10:55:32,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=737, Invalid=2125, Unknown=0, NotChecked=0, Total=2862
[2020-10-16 10:55:32,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states.
[2020-10-16 10:55:32,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 92.
[2020-10-16 10:55:32,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states.
[2020-10-16 10:55:32,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 235 transitions.
[2020-10-16 10:55:32,587 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 235 transitions. Word has length 28
[2020-10-16 10:55:32,587 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:55:32,587 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 235 transitions.
[2020-10-16 10:55:32,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states.
[2020-10-16 10:55:32,587 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 235 transitions.
[2020-10-16 10:55:32,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2020-10-16 10:55:32,588 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:55:32,588 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:55:32,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 222 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable225
[2020-10-16 10:55:32,789 INFO L429 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:55:32,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:55:32,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1599705214, now seen corresponding path program 225 times
[2020-10-16 10:55:32,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:55:32,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776675078]
[2020-10-16 10:55:32,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:55:32,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:55:33,148 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:33,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776675078]
[2020-10-16 10:55:33,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732414898]
[2020-10-16 10:55:33,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:55:33,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s)
[2020-10-16 10:55:33,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:55:33,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 24 conjunts are in the unsatisfiable core
[2020-10-16 10:55:33,204 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:55:33,225 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:33,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:55:33,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22
[2020-10-16 10:55:33,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428605145]
[2020-10-16 10:55:33,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states
[2020-10-16 10:55:33,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:55:33,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2020-10-16 10:55:33,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552
[2020-10-16 10:55:33,227 INFO L87 Difference]: Start difference. First operand 92 states and 235 transitions. Second operand 24 states.
[2020-10-16 10:55:34,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:55:34,307 INFO L93 Difference]: Finished difference Result 126 states and 303 transitions.
[2020-10-16 10:55:34,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states.
[2020-10-16 10:55:34,308 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 28
[2020-10-16 10:55:34,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:55:34,308 INFO L225 Difference]: With dead ends: 126
[2020-10-16 10:55:34,309 INFO L226 Difference]: Without dead ends: 120
[2020-10-16 10:55:34,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 604 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=719, Invalid=2037, Unknown=0, NotChecked=0, Total=2756
[2020-10-16 10:55:34,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states.
[2020-10-16 10:55:34,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 93.
[2020-10-16 10:55:34,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states.
[2020-10-16 10:55:34,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 237 transitions.
[2020-10-16 10:55:34,311 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 237 transitions. Word has length 28
[2020-10-16 10:55:34,311 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:55:34,312 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 237 transitions.
[2020-10-16 10:55:34,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states.
[2020-10-16 10:55:34,312 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 237 transitions.
[2020-10-16 10:55:34,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2020-10-16 10:55:34,312 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:55:34,312 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:55:34,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226,223 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:55:34,513 INFO L429 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:55:34,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:55:34,513 INFO L82 PathProgramCache]: Analyzing trace with hash -614513690, now seen corresponding path program 226 times
[2020-10-16 10:55:34,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:55:34,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735260529]
[2020-10-16 10:55:34,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:55:34,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:55:34,886 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:34,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735260529]
[2020-10-16 10:55:34,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712798645]
[2020-10-16 10:55:34,887 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:55:34,937 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 10:55:34,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:55:34,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 24 conjunts are in the unsatisfiable core
[2020-10-16 10:55:34,939 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:55:34,969 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:55:34,987 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:34,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:55:34,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23
[2020-10-16 10:55:34,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766759115]
[2020-10-16 10:55:34,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states
[2020-10-16 10:55:34,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:55:34,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2020-10-16 10:55:34,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600
[2020-10-16 10:55:34,988 INFO L87 Difference]: Start difference. First operand 93 states and 237 transitions. Second operand 25 states.
[2020-10-16 10:55:36,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:55:36,340 INFO L93 Difference]: Finished difference Result 125 states and 301 transitions.
[2020-10-16 10:55:36,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states.
[2020-10-16 10:55:36,341 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 28
[2020-10-16 10:55:36,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:55:36,341 INFO L225 Difference]: With dead ends: 125
[2020-10-16 10:55:36,341 INFO L226 Difference]: Without dead ends: 119
[2020-10-16 10:55:36,342 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 692 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=797, Invalid=2283, Unknown=0, NotChecked=0, Total=3080
[2020-10-16 10:55:36,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states.
[2020-10-16 10:55:36,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 92.
[2020-10-16 10:55:36,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states.
[2020-10-16 10:55:36,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 235 transitions.
[2020-10-16 10:55:36,344 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 235 transitions. Word has length 28
[2020-10-16 10:55:36,344 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:55:36,344 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 235 transitions.
[2020-10-16 10:55:36,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states.
[2020-10-16 10:55:36,344 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 235 transitions.
[2020-10-16 10:55:36,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2020-10-16 10:55:36,344 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:55:36,344 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:55:36,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 224 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable227
[2020-10-16 10:55:36,546 INFO L429 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:55:36,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:55:36,547 INFO L82 PathProgramCache]: Analyzing trace with hash 2063294564, now seen corresponding path program 227 times
[2020-10-16 10:55:36,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:55:36,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073310409]
[2020-10-16 10:55:36,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:55:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:55:36,905 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:36,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073310409]
[2020-10-16 10:55:36,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815377315]
[2020-10-16 10:55:36,906 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:55:36,964 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s)
[2020-10-16 10:55:36,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:55:36,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 24 conjunts are in the unsatisfiable core
[2020-10-16 10:55:36,965 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:55:36,989 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:36,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:55:36,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22
[2020-10-16 10:55:36,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976990078]
[2020-10-16 10:55:36,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states
[2020-10-16 10:55:36,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:55:36,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2020-10-16 10:55:36,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552
[2020-10-16 10:55:36,991 INFO L87 Difference]: Start difference. First operand 92 states and 235 transitions. Second operand 24 states.
[2020-10-16 10:55:38,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:55:38,144 INFO L93 Difference]: Finished difference Result 122 states and 295 transitions.
[2020-10-16 10:55:38,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states.
[2020-10-16 10:55:38,145 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 28
[2020-10-16 10:55:38,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:55:38,145 INFO L225 Difference]: With dead ends: 122
[2020-10-16 10:55:38,146 INFO L226 Difference]: Without dead ends: 116
[2020-10-16 10:55:38,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=788, Invalid=2182, Unknown=0, NotChecked=0, Total=2970
[2020-10-16 10:55:38,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states.
[2020-10-16 10:55:38,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 93.
[2020-10-16 10:55:38,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states.
[2020-10-16 10:55:38,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 237 transitions.
[2020-10-16 10:55:38,149 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 237 transitions. Word has length 28
[2020-10-16 10:55:38,150 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:55:38,150 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 237 transitions.
[2020-10-16 10:55:38,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states.
[2020-10-16 10:55:38,150 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 237 transitions.
[2020-10-16 10:55:38,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2020-10-16 10:55:38,150 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:55:38,150 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:55:38,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228,225 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:55:38,355 INFO L429 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:55:38,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:55:38,355 INFO L82 PathProgramCache]: Analyzing trace with hash -974783032, now seen corresponding path program 228 times
[2020-10-16 10:55:38,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:55:38,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024165170]
[2020-10-16 10:55:38,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:55:38,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:55:38,718 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:38,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024165170]
[2020-10-16 10:55:38,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457087416]
[2020-10-16 10:55:38,718 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:55:38,778 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s)
[2020-10-16 10:55:38,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:55:38,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 24 conjunts are in the unsatisfiable core
[2020-10-16 10:55:38,780 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:55:38,813 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:55:38,832 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:38,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:55:38,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23
[2020-10-16 10:55:38,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826278951]
[2020-10-16 10:55:38,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states
[2020-10-16 10:55:38,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:55:38,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2020-10-16 10:55:38,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600
[2020-10-16 10:55:38,834 INFO L87 Difference]: Start difference. First operand 93 states and 237 transitions. Second operand 25 states.
[2020-10-16 10:55:40,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:55:40,297 INFO L93 Difference]: Finished difference Result 121 states and 293 transitions.
[2020-10-16 10:55:40,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states.
[2020-10-16 10:55:40,299 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 28
[2020-10-16 10:55:40,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:55:40,299 INFO L225 Difference]: With dead ends: 121
[2020-10-16 10:55:40,299 INFO L226 Difference]: Without dead ends: 115
[2020-10-16 10:55:40,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=873, Invalid=2433, Unknown=0, NotChecked=0, Total=3306
[2020-10-16 10:55:40,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states.
[2020-10-16 10:55:40,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 92.
[2020-10-16 10:55:40,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states.
[2020-10-16 10:55:40,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 235 transitions.
[2020-10-16 10:55:40,302 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 235 transitions. Word has length 28
[2020-10-16 10:55:40,302 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:55:40,302 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 235 transitions.
[2020-10-16 10:55:40,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states.
[2020-10-16 10:55:40,303 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 235 transitions.
[2020-10-16 10:55:40,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2020-10-16 10:55:40,303 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:55:40,303 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:55:40,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 226 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable229
[2020-10-16 10:55:40,504 INFO L429 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:55:40,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:55:40,504 INFO L82 PathProgramCache]: Analyzing trace with hash 641409478, now seen corresponding path program 229 times
[2020-10-16 10:55:40,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:55:40,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093132609]
[2020-10-16 10:55:40,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:55:40,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:55:40,855 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:40,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093132609]
[2020-10-16 10:55:40,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100173890]
[2020-10-16 10:55:40,856 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:55:40,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:55:40,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 24 conjunts are in the unsatisfiable core
[2020-10-16 10:55:40,909 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:55:40,933 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:40,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:55:40,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22
[2020-10-16 10:55:40,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962235051]
[2020-10-16 10:55:40,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states
[2020-10-16 10:55:40,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:55:40,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2020-10-16 10:55:40,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552
[2020-10-16 10:55:40,934 INFO L87 Difference]: Start difference. First operand 92 states and 235 transitions. Second operand 24 states.
[2020-10-16 10:55:42,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:55:42,232 INFO L93 Difference]: Finished difference Result 118 states and 287 transitions.
[2020-10-16 10:55:42,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states.
[2020-10-16 10:55:42,233 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 28
[2020-10-16 10:55:42,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:55:42,234 INFO L225 Difference]: With dead ends: 118
[2020-10-16 10:55:42,234 INFO L226 Difference]: Without dead ends: 112
[2020-10-16 10:55:42,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 762 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=873, Invalid=2319, Unknown=0, NotChecked=0, Total=3192
[2020-10-16 10:55:42,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states.
[2020-10-16 10:55:42,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 93.
[2020-10-16 10:55:42,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states.
[2020-10-16 10:55:42,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 237 transitions.
[2020-10-16 10:55:42,236 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 237 transitions. Word has length 28
[2020-10-16 10:55:42,237 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:55:42,237 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 237 transitions.
[2020-10-16 10:55:42,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states.
[2020-10-16 10:55:42,237 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 237 transitions.
[2020-10-16 10:55:42,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2020-10-16 10:55:42,237 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:55:42,237 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:55:42,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230,227 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:55:42,438 INFO L429 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:55:42,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:55:42,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1161152554, now seen corresponding path program 230 times
[2020-10-16 10:55:42,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:55:42,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3393262]
[2020-10-16 10:55:42,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:55:42,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:55:42,793 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:42,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3393262]
[2020-10-16 10:55:42,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673257443]
[2020-10-16 10:55:42,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:55:42,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 10:55:42,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:55:42,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 24 conjunts are in the unsatisfiable core
[2020-10-16 10:55:42,846 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:55:42,885 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:55:42,907 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:42,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:55:42,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23
[2020-10-16 10:55:42,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275006542]
[2020-10-16 10:55:42,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states
[2020-10-16 10:55:42,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:55:42,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2020-10-16 10:55:42,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600
[2020-10-16 10:55:42,908 INFO L87 Difference]: Start difference. First operand 93 states and 237 transitions. Second operand 25 states.
[2020-10-16 10:55:44,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:55:44,509 INFO L93 Difference]: Finished difference Result 117 states and 285 transitions.
[2020-10-16 10:55:44,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states.
[2020-10-16 10:55:44,510 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 28
[2020-10-16 10:55:44,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:55:44,511 INFO L225 Difference]: With dead ends: 117
[2020-10-16 10:55:44,511 INFO L226 Difference]: Without dead ends: 111
[2020-10-16 10:55:44,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 852 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=965, Invalid=2575, Unknown=0, NotChecked=0, Total=3540
[2020-10-16 10:55:44,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states.
[2020-10-16 10:55:44,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 92.
[2020-10-16 10:55:44,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states.
[2020-10-16 10:55:44,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 235 transitions.
[2020-10-16 10:55:44,514 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 235 transitions. Word has length 28
[2020-10-16 10:55:44,514 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:55:44,514 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 235 transitions.
[2020-10-16 10:55:44,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states.
[2020-10-16 10:55:44,514 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 235 transitions.
[2020-10-16 10:55:44,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2020-10-16 10:55:44,514 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:55:44,514 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:55:44,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231,228 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:55:44,715 INFO L429 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:55:44,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:55:44,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1478503512, now seen corresponding path program 231 times
[2020-10-16 10:55:44,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:55:44,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387349876]
[2020-10-16 10:55:44,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:55:44,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:55:45,073 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:45,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387349876]
[2020-10-16 10:55:45,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194445004]
[2020-10-16 10:55:45,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:55:45,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s)
[2020-10-16 10:55:45,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:55:45,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 24 conjunts are in the unsatisfiable core
[2020-10-16 10:55:45,131 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:55:45,159 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:45,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:55:45,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22
[2020-10-16 10:55:45,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240757474]
[2020-10-16 10:55:45,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states
[2020-10-16 10:55:45,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:55:45,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2020-10-16 10:55:45,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552
[2020-10-16 10:55:45,161 INFO L87 Difference]: Start difference. First operand 92 states and 235 transitions. Second operand 24 states.
[2020-10-16 10:55:46,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:55:46,508 INFO L93 Difference]: Finished difference Result 114 states and 279 transitions.
[2020-10-16 10:55:46,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states.
[2020-10-16 10:55:46,509 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 28
[2020-10-16 10:55:46,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:55:46,509 INFO L225 Difference]: With dead ends: 114
[2020-10-16 10:55:46,510 INFO L226 Difference]: Without dead ends: 108
[2020-10-16 10:55:46,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=974, Invalid=2448, Unknown=0, NotChecked=0, Total=3422
[2020-10-16 10:55:46,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states.
[2020-10-16 10:55:46,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 93.
[2020-10-16 10:55:46,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states.
[2020-10-16 10:55:46,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 237 transitions.
[2020-10-16 10:55:46,513 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 237 transitions. Word has length 28
[2020-10-16 10:55:46,513 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:55:46,513 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 237 transitions.
[2020-10-16 10:55:46,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states.
[2020-10-16 10:55:46,513 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 237 transitions.
[2020-10-16 10:55:46,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2020-10-16 10:55:46,513 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:55:46,513 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:55:46,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 229 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable232
[2020-10-16 10:55:46,714 INFO L429 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:55:46,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:55:46,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1096336140, now seen corresponding path program 232 times
[2020-10-16 10:55:46,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:55:46,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563459858]
[2020-10-16 10:55:46,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:55:46,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:55:47,059 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:47,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563459858]
[2020-10-16 10:55:47,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430869132]
[2020-10-16 10:55:47,059 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:55:47,108 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 10:55:47,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:55:47,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 24 conjunts are in the unsatisfiable core
[2020-10-16 10:55:47,110 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:55:47,141 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 10:55:47,163 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:47,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:55:47,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23
[2020-10-16 10:55:47,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112444271]
[2020-10-16 10:55:47,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states
[2020-10-16 10:55:47,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:55:47,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2020-10-16 10:55:47,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600
[2020-10-16 10:55:47,165 INFO L87 Difference]: Start difference. First operand 93 states and 237 transitions. Second operand 25 states.
[2020-10-16 10:55:48,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:55:48,881 INFO L93 Difference]: Finished difference Result 113 states and 277 transitions.
[2020-10-16 10:55:48,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states.
[2020-10-16 10:55:48,882 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 28
[2020-10-16 10:55:48,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:55:48,882 INFO L225 Difference]: With dead ends: 113
[2020-10-16 10:55:48,882 INFO L226 Difference]: Without dead ends: 107
[2020-10-16 10:55:48,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 938 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1073, Invalid=2709, Unknown=0, NotChecked=0, Total=3782
[2020-10-16 10:55:48,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states.
[2020-10-16 10:55:48,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 92.
[2020-10-16 10:55:48,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states.
[2020-10-16 10:55:48,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 235 transitions.
[2020-10-16 10:55:48,885 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 235 transitions. Word has length 28
[2020-10-16 10:55:48,885 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:55:48,885 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 235 transitions.
[2020-10-16 10:55:48,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states.
[2020-10-16 10:55:48,885 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 235 transitions.
[2020-10-16 10:55:48,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2020-10-16 10:55:48,886 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:55:48,886 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:55:49,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 230 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable233
[2020-10-16 10:55:49,087 INFO L429 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:55:49,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:55:49,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1567331850, now seen corresponding path program 233 times
[2020-10-16 10:55:49,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:55:49,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128297194]
[2020-10-16 10:55:49,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:55:49,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 10:55:49,443 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:49,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128297194]
[2020-10-16 10:55:49,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259949792]
[2020-10-16 10:55:49,444 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 10:55:49,498 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s)
[2020-10-16 10:55:49,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 10:55:49,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 24 conjunts are in the unsatisfiable core
[2020-10-16 10:55:49,500 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 10:55:49,530 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 10:55:49,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 10:55:49,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22
[2020-10-16 10:55:49,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452563610]
[2020-10-16 10:55:49,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states
[2020-10-16 10:55:49,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 10:55:49,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2020-10-16 10:55:49,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552
[2020-10-16 10:55:49,531 INFO L87 Difference]: Start difference. First operand 92 states and 235 transitions. Second operand 24 states.
[2020-10-16 10:55:50,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 10:55:50,975 INFO L93 Difference]: Finished difference Result 110 states and 271 transitions.
[2020-10-16 10:55:50,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states.
[2020-10-16 10:55:50,976 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 28
[2020-10-16 10:55:50,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 10:55:50,976 INFO L225 Difference]: With dead ends: 110
[2020-10-16 10:55:50,976 INFO L226 Difference]: Without dead ends: 104
[2020-10-16 10:55:50,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 936 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1091, Invalid=2569, Unknown=0, NotChecked=0, Total=3660
[2020-10-16 10:55:50,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states.
[2020-10-16 10:55:50,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 93.
[2020-10-16 10:55:50,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states.
[2020-10-16 10:55:50,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 237 transitions.
[2020-10-16 10:55:50,979 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 237 transitions. Word has length 28
[2020-10-16 10:55:50,979 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-16 10:55:50,979 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 237 transitions.
[2020-10-16 10:55:50,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states.
[2020-10-16 10:55:50,979 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 237 transitions.
[2020-10-16 10:55:50,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2020-10-16 10:55:50,980 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-16 10:55:50,980 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 10:55:51,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 231 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable234
[2020-10-16 10:55:51,181 INFO L429 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 10:55:51,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 10:55:51,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1583418990, now seen corresponding path program 234 times
[2020-10-16 10:55:51,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 10:55:51,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112992799]
[2020-10-16 10:55:51,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 10:55:51,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
Received shutdown request...
[2020-10-16 10:55:51,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235
[2020-10-16 10:55:51,428 WARN L546 AbstractCegarLoop]: Verification canceled
[2020-10-16 10:55:51,431 WARN L235 ceAbstractionStarter]: Timeout
[2020-10-16 10:55:51,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 10:55:51 BasicIcfg
[2020-10-16 10:55:51,432 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-10-16 10:55:51,433 INFO L168 Benchmark]: Toolchain (without parser) took 269478.18 ms. Allocated memory was 146.3 MB in the beginning and 212.9 MB in the end (delta: 66.6 MB). Free memory was 100.8 MB in the beginning and 133.5 MB in the end (delta: -32.6 MB). Peak memory consumption was 33.9 MB. Max. memory is 7.1 GB.
[2020-10-16 10:55:51,435 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 146.3 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB.
[2020-10-16 10:55:51,435 INFO L168 Benchmark]: CACSL2BoogieTranslator took 731.22 ms. Allocated memory was 146.3 MB in the beginning and 204.5 MB in the end (delta: 58.2 MB). Free memory was 100.6 MB in the beginning and 161.5 MB in the end (delta: -60.9 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB.
[2020-10-16 10:55:51,436 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.73 ms. Allocated memory is still 204.5 MB. Free memory was 161.5 MB in the beginning and 159.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB.
[2020-10-16 10:55:51,436 INFO L168 Benchmark]: Boogie Preprocessor took 31.01 ms. Allocated memory is still 204.5 MB. Free memory was 159.5 MB in the beginning and 158.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB.
[2020-10-16 10:55:51,436 INFO L168 Benchmark]: RCFGBuilder took 448.01 ms. Allocated memory is still 204.5 MB. Free memory was 158.2 MB in the beginning and 137.5 MB in the end (delta: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB.
[2020-10-16 10:55:51,437 INFO L168 Benchmark]: TraceAbstraction took 268197.58 ms. Allocated memory was 204.5 MB in the beginning and 212.9 MB in the end (delta: 8.4 MB). Free memory was 136.8 MB in the beginning and 133.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB.
[2020-10-16 10:55:51,439 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.29 ms. Allocated memory is still 146.3 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 731.22 ms. Allocated memory was 146.3 MB in the beginning and 204.5 MB in the end (delta: 58.2 MB). Free memory was 100.6 MB in the beginning and 161.5 MB in the end (delta: -60.9 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB.
* Boogie Procedure Inliner took 51.73 ms. Allocated memory is still 204.5 MB. Free memory was 161.5 MB in the beginning and 159.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 31.01 ms. Allocated memory is still 204.5 MB. Free memory was 159.5 MB in the beginning and 158.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 448.01 ms. Allocated memory is still 204.5 MB. Free memory was 158.2 MB in the beginning and 137.5 MB in the end (delta: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 268197.58 ms. Allocated memory was 204.5 MB in the beginning and 212.9 MB in the end (delta: 8.4 MB). Free memory was 136.8 MB in the beginning and 133.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: PetriNetLargeBlockEncoding benchmarks
618 VarBasedMoverChecksPositive, 16 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 16 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 19 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 57 PlacesBefore, 20 PlacesAfterwards, 55 TransitionsBefore, 15 TransitionsAfterwards, 924 CoEnabledTransitionPairs, 5 FixpointIterations, 12 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 3 ChoiceCompositions, 45 TotalNumberOfCompositions, 911 MoverChecksTotal
- TimeoutResultAtElement [Line: 703]: Timeout (TraceAbstraction)
Unable to prove that call of __VERIFIER_error() unreachable (line 703). Cancelled while BasicCegarLoop was analyzing trace of length 29 with TraceHistMax 10,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 19 known predicates.
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 3 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 268.0s, OverallIterations: 236, TraceHistogramMax: 10, AutomataDifference: 152.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 3756 SDtfs, 13348 SDslu, 24790 SDs, 0 SdLazy, 26775 SolverSat, 15602 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 27.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13204 GetRequests, 4348 SyntacticMatches, 230 SemanticMatches, 8626 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86613 ImplicationChecksByTransitivity, 157.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=217, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 235 MinimizatonAttempts, 5976 StatesRemovedByMinimization, 234 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.7s SsaConstructionTime, 5.4s SatisfiabilityAnalysisTime, 51.2s InterpolantComputationTime, 9906 NumberOfCodeBlocks, 9906 NumberOfCodeBlocksAsserted, 1229 NumberOfCheckSat, 9441 ConstructedInterpolants, 0 QuantifiedInterpolants, 926089 SizeOfPredicates, 3091 NumberOfNonLiveVariables, 30175 ConjunctsInSsa, 4016 ConjunctsInUnsatCore, 465 InterpolantComputations, 5 PerfectInterpolantSequences, 0/20310 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: Timeout
Completed graceful shutdown