/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-nondet/nondet-loop-bound-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 11:31:05,957 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 11:31:05,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 11:31:06,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 11:31:06,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 11:31:06,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 11:31:06,014 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 11:31:06,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 11:31:06,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 11:31:06,024 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 11:31:06,025 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 11:31:06,026 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 11:31:06,026 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 11:31:06,029 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 11:31:06,032 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 11:31:06,033 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 11:31:06,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 11:31:06,036 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 11:31:06,037 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 11:31:06,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 11:31:06,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 11:31:06,050 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 11:31:06,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 11:31:06,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 11:31:06,064 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 11:31:06,082 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 11:31:06,083 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 11:31:06,083 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 11:31:06,085 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 11:31:06,125 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 11:31:06,125 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 11:31:06,127 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 11:31:06,127 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 11:31:06,127 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 11:31:06,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 11:31:06,128 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 11:31:06,128 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 11:31:06,128 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 11:31:06,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 11:31:06,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 11:31:06,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 11:31:06,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 11:31:06,131 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 11:31:06,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 11:31:06,131 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 11:31:06,131 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 11:31:06,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 11:31:06,132 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 11:31:06,132 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 11:31:06,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 11:31:06,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 11:31:06,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 11:31:06,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 11:31:06,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 11:31:06,133 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 11:31:06,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 11:31:06,133 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 11:31:06,134 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-16 11:31:06,134 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 11:31:06,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 11:31:06,471 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 11:31:06,474 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 11:31:06,476 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 11:31:06,476 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 11:31:06,477 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-2.i [2020-10-16 11:31:06,539 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/383f39f35/d96875e8aed640daab2e8f39d35da651/FLAGed66269f7 [2020-10-16 11:31:07,040 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 11:31:07,041 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-2.i [2020-10-16 11:31:07,056 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/383f39f35/d96875e8aed640daab2e8f39d35da651/FLAGed66269f7 [2020-10-16 11:31:07,367 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/383f39f35/d96875e8aed640daab2e8f39d35da651 [2020-10-16 11:31:07,375 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 11:31:07,376 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 11:31:07,377 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 11:31:07,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 11:31:07,380 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 11:31:07,381 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:31:07" (1/1) ... [2020-10-16 11:31:07,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1af4dac7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:31:07, skipping insertion in model container [2020-10-16 11:31:07,384 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:31:07" (1/1) ... [2020-10-16 11:31:07,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 11:31:07,434 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 11:31:07,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:31:07,868 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 11:31:07,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:31:08,014 INFO L208 MainTranslator]: Completed translation [2020-10-16 11:31:08,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:31:08 WrapperNode [2020-10-16 11:31:08,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 11:31:08,016 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 11:31:08,016 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 11:31:08,016 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 11:31:08,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:31:08" (1/1) ... [2020-10-16 11:31:08,041 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:31:08" (1/1) ... [2020-10-16 11:31:08,066 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 11:31:08,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 11:31:08,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 11:31:08,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 11:31:08,074 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:31:08" (1/1) ... [2020-10-16 11:31:08,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:31:08" (1/1) ... [2020-10-16 11:31:08,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:31:08" (1/1) ... [2020-10-16 11:31:08,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:31:08" (1/1) ... [2020-10-16 11:31:08,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:31:08" (1/1) ... [2020-10-16 11:31:08,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:31:08" (1/1) ... [2020-10-16 11:31:08,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:31:08" (1/1) ... [2020-10-16 11:31:08,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 11:31:08,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 11:31:08,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 11:31:08,096 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 11:31:08,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:31:08" (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 11:31:08,172 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-16 11:31:08,172 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-16 11:31:08,172 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 11:31:08,172 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 11:31:08,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 11:31:08,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 11:31:08,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 11:31:08,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 11:31:08,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 11:31:08,175 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 11:31:08,545 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 11:31:08,546 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-16 11:31:08,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:31:08 BoogieIcfgContainer [2020-10-16 11:31:08,548 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 11:31:08,550 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 11:31:08,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 11:31:08,553 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 11:31:08,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:31:07" (1/3) ... [2020-10-16 11:31:08,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b5ca07e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:31:08, skipping insertion in model container [2020-10-16 11:31:08,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:31:08" (2/3) ... [2020-10-16 11:31:08,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b5ca07e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:31:08, skipping insertion in model container [2020-10-16 11:31:08,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:31:08" (3/3) ... [2020-10-16 11:31:08,557 INFO L111 eAbstractionObserver]: Analyzing ICFG nondet-loop-bound-2.i [2020-10-16 11:31:08,569 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 11:31:08,570 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 11:31:08,576 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 11:31:08,577 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 11:31:08,604 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:08,605 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:08,605 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:08,606 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:08,606 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:08,606 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:08,607 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:08,608 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:08,608 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:08,608 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:08,608 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:08,609 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:08,609 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:08,609 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:08,610 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:08,610 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:08,610 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:08,617 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:08,618 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:08,621 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:08,622 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:08,622 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:08,632 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:08,632 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:08,633 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:08,633 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:08,633 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:08,633 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:08,636 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:31:08,650 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 11:31:08,669 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:31:08,669 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:31:08,669 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:31:08,670 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:31:08,670 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:31:08,670 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:31:08,670 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:31:08,670 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:31:08,682 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:31:08,685 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 58 transitions, 126 flow [2020-10-16 11:31:08,687 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 58 transitions, 126 flow [2020-10-16 11:31:08,689 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 58 transitions, 126 flow [2020-10-16 11:31:08,733 INFO L129 PetriNetUnfolder]: 4/68 cut-off events. [2020-10-16 11:31:08,733 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 11:31:08,739 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 68 events. 4/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 48. Up to 4 conditions per place. [2020-10-16 11:31:08,744 INFO L117 LiptonReduction]: Number of co-enabled transitions 592 [2020-10-16 11:31:10,174 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-10-16 11:31:10,398 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2020-10-16 11:31:10,481 INFO L132 LiptonReduction]: Checked pairs total: 576 [2020-10-16 11:31:10,481 INFO L134 LiptonReduction]: Total number of compositions: 54 [2020-10-16 11:31:10,491 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 12 transitions, 34 flow [2020-10-16 11:31:10,501 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-16 11:31:10,503 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-16 11:31:10,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-16 11:31:10,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:10,511 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-16 11:31:10,511 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:31:10,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:10,517 INFO L82 PathProgramCache]: Analyzing trace with hash 229686, now seen corresponding path program 1 times [2020-10-16 11:31:10,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:10,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180254481] [2020-10-16 11:31:10,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:10,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:10,713 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 11:31:10,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180254481] [2020-10-16 11:31:10,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:31:10,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:31:10,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630515424] [2020-10-16 11:31:10,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:31:10,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:10,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:31:10,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:31:10,743 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-10-16 11:31:10,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:10,781 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2020-10-16 11:31:10,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:31:10,783 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-16 11:31:10,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:10,794 INFO L225 Difference]: With dead ends: 35 [2020-10-16 11:31:10,795 INFO L226 Difference]: Without dead ends: 31 [2020-10-16 11:31:10,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:31:10,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-16 11:31:10,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-16 11:31:10,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-16 11:31:10,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 51 transitions. [2020-10-16 11:31:10,836 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 51 transitions. Word has length 3 [2020-10-16 11:31:10,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:10,836 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 51 transitions. [2020-10-16 11:31:10,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:31:10,837 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2020-10-16 11:31:10,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-16 11:31:10,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:10,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:10,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 11:31:10,838 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:31:10,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:10,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1647647331, now seen corresponding path program 1 times [2020-10-16 11:31:10,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:10,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404004555] [2020-10-16 11:31:10,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:10,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:10,926 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 11:31:10,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404004555] [2020-10-16 11:31:10,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:31:10,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:31:10,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415452515] [2020-10-16 11:31:10,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:31:10,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:10,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:31:10,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:31:10,933 INFO L87 Difference]: Start difference. First operand 31 states and 51 transitions. Second operand 4 states. [2020-10-16 11:31:10,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:10,956 INFO L93 Difference]: Finished difference Result 26 states and 42 transitions. [2020-10-16 11:31:10,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 11:31:10,958 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-16 11:31:10,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:10,959 INFO L225 Difference]: With dead ends: 26 [2020-10-16 11:31:10,959 INFO L226 Difference]: Without dead ends: 24 [2020-10-16 11:31:10,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:31:10,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-16 11:31:10,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-16 11:31:10,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-16 11:31:10,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 39 transitions. [2020-10-16 11:31:10,969 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 39 transitions. Word has length 7 [2020-10-16 11:31:10,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:10,970 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 39 transitions. [2020-10-16 11:31:10,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:31:10,970 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 39 transitions. [2020-10-16 11:31:10,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 11:31:10,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:10,972 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:10,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 11:31:10,972 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:31:10,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:10,973 INFO L82 PathProgramCache]: Analyzing trace with hash -462538936, now seen corresponding path program 1 times [2020-10-16 11:31:10,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:10,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072951527] [2020-10-16 11:31:10,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:11,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:31:11,033 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:31:11,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:31:11,069 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:31:11,109 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 11:31:11,109 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 11:31:11,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 11:31:11,110 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 11:31:11,111 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 11:31:11,111 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-16 11:31:11,127 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,128 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,128 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,128 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,128 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,128 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,128 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,130 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,131 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,131 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,131 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,131 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,131 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,131 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,132 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,132 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,133 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,133 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,133 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,133 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,133 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,133 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,134 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,134 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,135 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,135 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,137 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,137 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,137 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,138 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,138 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,138 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,138 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,138 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,139 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,139 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,140 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,140 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,140 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,142 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,142 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,142 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,142 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,142 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,144 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,144 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,144 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,145 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,145 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,145 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,146 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,147 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,147 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,147 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,147 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,147 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:11,149 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:31:11,149 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-16 11:31:11,150 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:31:11,150 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:31:11,150 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:31:11,150 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:31:11,150 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:31:11,150 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:31:11,151 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:31:11,151 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:31:11,156 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:31:11,156 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 74 transitions, 172 flow [2020-10-16 11:31:11,156 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 74 transitions, 172 flow [2020-10-16 11:31:11,156 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 80 places, 74 transitions, 172 flow [2020-10-16 11:31:11,177 INFO L129 PetriNetUnfolder]: 5/89 cut-off events. [2020-10-16 11:31:11,177 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 11:31:11,179 INFO L80 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 89 events. 5/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 120 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 98. Up to 6 conditions per place. [2020-10-16 11:31:11,181 INFO L117 LiptonReduction]: Number of co-enabled transitions 920 [2020-10-16 11:31:12,582 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-16 11:31:12,730 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-16 11:31:12,736 INFO L132 LiptonReduction]: Checked pairs total: 1122 [2020-10-16 11:31:12,736 INFO L134 LiptonReduction]: Total number of compositions: 66 [2020-10-16 11:31:12,737 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 66 flow [2020-10-16 11:31:12,749 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 224 states. [2020-10-16 11:31:12,749 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states. [2020-10-16 11:31:12,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-16 11:31:12,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:12,750 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-16 11:31:12,750 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:31:12,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:12,751 INFO L82 PathProgramCache]: Analyzing trace with hash 384194, now seen corresponding path program 1 times [2020-10-16 11:31:12,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:12,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941678580] [2020-10-16 11:31:12,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:12,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:12,792 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 11:31:12,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941678580] [2020-10-16 11:31:12,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:31:12,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:31:12,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243398100] [2020-10-16 11:31:12,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:31:12,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:12,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:31:12,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:31:12,794 INFO L87 Difference]: Start difference. First operand 224 states. Second operand 3 states. [2020-10-16 11:31:12,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:12,834 INFO L93 Difference]: Finished difference Result 185 states and 459 transitions. [2020-10-16 11:31:12,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:31:12,835 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-16 11:31:12,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:12,840 INFO L225 Difference]: With dead ends: 185 [2020-10-16 11:31:12,840 INFO L226 Difference]: Without dead ends: 171 [2020-10-16 11:31:12,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:31:12,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-16 11:31:12,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-10-16 11:31:12,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-16 11:31:12,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 418 transitions. [2020-10-16 11:31:12,867 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 418 transitions. Word has length 3 [2020-10-16 11:31:12,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:12,867 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 418 transitions. [2020-10-16 11:31:12,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:31:12,868 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 418 transitions. [2020-10-16 11:31:12,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 11:31:12,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:12,869 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:12,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 11:31:12,869 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:31:12,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:12,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1694917346, now seen corresponding path program 1 times [2020-10-16 11:31:12,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:12,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960353304] [2020-10-16 11:31:12,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:12,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:12,940 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 11:31:12,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960353304] [2020-10-16 11:31:12,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:31:12,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:31:12,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879711604] [2020-10-16 11:31:12,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:31:12,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:12,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:31:12,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:31:12,943 INFO L87 Difference]: Start difference. First operand 171 states and 418 transitions. Second operand 5 states. [2020-10-16 11:31:13,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:13,040 INFO L93 Difference]: Finished difference Result 205 states and 460 transitions. [2020-10-16 11:31:13,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:31:13,043 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-16 11:31:13,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:13,046 INFO L225 Difference]: With dead ends: 205 [2020-10-16 11:31:13,046 INFO L226 Difference]: Without dead ends: 201 [2020-10-16 11:31:13,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:31:13,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-16 11:31:13,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 162. [2020-10-16 11:31:13,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-16 11:31:13,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 399 transitions. [2020-10-16 11:31:13,065 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 399 transitions. Word has length 9 [2020-10-16 11:31:13,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:13,066 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 399 transitions. [2020-10-16 11:31:13,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:31:13,066 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 399 transitions. [2020-10-16 11:31:13,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 11:31:13,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:13,067 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:13,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 11:31:13,068 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:31:13,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:13,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1027741454, now seen corresponding path program 1 times [2020-10-16 11:31:13,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:13,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378293519] [2020-10-16 11:31:13,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:13,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:31:13,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378293519] [2020-10-16 11:31:13,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:31:13,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:31:13,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194383734] [2020-10-16 11:31:13,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:31:13,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:13,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:31:13,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:31:13,125 INFO L87 Difference]: Start difference. First operand 162 states and 399 transitions. Second operand 5 states. [2020-10-16 11:31:13,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:13,235 INFO L93 Difference]: Finished difference Result 189 states and 423 transitions. [2020-10-16 11:31:13,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:31:13,236 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 11:31:13,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:13,238 INFO L225 Difference]: With dead ends: 189 [2020-10-16 11:31:13,238 INFO L226 Difference]: Without dead ends: 185 [2020-10-16 11:31:13,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:31:13,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-16 11:31:13,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 153. [2020-10-16 11:31:13,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-16 11:31:13,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 367 transitions. [2020-10-16 11:31:13,260 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 367 transitions. Word has length 13 [2020-10-16 11:31:13,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:13,261 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 367 transitions. [2020-10-16 11:31:13,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:31:13,262 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 367 transitions. [2020-10-16 11:31:13,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 11:31:13,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:13,263 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:13,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 11:31:13,264 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:31:13,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:13,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1792799235, now seen corresponding path program 1 times [2020-10-16 11:31:13,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:13,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283699054] [2020-10-16 11:31:13,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:13,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:31:13,285 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:31:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:31:13,310 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:31:13,321 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 11:31:13,322 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 11:31:13,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 11:31:13,322 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 11:31:13,323 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 11:31:13,325 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-16 11:31:13,341 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,341 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,341 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,342 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,345 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,345 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,345 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,346 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,346 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,346 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,346 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,346 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,346 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,347 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,347 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,347 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,347 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,347 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,347 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,348 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,348 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,349 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,349 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,349 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,349 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,350 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,350 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,350 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,350 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,350 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,351 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,351 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,352 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,352 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,352 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,352 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,352 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,353 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,353 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,353 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,353 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,355 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,356 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,357 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,357 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,357 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,357 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,357 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,357 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,358 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,358 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,359 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,359 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,359 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,359 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,360 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,361 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,361 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,362 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,362 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,362 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,363 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,364 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,364 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,364 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,364 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,366 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,366 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,366 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,367 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,367 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,367 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,369 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,369 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,370 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,370 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,370 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,370 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,372 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,372 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,372 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,373 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,373 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,373 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:13,375 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:31:13,375 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-16 11:31:13,375 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:31:13,376 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:31:13,376 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:31:13,376 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:31:13,376 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:31:13,376 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:31:13,376 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:31:13,377 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:31:13,379 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:31:13,379 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 90 transitions, 222 flow [2020-10-16 11:31:13,380 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 90 transitions, 222 flow [2020-10-16 11:31:13,380 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 90 transitions, 222 flow [2020-10-16 11:31:13,403 INFO L129 PetriNetUnfolder]: 6/110 cut-off events. [2020-10-16 11:31:13,403 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 11:31:13,405 INFO L80 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 110 events. 6/110 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 163 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 124. Up to 8 conditions per place. [2020-10-16 11:31:13,408 INFO L117 LiptonReduction]: Number of co-enabled transitions 1308 [2020-10-16 11:31:14,751 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-10-16 11:31:14,998 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-10-16 11:31:15,142 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-16 11:31:15,149 INFO L132 LiptonReduction]: Checked pairs total: 1841 [2020-10-16 11:31:15,149 INFO L134 LiptonReduction]: Total number of compositions: 79 [2020-10-16 11:31:15,149 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 27 transitions, 96 flow [2020-10-16 11:31:15,179 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 683 states. [2020-10-16 11:31:15,179 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states. [2020-10-16 11:31:15,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-16 11:31:15,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:15,180 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-16 11:31:15,180 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:31:15,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:15,181 INFO L82 PathProgramCache]: Analyzing trace with hash 567457, now seen corresponding path program 1 times [2020-10-16 11:31:15,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:15,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121930880] [2020-10-16 11:31:15,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:15,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:15,202 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 11:31:15,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121930880] [2020-10-16 11:31:15,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:31:15,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:31:15,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698023826] [2020-10-16 11:31:15,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:31:15,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:15,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:31:15,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:31:15,204 INFO L87 Difference]: Start difference. First operand 683 states. Second operand 3 states. [2020-10-16 11:31:15,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:15,254 INFO L93 Difference]: Finished difference Result 600 states and 1886 transitions. [2020-10-16 11:31:15,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:31:15,258 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-16 11:31:15,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:15,266 INFO L225 Difference]: With dead ends: 600 [2020-10-16 11:31:15,266 INFO L226 Difference]: Without dead ends: 559 [2020-10-16 11:31:15,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:31:15,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-10-16 11:31:15,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2020-10-16 11:31:15,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-16 11:31:15,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1737 transitions. [2020-10-16 11:31:15,320 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1737 transitions. Word has length 3 [2020-10-16 11:31:15,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:15,321 INFO L481 AbstractCegarLoop]: Abstraction has 559 states and 1737 transitions. [2020-10-16 11:31:15,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:31:15,321 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1737 transitions. [2020-10-16 11:31:15,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 11:31:15,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:15,322 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:15,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 11:31:15,322 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:31:15,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:15,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1052273544, now seen corresponding path program 1 times [2020-10-16 11:31:15,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:15,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717385057] [2020-10-16 11:31:15,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:15,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:15,364 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 11:31:15,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717385057] [2020-10-16 11:31:15,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:31:15,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:31:15,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448494236] [2020-10-16 11:31:15,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:31:15,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:15,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:31:15,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:31:15,367 INFO L87 Difference]: Start difference. First operand 559 states and 1737 transitions. Second operand 5 states. [2020-10-16 11:31:15,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:15,482 INFO L93 Difference]: Finished difference Result 817 states and 2317 transitions. [2020-10-16 11:31:15,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:31:15,483 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-16 11:31:15,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:15,490 INFO L225 Difference]: With dead ends: 817 [2020-10-16 11:31:15,491 INFO L226 Difference]: Without dead ends: 812 [2020-10-16 11:31:15,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:31:15,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-10-16 11:31:15,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 585. [2020-10-16 11:31:15,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-10-16 11:31:15,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1832 transitions. [2020-10-16 11:31:15,521 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1832 transitions. Word has length 9 [2020-10-16 11:31:15,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:15,522 INFO L481 AbstractCegarLoop]: Abstraction has 585 states and 1832 transitions. [2020-10-16 11:31:15,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:31:15,522 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1832 transitions. [2020-10-16 11:31:15,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 11:31:15,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:15,530 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:15,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 11:31:15,530 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:31:15,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:15,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1096280394, now seen corresponding path program 1 times [2020-10-16 11:31:15,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:15,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784913623] [2020-10-16 11:31:15,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:15,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:15,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:31:15,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784913623] [2020-10-16 11:31:15,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:31:15,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:31:15,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855718558] [2020-10-16 11:31:15,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:31:15,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:15,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:31:15,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:31:15,601 INFO L87 Difference]: Start difference. First operand 585 states and 1832 transitions. Second operand 5 states. [2020-10-16 11:31:15,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:15,708 INFO L93 Difference]: Finished difference Result 843 states and 2406 transitions. [2020-10-16 11:31:15,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:31:15,709 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 11:31:15,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:15,737 INFO L225 Difference]: With dead ends: 843 [2020-10-16 11:31:15,738 INFO L226 Difference]: Without dead ends: 836 [2020-10-16 11:31:15,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:31:15,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-10-16 11:31:15,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 611. [2020-10-16 11:31:15,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-10-16 11:31:15,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1906 transitions. [2020-10-16 11:31:15,773 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1906 transitions. Word has length 13 [2020-10-16 11:31:15,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:15,774 INFO L481 AbstractCegarLoop]: Abstraction has 611 states and 1906 transitions. [2020-10-16 11:31:15,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:31:15,774 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1906 transitions. [2020-10-16 11:31:15,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:31:15,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:15,780 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:15,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 11:31:15,780 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:31:15,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:15,781 INFO L82 PathProgramCache]: Analyzing trace with hash 2044985054, now seen corresponding path program 1 times [2020-10-16 11:31:15,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:15,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933505435] [2020-10-16 11:31:15,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:15,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:15,884 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 11:31:15,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933505435] [2020-10-16 11:31:15,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827343987] [2020-10-16 11:31:15,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:31:15,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:15,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 11:31:15,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:31:16,030 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 11:31:16,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:31:16,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 11:31:16,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918361208] [2020-10-16 11:31:16,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 11:31:16,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:16,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 11:31:16,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-16 11:31:16,032 INFO L87 Difference]: Start difference. First operand 611 states and 1906 transitions. Second operand 12 states. [2020-10-16 11:31:16,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:16,332 INFO L93 Difference]: Finished difference Result 1059 states and 2818 transitions. [2020-10-16 11:31:16,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:31:16,333 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 11:31:16,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:16,340 INFO L225 Difference]: With dead ends: 1059 [2020-10-16 11:31:16,341 INFO L226 Difference]: Without dead ends: 1052 [2020-10-16 11:31:16,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-16 11:31:16,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-10-16 11:31:16,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 591. [2020-10-16 11:31:16,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-10-16 11:31:16,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1840 transitions. [2020-10-16 11:31:16,377 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1840 transitions. Word has length 15 [2020-10-16 11:31:16,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:16,377 INFO L481 AbstractCegarLoop]: Abstraction has 591 states and 1840 transitions. [2020-10-16 11:31:16,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 11:31:16,378 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1840 transitions. [2020-10-16 11:31:16,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:31:16,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:16,379 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:16,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-16 11:31:16,595 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:31:16,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:16,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1258473782, now seen corresponding path program 2 times [2020-10-16 11:31:16,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:16,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504241989] [2020-10-16 11:31:16,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:16,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:16,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:31:16,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504241989] [2020-10-16 11:31:16,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:31:16,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:31:16,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769365405] [2020-10-16 11:31:16,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:31:16,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:16,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:31:16,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:31:16,646 INFO L87 Difference]: Start difference. First operand 591 states and 1840 transitions. Second operand 7 states. [2020-10-16 11:31:16,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:16,906 INFO L93 Difference]: Finished difference Result 1053 states and 2807 transitions. [2020-10-16 11:31:16,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:31:16,907 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-16 11:31:16,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:16,917 INFO L225 Difference]: With dead ends: 1053 [2020-10-16 11:31:16,917 INFO L226 Difference]: Without dead ends: 1045 [2020-10-16 11:31:16,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 11:31:16,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-10-16 11:31:16,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 536. [2020-10-16 11:31:16,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-10-16 11:31:16,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1688 transitions. [2020-10-16 11:31:16,949 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1688 transitions. Word has length 15 [2020-10-16 11:31:16,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:16,949 INFO L481 AbstractCegarLoop]: Abstraction has 536 states and 1688 transitions. [2020-10-16 11:31:16,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:31:16,950 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1688 transitions. [2020-10-16 11:31:16,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 11:31:16,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:16,952 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:16,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-16 11:31:16,952 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:31:16,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:16,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1734594488, now seen corresponding path program 1 times [2020-10-16 11:31:16,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:16,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572655135] [2020-10-16 11:31:16,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:16,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:17,028 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:31:17,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572655135] [2020-10-16 11:31:17,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:31:17,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:31:17,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702828209] [2020-10-16 11:31:17,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:31:17,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:17,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:31:17,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:31:17,030 INFO L87 Difference]: Start difference. First operand 536 states and 1688 transitions. Second operand 5 states. [2020-10-16 11:31:17,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:17,126 INFO L93 Difference]: Finished difference Result 736 states and 2123 transitions. [2020-10-16 11:31:17,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:31:17,127 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-16 11:31:17,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:17,132 INFO L225 Difference]: With dead ends: 736 [2020-10-16 11:31:17,132 INFO L226 Difference]: Without dead ends: 728 [2020-10-16 11:31:17,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:31:17,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-10-16 11:31:17,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 549. [2020-10-16 11:31:17,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-10-16 11:31:17,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 1684 transitions. [2020-10-16 11:31:17,156 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 1684 transitions. Word has length 17 [2020-10-16 11:31:17,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:17,156 INFO L481 AbstractCegarLoop]: Abstraction has 549 states and 1684 transitions. [2020-10-16 11:31:17,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:31:17,156 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 1684 transitions. [2020-10-16 11:31:17,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-16 11:31:17,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:17,157 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:17,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-16 11:31:17,158 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:31:17,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:17,158 INFO L82 PathProgramCache]: Analyzing trace with hash -2065233823, now seen corresponding path program 1 times [2020-10-16 11:31:17,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:17,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353817257] [2020-10-16 11:31:17,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:17,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:31:17,178 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:31:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:31:17,190 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:31:17,228 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 11:31:17,229 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 11:31:17,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-16 11:31:17,229 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 11:31:17,230 WARN L371 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 11:31:17,231 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-16 11:31:17,248 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,248 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,248 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,248 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,249 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,249 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,249 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,249 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,249 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,249 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,249 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,250 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,250 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,250 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,250 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,250 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,250 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,251 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,251 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,251 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,251 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,251 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,251 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,251 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,252 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,252 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,252 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,252 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,252 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,252 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,253 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,253 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,253 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,253 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,253 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,253 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,253 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,254 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,254 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,254 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,254 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,254 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,254 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,255 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,255 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,255 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,255 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,255 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,255 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,256 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,256 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,256 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,256 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,256 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,256 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,256 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,256 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,257 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,257 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,257 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,257 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,257 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,257 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,257 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,258 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,258 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,258 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,258 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,258 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,259 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,259 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,259 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,259 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,262 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,263 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,263 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,263 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,263 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,266 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,267 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,267 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,267 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,267 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,270 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,270 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,271 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,271 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,271 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,272 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,273 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,273 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,273 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,273 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,273 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,274 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,275 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,275 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,275 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,275 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,275 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,276 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,276 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,277 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,277 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,277 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,277 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,279 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,279 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,280 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,280 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,280 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,280 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:17,281 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:31:17,281 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-16 11:31:17,282 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:31:17,282 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:31:17,282 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:31:17,282 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:31:17,282 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:31:17,282 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:31:17,282 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:31:17,282 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:31:17,285 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:31:17,285 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 106 transitions, 276 flow [2020-10-16 11:31:17,285 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 106 transitions, 276 flow [2020-10-16 11:31:17,285 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 106 transitions, 276 flow [2020-10-16 11:31:17,314 INFO L129 PetriNetUnfolder]: 7/131 cut-off events. [2020-10-16 11:31:17,314 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 11:31:17,316 INFO L80 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 131 events. 7/131 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 201 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 151. Up to 10 conditions per place. [2020-10-16 11:31:17,319 INFO L117 LiptonReduction]: Number of co-enabled transitions 1756 [2020-10-16 11:31:18,907 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-10-16 11:31:19,183 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-16 11:31:19,358 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-10-16 11:31:19,447 INFO L132 LiptonReduction]: Checked pairs total: 2590 [2020-10-16 11:31:19,447 INFO L134 LiptonReduction]: Total number of compositions: 92 [2020-10-16 11:31:19,447 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 33 transitions, 130 flow [2020-10-16 11:31:19,582 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2060 states. [2020-10-16 11:31:19,582 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states. [2020-10-16 11:31:19,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-16 11:31:19,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:19,583 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-16 11:31:19,583 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:31:19,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:19,584 INFO L82 PathProgramCache]: Analyzing trace with hash 779528, now seen corresponding path program 1 times [2020-10-16 11:31:19,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:19,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832454859] [2020-10-16 11:31:19,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:19,622 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 11:31:19,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832454859] [2020-10-16 11:31:19,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:31:19,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:31:19,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816763343] [2020-10-16 11:31:19,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:31:19,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:19,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:31:19,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:31:19,624 INFO L87 Difference]: Start difference. First operand 2060 states. Second operand 3 states. [2020-10-16 11:31:19,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:19,665 INFO L93 Difference]: Finished difference Result 1889 states and 7217 transitions. [2020-10-16 11:31:19,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:31:19,666 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-16 11:31:19,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:19,682 INFO L225 Difference]: With dead ends: 1889 [2020-10-16 11:31:19,682 INFO L226 Difference]: Without dead ends: 1767 [2020-10-16 11:31:19,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:31:19,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-10-16 11:31:19,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1767. [2020-10-16 11:31:19,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2020-10-16 11:31:19,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 6690 transitions. [2020-10-16 11:31:19,809 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 6690 transitions. Word has length 3 [2020-10-16 11:31:19,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:19,809 INFO L481 AbstractCegarLoop]: Abstraction has 1767 states and 6690 transitions. [2020-10-16 11:31:19,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:31:19,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 6690 transitions. [2020-10-16 11:31:19,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 11:31:19,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:19,810 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:19,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-16 11:31:19,810 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:31:19,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:19,811 INFO L82 PathProgramCache]: Analyzing trace with hash -666106918, now seen corresponding path program 1 times [2020-10-16 11:31:19,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:19,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265052172] [2020-10-16 11:31:19,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:19,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:19,844 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 11:31:19,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265052172] [2020-10-16 11:31:19,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:31:19,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:31:19,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960443952] [2020-10-16 11:31:19,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:31:19,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:19,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:31:19,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:31:19,846 INFO L87 Difference]: Start difference. First operand 1767 states and 6690 transitions. Second operand 5 states. [2020-10-16 11:31:19,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:19,942 INFO L93 Difference]: Finished difference Result 2905 states and 10138 transitions. [2020-10-16 11:31:19,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:31:19,942 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-16 11:31:19,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:19,965 INFO L225 Difference]: With dead ends: 2905 [2020-10-16 11:31:19,966 INFO L226 Difference]: Without dead ends: 2899 [2020-10-16 11:31:19,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:31:19,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-10-16 11:31:20,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1966. [2020-10-16 11:31:20,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1966 states. [2020-10-16 11:31:20,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 7503 transitions. [2020-10-16 11:31:20,071 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 7503 transitions. Word has length 9 [2020-10-16 11:31:20,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:20,072 INFO L481 AbstractCegarLoop]: Abstraction has 1966 states and 7503 transitions. [2020-10-16 11:31:20,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:31:20,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 7503 transitions. [2020-10-16 11:31:20,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 11:31:20,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:20,073 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:20,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-16 11:31:20,073 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:31:20,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:20,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1766896000, now seen corresponding path program 1 times [2020-10-16 11:31:20,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:20,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589437574] [2020-10-16 11:31:20,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:20,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:20,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:31:20,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589437574] [2020-10-16 11:31:20,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:31:20,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:31:20,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605680521] [2020-10-16 11:31:20,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:31:20,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:20,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:31:20,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:31:20,116 INFO L87 Difference]: Start difference. First operand 1966 states and 7503 transitions. Second operand 5 states. [2020-10-16 11:31:20,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:20,218 INFO L93 Difference]: Finished difference Result 3204 states and 11312 transitions. [2020-10-16 11:31:20,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:31:20,219 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 11:31:20,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:20,247 INFO L225 Difference]: With dead ends: 3204 [2020-10-16 11:31:20,247 INFO L226 Difference]: Without dead ends: 3194 [2020-10-16 11:31:20,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:31:20,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2020-10-16 11:31:20,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 2200. [2020-10-16 11:31:20,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-10-16 11:31:20,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 8453 transitions. [2020-10-16 11:31:20,356 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 8453 transitions. Word has length 13 [2020-10-16 11:31:20,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:20,357 INFO L481 AbstractCegarLoop]: Abstraction has 2200 states and 8453 transitions. [2020-10-16 11:31:20,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:31:20,357 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 8453 transitions. [2020-10-16 11:31:20,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:31:20,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:20,358 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:20,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-16 11:31:20,358 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:31:20,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:20,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1022394712, now seen corresponding path program 1 times [2020-10-16 11:31:20,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:20,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256032152] [2020-10-16 11:31:20,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:20,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:20,408 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 11:31:20,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256032152] [2020-10-16 11:31:20,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113828382] [2020-10-16 11:31:20,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:31:20,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:20,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 11:31:20,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:31:20,558 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 11:31:20,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:31:20,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 11:31:20,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397074275] [2020-10-16 11:31:20,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 11:31:20,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:20,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 11:31:20,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 11:31:20,561 INFO L87 Difference]: Start difference. First operand 2200 states and 8453 transitions. Second operand 12 states. [2020-10-16 11:31:20,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:20,959 INFO L93 Difference]: Finished difference Result 4556 states and 14911 transitions. [2020-10-16 11:31:20,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:31:20,959 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 11:31:20,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:20,987 INFO L225 Difference]: With dead ends: 4556 [2020-10-16 11:31:20,987 INFO L226 Difference]: Without dead ends: 4546 [2020-10-16 11:31:20,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-16 11:31:21,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4546 states. [2020-10-16 11:31:21,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4546 to 2157. [2020-10-16 11:31:21,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2157 states. [2020-10-16 11:31:21,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 8278 transitions. [2020-10-16 11:31:21,108 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 8278 transitions. Word has length 15 [2020-10-16 11:31:21,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:21,108 INFO L481 AbstractCegarLoop]: Abstraction has 2157 states and 8278 transitions. [2020-10-16 11:31:21,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 11:31:21,109 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 8278 transitions. [2020-10-16 11:31:21,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:31:21,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:21,109 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:21,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-16 11:31:21,323 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:31:21,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:21,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1474969304, now seen corresponding path program 2 times [2020-10-16 11:31:21,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:21,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861786197] [2020-10-16 11:31:21,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:21,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:21,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:31:21,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861786197] [2020-10-16 11:31:21,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:31:21,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:31:21,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782062662] [2020-10-16 11:31:21,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:31:21,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:21,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:31:21,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:31:21,379 INFO L87 Difference]: Start difference. First operand 2157 states and 8278 transitions. Second operand 7 states. [2020-10-16 11:31:21,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:21,664 INFO L93 Difference]: Finished difference Result 4612 states and 15111 transitions. [2020-10-16 11:31:21,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:31:21,664 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-16 11:31:21,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:21,684 INFO L225 Difference]: With dead ends: 4612 [2020-10-16 11:31:21,684 INFO L226 Difference]: Without dead ends: 4601 [2020-10-16 11:31:21,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 11:31:21,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2020-10-16 11:31:21,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 2035. [2020-10-16 11:31:21,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2035 states. [2020-10-16 11:31:21,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 7845 transitions. [2020-10-16 11:31:21,799 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 7845 transitions. Word has length 15 [2020-10-16 11:31:21,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:21,800 INFO L481 AbstractCegarLoop]: Abstraction has 2035 states and 7845 transitions. [2020-10-16 11:31:21,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:31:21,800 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 7845 transitions. [2020-10-16 11:31:21,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 11:31:21,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:21,801 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:21,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-16 11:31:21,801 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:31:21,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:21,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1278978660, now seen corresponding path program 1 times [2020-10-16 11:31:21,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:21,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471467764] [2020-10-16 11:31:21,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:21,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:21,840 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:31:21,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471467764] [2020-10-16 11:31:21,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:31:21,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:31:21,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786910322] [2020-10-16 11:31:21,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:31:21,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:21,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:31:21,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:31:21,842 INFO L87 Difference]: Start difference. First operand 2035 states and 7845 transitions. Second operand 5 states. [2020-10-16 11:31:21,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:21,955 INFO L93 Difference]: Finished difference Result 3265 states and 11681 transitions. [2020-10-16 11:31:21,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:31:21,955 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-16 11:31:21,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:21,969 INFO L225 Difference]: With dead ends: 3265 [2020-10-16 11:31:21,969 INFO L226 Difference]: Without dead ends: 3250 [2020-10-16 11:31:21,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:31:21,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2020-10-16 11:31:22,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 2281. [2020-10-16 11:31:22,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2020-10-16 11:31:22,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 8755 transitions. [2020-10-16 11:31:22,071 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 8755 transitions. Word has length 17 [2020-10-16 11:31:22,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:22,072 INFO L481 AbstractCegarLoop]: Abstraction has 2281 states and 8755 transitions. [2020-10-16 11:31:22,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:31:22,072 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 8755 transitions. [2020-10-16 11:31:22,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:31:22,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:22,074 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:22,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-16 11:31:22,074 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:31:22,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:22,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1455436228, now seen corresponding path program 1 times [2020-10-16 11:31:22,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:22,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767782674] [2020-10-16 11:31:22,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:22,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:22,219 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 11:31:22,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767782674] [2020-10-16 11:31:22,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882185074] [2020-10-16 11:31:22,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:31:22,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:22,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 11:31:22,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:31:22,348 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 11:31:22,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:31:22,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 11:31:22,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369830068] [2020-10-16 11:31:22,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 11:31:22,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:22,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 11:31:22,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 11:31:22,350 INFO L87 Difference]: Start difference. First operand 2281 states and 8755 transitions. Second operand 12 states. [2020-10-16 11:31:22,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:22,720 INFO L93 Difference]: Finished difference Result 4825 states and 15986 transitions. [2020-10-16 11:31:22,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:31:22,721 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-16 11:31:22,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:22,740 INFO L225 Difference]: With dead ends: 4825 [2020-10-16 11:31:22,740 INFO L226 Difference]: Without dead ends: 4813 [2020-10-16 11:31:22,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-16 11:31:22,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4813 states. [2020-10-16 11:31:22,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4813 to 2305. [2020-10-16 11:31:22,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-10-16 11:31:22,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 8815 transitions. [2020-10-16 11:31:22,860 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 8815 transitions. Word has length 19 [2020-10-16 11:31:22,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:22,860 INFO L481 AbstractCegarLoop]: Abstraction has 2305 states and 8815 transitions. [2020-10-16 11:31:22,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 11:31:22,861 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 8815 transitions. [2020-10-16 11:31:22,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:31:22,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:22,865 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:23,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:31:23,082 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:31:23,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:23,082 INFO L82 PathProgramCache]: Analyzing trace with hash -979473248, now seen corresponding path program 1 times [2020-10-16 11:31:23,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:23,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179049592] [2020-10-16 11:31:23,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:23,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:23,160 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:31:23,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179049592] [2020-10-16 11:31:23,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994328527] [2020-10-16 11:31:23,161 INFO L95 rtionOrderModulation]: Keeping assertion order 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 11:31:23,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:23,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 11:31:23,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:31:23,340 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:31:23,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:31:23,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 11:31:23,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459574621] [2020-10-16 11:31:23,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 11:31:23,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:23,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 11:31:23,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 11:31:23,343 INFO L87 Difference]: Start difference. First operand 2305 states and 8815 transitions. Second operand 12 states. [2020-10-16 11:31:23,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:23,724 INFO L93 Difference]: Finished difference Result 4942 states and 16410 transitions. [2020-10-16 11:31:23,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:31:23,725 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-16 11:31:23,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:23,743 INFO L225 Difference]: With dead ends: 4942 [2020-10-16 11:31:23,743 INFO L226 Difference]: Without dead ends: 4925 [2020-10-16 11:31:23,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-16 11:31:23,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4925 states. [2020-10-16 11:31:23,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4925 to 2299. [2020-10-16 11:31:23,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2299 states. [2020-10-16 11:31:23,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 8782 transitions. [2020-10-16 11:31:23,959 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 8782 transitions. Word has length 19 [2020-10-16 11:31:23,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:23,959 INFO L481 AbstractCegarLoop]: Abstraction has 2299 states and 8782 transitions. [2020-10-16 11:31:23,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 11:31:23,960 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 8782 transitions. [2020-10-16 11:31:23,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:31:23,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:23,961 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:24,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:31:24,175 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:31:24,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:24,175 INFO L82 PathProgramCache]: Analyzing trace with hash -737855584, now seen corresponding path program 2 times [2020-10-16 11:31:24,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:24,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422744856] [2020-10-16 11:31:24,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:24,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:24,258 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:31:24,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422744856] [2020-10-16 11:31:24,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:31:24,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:31:24,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973166555] [2020-10-16 11:31:24,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:31:24,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:24,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:31:24,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:31:24,260 INFO L87 Difference]: Start difference. First operand 2299 states and 8782 transitions. Second operand 7 states. [2020-10-16 11:31:24,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:24,546 INFO L93 Difference]: Finished difference Result 4934 states and 16393 transitions. [2020-10-16 11:31:24,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:31:24,547 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-16 11:31:24,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:24,556 INFO L225 Difference]: With dead ends: 4934 [2020-10-16 11:31:24,556 INFO L226 Difference]: Without dead ends: 4917 [2020-10-16 11:31:24,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 11:31:24,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4917 states. [2020-10-16 11:31:24,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4917 to 2216. [2020-10-16 11:31:24,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2216 states. [2020-10-16 11:31:24,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 8477 transitions. [2020-10-16 11:31:24,650 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 8477 transitions. Word has length 19 [2020-10-16 11:31:24,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:24,651 INFO L481 AbstractCegarLoop]: Abstraction has 2216 states and 8477 transitions. [2020-10-16 11:31:24,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:31:24,651 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 8477 transitions. [2020-10-16 11:31:24,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:31:24,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:24,652 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:24,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-16 11:31:24,653 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:31:24,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:24,653 INFO L82 PathProgramCache]: Analyzing trace with hash -737840828, now seen corresponding path program 2 times [2020-10-16 11:31:24,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:24,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179215100] [2020-10-16 11:31:24,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:24,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:24,711 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:31:24,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179215100] [2020-10-16 11:31:24,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:31:24,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:31:24,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069547921] [2020-10-16 11:31:24,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:31:24,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:24,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:31:24,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:31:24,714 INFO L87 Difference]: Start difference. First operand 2216 states and 8477 transitions. Second operand 7 states. [2020-10-16 11:31:24,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:25,000 INFO L93 Difference]: Finished difference Result 4774 states and 15828 transitions. [2020-10-16 11:31:25,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:31:25,000 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-16 11:31:25,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:25,008 INFO L225 Difference]: With dead ends: 4774 [2020-10-16 11:31:25,008 INFO L226 Difference]: Without dead ends: 4757 [2020-10-16 11:31:25,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 11:31:25,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2020-10-16 11:31:25,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 2150. [2020-10-16 11:31:25,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2150 states. [2020-10-16 11:31:25,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 8243 transitions. [2020-10-16 11:31:25,091 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 8243 transitions. Word has length 19 [2020-10-16 11:31:25,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:25,091 INFO L481 AbstractCegarLoop]: Abstraction has 2150 states and 8243 transitions. [2020-10-16 11:31:25,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:31:25,091 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 8243 transitions. [2020-10-16 11:31:25,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:31:25,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:25,093 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:25,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-16 11:31:25,093 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:31:25,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:25,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1726751032, now seen corresponding path program 1 times [2020-10-16 11:31:25,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:25,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726943782] [2020-10-16 11:31:25,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:25,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:25,164 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:31:25,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726943782] [2020-10-16 11:31:25,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143225133] [2020-10-16 11:31:25,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:31:25,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:25,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:31:25,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:31:25,409 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:31:25,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:31:25,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 11:31:25,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790593148] [2020-10-16 11:31:25,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 11:31:25,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:25,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 11:31:25,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 11:31:25,412 INFO L87 Difference]: Start difference. First operand 2150 states and 8243 transitions. Second operand 16 states. [2020-10-16 11:31:26,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:26,215 INFO L93 Difference]: Finished difference Result 6025 states and 18746 transitions. [2020-10-16 11:31:26,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:31:26,216 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-16 11:31:26,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:26,225 INFO L225 Difference]: With dead ends: 6025 [2020-10-16 11:31:26,226 INFO L226 Difference]: Without dead ends: 6017 [2020-10-16 11:31:26,226 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 11:31:26,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6017 states. [2020-10-16 11:31:26,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6017 to 2117. [2020-10-16 11:31:26,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2117 states. [2020-10-16 11:31:26,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 8106 transitions. [2020-10-16 11:31:26,301 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 8106 transitions. Word has length 21 [2020-10-16 11:31:26,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:26,301 INFO L481 AbstractCegarLoop]: Abstraction has 2117 states and 8106 transitions. [2020-10-16 11:31:26,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 11:31:26,301 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 8106 transitions. [2020-10-16 11:31:26,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:31:26,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:26,303 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:26,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-16 11:31:26,504 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:31:26,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:26,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1485133368, now seen corresponding path program 2 times [2020-10-16 11:31:26,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:26,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671311302] [2020-10-16 11:31:26,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:26,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:26,577 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 11:31:26,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671311302] [2020-10-16 11:31:26,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525303892] [2020-10-16 11:31:26,578 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 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 11:31:26,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:31:26,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:31:26,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:31:26,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:31:26,783 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 11:31:26,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:31:26,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 11:31:26,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697945187] [2020-10-16 11:31:26,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 11:31:26,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:26,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 11:31:26,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 11:31:26,787 INFO L87 Difference]: Start difference. First operand 2117 states and 8106 transitions. Second operand 16 states. [2020-10-16 11:31:27,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:27,603 INFO L93 Difference]: Finished difference Result 5914 states and 18384 transitions. [2020-10-16 11:31:27,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:31:27,606 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-16 11:31:27,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:27,619 INFO L225 Difference]: With dead ends: 5914 [2020-10-16 11:31:27,619 INFO L226 Difference]: Without dead ends: 5903 [2020-10-16 11:31:27,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 11:31:27,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5903 states. [2020-10-16 11:31:27,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5903 to 2085. [2020-10-16 11:31:27,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2085 states. [2020-10-16 11:31:27,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 7975 transitions. [2020-10-16 11:31:27,714 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 7975 transitions. Word has length 21 [2020-10-16 11:31:27,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:27,715 INFO L481 AbstractCegarLoop]: Abstraction has 2085 states and 7975 transitions. [2020-10-16 11:31:27,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 11:31:27,715 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 7975 transitions. [2020-10-16 11:31:27,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:31:27,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:27,718 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:27,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:31:27,932 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:31:27,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:27,932 INFO L82 PathProgramCache]: Analyzing trace with hash -268549816, now seen corresponding path program 3 times [2020-10-16 11:31:27,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:27,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265524738] [2020-10-16 11:31:27,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:27,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:27,995 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:31:27,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265524738] [2020-10-16 11:31:27,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882572000] [2020-10-16 11:31:27,996 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 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 11:31:28,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 11:31:28,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:31:28,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:31:28,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:31:28,212 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:31:28,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:31:28,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 11:31:28,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034314765] [2020-10-16 11:31:28,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 11:31:28,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:28,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 11:31:28,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 11:31:28,214 INFO L87 Difference]: Start difference. First operand 2085 states and 7975 transitions. Second operand 16 states. [2020-10-16 11:31:29,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:29,006 INFO L93 Difference]: Finished difference Result 5907 states and 18375 transitions. [2020-10-16 11:31:29,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:31:29,007 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-16 11:31:29,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:29,016 INFO L225 Difference]: With dead ends: 5907 [2020-10-16 11:31:29,016 INFO L226 Difference]: Without dead ends: 5899 [2020-10-16 11:31:29,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 11:31:29,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5899 states. [2020-10-16 11:31:29,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5899 to 2008. [2020-10-16 11:31:29,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2008 states. [2020-10-16 11:31:29,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 7698 transitions. [2020-10-16 11:31:29,095 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 7698 transitions. Word has length 21 [2020-10-16 11:31:29,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:29,095 INFO L481 AbstractCegarLoop]: Abstraction has 2008 states and 7698 transitions. [2020-10-16 11:31:29,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 11:31:29,095 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 7698 transitions. [2020-10-16 11:31:29,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:31:29,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:29,097 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:29,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-10-16 11:31:29,313 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:31:29,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:29,313 INFO L82 PathProgramCache]: Analyzing trace with hash -675948728, now seen corresponding path program 4 times [2020-10-16 11:31:29,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:29,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14208885] [2020-10-16 11:31:29,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:29,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:29,553 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:31:29,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14208885] [2020-10-16 11:31:29,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099825973] [2020-10-16 11:31:29,554 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 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 11:31:29,626 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 11:31:29,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:31:29,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:31:29,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:31:29,725 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:31:29,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:31:29,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 11:31:29,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532350848] [2020-10-16 11:31:29,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 11:31:29,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:29,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 11:31:29,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 11:31:29,728 INFO L87 Difference]: Start difference. First operand 2008 states and 7698 transitions. Second operand 16 states. [2020-10-16 11:31:30,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:30,557 INFO L93 Difference]: Finished difference Result 5835 states and 18155 transitions. [2020-10-16 11:31:30,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:31:30,558 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-16 11:31:30,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:30,568 INFO L225 Difference]: With dead ends: 5835 [2020-10-16 11:31:30,568 INFO L226 Difference]: Without dead ends: 5824 [2020-10-16 11:31:30,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 11:31:30,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5824 states. [2020-10-16 11:31:30,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5824 to 1976. [2020-10-16 11:31:30,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1976 states. [2020-10-16 11:31:30,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 7567 transitions. [2020-10-16 11:31:30,652 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 7567 transitions. Word has length 21 [2020-10-16 11:31:30,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:30,652 INFO L481 AbstractCegarLoop]: Abstraction has 1976 states and 7567 transitions. [2020-10-16 11:31:30,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 11:31:30,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 7567 transitions. [2020-10-16 11:31:30,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:31:30,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:30,654 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:30,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-16 11:31:30,869 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:31:30,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:30,869 INFO L82 PathProgramCache]: Analyzing trace with hash -409607608, now seen corresponding path program 5 times [2020-10-16 11:31:30,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:30,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452417064] [2020-10-16 11:31:30,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:30,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:30,943 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:31:30,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452417064] [2020-10-16 11:31:30,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:31:30,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:31:30,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149391494] [2020-10-16 11:31:30,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:31:30,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:30,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:31:30,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:31:30,945 INFO L87 Difference]: Start difference. First operand 1976 states and 7567 transitions. Second operand 9 states. [2020-10-16 11:31:31,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:31,649 INFO L93 Difference]: Finished difference Result 5820 states and 18126 transitions. [2020-10-16 11:31:31,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:31:31,649 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 11:31:31,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:31,659 INFO L225 Difference]: With dead ends: 5820 [2020-10-16 11:31:31,659 INFO L226 Difference]: Without dead ends: 5812 [2020-10-16 11:31:31,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:31:31,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5812 states. [2020-10-16 11:31:31,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5812 to 1907. [2020-10-16 11:31:31,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1907 states. [2020-10-16 11:31:31,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 7310 transitions. [2020-10-16 11:31:31,808 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 7310 transitions. Word has length 21 [2020-10-16 11:31:31,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:31,808 INFO L481 AbstractCegarLoop]: Abstraction has 1907 states and 7310 transitions. [2020-10-16 11:31:31,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:31:31,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 7310 transitions. [2020-10-16 11:31:31,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:31:31,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:31,810 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:31,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-16 11:31:31,810 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:31:31,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:31,811 INFO L82 PathProgramCache]: Analyzing trace with hash -395441848, now seen corresponding path program 6 times [2020-10-16 11:31:31,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:31,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629251557] [2020-10-16 11:31:31,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:31,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:31,903 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:31:31,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629251557] [2020-10-16 11:31:31,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:31:31,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:31:31,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443388330] [2020-10-16 11:31:31,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:31:31,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:31,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:31:31,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:31:31,906 INFO L87 Difference]: Start difference. First operand 1907 states and 7310 transitions. Second operand 9 states. [2020-10-16 11:31:32,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:32,611 INFO L93 Difference]: Finished difference Result 5717 states and 17784 transitions. [2020-10-16 11:31:32,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:31:32,612 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 11:31:32,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:32,621 INFO L225 Difference]: With dead ends: 5717 [2020-10-16 11:31:32,622 INFO L226 Difference]: Without dead ends: 5705 [2020-10-16 11:31:32,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:31:32,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5705 states. [2020-10-16 11:31:32,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5705 to 1800. [2020-10-16 11:31:32,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1800 states. [2020-10-16 11:31:32,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 6961 transitions. [2020-10-16 11:31:32,705 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 6961 transitions. Word has length 21 [2020-10-16 11:31:32,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:32,706 INFO L481 AbstractCegarLoop]: Abstraction has 1800 states and 6961 transitions. [2020-10-16 11:31:32,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:31:32,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 6961 transitions. [2020-10-16 11:31:32,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:31:32,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:32,707 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:32,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-16 11:31:32,708 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:31:32,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:32,708 INFO L82 PathProgramCache]: Analyzing trace with hash -334654421, now seen corresponding path program 1 times [2020-10-16 11:31:32,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:32,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984934228] [2020-10-16 11:31:32,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:32,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:32,758 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:31:32,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984934228] [2020-10-16 11:31:32,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:31:32,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:31:32,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777599218] [2020-10-16 11:31:32,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:31:32,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:32,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:31:32,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:31:32,760 INFO L87 Difference]: Start difference. First operand 1800 states and 6961 transitions. Second operand 5 states. [2020-10-16 11:31:32,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:32,849 INFO L93 Difference]: Finished difference Result 2762 states and 9976 transitions. [2020-10-16 11:31:32,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:31:32,850 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-16 11:31:32,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:32,856 INFO L225 Difference]: With dead ends: 2762 [2020-10-16 11:31:32,857 INFO L226 Difference]: Without dead ends: 2746 [2020-10-16 11:31:32,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:31:32,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2020-10-16 11:31:32,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 1965. [2020-10-16 11:31:32,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2020-10-16 11:31:32,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 7429 transitions. [2020-10-16 11:31:32,913 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 7429 transitions. Word has length 21 [2020-10-16 11:31:32,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:32,913 INFO L481 AbstractCegarLoop]: Abstraction has 1965 states and 7429 transitions. [2020-10-16 11:31:32,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:31:32,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 7429 transitions. [2020-10-16 11:31:32,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-16 11:31:32,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:32,917 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:32,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-16 11:31:32,917 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:31:32,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:32,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1788555247, now seen corresponding path program 1 times [2020-10-16 11:31:32,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:32,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041684183] [2020-10-16 11:31:32,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:32,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:31:32,932 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:31:32,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:31:32,941 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:31:32,957 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 11:31:32,957 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 11:31:32,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-16 11:31:32,957 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 11:31:32,959 WARN L371 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 11:31:32,959 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-16 11:31:32,976 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,976 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,976 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,976 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,976 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,976 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,977 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,977 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,977 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,977 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,977 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,977 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,977 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,978 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,978 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,979 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,979 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,979 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,980 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,980 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,980 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,980 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,980 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,980 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,980 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,981 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,981 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,981 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,981 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,981 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,981 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,982 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,982 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,982 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,982 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,982 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,982 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,982 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,983 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,983 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,983 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,983 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,983 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,983 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,983 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,984 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,984 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,984 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,984 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,984 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,984 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,984 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,984 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,985 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,985 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,985 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,985 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,985 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,985 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,986 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,986 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,986 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,986 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,986 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,986 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,986 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,987 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,987 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,987 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,987 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,987 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,987 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,987 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,987 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,988 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,988 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,988 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,988 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,988 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,988 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,988 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,989 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,989 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,989 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,989 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,990 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,990 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,990 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,990 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,990 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,994 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,994 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,994 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,994 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,994 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,995 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,995 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,995 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,995 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,995 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,996 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,996 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,997 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,997 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,997 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,998 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,998 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,998 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,999 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:32,999 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:33,000 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:33,000 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:33,000 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:33,000 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:33,001 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:33,001 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:33,001 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:33,001 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:33,002 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:33,002 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:33,002 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:33,002 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:33,003 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:33,003 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:33,003 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:33,003 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:33,003 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:33,003 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:33,004 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:33,004 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:33,004 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:33,004 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:33,004 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:33,004 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:33,005 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:33,005 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:33,005 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:33,005 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:33,005 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:33,005 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:31:33,006 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:31:33,007 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-16 11:31:33,007 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:31:33,007 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:31:33,007 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:31:33,007 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:31:33,007 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:31:33,007 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:31:33,007 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:31:33,008 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:31:33,009 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:31:33,009 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 122 transitions, 334 flow [2020-10-16 11:31:33,009 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 122 transitions, 334 flow [2020-10-16 11:31:33,009 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 137 places, 122 transitions, 334 flow [2020-10-16 11:31:33,029 INFO L129 PetriNetUnfolder]: 8/152 cut-off events. [2020-10-16 11:31:33,029 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-16 11:31:33,030 INFO L80 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 152 events. 8/152 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 251 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 179. Up to 12 conditions per place. [2020-10-16 11:31:33,034 INFO L117 LiptonReduction]: Number of co-enabled transitions 2264 [2020-10-16 11:31:34,690 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-10-16 11:31:34,921 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 58 [2020-10-16 11:31:35,132 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-10-16 11:31:35,211 INFO L132 LiptonReduction]: Checked pairs total: 4038 [2020-10-16 11:31:35,211 INFO L134 LiptonReduction]: Total number of compositions: 111 [2020-10-16 11:31:35,212 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 39 transitions, 168 flow [2020-10-16 11:31:35,586 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6191 states. [2020-10-16 11:31:35,586 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states. [2020-10-16 11:31:35,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-16 11:31:35,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:35,586 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-16 11:31:35,586 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:31:35,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:35,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1026170, now seen corresponding path program 1 times [2020-10-16 11:31:35,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:35,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397248569] [2020-10-16 11:31:35,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:35,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:35,607 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 11:31:35,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397248569] [2020-10-16 11:31:35,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:31:35,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:31:35,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898650897] [2020-10-16 11:31:35,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:31:35,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:35,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:31:35,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:31:35,609 INFO L87 Difference]: Start difference. First operand 6191 states. Second operand 3 states. [2020-10-16 11:31:35,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:35,686 INFO L93 Difference]: Finished difference Result 5844 states and 26316 transitions. [2020-10-16 11:31:35,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:31:35,687 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-16 11:31:35,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:35,706 INFO L225 Difference]: With dead ends: 5844 [2020-10-16 11:31:35,706 INFO L226 Difference]: Without dead ends: 5479 [2020-10-16 11:31:35,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:31:35,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5479 states. [2020-10-16 11:31:35,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5479 to 5479. [2020-10-16 11:31:35,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5479 states. [2020-10-16 11:31:35,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5479 states to 5479 states and 24493 transitions. [2020-10-16 11:31:35,978 INFO L78 Accepts]: Start accepts. Automaton has 5479 states and 24493 transitions. Word has length 3 [2020-10-16 11:31:35,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:35,978 INFO L481 AbstractCegarLoop]: Abstraction has 5479 states and 24493 transitions. [2020-10-16 11:31:35,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:31:35,978 INFO L276 IsEmpty]: Start isEmpty. Operand 5479 states and 24493 transitions. [2020-10-16 11:31:35,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 11:31:35,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:35,978 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:35,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-16 11:31:35,979 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:31:35,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:35,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1344335463, now seen corresponding path program 1 times [2020-10-16 11:31:35,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:35,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310306081] [2020-10-16 11:31:35,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:35,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:36,009 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 11:31:36,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310306081] [2020-10-16 11:31:36,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:31:36,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:31:36,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521410055] [2020-10-16 11:31:36,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:31:36,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:36,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:31:36,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:31:36,011 INFO L87 Difference]: Start difference. First operand 5479 states and 24493 transitions. Second operand 5 states. [2020-10-16 11:31:36,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:36,177 INFO L93 Difference]: Finished difference Result 9673 states and 40333 transitions. [2020-10-16 11:31:36,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:31:36,179 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-16 11:31:36,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:36,210 INFO L225 Difference]: With dead ends: 9673 [2020-10-16 11:31:36,210 INFO L226 Difference]: Without dead ends: 9666 [2020-10-16 11:31:36,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:31:36,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9666 states. [2020-10-16 11:31:36,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9666 to 6331. [2020-10-16 11:31:36,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6331 states. [2020-10-16 11:31:36,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 28544 transitions. [2020-10-16 11:31:36,407 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 28544 transitions. Word has length 9 [2020-10-16 11:31:36,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:36,407 INFO L481 AbstractCegarLoop]: Abstraction has 6331 states and 28544 transitions. [2020-10-16 11:31:36,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:31:36,408 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 28544 transitions. [2020-10-16 11:31:36,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 11:31:36,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:36,408 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:36,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-16 11:31:36,408 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:31:36,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:36,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1513378118, now seen corresponding path program 1 times [2020-10-16 11:31:36,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:36,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752659347] [2020-10-16 11:31:36,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:36,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:36,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:31:36,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752659347] [2020-10-16 11:31:36,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:31:36,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:31:36,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500625325] [2020-10-16 11:31:36,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:31:36,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:36,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:31:36,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:31:36,460 INFO L87 Difference]: Start difference. First operand 6331 states and 28544 transitions. Second operand 5 states. [2020-10-16 11:31:36,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:36,614 INFO L93 Difference]: Finished difference Result 11081 states and 46826 transitions. [2020-10-16 11:31:36,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:31:36,615 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 11:31:36,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:36,641 INFO L225 Difference]: With dead ends: 11081 [2020-10-16 11:31:36,641 INFO L226 Difference]: Without dead ends: 11068 [2020-10-16 11:31:36,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:31:36,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11068 states. [2020-10-16 11:31:36,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11068 to 7391. [2020-10-16 11:31:36,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7391 states. [2020-10-16 11:31:36,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7391 states to 7391 states and 33694 transitions. [2020-10-16 11:31:36,864 INFO L78 Accepts]: Start accepts. Automaton has 7391 states and 33694 transitions. Word has length 13 [2020-10-16 11:31:36,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:36,865 INFO L481 AbstractCegarLoop]: Abstraction has 7391 states and 33694 transitions. [2020-10-16 11:31:36,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:31:36,865 INFO L276 IsEmpty]: Start isEmpty. Operand 7391 states and 33694 transitions. [2020-10-16 11:31:36,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:31:36,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:36,866 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:36,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-16 11:31:36,866 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:31:36,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:36,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1678648171, now seen corresponding path program 1 times [2020-10-16 11:31:36,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:36,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119598062] [2020-10-16 11:31:36,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:36,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:36,914 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 11:31:36,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119598062] [2020-10-16 11:31:36,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559041491] [2020-10-16 11:31:36,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:31:37,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:37,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 11:31:37,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:31:37,692 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 11:31:37,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:31:37,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 11:31:37,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665220546] [2020-10-16 11:31:37,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 11:31:37,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:37,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 11:31:37,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 11:31:37,694 INFO L87 Difference]: Start difference. First operand 7391 states and 33694 transitions. Second operand 12 states. [2020-10-16 11:31:38,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:38,094 INFO L93 Difference]: Finished difference Result 16749 states and 66010 transitions. [2020-10-16 11:31:38,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:31:38,095 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 11:31:38,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:38,149 INFO L225 Difference]: With dead ends: 16749 [2020-10-16 11:31:38,149 INFO L226 Difference]: Without dead ends: 16736 [2020-10-16 11:31:38,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-16 11:31:38,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16736 states. [2020-10-16 11:31:38,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16736 to 7303. [2020-10-16 11:31:38,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7303 states. [2020-10-16 11:31:38,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7303 states to 7303 states and 33260 transitions. [2020-10-16 11:31:38,441 INFO L78 Accepts]: Start accepts. Automaton has 7303 states and 33260 transitions. Word has length 15 [2020-10-16 11:31:38,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:38,441 INFO L481 AbstractCegarLoop]: Abstraction has 7303 states and 33260 transitions. [2020-10-16 11:31:38,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 11:31:38,441 INFO L276 IsEmpty]: Start isEmpty. Operand 7303 states and 33260 transitions. [2020-10-16 11:31:38,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:31:38,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:38,441 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:38,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:31:38,645 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:31:38,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:38,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1637555113, now seen corresponding path program 2 times [2020-10-16 11:31:38,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:38,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783487147] [2020-10-16 11:31:38,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:38,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:38,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:31:38,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783487147] [2020-10-16 11:31:38,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:31:38,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:31:38,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680025487] [2020-10-16 11:31:38,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:31:38,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:38,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:31:38,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:31:38,708 INFO L87 Difference]: Start difference. First operand 7303 states and 33260 transitions. Second operand 7 states. [2020-10-16 11:31:39,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:39,074 INFO L93 Difference]: Finished difference Result 17085 states and 67393 transitions. [2020-10-16 11:31:39,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:31:39,074 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-16 11:31:39,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:39,115 INFO L225 Difference]: With dead ends: 17085 [2020-10-16 11:31:39,115 INFO L226 Difference]: Without dead ends: 17071 [2020-10-16 11:31:39,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 11:31:39,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17071 states. [2020-10-16 11:31:39,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17071 to 7048. [2020-10-16 11:31:39,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7048 states. [2020-10-16 11:31:39,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7048 states to 7048 states and 32136 transitions. [2020-10-16 11:31:39,509 INFO L78 Accepts]: Start accepts. Automaton has 7048 states and 32136 transitions. Word has length 15 [2020-10-16 11:31:39,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:39,509 INFO L481 AbstractCegarLoop]: Abstraction has 7048 states and 32136 transitions. [2020-10-16 11:31:39,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:31:39,509 INFO L276 IsEmpty]: Start isEmpty. Operand 7048 states and 32136 transitions. [2020-10-16 11:31:39,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 11:31:39,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:39,510 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:39,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-16 11:31:39,510 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:31:39,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:39,511 INFO L82 PathProgramCache]: Analyzing trace with hash -288445665, now seen corresponding path program 1 times [2020-10-16 11:31:39,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:39,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380750348] [2020-10-16 11:31:39,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:39,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:39,558 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:31:39,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380750348] [2020-10-16 11:31:39,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:31:39,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:31:39,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239446319] [2020-10-16 11:31:39,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:31:39,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:39,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:31:39,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:31:39,561 INFO L87 Difference]: Start difference. First operand 7048 states and 32136 transitions. Second operand 5 states. [2020-10-16 11:31:39,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:39,705 INFO L93 Difference]: Finished difference Result 12234 states and 52488 transitions. [2020-10-16 11:31:39,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:31:39,706 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-16 11:31:39,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:39,741 INFO L225 Difference]: With dead ends: 12234 [2020-10-16 11:31:39,742 INFO L226 Difference]: Without dead ends: 12212 [2020-10-16 11:31:39,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:31:39,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12212 states. [2020-10-16 11:31:39,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12212 to 8342. [2020-10-16 11:31:39,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8342 states. [2020-10-16 11:31:39,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8342 states to 8342 states and 38278 transitions. [2020-10-16 11:31:39,983 INFO L78 Accepts]: Start accepts. Automaton has 8342 states and 38278 transitions. Word has length 17 [2020-10-16 11:31:39,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:39,983 INFO L481 AbstractCegarLoop]: Abstraction has 8342 states and 38278 transitions. [2020-10-16 11:31:39,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:31:39,983 INFO L276 IsEmpty]: Start isEmpty. Operand 8342 states and 38278 transitions. [2020-10-16 11:31:39,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:31:39,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:39,984 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:39,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-16 11:31:39,984 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:31:39,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:39,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1255672082, now seen corresponding path program 1 times [2020-10-16 11:31:39,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:39,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191603155] [2020-10-16 11:31:39,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:39,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:40,040 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 11:31:40,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191603155] [2020-10-16 11:31:40,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732788376] [2020-10-16 11:31:40,041 INFO L95 rtionOrderModulation]: Keeping assertion order 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 11:31:40,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:40,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 11:31:40,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:31:40,172 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 11:31:40,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:31:40,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 11:31:40,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026237123] [2020-10-16 11:31:40,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 11:31:40,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:40,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 11:31:40,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 11:31:40,174 INFO L87 Difference]: Start difference. First operand 8342 states and 38278 transitions. Second operand 12 states. [2020-10-16 11:31:40,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:40,537 INFO L93 Difference]: Finished difference Result 19016 states and 76191 transitions. [2020-10-16 11:31:40,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:31:40,538 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-16 11:31:40,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:40,582 INFO L225 Difference]: With dead ends: 19016 [2020-10-16 11:31:40,582 INFO L226 Difference]: Without dead ends: 18998 [2020-10-16 11:31:40,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-16 11:31:40,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18998 states. [2020-10-16 11:31:41,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18998 to 8452. [2020-10-16 11:31:41,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8452 states. [2020-10-16 11:31:41,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8452 states to 8452 states and 38704 transitions. [2020-10-16 11:31:41,025 INFO L78 Accepts]: Start accepts. Automaton has 8452 states and 38704 transitions. Word has length 19 [2020-10-16 11:31:41,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:41,025 INFO L481 AbstractCegarLoop]: Abstraction has 8452 states and 38704 transitions. [2020-10-16 11:31:41,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 11:31:41,026 INFO L276 IsEmpty]: Start isEmpty. Operand 8452 states and 38704 transitions. [2020-10-16 11:31:41,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:31:41,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:41,027 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:41,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-16 11:31:41,241 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:31:41,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:41,242 INFO L82 PathProgramCache]: Analyzing trace with hash 402059005, now seen corresponding path program 1 times [2020-10-16 11:31:41,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:41,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148654149] [2020-10-16 11:31:41,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:41,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:41,283 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:31:41,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148654149] [2020-10-16 11:31:41,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982903135] [2020-10-16 11:31:41,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:31:41,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:41,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 11:31:41,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:31:41,432 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:31:41,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:31:41,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 11:31:41,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523930008] [2020-10-16 11:31:41,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 11:31:41,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:41,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 11:31:41,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 11:31:41,434 INFO L87 Difference]: Start difference. First operand 8452 states and 38704 transitions. Second operand 12 states. [2020-10-16 11:31:41,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:41,868 INFO L93 Difference]: Finished difference Result 19670 states and 79028 transitions. [2020-10-16 11:31:41,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:31:41,869 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-16 11:31:41,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:41,951 INFO L225 Difference]: With dead ends: 19670 [2020-10-16 11:31:41,951 INFO L226 Difference]: Without dead ends: 19645 [2020-10-16 11:31:41,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-16 11:31:42,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19645 states. [2020-10-16 11:31:42,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19645 to 8480. [2020-10-16 11:31:42,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8480 states. [2020-10-16 11:31:42,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8480 states to 8480 states and 38825 transitions. [2020-10-16 11:31:42,344 INFO L78 Accepts]: Start accepts. Automaton has 8480 states and 38825 transitions. Word has length 19 [2020-10-16 11:31:42,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:42,344 INFO L481 AbstractCegarLoop]: Abstraction has 8480 states and 38825 transitions. [2020-10-16 11:31:42,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 11:31:42,344 INFO L276 IsEmpty]: Start isEmpty. Operand 8480 states and 38825 transitions. [2020-10-16 11:31:42,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:31:42,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:42,346 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:42,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-16 11:31:42,559 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:31:42,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:42,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1976597437, now seen corresponding path program 2 times [2020-10-16 11:31:42,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:42,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930153635] [2020-10-16 11:31:42,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:42,606 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:31:42,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930153635] [2020-10-16 11:31:42,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:31:42,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:31:42,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272462935] [2020-10-16 11:31:42,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:31:42,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:42,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:31:42,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:31:42,608 INFO L87 Difference]: Start difference. First operand 8480 states and 38825 transitions. Second operand 7 states. [2020-10-16 11:31:43,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:43,037 INFO L93 Difference]: Finished difference Result 19852 states and 79846 transitions. [2020-10-16 11:31:43,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:31:43,037 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-16 11:31:43,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:43,293 INFO L225 Difference]: With dead ends: 19852 [2020-10-16 11:31:43,293 INFO L226 Difference]: Without dead ends: 19827 [2020-10-16 11:31:43,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 11:31:43,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19827 states. [2020-10-16 11:31:43,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19827 to 8379. [2020-10-16 11:31:43,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8379 states. [2020-10-16 11:31:43,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8379 states to 8379 states and 38406 transitions. [2020-10-16 11:31:43,789 INFO L78 Accepts]: Start accepts. Automaton has 8379 states and 38406 transitions. Word has length 19 [2020-10-16 11:31:43,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:43,789 INFO L481 AbstractCegarLoop]: Abstraction has 8379 states and 38406 transitions. [2020-10-16 11:31:43,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:31:43,789 INFO L276 IsEmpty]: Start isEmpty. Operand 8379 states and 38406 transitions. [2020-10-16 11:31:43,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:31:43,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:43,791 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:43,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-16 11:31:43,791 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:31:43,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:43,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1976577008, now seen corresponding path program 2 times [2020-10-16 11:31:43,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:43,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335745504] [2020-10-16 11:31:43,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:43,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:43,876 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:31:43,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335745504] [2020-10-16 11:31:43,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:31:43,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:31:43,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470866777] [2020-10-16 11:31:43,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:31:43,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:43,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:31:43,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:31:43,881 INFO L87 Difference]: Start difference. First operand 8379 states and 38406 transitions. Second operand 7 states. [2020-10-16 11:31:44,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:44,346 INFO L93 Difference]: Finished difference Result 19555 states and 78564 transitions. [2020-10-16 11:31:44,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:31:44,346 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-16 11:31:44,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:44,408 INFO L225 Difference]: With dead ends: 19555 [2020-10-16 11:31:44,408 INFO L226 Difference]: Without dead ends: 19530 [2020-10-16 11:31:44,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 11:31:44,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19530 states. [2020-10-16 11:31:44,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19530 to 8317. [2020-10-16 11:31:44,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8317 states. [2020-10-16 11:31:44,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8317 states to 8317 states and 38184 transitions. [2020-10-16 11:31:44,772 INFO L78 Accepts]: Start accepts. Automaton has 8317 states and 38184 transitions. Word has length 19 [2020-10-16 11:31:44,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:44,772 INFO L481 AbstractCegarLoop]: Abstraction has 8317 states and 38184 transitions. [2020-10-16 11:31:44,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:31:44,772 INFO L276 IsEmpty]: Start isEmpty. Operand 8317 states and 38184 transitions. [2020-10-16 11:31:44,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:31:44,773 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:44,773 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:44,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-16 11:31:44,774 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:31:44,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:44,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1389591796, now seen corresponding path program 1 times [2020-10-16 11:31:44,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:44,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454890054] [2020-10-16 11:31:44,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:44,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:44,855 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:31:44,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454890054] [2020-10-16 11:31:44,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617058038] [2020-10-16 11:31:44,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:31:44,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:44,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:31:44,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:31:45,057 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:31:45,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:31:45,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 11:31:45,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352676027] [2020-10-16 11:31:45,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 11:31:45,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:45,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 11:31:45,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 11:31:45,060 INFO L87 Difference]: Start difference. First operand 8317 states and 38184 transitions. Second operand 16 states. [2020-10-16 11:31:46,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:46,147 INFO L93 Difference]: Finished difference Result 26969 states and 101544 transitions. [2020-10-16 11:31:46,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:31:46,147 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-16 11:31:46,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:46,210 INFO L225 Difference]: With dead ends: 26969 [2020-10-16 11:31:46,210 INFO L226 Difference]: Without dead ends: 26957 [2020-10-16 11:31:46,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 11:31:46,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26957 states. [2020-10-16 11:31:46,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26957 to 8204. [2020-10-16 11:31:46,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8204 states. [2020-10-16 11:31:46,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8204 states to 8204 states and 37628 transitions. [2020-10-16 11:31:46,609 INFO L78 Accepts]: Start accepts. Automaton has 8204 states and 37628 transitions. Word has length 21 [2020-10-16 11:31:46,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:46,609 INFO L481 AbstractCegarLoop]: Abstraction has 8204 states and 37628 transitions. [2020-10-16 11:31:46,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 11:31:46,609 INFO L276 IsEmpty]: Start isEmpty. Operand 8204 states and 37628 transitions. [2020-10-16 11:31:46,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:31:46,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:46,610 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:46,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:31:46,818 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:31:46,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:46,818 INFO L82 PathProgramCache]: Analyzing trace with hash 184946636, now seen corresponding path program 2 times [2020-10-16 11:31:46,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:46,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126322646] [2020-10-16 11:31:46,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:46,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:46,885 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 11:31:46,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126322646] [2020-10-16 11:31:46,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575473522] [2020-10-16 11:31:46,886 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 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 11:31:46,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:31:46,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:31:46,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:31:46,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:31:47,052 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 11:31:47,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:31:47,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 11:31:47,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243998812] [2020-10-16 11:31:47,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 11:31:47,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:47,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 11:31:47,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 11:31:47,054 INFO L87 Difference]: Start difference. First operand 8204 states and 37628 transitions. Second operand 16 states. [2020-10-16 11:31:48,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:48,020 INFO L93 Difference]: Finished difference Result 26661 states and 100277 transitions. [2020-10-16 11:31:48,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:31:48,021 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-16 11:31:48,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:48,088 INFO L225 Difference]: With dead ends: 26661 [2020-10-16 11:31:48,088 INFO L226 Difference]: Without dead ends: 26645 [2020-10-16 11:31:48,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 11:31:48,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26645 states. [2020-10-16 11:31:48,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26645 to 8091. [2020-10-16 11:31:48,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8091 states. [2020-10-16 11:31:48,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8091 states to 8091 states and 37076 transitions. [2020-10-16 11:31:48,580 INFO L78 Accepts]: Start accepts. Automaton has 8091 states and 37076 transitions. Word has length 21 [2020-10-16 11:31:48,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:48,580 INFO L481 AbstractCegarLoop]: Abstraction has 8091 states and 37076 transitions. [2020-10-16 11:31:48,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 11:31:48,581 INFO L276 IsEmpty]: Start isEmpty. Operand 8091 states and 37076 transitions. [2020-10-16 11:31:48,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:31:48,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:48,582 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:48,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-10-16 11:31:48,783 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:31:48,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:48,783 INFO L82 PathProgramCache]: Analyzing trace with hash -231570740, now seen corresponding path program 3 times [2020-10-16 11:31:48,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:48,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879983039] [2020-10-16 11:31:48,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:48,847 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:31:48,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879983039] [2020-10-16 11:31:48,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309948208] [2020-10-16 11:31:48,847 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 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 11:31:48,928 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 11:31:48,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:31:48,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:31:48,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:31:49,046 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:31:49,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:31:49,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 11:31:49,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023454924] [2020-10-16 11:31:49,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 11:31:49,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:49,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 11:31:49,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 11:31:49,049 INFO L87 Difference]: Start difference. First operand 8091 states and 37076 transitions. Second operand 16 states. [2020-10-16 11:31:50,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:50,010 INFO L93 Difference]: Finished difference Result 26686 states and 100402 transitions. [2020-10-16 11:31:50,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:31:50,010 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-16 11:31:50,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:50,081 INFO L225 Difference]: With dead ends: 26686 [2020-10-16 11:31:50,081 INFO L226 Difference]: Without dead ends: 26674 [2020-10-16 11:31:50,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 11:31:50,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26674 states. [2020-10-16 11:31:50,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26674 to 7861. [2020-10-16 11:31:50,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7861 states. [2020-10-16 11:31:50,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7861 states to 7861 states and 36066 transitions. [2020-10-16 11:31:50,464 INFO L78 Accepts]: Start accepts. Automaton has 7861 states and 36066 transitions. Word has length 21 [2020-10-16 11:31:50,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:50,465 INFO L481 AbstractCegarLoop]: Abstraction has 7861 states and 36066 transitions. [2020-10-16 11:31:50,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 11:31:50,465 INFO L276 IsEmpty]: Start isEmpty. Operand 7861 states and 36066 transitions. [2020-10-16 11:31:50,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:31:50,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:50,466 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:50,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:31:50,667 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:31:50,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:50,667 INFO L82 PathProgramCache]: Analyzing trace with hash -168366002, now seen corresponding path program 4 times [2020-10-16 11:31:50,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:50,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618314844] [2020-10-16 11:31:50,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:50,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:50,871 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:31:50,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618314844] [2020-10-16 11:31:50,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702458826] [2020-10-16 11:31:50,871 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 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 11:31:50,938 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 11:31:50,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:31:50,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:31:50,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:31:51,033 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:31:51,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:31:51,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 11:31:51,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773168221] [2020-10-16 11:31:51,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 11:31:51,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:51,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 11:31:51,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 11:31:51,035 INFO L87 Difference]: Start difference. First operand 7861 states and 36066 transitions. Second operand 16 states. [2020-10-16 11:31:52,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:52,024 INFO L93 Difference]: Finished difference Result 26489 states and 99650 transitions. [2020-10-16 11:31:52,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:31:52,025 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-16 11:31:52,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:52,093 INFO L225 Difference]: With dead ends: 26489 [2020-10-16 11:31:52,094 INFO L226 Difference]: Without dead ends: 26473 [2020-10-16 11:31:52,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 11:31:52,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26473 states. [2020-10-16 11:31:52,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26473 to 7748. [2020-10-16 11:31:52,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7748 states. [2020-10-16 11:31:52,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7748 states to 7748 states and 35514 transitions. [2020-10-16 11:31:52,468 INFO L78 Accepts]: Start accepts. Automaton has 7748 states and 35514 transitions. Word has length 21 [2020-10-16 11:31:52,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:52,468 INFO L481 AbstractCegarLoop]: Abstraction has 7748 states and 35514 transitions. [2020-10-16 11:31:52,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 11:31:52,469 INFO L276 IsEmpty]: Start isEmpty. Operand 7748 states and 35514 transitions. [2020-10-16 11:31:52,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:31:52,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:52,470 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:52,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-10-16 11:31:52,671 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:31:52,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:52,671 INFO L82 PathProgramCache]: Analyzing trace with hash 210203517, now seen corresponding path program 1 times [2020-10-16 11:31:52,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:52,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104326080] [2020-10-16 11:31:52,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:52,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:52,722 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:31:52,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104326080] [2020-10-16 11:31:52,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:31:52,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:31:52,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254810022] [2020-10-16 11:31:52,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:31:52,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:52,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:31:52,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:31:52,724 INFO L87 Difference]: Start difference. First operand 7748 states and 35514 transitions. Second operand 5 states. [2020-10-16 11:31:52,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:52,888 INFO L93 Difference]: Finished difference Result 13251 states and 57501 transitions. [2020-10-16 11:31:52,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:31:52,889 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-16 11:31:52,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:52,934 INFO L225 Difference]: With dead ends: 13251 [2020-10-16 11:31:52,934 INFO L226 Difference]: Without dead ends: 13220 [2020-10-16 11:31:52,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:31:53,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13220 states. [2020-10-16 11:31:53,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13220 to 9255. [2020-10-16 11:31:53,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9255 states. [2020-10-16 11:31:53,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9255 states to 9255 states and 42368 transitions. [2020-10-16 11:31:53,202 INFO L78 Accepts]: Start accepts. Automaton has 9255 states and 42368 transitions. Word has length 21 [2020-10-16 11:31:53,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:53,202 INFO L481 AbstractCegarLoop]: Abstraction has 9255 states and 42368 transitions. [2020-10-16 11:31:53,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:31:53,202 INFO L276 IsEmpty]: Start isEmpty. Operand 9255 states and 42368 transitions. [2020-10-16 11:31:53,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:31:53,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:53,204 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:53,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-16 11:31:53,204 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:31:53,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:53,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1134578958, now seen corresponding path program 5 times [2020-10-16 11:31:53,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:53,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407368343] [2020-10-16 11:31:53,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:53,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:53,268 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:31:53,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407368343] [2020-10-16 11:31:53,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:31:53,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:31:53,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548175102] [2020-10-16 11:31:53,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:31:53,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:53,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:31:53,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:31:53,270 INFO L87 Difference]: Start difference. First operand 9255 states and 42368 transitions. Second operand 9 states. [2020-10-16 11:31:54,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:54,177 INFO L93 Difference]: Finished difference Result 29788 states and 113841 transitions. [2020-10-16 11:31:54,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:31:54,177 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 11:31:54,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:54,242 INFO L225 Difference]: With dead ends: 29788 [2020-10-16 11:31:54,242 INFO L226 Difference]: Without dead ends: 29770 [2020-10-16 11:31:54,242 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:31:54,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29770 states. [2020-10-16 11:31:54,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29770 to 8964. [2020-10-16 11:31:54,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8964 states. [2020-10-16 11:31:54,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8964 states to 8964 states and 41031 transitions. [2020-10-16 11:31:54,662 INFO L78 Accepts]: Start accepts. Automaton has 8964 states and 41031 transitions. Word has length 21 [2020-10-16 11:31:54,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:54,662 INFO L481 AbstractCegarLoop]: Abstraction has 8964 states and 41031 transitions. [2020-10-16 11:31:54,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:31:54,663 INFO L276 IsEmpty]: Start isEmpty. Operand 8964 states and 41031 transitions. [2020-10-16 11:31:54,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:31:54,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:54,664 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:54,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-16 11:31:54,665 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:31:54,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:54,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1114967118, now seen corresponding path program 6 times [2020-10-16 11:31:54,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:54,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992822070] [2020-10-16 11:31:54,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:54,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:54,736 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:31:54,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992822070] [2020-10-16 11:31:54,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:31:54,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:31:54,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655352907] [2020-10-16 11:31:54,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:31:54,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:54,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:31:54,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:31:54,738 INFO L87 Difference]: Start difference. First operand 8964 states and 41031 transitions. Second operand 9 states. [2020-10-16 11:31:55,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:55,621 INFO L93 Difference]: Finished difference Result 29379 states and 112099 transitions. [2020-10-16 11:31:55,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:31:55,622 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 11:31:55,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:55,704 INFO L225 Difference]: With dead ends: 29379 [2020-10-16 11:31:55,705 INFO L226 Difference]: Without dead ends: 29356 [2020-10-16 11:31:55,705 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:31:55,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29356 states. [2020-10-16 11:31:56,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29356 to 8573. [2020-10-16 11:31:56,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8573 states. [2020-10-16 11:31:56,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8573 states to 8573 states and 39353 transitions. [2020-10-16 11:31:56,150 INFO L78 Accepts]: Start accepts. Automaton has 8573 states and 39353 transitions. Word has length 21 [2020-10-16 11:31:56,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:56,150 INFO L481 AbstractCegarLoop]: Abstraction has 8573 states and 39353 transitions. [2020-10-16 11:31:56,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:31:56,150 INFO L276 IsEmpty]: Start isEmpty. Operand 8573 states and 39353 transitions. [2020-10-16 11:31:56,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 11:31:56,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:56,152 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:56,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-16 11:31:56,152 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:31:56,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:56,152 INFO L82 PathProgramCache]: Analyzing trace with hash 715669452, now seen corresponding path program 1 times [2020-10-16 11:31:56,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:56,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739060436] [2020-10-16 11:31:56,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:56,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:56,305 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2020-10-16 11:31:56,330 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 11:31:56,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739060436] [2020-10-16 11:31:56,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996469265] [2020-10-16 11:31:56,331 INFO L95 rtionOrderModulation]: Keeping assertion order 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 11:31:56,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:56,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 11:31:56,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:31:56,470 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 11:31:56,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:31:56,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 11:31:56,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407588466] [2020-10-16 11:31:56,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 11:31:56,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:56,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 11:31:56,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 11:31:56,472 INFO L87 Difference]: Start difference. First operand 8573 states and 39353 transitions. Second operand 12 states. [2020-10-16 11:31:56,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:56,866 INFO L93 Difference]: Finished difference Result 19727 states and 80274 transitions. [2020-10-16 11:31:56,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:31:56,866 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-16 11:31:56,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:56,913 INFO L225 Difference]: With dead ends: 19727 [2020-10-16 11:31:56,913 INFO L226 Difference]: Without dead ends: 19703 [2020-10-16 11:31:56,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-16 11:31:57,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19703 states. [2020-10-16 11:31:57,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19703 to 8847. [2020-10-16 11:31:57,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8847 states. [2020-10-16 11:31:57,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8847 states to 8847 states and 40495 transitions. [2020-10-16 11:31:57,239 INFO L78 Accepts]: Start accepts. Automaton has 8847 states and 40495 transitions. Word has length 23 [2020-10-16 11:31:57,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:57,239 INFO L481 AbstractCegarLoop]: Abstraction has 8847 states and 40495 transitions. [2020-10-16 11:31:57,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 11:31:57,239 INFO L276 IsEmpty]: Start isEmpty. Operand 8847 states and 40495 transitions. [2020-10-16 11:31:57,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 11:31:57,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:57,241 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:57,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-10-16 11:31:57,442 INFO L429 AbstractCegarLoop]: === Iteration 19 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:31:57,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:57,443 INFO L82 PathProgramCache]: Analyzing trace with hash 504272987, now seen corresponding path program 1 times [2020-10-16 11:31:57,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:57,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502482732] [2020-10-16 11:31:57,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:57,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:57,488 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 11:31:57,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502482732] [2020-10-16 11:31:57,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745518547] [2020-10-16 11:31:57,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:31:57,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:57,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 11:31:57,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:31:57,620 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 11:31:57,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:31:57,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 11:31:57,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620765816] [2020-10-16 11:31:57,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 11:31:57,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:57,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 11:31:57,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 11:31:57,622 INFO L87 Difference]: Start difference. First operand 8847 states and 40495 transitions. Second operand 12 states. [2020-10-16 11:31:57,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:57,996 INFO L93 Difference]: Finished difference Result 20694 states and 84261 transitions. [2020-10-16 11:31:57,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:31:57,997 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-16 11:31:57,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:58,043 INFO L225 Difference]: With dead ends: 20694 [2020-10-16 11:31:58,043 INFO L226 Difference]: Without dead ends: 20666 [2020-10-16 11:31:58,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-16 11:31:58,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20666 states. [2020-10-16 11:31:58,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20666 to 9115. [2020-10-16 11:31:58,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9115 states. [2020-10-16 11:31:58,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9115 states to 9115 states and 41679 transitions. [2020-10-16 11:31:58,370 INFO L78 Accepts]: Start accepts. Automaton has 9115 states and 41679 transitions. Word has length 23 [2020-10-16 11:31:58,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:58,370 INFO L481 AbstractCegarLoop]: Abstraction has 9115 states and 41679 transitions. [2020-10-16 11:31:58,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 11:31:58,370 INFO L276 IsEmpty]: Start isEmpty. Operand 9115 states and 41679 transitions. [2020-10-16 11:31:58,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 11:31:58,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:58,372 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:58,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:31:58,573 INFO L429 AbstractCegarLoop]: === Iteration 20 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:31:58,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:58,573 INFO L82 PathProgramCache]: Analyzing trace with hash 591685125, now seen corresponding path program 1 times [2020-10-16 11:31:58,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:58,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065441362] [2020-10-16 11:31:58,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:58,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:58,617 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 11:31:58,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065441362] [2020-10-16 11:31:58,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441937373] [2020-10-16 11:31:58,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:31:58,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:58,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 11:31:58,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:31:58,750 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 11:31:58,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:31:58,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 11:31:58,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361410643] [2020-10-16 11:31:58,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 11:31:58,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:58,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 11:31:58,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 11:31:58,752 INFO L87 Difference]: Start difference. First operand 9115 states and 41679 transitions. Second operand 12 states. [2020-10-16 11:31:59,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:59,180 INFO L93 Difference]: Finished difference Result 21396 states and 87360 transitions. [2020-10-16 11:31:59,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:31:59,180 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-16 11:31:59,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:59,235 INFO L225 Difference]: With dead ends: 21396 [2020-10-16 11:31:59,235 INFO L226 Difference]: Without dead ends: 21359 [2020-10-16 11:31:59,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-16 11:31:59,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21359 states. [2020-10-16 11:31:59,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21359 to 9320. [2020-10-16 11:31:59,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9320 states. [2020-10-16 11:31:59,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9320 states to 9320 states and 42648 transitions. [2020-10-16 11:31:59,704 INFO L78 Accepts]: Start accepts. Automaton has 9320 states and 42648 transitions. Word has length 23 [2020-10-16 11:31:59,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:59,704 INFO L481 AbstractCegarLoop]: Abstraction has 9320 states and 42648 transitions. [2020-10-16 11:31:59,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 11:31:59,704 INFO L276 IsEmpty]: Start isEmpty. Operand 9320 states and 42648 transitions. [2020-10-16 11:31:59,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 11:31:59,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:59,706 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:59,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2020-10-16 11:31:59,907 INFO L429 AbstractCegarLoop]: === Iteration 21 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:31:59,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:59,908 INFO L82 PathProgramCache]: Analyzing trace with hash 142124187, now seen corresponding path program 2 times [2020-10-16 11:31:59,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:59,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468667286] [2020-10-16 11:31:59,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:59,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:59,960 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:31:59,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468667286] [2020-10-16 11:31:59,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:31:59,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:31:59,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337259849] [2020-10-16 11:31:59,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:31:59,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:59,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:31:59,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:31:59,962 INFO L87 Difference]: Start difference. First operand 9320 states and 42648 transitions. Second operand 7 states. [2020-10-16 11:32:00,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:32:00,365 INFO L93 Difference]: Finished difference Result 21489 states and 87752 transitions. [2020-10-16 11:32:00,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:32:00,366 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-16 11:32:00,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:32:00,417 INFO L225 Difference]: With dead ends: 21489 [2020-10-16 11:32:00,418 INFO L226 Difference]: Without dead ends: 21452 [2020-10-16 11:32:00,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 11:32:00,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21452 states. [2020-10-16 11:32:00,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21452 to 9401. [2020-10-16 11:32:00,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9401 states. [2020-10-16 11:32:00,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9401 states to 9401 states and 43010 transitions. [2020-10-16 11:32:00,777 INFO L78 Accepts]: Start accepts. Automaton has 9401 states and 43010 transitions. Word has length 23 [2020-10-16 11:32:00,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:32:00,777 INFO L481 AbstractCegarLoop]: Abstraction has 9401 states and 43010 transitions. [2020-10-16 11:32:00,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:32:00,777 INFO L276 IsEmpty]: Start isEmpty. Operand 9401 states and 43010 transitions. [2020-10-16 11:32:00,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 11:32:00,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:32:00,779 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:32:00,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-16 11:32:00,779 INFO L429 AbstractCegarLoop]: === Iteration 22 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:32:00,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:32:00,780 INFO L82 PathProgramCache]: Analyzing trace with hash 142117429, now seen corresponding path program 2 times [2020-10-16 11:32:00,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:32:00,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730572321] [2020-10-16 11:32:00,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:32:00,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:32:00,827 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:32:00,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730572321] [2020-10-16 11:32:00,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:32:00,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:32:00,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859336819] [2020-10-16 11:32:00,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:32:00,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:32:00,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:32:00,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:32:00,829 INFO L87 Difference]: Start difference. First operand 9401 states and 43010 transitions. Second operand 7 states. [2020-10-16 11:32:01,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:32:01,226 INFO L93 Difference]: Finished difference Result 21198 states and 86437 transitions. [2020-10-16 11:32:01,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:32:01,227 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-16 11:32:01,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:32:01,276 INFO L225 Difference]: With dead ends: 21198 [2020-10-16 11:32:01,276 INFO L226 Difference]: Without dead ends: 21161 [2020-10-16 11:32:01,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 11:32:01,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21161 states. [2020-10-16 11:32:01,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21161 to 9396. [2020-10-16 11:32:01,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9396 states. [2020-10-16 11:32:01,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9396 states to 9396 states and 42985 transitions. [2020-10-16 11:32:01,633 INFO L78 Accepts]: Start accepts. Automaton has 9396 states and 42985 transitions. Word has length 23 [2020-10-16 11:32:01,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:32:01,633 INFO L481 AbstractCegarLoop]: Abstraction has 9396 states and 42985 transitions. [2020-10-16 11:32:01,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:32:01,633 INFO L276 IsEmpty]: Start isEmpty. Operand 9396 states and 42985 transitions. [2020-10-16 11:32:01,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 11:32:01,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:32:01,635 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:32:01,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-16 11:32:01,635 INFO L429 AbstractCegarLoop]: === Iteration 23 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:32:01,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:32:01,636 INFO L82 PathProgramCache]: Analyzing trace with hash 142103758, now seen corresponding path program 2 times [2020-10-16 11:32:01,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:32:01,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823845071] [2020-10-16 11:32:01,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:32:01,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:32:01,681 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:32:01,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823845071] [2020-10-16 11:32:01,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:32:01,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:32:01,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562192114] [2020-10-16 11:32:01,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:32:01,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:32:01,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:32:01,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:32:01,683 INFO L87 Difference]: Start difference. First operand 9396 states and 42985 transitions. Second operand 7 states. [2020-10-16 11:32:02,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:32:02,065 INFO L93 Difference]: Finished difference Result 21067 states and 85734 transitions. [2020-10-16 11:32:02,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:32:02,066 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-16 11:32:02,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:32:02,118 INFO L225 Difference]: With dead ends: 21067 [2020-10-16 11:32:02,118 INFO L226 Difference]: Without dead ends: 21030 [2020-10-16 11:32:02,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 11:32:02,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21030 states. [2020-10-16 11:32:02,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21030 to 9426. [2020-10-16 11:32:02,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9426 states. [2020-10-16 11:32:02,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9426 states to 9426 states and 43057 transitions. [2020-10-16 11:32:02,585 INFO L78 Accepts]: Start accepts. Automaton has 9426 states and 43057 transitions. Word has length 23 [2020-10-16 11:32:02,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:32:02,585 INFO L481 AbstractCegarLoop]: Abstraction has 9426 states and 43057 transitions. [2020-10-16 11:32:02,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:32:02,585 INFO L276 IsEmpty]: Start isEmpty. Operand 9426 states and 43057 transitions. [2020-10-16 11:32:02,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:32:02,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:32:02,588 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:32:02,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-16 11:32:02,588 INFO L429 AbstractCegarLoop]: === Iteration 24 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:32:02,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:32:02,588 INFO L82 PathProgramCache]: Analyzing trace with hash 925732074, now seen corresponding path program 1 times [2020-10-16 11:32:02,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:32:02,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162814455] [2020-10-16 11:32:02,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:32:02,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:32:02,654 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 11:32:02,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162814455] [2020-10-16 11:32:02,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882128439] [2020-10-16 11:32:02,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:32:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:32:02,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:32:02,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:32:02,870 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 11:32:02,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:32:02,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 11:32:02,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840403305] [2020-10-16 11:32:02,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 11:32:02,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:32:02,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 11:32:02,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 11:32:02,872 INFO L87 Difference]: Start difference. First operand 9426 states and 43057 transitions. Second operand 16 states. [2020-10-16 11:32:03,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:32:03,957 INFO L93 Difference]: Finished difference Result 30145 states and 115754 transitions. [2020-10-16 11:32:03,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:32:03,957 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-16 11:32:03,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:32:04,026 INFO L225 Difference]: With dead ends: 30145 [2020-10-16 11:32:04,026 INFO L226 Difference]: Without dead ends: 30125 [2020-10-16 11:32:04,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 11:32:04,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30125 states. [2020-10-16 11:32:04,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30125 to 9338. [2020-10-16 11:32:04,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9338 states. [2020-10-16 11:32:04,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9338 states to 9338 states and 42582 transitions. [2020-10-16 11:32:04,458 INFO L78 Accepts]: Start accepts. Automaton has 9338 states and 42582 transitions. Word has length 25 [2020-10-16 11:32:04,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:32:04,458 INFO L481 AbstractCegarLoop]: Abstraction has 9338 states and 42582 transitions. [2020-10-16 11:32:04,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 11:32:04,458 INFO L276 IsEmpty]: Start isEmpty. Operand 9338 states and 42582 transitions. [2020-10-16 11:32:04,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:32:04,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:32:04,461 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:32:04,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-10-16 11:32:04,662 INFO L429 AbstractCegarLoop]: === Iteration 25 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:32:04,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:32:04,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1013144212, now seen corresponding path program 1 times [2020-10-16 11:32:04,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:32:04,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484414821] [2020-10-16 11:32:04,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:32:04,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:32:04,724 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 11:32:04,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484414821] [2020-10-16 11:32:04,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755527540] [2020-10-16 11:32:04,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:32:04,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:32:04,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:32:04,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:32:04,893 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 11:32:04,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:32:04,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 11:32:04,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390352730] [2020-10-16 11:32:04,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 11:32:04,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:32:04,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 11:32:04,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 11:32:04,895 INFO L87 Difference]: Start difference. First operand 9338 states and 42582 transitions. Second operand 16 states. [2020-10-16 11:32:05,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:32:05,824 INFO L93 Difference]: Finished difference Result 29696 states and 113916 transitions. [2020-10-16 11:32:05,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:32:05,825 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-16 11:32:05,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:32:05,890 INFO L225 Difference]: With dead ends: 29696 [2020-10-16 11:32:05,890 INFO L226 Difference]: Without dead ends: 29676 [2020-10-16 11:32:05,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 11:32:06,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29676 states. [2020-10-16 11:32:06,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29676 to 9291. [2020-10-16 11:32:06,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9291 states. [2020-10-16 11:32:06,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9291 states to 9291 states and 42295 transitions. [2020-10-16 11:32:06,469 INFO L78 Accepts]: Start accepts. Automaton has 9291 states and 42295 transitions. Word has length 25 [2020-10-16 11:32:06,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:32:06,469 INFO L481 AbstractCegarLoop]: Abstraction has 9291 states and 42295 transitions. [2020-10-16 11:32:06,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 11:32:06,469 INFO L276 IsEmpty]: Start isEmpty. Operand 9291 states and 42295 transitions. [2020-10-16 11:32:06,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:32:06,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:32:06,472 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:32:06,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-10-16 11:32:06,673 INFO L429 AbstractCegarLoop]: === Iteration 26 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:32:06,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:32:06,674 INFO L82 PathProgramCache]: Analyzing trace with hash 563583274, now seen corresponding path program 2 times [2020-10-16 11:32:06,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:32:06,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100875826] [2020-10-16 11:32:06,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:32:06,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:32:06,740 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 11:32:06,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100875826] [2020-10-16 11:32:06,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126912735] [2020-10-16 11:32:06,740 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 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 11:32:06,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:32:06,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:32:06,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:32:06,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:32:06,916 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 11:32:06,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:32:06,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 11:32:06,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628576625] [2020-10-16 11:32:06,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 11:32:06,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:32:06,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 11:32:06,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 11:32:06,918 INFO L87 Difference]: Start difference. First operand 9291 states and 42295 transitions. Second operand 16 states. [2020-10-16 11:32:07,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:32:07,888 INFO L93 Difference]: Finished difference Result 29267 states and 112142 transitions. [2020-10-16 11:32:07,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:32:07,888 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-16 11:32:07,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:32:07,954 INFO L225 Difference]: With dead ends: 29267 [2020-10-16 11:32:07,954 INFO L226 Difference]: Without dead ends: 29245 [2020-10-16 11:32:07,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 11:32:08,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29245 states. [2020-10-16 11:32:08,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29245 to 9288. [2020-10-16 11:32:08,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9288 states. [2020-10-16 11:32:08,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9288 states to 9288 states and 42242 transitions. [2020-10-16 11:32:08,374 INFO L78 Accepts]: Start accepts. Automaton has 9288 states and 42242 transitions. Word has length 25 [2020-10-16 11:32:08,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:32:08,375 INFO L481 AbstractCegarLoop]: Abstraction has 9288 states and 42242 transitions. [2020-10-16 11:32:08,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 11:32:08,375 INFO L276 IsEmpty]: Start isEmpty. Operand 9288 states and 42242 transitions. [2020-10-16 11:32:08,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:32:08,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:32:08,378 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:32:08,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-10-16 11:32:08,579 INFO L429 AbstractCegarLoop]: === Iteration 27 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:32:08,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:32:08,580 INFO L82 PathProgramCache]: Analyzing trace with hash 563576516, now seen corresponding path program 2 times [2020-10-16 11:32:08,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:32:08,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95507580] [2020-10-16 11:32:08,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:32:08,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:32:08,645 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 11:32:08,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95507580] [2020-10-16 11:32:08,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726859035] [2020-10-16 11:32:08,646 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 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 11:32:08,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:32:08,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:32:08,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:32:08,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:32:08,821 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 11:32:08,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:32:08,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 11:32:08,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998016694] [2020-10-16 11:32:08,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 11:32:08,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:32:08,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 11:32:08,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 11:32:08,822 INFO L87 Difference]: Start difference. First operand 9288 states and 42242 transitions. Second operand 16 states. [2020-10-16 11:32:09,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:32:09,955 INFO L93 Difference]: Finished difference Result 28920 states and 110796 transitions. [2020-10-16 11:32:09,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:32:09,956 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-16 11:32:09,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:32:10,023 INFO L225 Difference]: With dead ends: 28920 [2020-10-16 11:32:10,023 INFO L226 Difference]: Without dead ends: 28898 [2020-10-16 11:32:10,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 11:32:10,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28898 states. [2020-10-16 11:32:10,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28898 to 9176. [2020-10-16 11:32:10,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9176 states. [2020-10-16 11:32:10,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9176 states to 9176 states and 41695 transitions. [2020-10-16 11:32:10,630 INFO L78 Accepts]: Start accepts. Automaton has 9176 states and 41695 transitions. Word has length 25 [2020-10-16 11:32:10,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:32:10,631 INFO L481 AbstractCegarLoop]: Abstraction has 9176 states and 41695 transitions. [2020-10-16 11:32:10,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 11:32:10,631 INFO L276 IsEmpty]: Start isEmpty. Operand 9176 states and 41695 transitions. [2020-10-16 11:32:10,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:32:10,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:32:10,634 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:32:10,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:32:10,835 INFO L429 AbstractCegarLoop]: === Iteration 28 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:32:10,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:32:10,836 INFO L82 PathProgramCache]: Analyzing trace with hash -2052215638, now seen corresponding path program 3 times [2020-10-16 11:32:10,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:32:10,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950706435] [2020-10-16 11:32:10,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:32:10,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:32:10,904 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-16 11:32:10,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950706435] [2020-10-16 11:32:10,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221658646] [2020-10-16 11:32:10,905 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 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 11:32:10,984 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-16 11:32:10,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:32:10,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:32:10,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:32:11,095 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-16 11:32:11,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:32:11,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 11:32:11,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054171392] [2020-10-16 11:32:11,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 11:32:11,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:32:11,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 11:32:11,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 11:32:11,096 INFO L87 Difference]: Start difference. First operand 9176 states and 41695 transitions. Second operand 16 states. [2020-10-16 11:32:12,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:32:12,072 INFO L93 Difference]: Finished difference Result 29038 states and 111216 transitions. [2020-10-16 11:32:12,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:32:12,072 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-16 11:32:12,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:32:12,145 INFO L225 Difference]: With dead ends: 29038 [2020-10-16 11:32:12,145 INFO L226 Difference]: Without dead ends: 29018 [2020-10-16 11:32:12,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 11:32:12,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29018 states. [2020-10-16 11:32:12,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29018 to 9000. [2020-10-16 11:32:12,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9000 states. [2020-10-16 11:32:12,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9000 states to 9000 states and 40897 transitions. [2020-10-16 11:32:12,568 INFO L78 Accepts]: Start accepts. Automaton has 9000 states and 40897 transitions. Word has length 25 [2020-10-16 11:32:12,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:32:12,569 INFO L481 AbstractCegarLoop]: Abstraction has 9000 states and 40897 transitions. [2020-10-16 11:32:12,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 11:32:12,569 INFO L276 IsEmpty]: Start isEmpty. Operand 9000 states and 40897 transitions. [2020-10-16 11:32:12,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:32:12,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:32:12,572 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:32:12,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-10-16 11:32:12,773 INFO L429 AbstractCegarLoop]: === Iteration 29 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:32:12,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:32:12,773 INFO L82 PathProgramCache]: Analyzing trace with hash -275395741, now seen corresponding path program 1 times [2020-10-16 11:32:12,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:32:12,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88909624] [2020-10-16 11:32:12,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:32:12,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:32:12,838 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 11:32:12,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88909624] [2020-10-16 11:32:12,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931723303] [2020-10-16 11:32:12,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:32:12,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:32:12,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:32:12,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:32:13,012 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 11:32:13,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:32:13,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 11:32:13,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56961334] [2020-10-16 11:32:13,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 11:32:13,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:32:13,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 11:32:13,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 11:32:13,013 INFO L87 Difference]: Start difference. First operand 9000 states and 40897 transitions. Second operand 16 states. [2020-10-16 11:32:14,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:32:14,145 INFO L93 Difference]: Finished difference Result 29417 states and 113034 transitions. [2020-10-16 11:32:14,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:32:14,145 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-16 11:32:14,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:32:14,219 INFO L225 Difference]: With dead ends: 29417 [2020-10-16 11:32:14,219 INFO L226 Difference]: Without dead ends: 29397 [2020-10-16 11:32:14,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 11:32:14,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29397 states. [2020-10-16 11:32:14,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29397 to 8990. [2020-10-16 11:32:14,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8990 states. [2020-10-16 11:32:14,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8990 states to 8990 states and 40786 transitions. [2020-10-16 11:32:14,647 INFO L78 Accepts]: Start accepts. Automaton has 8990 states and 40786 transitions. Word has length 25 [2020-10-16 11:32:14,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:32:14,647 INFO L481 AbstractCegarLoop]: Abstraction has 8990 states and 40786 transitions. [2020-10-16 11:32:14,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 11:32:14,648 INFO L276 IsEmpty]: Start isEmpty. Operand 8990 states and 40786 transitions. [2020-10-16 11:32:14,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:32:14,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:32:14,651 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:32:14,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:32:14,852 INFO L429 AbstractCegarLoop]: === Iteration 30 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:32:14,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:32:14,852 INFO L82 PathProgramCache]: Analyzing trace with hash -724963437, now seen corresponding path program 2 times [2020-10-16 11:32:14,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:32:14,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341484387] [2020-10-16 11:32:14,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:32:14,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:32:14,915 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 11:32:14,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341484387] [2020-10-16 11:32:14,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354381959] [2020-10-16 11:32:14,915 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 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 11:32:15,003 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:32:15,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:32:15,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:32:15,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:32:15,131 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 11:32:15,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:32:15,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 11:32:15,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956047814] [2020-10-16 11:32:15,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 11:32:15,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:32:15,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 11:32:15,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 11:32:15,132 INFO L87 Difference]: Start difference. First operand 8990 states and 40786 transitions. Second operand 16 states. [2020-10-16 11:32:16,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:32:16,194 INFO L93 Difference]: Finished difference Result 29064 states and 111552 transitions. [2020-10-16 11:32:16,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:32:16,194 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-16 11:32:16,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:32:16,265 INFO L225 Difference]: With dead ends: 29064 [2020-10-16 11:32:16,266 INFO L226 Difference]: Without dead ends: 29037 [2020-10-16 11:32:16,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 11:32:16,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29037 states. [2020-10-16 11:32:16,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29037 to 8953. [2020-10-16 11:32:16,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8953 states. [2020-10-16 11:32:16,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8953 states to 8953 states and 40609 transitions. [2020-10-16 11:32:16,703 INFO L78 Accepts]: Start accepts. Automaton has 8953 states and 40609 transitions. Word has length 25 [2020-10-16 11:32:16,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:32:16,703 INFO L481 AbstractCegarLoop]: Abstraction has 8953 states and 40609 transitions. [2020-10-16 11:32:16,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 11:32:16,703 INFO L276 IsEmpty]: Start isEmpty. Operand 8953 states and 40609 transitions. [2020-10-16 11:32:16,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:32:16,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:32:16,707 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:32:16,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2020-10-16 11:32:16,908 INFO L429 AbstractCegarLoop]: === Iteration 31 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:32:16,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:32:16,909 INFO L82 PathProgramCache]: Analyzing trace with hash -724977108, now seen corresponding path program 4 times [2020-10-16 11:32:16,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:32:16,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259351873] [2020-10-16 11:32:16,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:32:16,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:32:16,967 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 11:32:16,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259351873] [2020-10-16 11:32:16,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582071821] [2020-10-16 11:32:16,968 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 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 11:32:17,038 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 11:32:17,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:32:17,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:32:17,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:32:17,153 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 11:32:17,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:32:17,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 11:32:17,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417520310] [2020-10-16 11:32:17,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 11:32:17,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:32:17,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 11:32:17,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 11:32:17,154 INFO L87 Difference]: Start difference. First operand 8953 states and 40609 transitions. Second operand 16 states. [2020-10-16 11:32:18,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:32:18,100 INFO L93 Difference]: Finished difference Result 28523 states and 109227 transitions. [2020-10-16 11:32:18,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:32:18,101 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-16 11:32:18,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:32:18,165 INFO L225 Difference]: With dead ends: 28523 [2020-10-16 11:32:18,166 INFO L226 Difference]: Without dead ends: 28501 [2020-10-16 11:32:18,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 11:32:18,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28501 states. [2020-10-16 11:32:18,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28501 to 8841. [2020-10-16 11:32:18,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8841 states. [2020-10-16 11:32:18,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8841 states to 8841 states and 40062 transitions. [2020-10-16 11:32:18,572 INFO L78 Accepts]: Start accepts. Automaton has 8841 states and 40062 transitions. Word has length 25 [2020-10-16 11:32:18,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:32:18,572 INFO L481 AbstractCegarLoop]: Abstraction has 8841 states and 40062 transitions. [2020-10-16 11:32:18,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 11:32:18,573 INFO L276 IsEmpty]: Start isEmpty. Operand 8841 states and 40062 transitions. [2020-10-16 11:32:18,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:32:18,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:32:18,577 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:32:18,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:32:18,778 INFO L429 AbstractCegarLoop]: === Iteration 32 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:32:18,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:32:18,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1969402905, now seen corresponding path program 3 times [2020-10-16 11:32:18,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:32:18,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329518702] [2020-10-16 11:32:18,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:32:18,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:32:18,843 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 11:32:18,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329518702] [2020-10-16 11:32:18,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576392296] [2020-10-16 11:32:18,843 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 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 11:32:18,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 11:32:18,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:32:18,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:32:18,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:32:19,096 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 11:32:19,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:32:19,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 11:32:19,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088285733] [2020-10-16 11:32:19,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 11:32:19,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:32:19,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 11:32:19,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 11:32:19,099 INFO L87 Difference]: Start difference. First operand 8841 states and 40062 transitions. Second operand 16 states. [2020-10-16 11:32:20,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:32:20,254 INFO L93 Difference]: Finished difference Result 28636 states and 109852 transitions. [2020-10-16 11:32:20,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:32:20,255 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-16 11:32:20,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:32:20,349 INFO L225 Difference]: With dead ends: 28636 [2020-10-16 11:32:20,349 INFO L226 Difference]: Without dead ends: 28616 [2020-10-16 11:32:20,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 11:32:20,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28616 states. [2020-10-16 11:32:21,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28616 to 8702. [2020-10-16 11:32:21,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8702 states. [2020-10-16 11:32:21,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8702 states to 8702 states and 39438 transitions. [2020-10-16 11:32:21,357 INFO L78 Accepts]: Start accepts. Automaton has 8702 states and 39438 transitions. Word has length 25 [2020-10-16 11:32:21,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:32:21,357 INFO L481 AbstractCegarLoop]: Abstraction has 8702 states and 39438 transitions. [2020-10-16 11:32:21,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 11:32:21,357 INFO L276 IsEmpty]: Start isEmpty. Operand 8702 states and 39438 transitions. [2020-10-16 11:32:21,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:32:21,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:32:21,360 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:32:21,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2020-10-16 11:32:21,566 INFO L429 AbstractCegarLoop]: === Iteration 33 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:32:21,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:32:21,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1576190868, now seen corresponding path program 3 times [2020-10-16 11:32:21,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:32:21,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976693132] [2020-10-16 11:32:21,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:32:21,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:32:21,631 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 11:32:21,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976693132] [2020-10-16 11:32:21,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623095269] [2020-10-16 11:32:21,632 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 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 11:32:21,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 11:32:21,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:32:21,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:32:21,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:32:21,824 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 11:32:21,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:32:21,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 11:32:21,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806409225] [2020-10-16 11:32:21,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 11:32:21,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:32:21,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 11:32:21,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 11:32:21,825 INFO L87 Difference]: Start difference. First operand 8702 states and 39438 transitions. Second operand 16 states. [2020-10-16 11:32:22,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:32:22,729 INFO L93 Difference]: Finished difference Result 28297 states and 108461 transitions. [2020-10-16 11:32:22,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:32:22,729 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-16 11:32:22,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:32:22,793 INFO L225 Difference]: With dead ends: 28297 [2020-10-16 11:32:22,793 INFO L226 Difference]: Without dead ends: 28277 [2020-10-16 11:32:22,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 11:32:22,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28277 states. [2020-10-16 11:32:23,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28277 to 8596. [2020-10-16 11:32:23,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8596 states. [2020-10-16 11:32:23,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 38978 transitions. [2020-10-16 11:32:23,180 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 38978 transitions. Word has length 25 [2020-10-16 11:32:23,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:32:23,180 INFO L481 AbstractCegarLoop]: Abstraction has 8596 states and 38978 transitions. [2020-10-16 11:32:23,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 11:32:23,180 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 38978 transitions. [2020-10-16 11:32:23,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:32:23,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:32:23,183 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:32:23,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:32:23,397 INFO L429 AbstractCegarLoop]: === Iteration 34 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:32:23,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:32:23,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1673729315, now seen corresponding path program 4 times [2020-10-16 11:32:23,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:32:23,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164052025] [2020-10-16 11:32:23,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:32:23,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:32:23,455 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 11:32:23,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164052025] [2020-10-16 11:32:23,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416576987] [2020-10-16 11:32:23,455 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 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 11:32:23,529 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 11:32:23,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:32:23,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:32:23,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:32:23,637 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 11:32:23,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:32:23,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 11:32:23,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635653282] [2020-10-16 11:32:23,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 11:32:23,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:32:23,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 11:32:23,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 11:32:23,639 INFO L87 Difference]: Start difference. First operand 8596 states and 38978 transitions. Second operand 16 states. [2020-10-16 11:32:24,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:32:24,765 INFO L93 Difference]: Finished difference Result 28565 states and 109596 transitions. [2020-10-16 11:32:24,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:32:24,766 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-16 11:32:24,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:32:24,830 INFO L225 Difference]: With dead ends: 28565 [2020-10-16 11:32:24,831 INFO L226 Difference]: Without dead ends: 28538 [2020-10-16 11:32:24,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 11:32:24,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28538 states. [2020-10-16 11:32:25,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28538 to 8563. [2020-10-16 11:32:25,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8563 states. [2020-10-16 11:32:25,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8563 states to 8563 states and 38809 transitions. [2020-10-16 11:32:25,232 INFO L78 Accepts]: Start accepts. Automaton has 8563 states and 38809 transitions. Word has length 25 [2020-10-16 11:32:25,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:32:25,232 INFO L481 AbstractCegarLoop]: Abstraction has 8563 states and 38809 transitions. [2020-10-16 11:32:25,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 11:32:25,233 INFO L276 IsEmpty]: Start isEmpty. Operand 8563 states and 38809 transitions. [2020-10-16 11:32:25,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:32:25,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:32:25,236 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:32:25,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2020-10-16 11:32:25,437 INFO L429 AbstractCegarLoop]: === Iteration 35 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:32:25,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:32:25,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1673708886, now seen corresponding path program 4 times [2020-10-16 11:32:25,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:32:25,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351485871] [2020-10-16 11:32:25,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:32:25,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:32:25,510 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 11:32:25,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351485871] [2020-10-16 11:32:25,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804741559] [2020-10-16 11:32:25,510 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 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 11:32:25,587 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 11:32:25,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:32:25,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:32:25,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:32:25,690 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 11:32:25,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:32:25,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 11:32:25,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819730047] [2020-10-16 11:32:25,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 11:32:25,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:32:25,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 11:32:25,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 11:32:25,691 INFO L87 Difference]: Start difference. First operand 8563 states and 38809 transitions. Second operand 16 states. [2020-10-16 11:32:26,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:32:26,951 INFO L93 Difference]: Finished difference Result 28213 states and 108237 transitions. [2020-10-16 11:32:26,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:32:26,952 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-16 11:32:26,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:32:27,018 INFO L225 Difference]: With dead ends: 28213 [2020-10-16 11:32:27,019 INFO L226 Difference]: Without dead ends: 28186 [2020-10-16 11:32:27,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 11:32:27,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28186 states. [2020-10-16 11:32:27,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28186 to 8421. [2020-10-16 11:32:27,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8421 states. [2020-10-16 11:32:27,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8421 states to 8421 states and 38146 transitions. [2020-10-16 11:32:27,426 INFO L78 Accepts]: Start accepts. Automaton has 8421 states and 38146 transitions. Word has length 25 [2020-10-16 11:32:27,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:32:27,426 INFO L481 AbstractCegarLoop]: Abstraction has 8421 states and 38146 transitions. [2020-10-16 11:32:27,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 11:32:27,426 INFO L276 IsEmpty]: Start isEmpty. Operand 8421 states and 38146 transitions. [2020-10-16 11:32:27,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:32:27,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:32:27,429 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:32:27,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:32:27,630 INFO L429 AbstractCegarLoop]: === Iteration 36 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:32:27,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:32:27,631 INFO L82 PathProgramCache]: Analyzing trace with hash -857609261, now seen corresponding path program 5 times [2020-10-16 11:32:27,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:32:27,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351248674] [2020-10-16 11:32:27,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:32:27,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:32:27,698 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:32:27,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351248674] [2020-10-16 11:32:27,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:32:27,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:32:27,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021093261] [2020-10-16 11:32:27,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:32:27,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:32:27,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:32:27,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:32:27,699 INFO L87 Difference]: Start difference. First operand 8421 states and 38146 transitions. Second operand 9 states. [2020-10-16 11:32:28,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:32:28,641 INFO L93 Difference]: Finished difference Result 28226 states and 108274 transitions. [2020-10-16 11:32:28,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:32:28,642 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 11:32:28,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:32:28,705 INFO L225 Difference]: With dead ends: 28226 [2020-10-16 11:32:28,705 INFO L226 Difference]: Without dead ends: 28206 [2020-10-16 11:32:28,705 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:32:28,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28206 states. [2020-10-16 11:32:29,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28206 to 8277. [2020-10-16 11:32:29,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8277 states. [2020-10-16 11:32:29,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8277 states to 8277 states and 37487 transitions. [2020-10-16 11:32:29,113 INFO L78 Accepts]: Start accepts. Automaton has 8277 states and 37487 transitions. Word has length 25 [2020-10-16 11:32:29,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:32:29,113 INFO L481 AbstractCegarLoop]: Abstraction has 8277 states and 37487 transitions. [2020-10-16 11:32:29,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:32:29,113 INFO L276 IsEmpty]: Start isEmpty. Operand 8277 states and 37487 transitions. [2020-10-16 11:32:29,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:32:29,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:32:29,117 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:32:29,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-16 11:32:29,117 INFO L429 AbstractCegarLoop]: === Iteration 37 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:32:29,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:32:29,118 INFO L82 PathProgramCache]: Analyzing trace with hash -857622932, now seen corresponding path program 5 times [2020-10-16 11:32:29,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:32:29,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402766742] [2020-10-16 11:32:29,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:32:29,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:32:29,189 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:32:29,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402766742] [2020-10-16 11:32:29,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:32:29,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:32:29,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364454636] [2020-10-16 11:32:29,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:32:29,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:32:29,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:32:29,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:32:29,191 INFO L87 Difference]: Start difference. First operand 8277 states and 37487 transitions. Second operand 9 states. [2020-10-16 11:32:30,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:32:30,099 INFO L93 Difference]: Finished difference Result 27801 states and 106552 transitions. [2020-10-16 11:32:30,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:32:30,099 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 11:32:30,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:32:30,161 INFO L225 Difference]: With dead ends: 27801 [2020-10-16 11:32:30,161 INFO L226 Difference]: Without dead ends: 27781 [2020-10-16 11:32:30,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:32:30,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27781 states. [2020-10-16 11:32:30,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27781 to 8127. [2020-10-16 11:32:30,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8127 states. [2020-10-16 11:32:30,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8127 states to 8127 states and 36806 transitions. [2020-10-16 11:32:30,550 INFO L78 Accepts]: Start accepts. Automaton has 8127 states and 36806 transitions. Word has length 25 [2020-10-16 11:32:30,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:32:30,550 INFO L481 AbstractCegarLoop]: Abstraction has 8127 states and 36806 transitions. [2020-10-16 11:32:30,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:32:30,550 INFO L276 IsEmpty]: Start isEmpty. Operand 8127 states and 36806 transitions. [2020-10-16 11:32:30,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:32:30,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:32:30,553 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:32:30,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-16 11:32:30,553 INFO L429 AbstractCegarLoop]: === Iteration 38 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:32:30,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:32:30,553 INFO L82 PathProgramCache]: Analyzing trace with hash -864096941, now seen corresponding path program 6 times [2020-10-16 11:32:30,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:32:30,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165644658] [2020-10-16 11:32:30,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:32:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:32:30,620 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:32:30,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165644658] [2020-10-16 11:32:30,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:32:30,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:32:30,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908044032] [2020-10-16 11:32:30,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:32:30,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:32:30,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:32:30,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:32:30,622 INFO L87 Difference]: Start difference. First operand 8127 states and 36806 transitions. Second operand 9 states. [2020-10-16 11:32:31,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:32:31,562 INFO L93 Difference]: Finished difference Result 27548 states and 105447 transitions. [2020-10-16 11:32:31,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:32:31,563 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 11:32:31,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:32:31,624 INFO L225 Difference]: With dead ends: 27548 [2020-10-16 11:32:31,624 INFO L226 Difference]: Without dead ends: 27521 [2020-10-16 11:32:31,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:32:31,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27521 states. [2020-10-16 11:32:32,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27521 to 7841. [2020-10-16 11:32:32,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7841 states. [2020-10-16 11:32:32,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7841 states to 7841 states and 35578 transitions. [2020-10-16 11:32:32,145 INFO L78 Accepts]: Start accepts. Automaton has 7841 states and 35578 transitions. Word has length 25 [2020-10-16 11:32:32,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:32:32,146 INFO L481 AbstractCegarLoop]: Abstraction has 7841 states and 35578 transitions. [2020-10-16 11:32:32,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:32:32,146 INFO L276 IsEmpty]: Start isEmpty. Operand 7841 states and 35578 transitions. [2020-10-16 11:32:32,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:32:32,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:32:32,149 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:32:32,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-16 11:32:32,149 INFO L429 AbstractCegarLoop]: === Iteration 39 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:32:32,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:32:32,150 INFO L82 PathProgramCache]: Analyzing trace with hash -864117370, now seen corresponding path program 5 times [2020-10-16 11:32:32,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:32:32,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93493635] [2020-10-16 11:32:32,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:32:32,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:32:32,215 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:32:32,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93493635] [2020-10-16 11:32:32,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:32:32,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:32:32,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545856445] [2020-10-16 11:32:32,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:32:32,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:32:32,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:32:32,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:32:32,217 INFO L87 Difference]: Start difference. First operand 7841 states and 35578 transitions. Second operand 9 states. [2020-10-16 11:32:33,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:32:33,115 INFO L93 Difference]: Finished difference Result 27167 states and 103966 transitions. [2020-10-16 11:32:33,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:32:33,116 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 11:32:33,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:32:33,177 INFO L225 Difference]: With dead ends: 27167 [2020-10-16 11:32:33,177 INFO L226 Difference]: Without dead ends: 27147 [2020-10-16 11:32:33,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:32:33,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27147 states. [2020-10-16 11:32:33,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27147 to 7743. [2020-10-16 11:32:33,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7743 states. [2020-10-16 11:32:33,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7743 states to 7743 states and 35142 transitions. [2020-10-16 11:32:33,551 INFO L78 Accepts]: Start accepts. Automaton has 7743 states and 35142 transitions. Word has length 25 [2020-10-16 11:32:33,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:32:33,552 INFO L481 AbstractCegarLoop]: Abstraction has 7743 states and 35142 transitions. [2020-10-16 11:32:33,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:32:33,552 INFO L276 IsEmpty]: Start isEmpty. Operand 7743 states and 35142 transitions. [2020-10-16 11:32:33,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:32:33,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:32:33,554 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:32:33,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-16 11:32:33,555 INFO L429 AbstractCegarLoop]: === Iteration 40 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:32:33,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:32:33,555 INFO L82 PathProgramCache]: Analyzing trace with hash -877234772, now seen corresponding path program 6 times [2020-10-16 11:32:33,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:32:33,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408428239] [2020-10-16 11:32:33,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:32:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:32:33,616 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:32:33,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408428239] [2020-10-16 11:32:33,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:32:33,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:32:33,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637980048] [2020-10-16 11:32:33,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:32:33,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:32:33,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:32:33,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:32:33,618 INFO L87 Difference]: Start difference. First operand 7743 states and 35142 transitions. Second operand 9 states. [2020-10-16 11:32:34,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:32:34,559 INFO L93 Difference]: Finished difference Result 26955 states and 103085 transitions. [2020-10-16 11:32:34,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:32:34,559 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 11:32:34,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:32:34,620 INFO L225 Difference]: With dead ends: 26955 [2020-10-16 11:32:34,620 INFO L226 Difference]: Without dead ends: 26928 [2020-10-16 11:32:34,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:32:34,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26928 states. [2020-10-16 11:32:34,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26928 to 7532. [2020-10-16 11:32:34,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7532 states. [2020-10-16 11:32:34,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7532 states to 7532 states and 34256 transitions. [2020-10-16 11:32:34,989 INFO L78 Accepts]: Start accepts. Automaton has 7532 states and 34256 transitions. Word has length 25 [2020-10-16 11:32:34,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:32:34,989 INFO L481 AbstractCegarLoop]: Abstraction has 7532 states and 34256 transitions. [2020-10-16 11:32:34,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:32:34,989 INFO L276 IsEmpty]: Start isEmpty. Operand 7532 states and 34256 transitions. [2020-10-16 11:32:34,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:32:34,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:32:34,992 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:32:34,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-10-16 11:32:34,993 INFO L429 AbstractCegarLoop]: === Iteration 41 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:32:34,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:32:34,993 INFO L82 PathProgramCache]: Analyzing trace with hash -877241530, now seen corresponding path program 6 times [2020-10-16 11:32:34,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:32:34,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941802646] [2020-10-16 11:32:34,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:32:34,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:32:35,067 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:32:35,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941802646] [2020-10-16 11:32:35,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:32:35,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:32:35,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006857089] [2020-10-16 11:32:35,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:32:35,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:32:35,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:32:35,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:32:35,069 INFO L87 Difference]: Start difference. First operand 7532 states and 34256 transitions. Second operand 9 states. [2020-10-16 11:32:36,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:32:36,100 INFO L93 Difference]: Finished difference Result 26632 states and 101828 transitions. [2020-10-16 11:32:36,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:32:36,100 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 11:32:36,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:32:36,158 INFO L225 Difference]: With dead ends: 26632 [2020-10-16 11:32:36,159 INFO L226 Difference]: Without dead ends: 26605 [2020-10-16 11:32:36,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:32:36,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26605 states. [2020-10-16 11:32:36,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26605 to 7269. [2020-10-16 11:32:36,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7269 states. [2020-10-16 11:32:36,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7269 states to 7269 states and 33154 transitions. [2020-10-16 11:32:36,515 INFO L78 Accepts]: Start accepts. Automaton has 7269 states and 33154 transitions. Word has length 25 [2020-10-16 11:32:36,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:32:36,515 INFO L481 AbstractCegarLoop]: Abstraction has 7269 states and 33154 transitions. [2020-10-16 11:32:36,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:32:36,515 INFO L276 IsEmpty]: Start isEmpty. Operand 7269 states and 33154 transitions. [2020-10-16 11:32:36,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:32:36,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:32:36,518 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:32:36,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-10-16 11:32:36,518 INFO L429 AbstractCegarLoop]: === Iteration 42 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:32:36,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:32:36,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1311164244, now seen corresponding path program 1 times [2020-10-16 11:32:36,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:32:36,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198440016] [2020-10-16 11:32:36,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:32:36,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:32:36,548 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-16 11:32:36,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198440016] [2020-10-16 11:32:36,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:32:36,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:32:36,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673641801] [2020-10-16 11:32:36,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:32:36,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:32:36,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:32:36,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:32:36,549 INFO L87 Difference]: Start difference. First operand 7269 states and 33154 transitions. Second operand 5 states. [2020-10-16 11:32:36,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:32:36,700 INFO L93 Difference]: Finished difference Result 11919 states and 51979 transitions. [2020-10-16 11:32:36,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:32:36,701 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-16 11:32:36,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:32:36,727 INFO L225 Difference]: With dead ends: 11919 [2020-10-16 11:32:36,728 INFO L226 Difference]: Without dead ends: 11887 [2020-10-16 11:32:36,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:32:36,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11887 states. [2020-10-16 11:32:36,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11887 to 8560. [2020-10-16 11:32:36,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8560 states. [2020-10-16 11:32:36,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8560 states to 8560 states and 38495 transitions. [2020-10-16 11:32:36,974 INFO L78 Accepts]: Start accepts. Automaton has 8560 states and 38495 transitions. Word has length 25 [2020-10-16 11:32:36,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:32:36,974 INFO L481 AbstractCegarLoop]: Abstraction has 8560 states and 38495 transitions. [2020-10-16 11:32:36,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:32:36,974 INFO L276 IsEmpty]: Start isEmpty. Operand 8560 states and 38495 transitions. [2020-10-16 11:32:36,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-16 11:32:36,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:32:36,978 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:32:36,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-10-16 11:32:36,979 INFO L429 AbstractCegarLoop]: === Iteration 43 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:32:36,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:32:36,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1986416772, now seen corresponding path program 1 times [2020-10-16 11:32:36,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:32:36,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992553402] [2020-10-16 11:32:36,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:32:36,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:32:36,986 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:32:36,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:32:36,992 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:32:36,999 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 11:32:36,999 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 11:32:36,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-10-16 11:32:37,000 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 11:32:37,000 WARN L371 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 11:32:37,000 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-10-16 11:32:37,021 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,021 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,021 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,022 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,022 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,022 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,022 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,022 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,022 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,022 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,023 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,023 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,023 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,023 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,023 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,023 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,023 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,023 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,024 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,024 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,024 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,024 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,024 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,024 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,024 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,025 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,025 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,025 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,025 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,025 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,025 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,025 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,025 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,026 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,026 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,026 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,026 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,026 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,026 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,026 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,027 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,027 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,027 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,027 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,027 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,027 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,028 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,028 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,028 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,028 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,028 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,028 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,028 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,029 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,029 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,029 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,029 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,029 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,029 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,029 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,029 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,030 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,030 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,030 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,030 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,030 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,030 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,030 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,031 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,031 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,031 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,031 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,031 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,031 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,032 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,032 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,032 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,032 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,032 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,032 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,032 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,032 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,033 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,033 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,033 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,033 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,033 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,033 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,033 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,034 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,034 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,034 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,034 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,034 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,034 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,034 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,034 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,035 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,035 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,035 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,035 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,035 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,035 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,036 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,036 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,036 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,036 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,043 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,043 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,043 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,043 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,044 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,045 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,045 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,045 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,045 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,045 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,046 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,046 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,047 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,047 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,047 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,048 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,048 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,048 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,048 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,049 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,050 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,050 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,050 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,050 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,050 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,051 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,051 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,052 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,052 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,052 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,052 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,053 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,053 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,053 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,054 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,054 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,054 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,055 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,055 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,055 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,055 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,055 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,056 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,061 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,062 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,062 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,062 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,062 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,062 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,066 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,067 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,067 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,067 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,067 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,067 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,069 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,069 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,069 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,069 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,070 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,070 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:37,071 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:32:37,071 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-10-16 11:32:37,072 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:32:37,072 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:32:37,072 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:32:37,072 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:32:37,072 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:32:37,072 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:32:37,072 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:32:37,072 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:32:37,074 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:32:37,074 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 156 places, 138 transitions, 396 flow [2020-10-16 11:32:37,074 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 156 places, 138 transitions, 396 flow [2020-10-16 11:32:37,074 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 156 places, 138 transitions, 396 flow [2020-10-16 11:32:37,094 INFO L129 PetriNetUnfolder]: 9/173 cut-off events. [2020-10-16 11:32:37,094 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-10-16 11:32:37,095 INFO L80 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 173 events. 9/173 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 284 event pairs, 0 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 208. Up to 14 conditions per place. [2020-10-16 11:32:37,100 INFO L117 LiptonReduction]: Number of co-enabled transitions 2832 [2020-10-16 11:32:39,137 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2020-10-16 11:32:39,467 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-10-16 11:32:39,614 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-16 11:32:39,637 INFO L132 LiptonReduction]: Checked pairs total: 4694 [2020-10-16 11:32:39,637 INFO L134 LiptonReduction]: Total number of compositions: 121 [2020-10-16 11:32:39,637 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 45 transitions, 210 flow [2020-10-16 11:32:41,232 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 18584 states. [2020-10-16 11:32:41,232 INFO L276 IsEmpty]: Start isEmpty. Operand 18584 states. [2020-10-16 11:32:41,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-16 11:32:41,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:32:41,232 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-16 11:32:41,232 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:32:41,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:32:41,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1298891, now seen corresponding path program 1 times [2020-10-16 11:32:41,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:32:41,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836181319] [2020-10-16 11:32:41,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:32:41,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:32:41,243 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 11:32:41,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836181319] [2020-10-16 11:32:41,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:32:41,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:32:41,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837447936] [2020-10-16 11:32:41,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:32:41,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:32:41,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:32:41,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:32:41,245 INFO L87 Difference]: Start difference. First operand 18584 states. Second operand 3 states. [2020-10-16 11:32:41,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:32:41,399 INFO L93 Difference]: Finished difference Result 17885 states and 92755 transitions. [2020-10-16 11:32:41,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:32:41,399 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-16 11:32:41,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:32:41,453 INFO L225 Difference]: With dead ends: 17885 [2020-10-16 11:32:41,453 INFO L226 Difference]: Without dead ends: 16791 [2020-10-16 11:32:41,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:32:41,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16791 states. [2020-10-16 11:32:42,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16791 to 16791. [2020-10-16 11:32:42,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16791 states. [2020-10-16 11:32:42,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16791 states to 16791 states and 86558 transitions. [2020-10-16 11:32:42,219 INFO L78 Accepts]: Start accepts. Automaton has 16791 states and 86558 transitions. Word has length 3 [2020-10-16 11:32:42,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:32:42,219 INFO L481 AbstractCegarLoop]: Abstraction has 16791 states and 86558 transitions. [2020-10-16 11:32:42,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:32:42,219 INFO L276 IsEmpty]: Start isEmpty. Operand 16791 states and 86558 transitions. [2020-10-16 11:32:42,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 11:32:42,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:32:42,220 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:32:42,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-10-16 11:32:42,220 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:32:42,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:32:42,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1091574945, now seen corresponding path program 1 times [2020-10-16 11:32:42,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:32:42,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340970590] [2020-10-16 11:32:42,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:32:42,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:32:42,246 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 11:32:42,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340970590] [2020-10-16 11:32:42,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:32:42,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:32:42,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479561534] [2020-10-16 11:32:42,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:32:42,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:32:42,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:32:42,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:32:42,248 INFO L87 Difference]: Start difference. First operand 16791 states and 86558 transitions. Second operand 5 states. [2020-10-16 11:32:42,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:32:42,518 INFO L93 Difference]: Finished difference Result 30985 states and 150574 transitions. [2020-10-16 11:32:42,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:32:42,519 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-16 11:32:42,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:32:42,607 INFO L225 Difference]: With dead ends: 30985 [2020-10-16 11:32:42,608 INFO L226 Difference]: Without dead ends: 30977 [2020-10-16 11:32:42,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:32:44,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30977 states. [2020-10-16 11:32:45,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30977 to 19868. [2020-10-16 11:32:45,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19868 states. [2020-10-16 11:32:45,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19868 states to 19868 states and 103363 transitions. [2020-10-16 11:32:45,196 INFO L78 Accepts]: Start accepts. Automaton has 19868 states and 103363 transitions. Word has length 9 [2020-10-16 11:32:45,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:32:45,196 INFO L481 AbstractCegarLoop]: Abstraction has 19868 states and 103363 transitions. [2020-10-16 11:32:45,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:32:45,197 INFO L276 IsEmpty]: Start isEmpty. Operand 19868 states and 103363 transitions. [2020-10-16 11:32:45,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 11:32:45,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:32:45,197 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:32:45,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-10-16 11:32:45,197 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:32:45,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:32:45,198 INFO L82 PathProgramCache]: Analyzing trace with hash -231509072, now seen corresponding path program 1 times [2020-10-16 11:32:45,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:32:45,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844357848] [2020-10-16 11:32:45,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:32:45,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:32:45,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:32:45,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844357848] [2020-10-16 11:32:45,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:32:45,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:32:45,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773501698] [2020-10-16 11:32:45,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:32:45,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:32:45,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:32:45,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:32:45,226 INFO L87 Difference]: Start difference. First operand 19868 states and 103363 transitions. Second operand 5 states. [2020-10-16 11:32:45,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:32:45,522 INFO L93 Difference]: Finished difference Result 36296 states and 178836 transitions. [2020-10-16 11:32:45,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:32:45,523 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 11:32:45,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:32:45,629 INFO L225 Difference]: With dead ends: 36296 [2020-10-16 11:32:45,630 INFO L226 Difference]: Without dead ends: 36280 [2020-10-16 11:32:45,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:32:46,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36280 states. [2020-10-16 11:32:46,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36280 to 23806. [2020-10-16 11:32:46,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23806 states. [2020-10-16 11:32:46,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23806 states to 23806 states and 125455 transitions. [2020-10-16 11:32:46,814 INFO L78 Accepts]: Start accepts. Automaton has 23806 states and 125455 transitions. Word has length 13 [2020-10-16 11:32:46,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:32:46,814 INFO L481 AbstractCegarLoop]: Abstraction has 23806 states and 125455 transitions. [2020-10-16 11:32:46,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:32:46,815 INFO L276 IsEmpty]: Start isEmpty. Operand 23806 states and 125455 transitions. [2020-10-16 11:32:46,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:32:46,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:32:46,815 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:32:46,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-10-16 11:32:46,815 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:32:46,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:32:46,815 INFO L82 PathProgramCache]: Analyzing trace with hash -588793474, now seen corresponding path program 1 times [2020-10-16 11:32:46,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:32:46,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100506588] [2020-10-16 11:32:46,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:32:46,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:32:46,862 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 11:32:46,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100506588] [2020-10-16 11:32:46,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523353120] [2020-10-16 11:32:46,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:32:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:32:46,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 11:32:46,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:32:47,011 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 11:32:47,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:32:47,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 11:32:47,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190771277] [2020-10-16 11:32:47,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 11:32:47,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:32:47,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 11:32:47,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 11:32:47,013 INFO L87 Difference]: Start difference. First operand 23806 states and 125455 transitions. Second operand 12 states. [2020-10-16 11:32:49,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:32:49,457 INFO L93 Difference]: Finished difference Result 56720 states and 262685 transitions. [2020-10-16 11:32:49,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:32:49,458 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 11:32:49,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:32:49,633 INFO L225 Difference]: With dead ends: 56720 [2020-10-16 11:32:49,633 INFO L226 Difference]: Without dead ends: 56704 [2020-10-16 11:32:49,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-16 11:32:50,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56704 states. [2020-10-16 11:32:50,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56704 to 23629. [2020-10-16 11:32:50,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23629 states. [2020-10-16 11:32:51,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23629 states to 23629 states and 124418 transitions. [2020-10-16 11:32:51,030 INFO L78 Accepts]: Start accepts. Automaton has 23629 states and 124418 transitions. Word has length 15 [2020-10-16 11:32:51,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:32:51,030 INFO L481 AbstractCegarLoop]: Abstraction has 23629 states and 124418 transitions. [2020-10-16 11:32:51,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 11:32:51,030 INFO L276 IsEmpty]: Start isEmpty. Operand 23629 states and 124418 transitions. [2020-10-16 11:32:51,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:32:51,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:32:51,030 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:32:51,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-10-16 11:32:51,231 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:32:51,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:32:51,232 INFO L82 PathProgramCache]: Analyzing trace with hash 858081470, now seen corresponding path program 2 times [2020-10-16 11:32:51,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:32:51,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430521883] [2020-10-16 11:32:51,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:32:51,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:32:51,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:32:51,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430521883] [2020-10-16 11:32:51,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:32:51,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:32:51,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075698513] [2020-10-16 11:32:51,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:32:51,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:32:51,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:32:51,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:32:51,276 INFO L87 Difference]: Start difference. First operand 23629 states and 124418 transitions. Second operand 7 states. [2020-10-16 11:32:51,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:32:51,887 INFO L93 Difference]: Finished difference Result 58078 states and 269185 transitions. [2020-10-16 11:32:51,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:32:51,887 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-16 11:32:51,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:32:52,051 INFO L225 Difference]: With dead ends: 58078 [2020-10-16 11:32:52,051 INFO L226 Difference]: Without dead ends: 58061 [2020-10-16 11:32:52,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 11:32:52,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58061 states. [2020-10-16 11:32:54,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58061 to 23109. [2020-10-16 11:32:54,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23109 states. [2020-10-16 11:32:54,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23109 states to 23109 states and 121651 transitions. [2020-10-16 11:32:54,099 INFO L78 Accepts]: Start accepts. Automaton has 23109 states and 121651 transitions. Word has length 15 [2020-10-16 11:32:54,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:32:54,100 INFO L481 AbstractCegarLoop]: Abstraction has 23109 states and 121651 transitions. [2020-10-16 11:32:54,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:32:54,100 INFO L276 IsEmpty]: Start isEmpty. Operand 23109 states and 121651 transitions. [2020-10-16 11:32:54,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 11:32:54,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:32:54,100 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:32:54,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2020-10-16 11:32:54,100 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:32:54,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:32:54,101 INFO L82 PathProgramCache]: Analyzing trace with hash 704376303, now seen corresponding path program 1 times [2020-10-16 11:32:54,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:32:54,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267257182] [2020-10-16 11:32:54,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:32:54,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:32:54,127 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:32:54,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267257182] [2020-10-16 11:32:54,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:32:54,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:32:54,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620760686] [2020-10-16 11:32:54,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:32:54,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:32:54,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:32:54,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:32:54,129 INFO L87 Difference]: Start difference. First operand 23109 states and 121651 transitions. Second operand 5 states. [2020-10-16 11:32:54,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:32:54,446 INFO L93 Difference]: Finished difference Result 41885 states and 209629 transitions. [2020-10-16 11:32:54,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:32:54,446 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-16 11:32:54,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:32:54,567 INFO L225 Difference]: With dead ends: 41885 [2020-10-16 11:32:54,567 INFO L226 Difference]: Without dead ends: 41856 [2020-10-16 11:32:54,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:32:55,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41856 states. [2020-10-16 11:32:55,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41856 to 28237. [2020-10-16 11:32:55,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28237 states. [2020-10-16 11:32:55,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28237 states to 28237 states and 150261 transitions. [2020-10-16 11:32:55,904 INFO L78 Accepts]: Start accepts. Automaton has 28237 states and 150261 transitions. Word has length 17 [2020-10-16 11:32:55,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:32:55,905 INFO L481 AbstractCegarLoop]: Abstraction has 28237 states and 150261 transitions. [2020-10-16 11:32:55,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:32:55,905 INFO L276 IsEmpty]: Start isEmpty. Operand 28237 states and 150261 transitions. [2020-10-16 11:32:55,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:32:55,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:32:55,905 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:32:55,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2020-10-16 11:32:55,906 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:32:55,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:32:55,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1918672061, now seen corresponding path program 1 times [2020-10-16 11:32:55,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:32:55,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981648031] [2020-10-16 11:32:55,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:32:55,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:32:55,946 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 11:32:55,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981648031] [2020-10-16 11:32:55,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036729578] [2020-10-16 11:32:55,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:32:56,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:32:56,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 11:32:56,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:32:56,092 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 11:32:56,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:32:56,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 11:32:56,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695108713] [2020-10-16 11:32:56,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 11:32:56,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:32:56,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 11:32:56,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 11:32:56,093 INFO L87 Difference]: Start difference. First operand 28237 states and 150261 transitions. Second operand 12 states. [2020-10-16 11:32:56,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:32:56,775 INFO L93 Difference]: Finished difference Result 66831 states and 314874 transitions. [2020-10-16 11:32:56,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:32:56,776 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-16 11:32:56,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:32:56,988 INFO L225 Difference]: With dead ends: 66831 [2020-10-16 11:32:56,988 INFO L226 Difference]: Without dead ends: 66807 [2020-10-16 11:32:56,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-16 11:33:00,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66807 states. [2020-10-16 11:33:00,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66807 to 28673. [2020-10-16 11:33:00,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28673 states. [2020-10-16 11:33:01,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28673 states to 28673 states and 152375 transitions. [2020-10-16 11:33:01,036 INFO L78 Accepts]: Start accepts. Automaton has 28673 states and 152375 transitions. Word has length 19 [2020-10-16 11:33:01,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:33:01,036 INFO L481 AbstractCegarLoop]: Abstraction has 28673 states and 152375 transitions. [2020-10-16 11:33:01,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 11:33:01,036 INFO L276 IsEmpty]: Start isEmpty. Operand 28673 states and 152375 transitions. [2020-10-16 11:33:01,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:33:01,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:33:01,037 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:33:01,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2020-10-16 11:33:01,252 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:33:01,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:33:01,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1064014108, now seen corresponding path program 1 times [2020-10-16 11:33:01,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:33:01,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923624011] [2020-10-16 11:33:01,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:33:01,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:33:01,298 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:33:01,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923624011] [2020-10-16 11:33:01,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705997754] [2020-10-16 11:33:01,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:33:01,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:33:01,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 11:33:01,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:33:01,447 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:33:01,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:33:01,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 11:33:01,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821196188] [2020-10-16 11:33:01,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 11:33:01,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:33:01,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 11:33:01,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 11:33:01,449 INFO L87 Difference]: Start difference. First operand 28673 states and 152375 transitions. Second operand 12 states. [2020-10-16 11:33:02,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:33:02,162 INFO L93 Difference]: Finished difference Result 69484 states and 328264 transitions. [2020-10-16 11:33:02,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:33:02,163 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-16 11:33:02,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:33:02,370 INFO L225 Difference]: With dead ends: 69484 [2020-10-16 11:33:02,370 INFO L226 Difference]: Without dead ends: 69451 [2020-10-16 11:33:02,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-16 11:33:03,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69451 states. [2020-10-16 11:33:04,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69451 to 28873. [2020-10-16 11:33:04,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28873 states. [2020-10-16 11:33:04,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28873 states to 28873 states and 153454 transitions. [2020-10-16 11:33:04,647 INFO L78 Accepts]: Start accepts. Automaton has 28873 states and 153454 transitions. Word has length 19 [2020-10-16 11:33:04,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:33:04,647 INFO L481 AbstractCegarLoop]: Abstraction has 28873 states and 153454 transitions. [2020-10-16 11:33:04,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 11:33:04,647 INFO L276 IsEmpty]: Start isEmpty. Operand 28873 states and 153454 transitions. [2020-10-16 11:33:04,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:33:04,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:33:04,648 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:33:04,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:33:04,849 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:33:04,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:33:04,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1699177508, now seen corresponding path program 2 times [2020-10-16 11:33:04,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:33:04,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961286409] [2020-10-16 11:33:04,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:33:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:33:04,892 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:33:04,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961286409] [2020-10-16 11:33:04,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:33:04,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:33:04,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541123188] [2020-10-16 11:33:04,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:33:04,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:33:04,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:33:04,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:33:04,894 INFO L87 Difference]: Start difference. First operand 28873 states and 153454 transitions. Second operand 7 states. [2020-10-16 11:33:05,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:33:05,568 INFO L93 Difference]: Finished difference Result 70510 states and 333491 transitions. [2020-10-16 11:33:05,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:33:05,568 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-16 11:33:05,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:33:05,787 INFO L225 Difference]: With dead ends: 70510 [2020-10-16 11:33:05,787 INFO L226 Difference]: Without dead ends: 70477 [2020-10-16 11:33:05,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 11:33:06,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70477 states. [2020-10-16 11:33:07,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70477 to 28942. [2020-10-16 11:33:07,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28942 states. [2020-10-16 11:33:07,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28942 states to 28942 states and 153921 transitions. [2020-10-16 11:33:07,588 INFO L78 Accepts]: Start accepts. Automaton has 28942 states and 153921 transitions. Word has length 19 [2020-10-16 11:33:07,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:33:07,588 INFO L481 AbstractCegarLoop]: Abstraction has 28942 states and 153921 transitions. [2020-10-16 11:33:07,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:33:07,588 INFO L276 IsEmpty]: Start isEmpty. Operand 28942 states and 153921 transitions. [2020-10-16 11:33:07,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:33:07,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:33:07,589 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:33:07,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2020-10-16 11:33:07,589 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:33:07,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:33:07,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1699205315, now seen corresponding path program 2 times [2020-10-16 11:33:07,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:33:07,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485647920] [2020-10-16 11:33:07,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:33:07,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:33:07,638 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:33:07,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485647920] [2020-10-16 11:33:07,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:33:07,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:33:07,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722571700] [2020-10-16 11:33:07,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:33:07,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:33:07,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:33:07,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:33:07,641 INFO L87 Difference]: Start difference. First operand 28942 states and 153921 transitions. Second operand 7 states. [2020-10-16 11:33:09,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:33:09,516 INFO L93 Difference]: Finished difference Result 70096 states and 331298 transitions. [2020-10-16 11:33:09,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:33:09,517 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-16 11:33:09,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:33:09,726 INFO L225 Difference]: With dead ends: 70096 [2020-10-16 11:33:09,727 INFO L226 Difference]: Without dead ends: 70063 [2020-10-16 11:33:09,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 11:33:10,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70063 states. [2020-10-16 11:33:11,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70063 to 29094. [2020-10-16 11:33:11,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29094 states. [2020-10-16 11:33:11,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29094 states to 29094 states and 154883 transitions. [2020-10-16 11:33:11,545 INFO L78 Accepts]: Start accepts. Automaton has 29094 states and 154883 transitions. Word has length 19 [2020-10-16 11:33:11,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:33:11,545 INFO L481 AbstractCegarLoop]: Abstraction has 29094 states and 154883 transitions. [2020-10-16 11:33:11,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:33:11,545 INFO L276 IsEmpty]: Start isEmpty. Operand 29094 states and 154883 transitions. [2020-10-16 11:33:11,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:33:11,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:33:11,546 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:33:11,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2020-10-16 11:33:11,547 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:33:11,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:33:11,547 INFO L82 PathProgramCache]: Analyzing trace with hash -228866966, now seen corresponding path program 1 times [2020-10-16 11:33:11,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:33:11,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916836716] [2020-10-16 11:33:11,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:33:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:33:11,619 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:33:11,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916836716] [2020-10-16 11:33:11,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822215812] [2020-10-16 11:33:11,620 INFO L95 rtionOrderModulation]: Keeping assertion order 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 11:33:11,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:33:11,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:33:11,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:33:11,825 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:33:11,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:33:11,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 11:33:11,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973493344] [2020-10-16 11:33:11,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 11:33:11,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:33:11,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 11:33:11,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 11:33:11,827 INFO L87 Difference]: Start difference. First operand 29094 states and 154883 transitions. Second operand 16 states. [2020-10-16 11:33:14,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:33:14,103 INFO L93 Difference]: Finished difference Result 100731 states and 448596 transitions. [2020-10-16 11:33:14,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:33:14,104 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-16 11:33:14,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:33:14,434 INFO L225 Difference]: With dead ends: 100731 [2020-10-16 11:33:14,435 INFO L226 Difference]: Without dead ends: 100715 [2020-10-16 11:33:14,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 11:33:15,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100715 states. [2020-10-16 11:33:16,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100715 to 28719. [2020-10-16 11:33:16,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28719 states. [2020-10-16 11:33:16,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28719 states to 28719 states and 152760 transitions. [2020-10-16 11:33:16,697 INFO L78 Accepts]: Start accepts. Automaton has 28719 states and 152760 transitions. Word has length 21 [2020-10-16 11:33:16,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:33:16,697 INFO L481 AbstractCegarLoop]: Abstraction has 28719 states and 152760 transitions. [2020-10-16 11:33:16,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 11:33:16,697 INFO L276 IsEmpty]: Start isEmpty. Operand 28719 states and 152760 transitions. [2020-10-16 11:33:16,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:33:16,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:33:16,698 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:33:16,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2020-10-16 11:33:16,899 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:33:16,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:33:16,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1302908714, now seen corresponding path program 2 times [2020-10-16 11:33:16,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:33:16,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228590080] [2020-10-16 11:33:16,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:33:16,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:33:16,964 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 11:33:16,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228590080] [2020-10-16 11:33:16,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315772964] [2020-10-16 11:33:16,965 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 11:33:17,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:33:17,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:33:17,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:33:17,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:33:17,165 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 11:33:17,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:33:17,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 11:33:17,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114437418] [2020-10-16 11:33:17,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 11:33:17,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:33:17,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 11:33:17,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 11:33:17,167 INFO L87 Difference]: Start difference. First operand 28719 states and 152760 transitions. Second operand 16 states. [2020-10-16 11:33:19,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:33:19,031 INFO L93 Difference]: Finished difference Result 99876 states and 444348 transitions. [2020-10-16 11:33:19,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:33:19,033 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-16 11:33:19,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:33:19,317 INFO L225 Difference]: With dead ends: 99876 [2020-10-16 11:33:19,317 INFO L226 Difference]: Without dead ends: 99855 [2020-10-16 11:33:19,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 11:33:20,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99855 states. [2020-10-16 11:33:21,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99855 to 28343. [2020-10-16 11:33:21,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28343 states. [2020-10-16 11:33:21,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28343 states to 28343 states and 150639 transitions. [2020-10-16 11:33:21,516 INFO L78 Accepts]: Start accepts. Automaton has 28343 states and 150639 transitions. Word has length 21 [2020-10-16 11:33:21,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:33:21,516 INFO L481 AbstractCegarLoop]: Abstraction has 28343 states and 150639 transitions. [2020-10-16 11:33:21,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 11:33:21,516 INFO L276 IsEmpty]: Start isEmpty. Operand 28343 states and 150639 transitions. [2020-10-16 11:33:21,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:33:21,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:33:21,517 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forcibly destroying the process [2020-10-16 11:33:23,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:33:23,242 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:33:23,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:33:23,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1149181014, now seen corresponding path program 3 times [2020-10-16 11:33:23,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:33:23,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074150808] [2020-10-16 11:33:23,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:33:23,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:33:23,313 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:33:23,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074150808] [2020-10-16 11:33:23,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351854578] [2020-10-16 11:33:23,314 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 11:33:23,398 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 11:33:23,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:33:23,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:33:23,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:33:23,507 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:33:23,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:33:23,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 11:33:23,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977697197] [2020-10-16 11:33:23,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 11:33:23,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:33:23,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 11:33:23,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 11:33:23,509 INFO L87 Difference]: Start difference. First operand 28343 states and 150639 transitions. Second operand 16 states. [2020-10-16 11:33:25,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:33:25,018 INFO L93 Difference]: Finished difference Result 100071 states and 445291 transitions. [2020-10-16 11:33:25,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:33:25,019 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-16 11:33:25,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:33:25,305 INFO L225 Difference]: With dead ends: 100071 [2020-10-16 11:33:25,305 INFO L226 Difference]: Without dead ends: 100055 [2020-10-16 11:33:25,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 11:33:26,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100055 states. [2020-10-16 11:33:27,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100055 to 27654. [2020-10-16 11:33:27,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27654 states. [2020-10-16 11:33:28,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27654 states to 27654 states and 147080 transitions. [2020-10-16 11:33:28,010 INFO L78 Accepts]: Start accepts. Automaton has 27654 states and 147080 transitions. Word has length 21 [2020-10-16 11:33:28,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:33:28,011 INFO L481 AbstractCegarLoop]: Abstraction has 27654 states and 147080 transitions. [2020-10-16 11:33:28,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 11:33:28,011 INFO L276 IsEmpty]: Start isEmpty. Operand 27654 states and 147080 transitions. [2020-10-16 11:33:28,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:33:28,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:33:28,012 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:33:28,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2020-10-16 11:33:28,213 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:33:28,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:33:28,213 INFO L82 PathProgramCache]: Analyzing trace with hash 315341610, now seen corresponding path program 4 times [2020-10-16 11:33:28,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:33:28,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580617065] [2020-10-16 11:33:28,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:33:28,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:33:28,276 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:33:28,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580617065] [2020-10-16 11:33:28,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108039330] [2020-10-16 11:33:28,276 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 11:33:28,362 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 11:33:28,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:33:28,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:33:28,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:33:28,469 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:33:28,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:33:28,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 11:33:28,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970934636] [2020-10-16 11:33:28,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 11:33:28,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:33:28,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 11:33:28,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 11:33:28,471 INFO L87 Difference]: Start difference. First operand 27654 states and 147080 transitions. Second operand 16 states. [2020-10-16 11:33:29,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:33:29,854 INFO L93 Difference]: Finished difference Result 99523 states and 442763 transitions. [2020-10-16 11:33:29,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:33:29,855 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-16 11:33:29,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:33:30,132 INFO L225 Difference]: With dead ends: 99523 [2020-10-16 11:33:30,132 INFO L226 Difference]: Without dead ends: 99502 [2020-10-16 11:33:30,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 11:33:31,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99502 states. [2020-10-16 11:33:32,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99502 to 27278. [2020-10-16 11:33:32,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27278 states. [2020-10-16 11:33:32,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27278 states to 27278 states and 144959 transitions. [2020-10-16 11:33:32,699 INFO L78 Accepts]: Start accepts. Automaton has 27278 states and 144959 transitions. Word has length 21 [2020-10-16 11:33:32,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:33:32,699 INFO L481 AbstractCegarLoop]: Abstraction has 27278 states and 144959 transitions. [2020-10-16 11:33:32,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 11:33:32,699 INFO L276 IsEmpty]: Start isEmpty. Operand 27278 states and 144959 transitions. [2020-10-16 11:33:32,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:33:32,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:33:32,700 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:33:32,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2020-10-16 11:33:32,901 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:33:32,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:33:32,902 INFO L82 PathProgramCache]: Analyzing trace with hash -822012438, now seen corresponding path program 5 times [2020-10-16 11:33:32,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:33:32,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906483594] [2020-10-16 11:33:32,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:33:32,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:33:32,959 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:33:32,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906483594] [2020-10-16 11:33:32,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:33:32,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:33:32,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357773242] [2020-10-16 11:33:32,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:33:32,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:33:32,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:33:32,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:33:32,961 INFO L87 Difference]: Start difference. First operand 27278 states and 144959 transitions. Second operand 9 states. [2020-10-16 11:33:34,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:33:34,389 INFO L93 Difference]: Finished difference Result 99710 states and 443686 transitions. [2020-10-16 11:33:34,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:33:34,389 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 11:33:34,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:33:34,691 INFO L225 Difference]: With dead ends: 99710 [2020-10-16 11:33:34,691 INFO L226 Difference]: Without dead ends: 99694 [2020-10-16 11:33:34,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:33:35,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99694 states. [2020-10-16 11:33:37,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99694 to 26597. [2020-10-16 11:33:37,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26597 states. [2020-10-16 11:33:37,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26597 states to 26597 states and 141420 transitions. [2020-10-16 11:33:37,431 INFO L78 Accepts]: Start accepts. Automaton has 26597 states and 141420 transitions. Word has length 21 [2020-10-16 11:33:37,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:33:37,431 INFO L481 AbstractCegarLoop]: Abstraction has 26597 states and 141420 transitions. [2020-10-16 11:33:37,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:33:37,431 INFO L276 IsEmpty]: Start isEmpty. Operand 26597 states and 141420 transitions. [2020-10-16 11:33:37,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:33:37,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:33:37,432 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:33:37,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2020-10-16 11:33:37,432 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:33:37,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:33:37,432 INFO L82 PathProgramCache]: Analyzing trace with hash -848707158, now seen corresponding path program 6 times [2020-10-16 11:33:37,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:33:37,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157175234] [2020-10-16 11:33:37,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:33:37,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:33:37,493 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:33:37,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157175234] [2020-10-16 11:33:37,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:33:37,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:33:37,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32751765] [2020-10-16 11:33:37,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:33:37,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:33:37,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:33:37,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:33:37,495 INFO L87 Difference]: Start difference. First operand 26597 states and 141420 transitions. Second operand 9 states. [2020-10-16 11:33:38,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:33:38,918 INFO L93 Difference]: Finished difference Result 98863 states and 439458 transitions. [2020-10-16 11:33:38,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:33:38,918 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 11:33:38,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:33:39,211 INFO L225 Difference]: With dead ends: 98863 [2020-10-16 11:33:39,211 INFO L226 Difference]: Without dead ends: 98841 [2020-10-16 11:33:39,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:33:40,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98841 states. [2020-10-16 11:33:41,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98841 to 25744. [2020-10-16 11:33:41,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25744 states. [2020-10-16 11:33:41,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25744 states to 25744 states and 137181 transitions. [2020-10-16 11:33:41,697 INFO L78 Accepts]: Start accepts. Automaton has 25744 states and 137181 transitions. Word has length 21 [2020-10-16 11:33:41,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:33:41,697 INFO L481 AbstractCegarLoop]: Abstraction has 25744 states and 137181 transitions. [2020-10-16 11:33:41,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:33:41,697 INFO L276 IsEmpty]: Start isEmpty. Operand 25744 states and 137181 transitions. [2020-10-16 11:33:41,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:33:41,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:33:41,698 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:33:41,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2020-10-16 11:33:41,699 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:33:41,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:33:41,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1818695965, now seen corresponding path program 1 times [2020-10-16 11:33:41,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:33:41,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022964336] [2020-10-16 11:33:41,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:33:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:33:41,726 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:33:41,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022964336] [2020-10-16 11:33:41,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:33:41,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:33:41,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436799715] [2020-10-16 11:33:41,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:33:41,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:33:41,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:33:41,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:33:41,728 INFO L87 Difference]: Start difference. First operand 25744 states and 137181 transitions. Second operand 5 states. [2020-10-16 11:33:42,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:33:42,066 INFO L93 Difference]: Finished difference Result 46463 states and 236107 transitions. [2020-10-16 11:33:42,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:33:42,066 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-16 11:33:42,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:33:42,196 INFO L225 Difference]: With dead ends: 46463 [2020-10-16 11:33:42,196 INFO L226 Difference]: Without dead ends: 46417 [2020-10-16 11:33:42,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:33:42,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46417 states. [2020-10-16 11:33:43,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46417 to 31960. [2020-10-16 11:33:43,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31960 states. [2020-10-16 11:33:43,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31960 states to 31960 states and 171209 transitions. [2020-10-16 11:33:43,569 INFO L78 Accepts]: Start accepts. Automaton has 31960 states and 171209 transitions. Word has length 21 [2020-10-16 11:33:43,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:33:43,570 INFO L481 AbstractCegarLoop]: Abstraction has 31960 states and 171209 transitions. [2020-10-16 11:33:43,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:33:43,570 INFO L276 IsEmpty]: Start isEmpty. Operand 31960 states and 171209 transitions. [2020-10-16 11:33:43,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 11:33:43,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:33:43,572 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:33:43,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2020-10-16 11:33:43,572 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:33:43,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:33:43,572 INFO L82 PathProgramCache]: Analyzing trace with hash 605532395, now seen corresponding path program 1 times [2020-10-16 11:33:43,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:33:43,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866455131] [2020-10-16 11:33:43,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:33:43,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:33:44,045 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 11:33:44,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866455131] [2020-10-16 11:33:44,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182599376] [2020-10-16 11:33:44,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:33:44,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:33:44,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 11:33:44,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:33:44,194 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 11:33:44,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:33:44,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 11:33:44,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140380967] [2020-10-16 11:33:44,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 11:33:44,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:33:44,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 11:33:44,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 11:33:44,196 INFO L87 Difference]: Start difference. First operand 31960 states and 171209 transitions. Second operand 12 states. [2020-10-16 11:33:45,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:33:45,029 INFO L93 Difference]: Finished difference Result 75380 states and 361389 transitions. [2020-10-16 11:33:45,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:33:45,030 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-16 11:33:45,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:33:45,242 INFO L225 Difference]: With dead ends: 75380 [2020-10-16 11:33:45,243 INFO L226 Difference]: Without dead ends: 75344 [2020-10-16 11:33:45,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-16 11:33:46,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75344 states. [2020-10-16 11:33:46,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75344 to 32974. [2020-10-16 11:33:46,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32974 states. [2020-10-16 11:33:47,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32974 states to 32974 states and 176363 transitions. [2020-10-16 11:33:47,088 INFO L78 Accepts]: Start accepts. Automaton has 32974 states and 176363 transitions. Word has length 23 [2020-10-16 11:33:47,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:33:47,088 INFO L481 AbstractCegarLoop]: Abstraction has 32974 states and 176363 transitions. [2020-10-16 11:33:47,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 11:33:47,088 INFO L276 IsEmpty]: Start isEmpty. Operand 32974 states and 176363 transitions. [2020-10-16 11:33:47,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 11:33:47,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:33:47,090 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:33:47,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:33:47,291 INFO L429 AbstractCegarLoop]: === Iteration 19 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:33:47,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:33:47,291 INFO L82 PathProgramCache]: Analyzing trace with hash 768040394, now seen corresponding path program 1 times [2020-10-16 11:33:47,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:33:47,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112694488] [2020-10-16 11:33:47,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:33:47,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:33:47,336 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 11:33:47,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112694488] [2020-10-16 11:33:47,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475559475] [2020-10-16 11:33:47,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:33:47,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:33:47,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 11:33:47,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:33:49,315 WARN L193 SmtUtils]: Spent 1.89 s on a formula simplification that was a NOOP. DAG size: 7 [2020-10-16 11:33:49,371 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 11:33:49,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:33:49,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 11:33:49,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492214848] [2020-10-16 11:33:49,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 11:33:49,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:33:49,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 11:33:49,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 11:33:49,372 INFO L87 Difference]: Start difference. First operand 32974 states and 176363 transitions. Second operand 12 states. [2020-10-16 11:33:50,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:33:50,126 INFO L93 Difference]: Finished difference Result 79487 states and 381757 transitions. [2020-10-16 11:33:50,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:33:50,126 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-16 11:33:50,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:33:50,355 INFO L225 Difference]: With dead ends: 79487 [2020-10-16 11:33:50,355 INFO L226 Difference]: Without dead ends: 79445 [2020-10-16 11:33:50,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-16 11:33:51,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79445 states. [2020-10-16 11:33:52,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79445 to 33981. [2020-10-16 11:33:52,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33981 states. [2020-10-16 11:33:52,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33981 states to 33981 states and 181710 transitions. [2020-10-16 11:33:52,310 INFO L78 Accepts]: Start accepts. Automaton has 33981 states and 181710 transitions. Word has length 23 [2020-10-16 11:33:52,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:33:52,311 INFO L481 AbstractCegarLoop]: Abstraction has 33981 states and 181710 transitions. [2020-10-16 11:33:52,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 11:33:52,311 INFO L276 IsEmpty]: Start isEmpty. Operand 33981 states and 181710 transitions. [2020-10-16 11:33:52,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 11:33:52,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:33:52,313 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:33:52,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:33:52,514 INFO L429 AbstractCegarLoop]: === Iteration 20 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:33:52,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:33:52,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1041867770, now seen corresponding path program 1 times [2020-10-16 11:33:52,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:33:52,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200794616] [2020-10-16 11:33:52,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:33:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:33:52,567 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:33:52,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200794616] [2020-10-16 11:33:52,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8115475] [2020-10-16 11:33:52,568 INFO L95 rtionOrderModulation]: Keeping assertion order 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 11:33:52,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:33:52,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 11:33:52,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:33:52,706 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:33:52,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:33:52,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 11:33:52,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818693753] [2020-10-16 11:33:52,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 11:33:52,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:33:52,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 11:33:52,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 11:33:52,707 INFO L87 Difference]: Start difference. First operand 33981 states and 181710 transitions. Second operand 12 states. [2020-10-16 11:33:53,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:33:53,753 INFO L93 Difference]: Finished difference Result 82728 states and 398553 transitions. [2020-10-16 11:33:53,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:33:53,754 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-16 11:33:53,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:33:53,997 INFO L225 Difference]: With dead ends: 82728 [2020-10-16 11:33:53,997 INFO L226 Difference]: Without dead ends: 82673 [2020-10-16 11:33:53,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-16 11:33:54,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82673 states. [2020-10-16 11:33:55,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82673 to 34821. [2020-10-16 11:33:55,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34821 states. [2020-10-16 11:33:56,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34821 states to 34821 states and 186422 transitions. [2020-10-16 11:33:56,025 INFO L78 Accepts]: Start accepts. Automaton has 34821 states and 186422 transitions. Word has length 23 [2020-10-16 11:33:56,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:33:56,026 INFO L481 AbstractCegarLoop]: Abstraction has 34821 states and 186422 transitions. [2020-10-16 11:33:56,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 11:33:56,026 INFO L276 IsEmpty]: Start isEmpty. Operand 34821 states and 186422 transitions. [2020-10-16 11:33:56,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 11:33:56,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:33:56,028 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:33:56,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:33:56,234 INFO L429 AbstractCegarLoop]: === Iteration 21 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:33:56,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:33:56,234 INFO L82 PathProgramCache]: Analyzing trace with hash -284839030, now seen corresponding path program 2 times [2020-10-16 11:33:56,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:33:56,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890341232] [2020-10-16 11:33:56,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:33:56,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:33:56,280 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:33:56,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890341232] [2020-10-16 11:33:56,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:33:56,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:33:56,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447299019] [2020-10-16 11:33:56,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:33:56,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:33:56,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:33:56,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:33:56,282 INFO L87 Difference]: Start difference. First operand 34821 states and 186422 transitions. Second operand 7 states. [2020-10-16 11:33:57,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:33:57,330 INFO L93 Difference]: Finished difference Result 83507 states and 402693 transitions. [2020-10-16 11:33:57,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:33:57,330 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-16 11:33:57,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:33:57,583 INFO L225 Difference]: With dead ends: 83507 [2020-10-16 11:33:57,583 INFO L226 Difference]: Without dead ends: 83452 [2020-10-16 11:33:57,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 11:33:58,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83452 states. [2020-10-16 11:33:59,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83452 to 35694. [2020-10-16 11:33:59,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35694 states. [2020-10-16 11:33:59,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35694 states to 35694 states and 191145 transitions. [2020-10-16 11:33:59,588 INFO L78 Accepts]: Start accepts. Automaton has 35694 states and 191145 transitions. Word has length 23 [2020-10-16 11:33:59,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:33:59,588 INFO L481 AbstractCegarLoop]: Abstraction has 35694 states and 191145 transitions. [2020-10-16 11:33:59,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:33:59,588 INFO L276 IsEmpty]: Start isEmpty. Operand 35694 states and 191145 transitions. [2020-10-16 11:33:59,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 11:33:59,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:33:59,590 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:33:59,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2020-10-16 11:33:59,590 INFO L429 AbstractCegarLoop]: === Iteration 22 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:33:59,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:33:59,591 INFO L82 PathProgramCache]: Analyzing trace with hash -284850438, now seen corresponding path program 2 times [2020-10-16 11:33:59,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:33:59,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350947132] [2020-10-16 11:33:59,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:33:59,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:33:59,633 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:33:59,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350947132] [2020-10-16 11:33:59,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:33:59,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:33:59,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700491646] [2020-10-16 11:33:59,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:33:59,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:33:59,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:33:59,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:33:59,635 INFO L87 Difference]: Start difference. First operand 35694 states and 191145 transitions. Second operand 7 states. [2020-10-16 11:34:00,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:34:00,803 INFO L93 Difference]: Finished difference Result 83523 states and 402462 transitions. [2020-10-16 11:34:00,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:34:00,803 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-16 11:34:00,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:34:01,058 INFO L225 Difference]: With dead ends: 83523 [2020-10-16 11:34:01,058 INFO L226 Difference]: Without dead ends: 83468 [2020-10-16 11:34:01,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 11:34:01,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83468 states. [2020-10-16 11:34:02,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83468 to 36306. [2020-10-16 11:34:02,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36306 states. [2020-10-16 11:34:03,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36306 states to 36306 states and 194552 transitions. [2020-10-16 11:34:03,022 INFO L78 Accepts]: Start accepts. Automaton has 36306 states and 194552 transitions. Word has length 23 [2020-10-16 11:34:03,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:34:03,022 INFO L481 AbstractCegarLoop]: Abstraction has 36306 states and 194552 transitions. [2020-10-16 11:34:03,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:34:03,023 INFO L276 IsEmpty]: Start isEmpty. Operand 36306 states and 194552 transitions. [2020-10-16 11:34:03,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 11:34:03,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:34:03,025 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:34:03,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2020-10-16 11:34:03,025 INFO L429 AbstractCegarLoop]: === Iteration 23 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:34:03,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:34:03,025 INFO L82 PathProgramCache]: Analyzing trace with hash -284866837, now seen corresponding path program 2 times [2020-10-16 11:34:03,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:34:03,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920525405] [2020-10-16 11:34:03,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:34:03,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:34:03,066 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:34:03,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920525405] [2020-10-16 11:34:03,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:34:03,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:34:03,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951034625] [2020-10-16 11:34:03,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:34:03,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:34:03,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:34:03,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:34:03,068 INFO L87 Difference]: Start difference. First operand 36306 states and 194552 transitions. Second operand 7 states. [2020-10-16 11:34:04,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:34:04,275 INFO L93 Difference]: Finished difference Result 83918 states and 404136 transitions. [2020-10-16 11:34:04,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:34:04,275 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-16 11:34:04,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:34:04,528 INFO L225 Difference]: With dead ends: 83918 [2020-10-16 11:34:04,528 INFO L226 Difference]: Without dead ends: 83863 [2020-10-16 11:34:04,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 11:34:05,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83863 states. [2020-10-16 11:34:06,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83863 to 37062. [2020-10-16 11:34:06,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37062 states. [2020-10-16 11:34:06,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37062 states to 37062 states and 198528 transitions. [2020-10-16 11:34:06,467 INFO L78 Accepts]: Start accepts. Automaton has 37062 states and 198528 transitions. Word has length 23 [2020-10-16 11:34:06,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:34:06,467 INFO L481 AbstractCegarLoop]: Abstraction has 37062 states and 198528 transitions. [2020-10-16 11:34:06,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:34:06,467 INFO L276 IsEmpty]: Start isEmpty. Operand 37062 states and 198528 transitions. [2020-10-16 11:34:06,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:34:06,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:34:06,470 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:34:06,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2020-10-16 11:34:06,470 INFO L429 AbstractCegarLoop]: === Iteration 24 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:34:06,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:34:06,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1146013160, now seen corresponding path program 1 times [2020-10-16 11:34:06,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:34:06,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966321886] [2020-10-16 11:34:06,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:34:06,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:34:06,535 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 11:34:06,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966321886] [2020-10-16 11:34:06,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70830548] [2020-10-16 11:34:06,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:34:06,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:34:06,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:34:06,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:34:06,725 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 11:34:06,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:34:06,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 11:34:06,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091722695] [2020-10-16 11:34:06,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 11:34:06,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:34:06,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 11:34:06,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 11:34:06,727 INFO L87 Difference]: Start difference. First operand 37062 states and 198528 transitions. Second operand 16 states. [2020-10-16 11:34:08,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:34:08,914 INFO L93 Difference]: Finished difference Result 122892 states and 561130 transitions. [2020-10-16 11:34:08,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:34:08,914 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-16 11:34:08,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:34:09,266 INFO L225 Difference]: With dead ends: 122892 [2020-10-16 11:34:09,266 INFO L226 Difference]: Without dead ends: 122862 [2020-10-16 11:34:09,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 11:34:10,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122862 states. [2020-10-16 11:34:11,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122862 to 36727. [2020-10-16 11:34:11,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36727 states. [2020-10-16 11:34:11,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36727 states to 36727 states and 196466 transitions. [2020-10-16 11:34:11,834 INFO L78 Accepts]: Start accepts. Automaton has 36727 states and 196466 transitions. Word has length 25 [2020-10-16 11:34:11,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:34:11,834 INFO L481 AbstractCegarLoop]: Abstraction has 36727 states and 196466 transitions. [2020-10-16 11:34:11,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 11:34:11,834 INFO L276 IsEmpty]: Start isEmpty. Operand 36727 states and 196466 transitions. [2020-10-16 11:34:11,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:34:11,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:34:11,837 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:34:12,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2020-10-16 11:34:12,038 INFO L429 AbstractCegarLoop]: === Iteration 25 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:34:12,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:34:12,038 INFO L82 PathProgramCache]: Analyzing trace with hash -872185784, now seen corresponding path program 1 times [2020-10-16 11:34:12,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:34:12,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338819418] [2020-10-16 11:34:12,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:34:12,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:34:12,106 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 11:34:12,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338819418] [2020-10-16 11:34:12,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715371692] [2020-10-16 11:34:12,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:34:12,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:34:12,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:34:12,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:34:12,763 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 11:34:12,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:34:12,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 11:34:12,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644339437] [2020-10-16 11:34:12,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 11:34:12,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:34:12,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 11:34:12,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 11:34:12,765 INFO L87 Difference]: Start difference. First operand 36727 states and 196466 transitions. Second operand 16 states. [2020-10-16 11:34:14,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:34:14,513 INFO L93 Difference]: Finished difference Result 121590 states and 554657 transitions. [2020-10-16 11:34:14,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:34:14,514 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-16 11:34:14,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:34:14,867 INFO L225 Difference]: With dead ends: 121590 [2020-10-16 11:34:14,868 INFO L226 Difference]: Without dead ends: 121560 [2020-10-16 11:34:14,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 11:34:16,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121560 states. [2020-10-16 11:34:20,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121560 to 36513. [2020-10-16 11:34:20,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36513 states. [2020-10-16 11:34:20,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36513 states to 36513 states and 195090 transitions. [2020-10-16 11:34:20,451 INFO L78 Accepts]: Start accepts. Automaton has 36513 states and 195090 transitions. Word has length 25 [2020-10-16 11:34:20,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:34:20,451 INFO L481 AbstractCegarLoop]: Abstraction has 36513 states and 195090 transitions. [2020-10-16 11:34:20,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 11:34:20,452 INFO L276 IsEmpty]: Start isEmpty. Operand 36513 states and 195090 transitions. [2020-10-16 11:34:20,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:34:20,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:34:20,455 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:34:20,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:34:20,663 INFO L429 AbstractCegarLoop]: === Iteration 26 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:34:20,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:34:20,663 INFO L82 PathProgramCache]: Analyzing trace with hash 2096074712, now seen corresponding path program 2 times [2020-10-16 11:34:20,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:34:20,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734973605] [2020-10-16 11:34:20,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:34:20,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:34:20,726 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 11:34:20,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734973605] [2020-10-16 11:34:20,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658465726] [2020-10-16 11:34:20,726 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 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 11:34:20,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:34:20,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:34:20,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:34:20,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:34:20,909 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 11:34:20,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:34:20,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 11:34:20,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578184169] [2020-10-16 11:34:20,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 11:34:20,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:34:20,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 11:34:20,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 11:34:20,911 INFO L87 Difference]: Start difference. First operand 36513 states and 195090 transitions. Second operand 16 states. [2020-10-16 11:34:22,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:34:22,418 INFO L93 Difference]: Finished difference Result 120395 states and 548664 transitions. [2020-10-16 11:34:22,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:34:22,419 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-16 11:34:22,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:34:22,752 INFO L225 Difference]: With dead ends: 120395 [2020-10-16 11:34:22,752 INFO L226 Difference]: Without dead ends: 120362 [2020-10-16 11:34:22,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 11:34:23,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120362 states. [2020-10-16 11:34:25,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120362 to 36444. [2020-10-16 11:34:25,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36444 states. [2020-10-16 11:34:26,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36444 states to 36444 states and 194571 transitions. [2020-10-16 11:34:26,004 INFO L78 Accepts]: Start accepts. Automaton has 36444 states and 194571 transitions. Word has length 25 [2020-10-16 11:34:26,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:34:26,004 INFO L481 AbstractCegarLoop]: Abstraction has 36444 states and 194571 transitions. [2020-10-16 11:34:26,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 11:34:26,004 INFO L276 IsEmpty]: Start isEmpty. Operand 36444 states and 194571 transitions. [2020-10-16 11:34:26,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:34:26,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:34:26,007 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:34:26,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-10-16 11:34:26,207 INFO L429 AbstractCegarLoop]: === Iteration 27 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:34:26,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:34:26,208 INFO L82 PathProgramCache]: Analyzing trace with hash 2096063304, now seen corresponding path program 2 times [2020-10-16 11:34:26,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:34:26,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419930756] [2020-10-16 11:34:26,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:34:26,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:34:26,273 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 11:34:26,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419930756] [2020-10-16 11:34:26,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432474468] [2020-10-16 11:34:26,274 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 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 11:34:26,360 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:34:26,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:34:26,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:34:26,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:34:26,468 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 11:34:26,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:34:26,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 11:34:26,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109714857] [2020-10-16 11:34:26,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 11:34:26,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:34:26,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 11:34:26,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 11:34:26,470 INFO L87 Difference]: Start difference. First operand 36444 states and 194571 transitions. Second operand 16 states. [2020-10-16 11:34:28,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:34:28,103 INFO L93 Difference]: Finished difference Result 119346 states and 543724 transitions. [2020-10-16 11:34:28,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:34:28,104 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-16 11:34:28,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:34:29,373 INFO L225 Difference]: With dead ends: 119346 [2020-10-16 11:34:29,374 INFO L226 Difference]: Without dead ends: 119313 [2020-10-16 11:34:29,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 11:34:30,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119313 states. [2020-10-16 11:34:31,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119313 to 36040. [2020-10-16 11:34:31,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36040 states. [2020-10-16 11:34:31,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36040 states to 36040 states and 192287 transitions. [2020-10-16 11:34:31,780 INFO L78 Accepts]: Start accepts. Automaton has 36040 states and 192287 transitions. Word has length 25 [2020-10-16 11:34:31,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:34:31,780 INFO L481 AbstractCegarLoop]: Abstraction has 36040 states and 192287 transitions. [2020-10-16 11:34:31,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 11:34:31,780 INFO L276 IsEmpty]: Start isEmpty. Operand 36040 states and 192287 transitions. [2020-10-16 11:34:31,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:34:31,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:34:31,782 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:34:31,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2020-10-16 11:34:31,983 INFO L429 AbstractCegarLoop]: === Iteration 28 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:34:31,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:34:31,984 INFO L82 PathProgramCache]: Analyzing trace with hash 582269272, now seen corresponding path program 3 times [2020-10-16 11:34:31,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:34:31,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106683267] [2020-10-16 11:34:31,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:34:31,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:34:32,055 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 11:34:32,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106683267] [2020-10-16 11:34:32,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75779168] [2020-10-16 11:34:32,056 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 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 11:34:32,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-16 11:34:32,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:34:32,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:34:32,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:34:32,256 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 11:34:32,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:34:32,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 11:34:32,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095932362] [2020-10-16 11:34:32,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 11:34:32,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:34:32,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 11:34:32,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 11:34:32,258 INFO L87 Difference]: Start difference. First operand 36040 states and 192287 transitions. Second operand 16 states. [2020-10-16 11:34:34,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:34:34,272 INFO L93 Difference]: Finished difference Result 119770 states and 545635 transitions. [2020-10-16 11:34:34,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:34:34,273 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-16 11:34:34,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:34:34,608 INFO L225 Difference]: With dead ends: 119770 [2020-10-16 11:34:34,608 INFO L226 Difference]: Without dead ends: 119740 [2020-10-16 11:34:34,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 11:34:35,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119740 states. [2020-10-16 11:34:40,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119740 to 35471. [2020-10-16 11:34:40,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35471 states. [2020-10-16 11:34:40,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35471 states to 35471 states and 189238 transitions. [2020-10-16 11:34:40,155 INFO L78 Accepts]: Start accepts. Automaton has 35471 states and 189238 transitions. Word has length 25 [2020-10-16 11:34:40,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:34:40,155 INFO L481 AbstractCegarLoop]: Abstraction has 35471 states and 189238 transitions. [2020-10-16 11:34:40,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 11:34:40,155 INFO L276 IsEmpty]: Start isEmpty. Operand 35471 states and 189238 transitions. [2020-10-16 11:34:40,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:34:40,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:34:40,157 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:34:40,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2020-10-16 11:34:40,358 INFO L429 AbstractCegarLoop]: === Iteration 29 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:34:40,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:34:40,359 INFO L82 PathProgramCache]: Analyzing trace with hash 679178599, now seen corresponding path program 1 times [2020-10-16 11:34:40,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:34:40,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430551737] [2020-10-16 11:34:40,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:34:40,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:34:40,425 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:34:40,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430551737] [2020-10-16 11:34:40,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961918188] [2020-10-16 11:34:40,426 INFO L95 rtionOrderModulation]: Keeping assertion order 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 11:34:40,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:34:40,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:34:40,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:34:40,624 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:34:40,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:34:40,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 11:34:40,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417836063] [2020-10-16 11:34:40,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 11:34:40,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:34:40,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 11:34:40,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 11:34:40,626 INFO L87 Difference]: Start difference. First operand 35471 states and 189238 transitions. Second operand 16 states. [2020-10-16 11:34:42,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:34:42,277 INFO L93 Difference]: Finished difference Result 121131 states and 553230 transitions. [2020-10-16 11:34:42,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:34:42,278 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-16 11:34:42,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:34:42,672 INFO L225 Difference]: With dead ends: 121131 [2020-10-16 11:34:42,673 INFO L226 Difference]: Without dead ends: 121101 [2020-10-16 11:34:42,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 11:34:44,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121101 states. [2020-10-16 11:34:45,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121101 to 35374. [2020-10-16 11:34:45,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35374 states. [2020-10-16 11:34:45,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35374 states to 35374 states and 188534 transitions. [2020-10-16 11:34:45,826 INFO L78 Accepts]: Start accepts. Automaton has 35374 states and 188534 transitions. Word has length 25 [2020-10-16 11:34:45,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:34:45,826 INFO L481 AbstractCegarLoop]: Abstraction has 35374 states and 188534 transitions. [2020-10-16 11:34:45,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 11:34:45,826 INFO L276 IsEmpty]: Start isEmpty. Operand 35374 states and 188534 transitions. [2020-10-16 11:34:45,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:34:45,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:34:45,829 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:34:46,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2020-10-16 11:34:46,029 INFO L429 AbstractCegarLoop]: === Iteration 30 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:34:46,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:34:46,030 INFO L82 PathProgramCache]: Analyzing trace with hash -647539609, now seen corresponding path program 2 times [2020-10-16 11:34:46,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:34:46,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874774044] [2020-10-16 11:34:46,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:34:46,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:34:46,094 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 11:34:46,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874774044] [2020-10-16 11:34:46,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547991455] [2020-10-16 11:34:46,095 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 11:34:46,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:34:46,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:34:46,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:34:46,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:34:46,299 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 11:34:46,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:34:46,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 11:34:46,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023453413] [2020-10-16 11:34:46,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 11:34:46,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:34:46,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 11:34:46,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 11:34:46,300 INFO L87 Difference]: Start difference. First operand 35374 states and 188534 transitions. Second operand 16 states. [2020-10-16 11:34:48,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:34:48,705 INFO L93 Difference]: Finished difference Result 120194 states and 548412 transitions. [2020-10-16 11:34:48,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:34:48,706 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-16 11:34:48,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:34:49,072 INFO L225 Difference]: With dead ends: 120194 [2020-10-16 11:34:49,072 INFO L226 Difference]: Without dead ends: 120154 [2020-10-16 11:34:49,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 11:34:50,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120154 states. [2020-10-16 11:34:51,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120154 to 35219. [2020-10-16 11:34:51,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35219 states. [2020-10-16 11:34:51,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35219 states to 35219 states and 187630 transitions. [2020-10-16 11:34:51,490 INFO L78 Accepts]: Start accepts. Automaton has 35219 states and 187630 transitions. Word has length 25 [2020-10-16 11:34:51,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:34:51,491 INFO L481 AbstractCegarLoop]: Abstraction has 35219 states and 187630 transitions. [2020-10-16 11:34:51,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 11:34:51,491 INFO L276 IsEmpty]: Start isEmpty. Operand 35219 states and 187630 transitions. [2020-10-16 11:34:51,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:34:51,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:34:51,493 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:34:51,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:34:51,694 INFO L429 AbstractCegarLoop]: === Iteration 31 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:34:51,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:34:51,694 INFO L82 PathProgramCache]: Analyzing trace with hash -647556008, now seen corresponding path program 4 times [2020-10-16 11:34:51,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:34:51,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042122624] [2020-10-16 11:34:51,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:34:51,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:34:51,761 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 11:34:51,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042122624] [2020-10-16 11:34:51,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674023795] [2020-10-16 11:34:51,761 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 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 11:34:53,854 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 11:34:53,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:34:53,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:34:53,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:34:53,965 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 11:34:53,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:34:53,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 11:34:53,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571941810] [2020-10-16 11:34:53,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 11:34:53,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:34:53,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 11:34:53,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 11:34:53,967 INFO L87 Difference]: Start difference. First operand 35219 states and 187630 transitions. Second operand 16 states. [2020-10-16 11:34:55,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:34:55,537 INFO L93 Difference]: Finished difference Result 118559 states and 539905 transitions. [2020-10-16 11:34:55,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:34:55,537 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-16 11:34:55,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:34:55,869 INFO L225 Difference]: With dead ends: 118559 [2020-10-16 11:34:55,869 INFO L226 Difference]: Without dead ends: 118526 [2020-10-16 11:34:55,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 11:34:57,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118526 states. [2020-10-16 11:34:58,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118526 to 34815. [2020-10-16 11:34:58,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34815 states. [2020-10-16 11:34:58,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34815 states to 34815 states and 185346 transitions. [2020-10-16 11:34:58,777 INFO L78 Accepts]: Start accepts. Automaton has 34815 states and 185346 transitions. Word has length 25 [2020-10-16 11:34:58,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:34:58,778 INFO L481 AbstractCegarLoop]: Abstraction has 34815 states and 185346 transitions. [2020-10-16 11:34:58,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 11:34:58,778 INFO L276 IsEmpty]: Start isEmpty. Operand 34815 states and 185346 transitions. [2020-10-16 11:34:58,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:34:58,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:34:58,780 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:34:58,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2020-10-16 11:34:58,988 INFO L429 AbstractCegarLoop]: === Iteration 32 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:34:58,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:34:58,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1056609241, now seen corresponding path program 3 times [2020-10-16 11:34:58,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:34:58,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054474144] [2020-10-16 11:34:58,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:34:58,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:34:59,054 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:34:59,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054474144] [2020-10-16 11:34:59,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608568842] [2020-10-16 11:34:59,054 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 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 11:34:59,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 11:34:59,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:34:59,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:34:59,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:34:59,244 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:34:59,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:34:59,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 11:34:59,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434899534] [2020-10-16 11:34:59,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 11:34:59,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:34:59,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 11:34:59,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 11:34:59,245 INFO L87 Difference]: Start difference. First operand 34815 states and 185346 transitions. Second operand 16 states. Received shutdown request... [2020-10-16 11:35:00,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:35:00,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2020-10-16 11:35:00,487 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-16 11:35:00,491 WARN L235 ceAbstractionStarter]: Timeout [2020-10-16 11:35:00,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 11:35:00 BasicIcfg [2020-10-16 11:35:00,492 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 11:35:00,493 INFO L168 Benchmark]: Toolchain (without parser) took 233117.44 ms. Allocated memory was 146.8 MB in the beginning and 2.8 GB in the end (delta: 2.7 GB). Free memory was 100.0 MB in the beginning and 1.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2020-10-16 11:35:00,493 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 146.8 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-16 11:35:00,494 INFO L168 Benchmark]: CACSL2BoogieTranslator took 638.42 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 99.8 MB in the beginning and 163.2 MB in the end (delta: -63.4 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2020-10-16 11:35:00,494 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.19 ms. Allocated memory is still 203.9 MB. Free memory was 163.2 MB in the beginning and 161.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 11:35:00,494 INFO L168 Benchmark]: Boogie Preprocessor took 29.23 ms. Allocated memory is still 203.9 MB. Free memory was 161.2 MB in the beginning and 159.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-16 11:35:00,495 INFO L168 Benchmark]: RCFGBuilder took 452.24 ms. Allocated memory is still 203.9 MB. Free memory was 159.9 MB in the beginning and 139.2 MB in the end (delta: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2020-10-16 11:35:00,495 INFO L168 Benchmark]: TraceAbstraction took 231942.12 ms. Allocated memory was 203.9 MB in the beginning and 2.8 GB in the end (delta: 2.6 GB). Free memory was 138.5 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2020-10-16 11:35:00,497 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 146.8 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 638.42 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 99.8 MB in the beginning and 163.2 MB in the end (delta: -63.4 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.19 ms. Allocated memory is still 203.9 MB. Free memory was 163.2 MB in the beginning and 161.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.23 ms. Allocated memory is still 203.9 MB. Free memory was 161.2 MB in the beginning and 159.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 452.24 ms. Allocated memory is still 203.9 MB. Free memory was 159.9 MB in the beginning and 139.2 MB in the end (delta: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 231942.12 ms. Allocated memory was 203.9 MB in the beginning and 2.8 GB in the end (delta: 2.6 GB). Free memory was 138.5 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 362 VarBasedMoverChecksPositive, 3 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 3 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 3 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.7s, 61 PlacesBefore, 18 PlacesAfterwards, 58 TransitionsBefore, 12 TransitionsAfterwards, 592 CoEnabledTransitionPairs, 6 FixpointIterations, 21 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 3 ConcurrentYvCompositions, 3 ChoiceCompositions, 54 TotalNumberOfCompositions, 576 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 568 VarBasedMoverChecksPositive, 11 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 11 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 30 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.5s, 80 PlacesBefore, 31 PlacesAfterwards, 74 TransitionsBefore, 21 TransitionsAfterwards, 920 CoEnabledTransitionPairs, 5 FixpointIterations, 31 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 3 ConcurrentYvCompositions, 4 ChoiceCompositions, 66 TotalNumberOfCompositions, 1122 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 826 VarBasedMoverChecksPositive, 17 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 17 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 50 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.7s, 99 PlacesBefore, 41 PlacesAfterwards, 90 TransitionsBefore, 27 TransitionsAfterwards, 1308 CoEnabledTransitionPairs, 5 FixpointIterations, 39 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 3 ConcurrentYvCompositions, 5 ChoiceCompositions, 79 TotalNumberOfCompositions, 1841 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1012 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 20 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 52 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.1s, 118 PlacesBefore, 51 PlacesAfterwards, 106 TransitionsBefore, 33 TransitionsAfterwards, 1756 CoEnabledTransitionPairs, 6 FixpointIterations, 47 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 4 ConcurrentYvCompositions, 6 ChoiceCompositions, 92 TotalNumberOfCompositions, 2590 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1310 VarBasedMoverChecksPositive, 30 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 78 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.2s, 137 PlacesBefore, 61 PlacesAfterwards, 122 TransitionsBefore, 39 TransitionsAfterwards, 2264 CoEnabledTransitionPairs, 6 FixpointIterations, 61 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 3 ConcurrentYvCompositions, 7 ChoiceCompositions, 111 TotalNumberOfCompositions, 4038 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1797 VarBasedMoverChecksPositive, 34 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 34 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 125 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.5s, 156 PlacesBefore, 71 PlacesAfterwards, 138 TransitionsBefore, 45 TransitionsAfterwards, 2832 CoEnabledTransitionPairs, 5 FixpointIterations, 66 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 4 ConcurrentYvCompositions, 8 ChoiceCompositions, 121 TotalNumberOfCompositions, 4694 MoverChecksTotal - TimeoutResultAtElement [Line: 678]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 678). Cancelled while BasicCegarLoop was constructing difference of abstraction (34815states) and FLOYD_HOARE automaton (currently 29 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (5614 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 55 locations, 1 error locations. Started 6 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 231.5s, OverallIterations: 107, TraceHistogramMax: 6, AutomataDifference: 90.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 14.2s, HoareTripleCheckerStatistics: 4832 SDtfs, 25800 SDslu, 17622 SDs, 0 SdLazy, 33217 SolverSat, 2300 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 26.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2904 GetRequests, 729 SyntacticMatches, 0 SemanticMatches, 2175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14979 ImplicationChecksByTransitivity, 26.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37062occurred in iteration=23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 94.2s AutomataMinimizationTime, 101 MinimizatonAttempts, 2339720 StatesRemovedByMinimization, 94 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 12.2s InterpolantComputationTime, 3145 NumberOfCodeBlocks, 3109 NumberOfCodeBlocksAsserted, 184 NumberOfCheckSat, 2906 ConstructedInterpolants, 0 QuantifiedInterpolants, 392772 SizeOfPredicates, 262 NumberOfNonLiveVariables, 5514 ConjunctsInSsa, 409 ConjunctsInUnsatCore, 151 InterpolantComputations, 53 PerfectInterpolantSequences, 928/1724 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