/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/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf -i ../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-17 14:31:49,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-17 14:31:49,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-17 14:31:50,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-17 14:31:50,015 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-17 14:31:50,025 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-17 14:31:50,029 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-17 14:31:50,033 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-17 14:31:50,036 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-17 14:31:50,041 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-17 14:31:50,042 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-17 14:31:50,043 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-17 14:31:50,043 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-17 14:31:50,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-17 14:31:50,049 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-17 14:31:50,051 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-17 14:31:50,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-17 14:31:50,054 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-17 14:31:50,055 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-17 14:31:50,064 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-17 14:31:50,067 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-17 14:31:50,068 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-17 14:31:50,069 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-17 14:31:50,070 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-17 14:31:50,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-17 14:31:50,095 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-17 14:31:50,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-17 14:31:50,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-17 14:31:50,101 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-17 14:31:50,103 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-17 14:31:50,103 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-17 14:31:50,104 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-17 14:31:50,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-17 14:31:50,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-17 14:31:50,105 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-17 14:31:50,106 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-17 14:31:50,107 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-09-17 14:31:50,133 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-17 14:31:50,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-17 14:31:50,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-17 14:31:50,135 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-17 14:31:50,135 INFO L138 SettingsManager]: * Use SBE=true [2020-09-17 14:31:50,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-17 14:31:50,135 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-17 14:31:50,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-17 14:31:50,136 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-17 14:31:50,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-17 14:31:50,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-17 14:31:50,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-17 14:31:50,136 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-17 14:31:50,137 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-17 14:31:50,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-17 14:31:50,137 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-17 14:31:50,137 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-17 14:31:50,137 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-17 14:31:50,138 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-17 14:31:50,138 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-17 14:31:50,138 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-17 14:31:50,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-17 14:31:50,138 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-17 14:31:50,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-17 14:31:50,139 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-17 14:31:50,139 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-17 14:31:50,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-17 14:31:50,139 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-17 14:31:50,140 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-17 14:31:50,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-17 14:31:50,638 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-17 14:31:50,647 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-17 14:31:50,649 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-17 14:31:50,650 INFO L275 PluginConnector]: CDTParser initialized [2020-09-17 14:31:50,651 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-1.i [2020-09-17 14:31:50,727 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/346e97f72/e5da4cb4f9f94a4783f4a85fabef6bf3/FLAG32e1966a9 [2020-09-17 14:31:51,433 INFO L306 CDTParser]: Found 1 translation units. [2020-09-17 14:31:51,434 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-1.i [2020-09-17 14:31:51,454 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/346e97f72/e5da4cb4f9f94a4783f4a85fabef6bf3/FLAG32e1966a9 [2020-09-17 14:31:51,644 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/346e97f72/e5da4cb4f9f94a4783f4a85fabef6bf3 [2020-09-17 14:31:51,659 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-17 14:31:51,665 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-17 14:31:51,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-17 14:31:51,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-17 14:31:51,673 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-17 14:31:51,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 02:31:51" (1/1) ... [2020-09-17 14:31:51,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e5c076 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:31:51, skipping insertion in model container [2020-09-17 14:31:51,682 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 02:31:51" (1/1) ... [2020-09-17 14:31:51,692 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-17 14:31:51,743 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-17 14:31:52,269 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-17 14:31:52,290 INFO L203 MainTranslator]: Completed pre-run [2020-09-17 14:31:52,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-17 14:31:52,422 INFO L208 MainTranslator]: Completed translation [2020-09-17 14:31:52,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:31:52 WrapperNode [2020-09-17 14:31:52,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-17 14:31:52,424 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-17 14:31:52,424 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-17 14:31:52,424 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-17 14:31:52,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:31:52" (1/1) ... [2020-09-17 14:31:52,457 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:31:52" (1/1) ... [2020-09-17 14:31:52,485 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-17 14:31:52,486 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-17 14:31:52,486 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-17 14:31:52,486 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-17 14:31:52,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:31:52" (1/1) ... [2020-09-17 14:31:52,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:31:52" (1/1) ... [2020-09-17 14:31:52,500 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:31:52" (1/1) ... [2020-09-17 14:31:52,501 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:31:52" (1/1) ... [2020-09-17 14:31:52,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:31:52" (1/1) ... [2020-09-17 14:31:52,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:31:52" (1/1) ... [2020-09-17 14:31:52,517 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:31:52" (1/1) ... [2020-09-17 14:31:52,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-17 14:31:52,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-17 14:31:52,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-17 14:31:52,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-17 14:31:52,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:31:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:31:52,600 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-09-17 14:31:52,600 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-09-17 14:31:52,600 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-09-17 14:31:52,600 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-09-17 14:31:52,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-17 14:31:52,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-17 14:31:52,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-17 14:31:52,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-17 14:31:52,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-17 14:31:52,604 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-17 14:31:52,945 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-17 14:31:52,945 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-09-17 14:31:52,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 02:31:52 BoogieIcfgContainer [2020-09-17 14:31:52,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-17 14:31:52,955 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-17 14:31:52,955 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-17 14:31:52,959 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-17 14:31:52,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 02:31:51" (1/3) ... [2020-09-17 14:31:52,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49614fe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 02:31:52, skipping insertion in model container [2020-09-17 14:31:52,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:31:52" (2/3) ... [2020-09-17 14:31:52,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49614fe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 02:31:52, skipping insertion in model container [2020-09-17 14:31:52,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 02:31:52" (3/3) ... [2020-09-17 14:31:52,964 INFO L109 eAbstractionObserver]: Analyzing ICFG nondet-loop-bound-1.i [2020-09-17 14:31:52,980 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-17 14:31:52,980 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-17 14:31:52,993 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-17 14:31:52,995 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-17 14:31:53,032 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:53,032 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:53,033 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:53,033 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:53,033 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:53,034 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:53,034 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:53,036 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:53,036 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:53,036 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:53,036 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:53,037 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:53,037 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:53,038 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:53,038 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:53,038 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:53,039 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:53,044 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:53,044 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:53,045 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:53,045 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:53,045 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:53,061 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:53,061 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:53,061 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:53,062 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:53,062 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:53,062 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:53,111 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-17 14:31:53,137 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 14:31:53,137 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 14:31:53,138 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-17 14:31:53,138 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 14:31:53,138 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 14:31:53,138 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 14:31:53,138 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 14:31:53,139 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 14:31:53,156 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 58 transitions, 126 flow [2020-09-17 14:31:53,159 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 58 transitions, 126 flow [2020-09-17 14:31:53,211 INFO L129 PetriNetUnfolder]: 4/68 cut-off events. [2020-09-17 14:31:53,212 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-17 14:31:53,219 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. [2020-09-17 14:31:53,223 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 58 transitions, 126 flow [2020-09-17 14:31:53,249 INFO L129 PetriNetUnfolder]: 4/68 cut-off events. [2020-09-17 14:31:53,250 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-17 14:31:53,251 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. [2020-09-17 14:31:53,253 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 592 [2020-09-17 14:31:53,255 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-17 14:31:54,741 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-09-17 14:31:55,030 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-09-17 14:31:55,151 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-09-17 14:31:55,337 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2020-09-17 14:31:55,428 INFO L206 etLargeBlockEncoding]: Checked pairs total: 486 [2020-09-17 14:31:55,429 INFO L214 etLargeBlockEncoding]: Total number of compositions: 51 [2020-09-17 14:31:55,434 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 12 transitions, 34 flow [2020-09-17 14:31:55,447 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-09-17 14:31:55,450 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-17 14:31:55,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-17 14:31:55,459 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:31:55,460 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-17 14:31:55,461 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 14:31:55,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:31:55,469 INFO L82 PathProgramCache]: Analyzing trace with hash 229686, now seen corresponding path program 1 times [2020-09-17 14:31:55,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:31:55,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629708414] [2020-09-17 14:31:55,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:31:55,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:31:55,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:31:55,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629708414] [2020-09-17 14:31:55,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:31:55,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-17 14:31:55,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593191817] [2020-09-17 14:31:55,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 14:31:55,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:31:55,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 14:31:55,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 14:31:55,763 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-09-17 14:31:55,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:31:55,820 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2020-09-17 14:31:55,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 14:31:55,823 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-17 14:31:55,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:31:55,842 INFO L225 Difference]: With dead ends: 35 [2020-09-17 14:31:55,842 INFO L226 Difference]: Without dead ends: 31 [2020-09-17 14:31:55,845 INFO L675 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 [2020-09-17 14:31:55,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-17 14:31:55,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-17 14:31:55,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-17 14:31:55,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 51 transitions. [2020-09-17 14:31:55,916 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 51 transitions. Word has length 3 [2020-09-17 14:31:55,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:31:55,917 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 51 transitions. [2020-09-17 14:31:55,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 14:31:55,917 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2020-09-17 14:31:55,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-09-17 14:31:55,918 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:31:55,919 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:31:55,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-17 14:31:55,920 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 14:31:55,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:31:55,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1647647331, now seen corresponding path program 1 times [2020-09-17 14:31:55,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:31:55,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135215882] [2020-09-17 14:31:55,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:31:55,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:31:56,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:31:56,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135215882] [2020-09-17 14:31:56,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:31:56,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 14:31:56,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391329050] [2020-09-17 14:31:56,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 14:31:56,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:31:56,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 14:31:56,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-17 14:31:56,046 INFO L87 Difference]: Start difference. First operand 31 states and 51 transitions. Second operand 4 states. [2020-09-17 14:31:56,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:31:56,075 INFO L93 Difference]: Finished difference Result 26 states and 42 transitions. [2020-09-17 14:31:56,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-17 14:31:56,076 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-09-17 14:31:56,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:31:56,077 INFO L225 Difference]: With dead ends: 26 [2020-09-17 14:31:56,077 INFO L226 Difference]: Without dead ends: 24 [2020-09-17 14:31:56,078 INFO L675 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 [2020-09-17 14:31:56,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-09-17 14:31:56,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-09-17 14:31:56,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-09-17 14:31:56,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 39 transitions. [2020-09-17 14:31:56,084 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 39 transitions. Word has length 7 [2020-09-17 14:31:56,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:31:56,084 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 39 transitions. [2020-09-17 14:31:56,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 14:31:56,084 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 39 transitions. [2020-09-17 14:31:56,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-17 14:31:56,085 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:31:56,085 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-09-17 14:31:56,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-17 14:31:56,086 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 14:31:56,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:31:56,086 INFO L82 PathProgramCache]: Analyzing trace with hash -462538936, now seen corresponding path program 1 times [2020-09-17 14:31:56,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:31:56,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346343614] [2020-09-17 14:31:56,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:31:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 14:31:56,114 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 14:31:56,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 14:31:56,133 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 14:31:56,166 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-17 14:31:56,166 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-17 14:31:56,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-17 14:31:56,167 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-17 14:31:56,168 WARN L363 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-17 14:31:56,169 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-09-17 14:31:56,178 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,178 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,178 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,179 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,179 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,179 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,179 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,180 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,180 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,180 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,180 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,180 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,180 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,181 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,181 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,182 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,182 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,182 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,182 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,182 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,183 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,183 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,183 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,183 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,184 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,184 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,184 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,184 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,185 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,185 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,185 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,185 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,185 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,186 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,186 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,187 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,187 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,187 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,187 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,191 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,192 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,192 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,192 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,192 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,195 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,195 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,195 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,196 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,196 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,196 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,199 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,199 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,200 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,200 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,200 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,200 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:56,202 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-17 14:31:56,202 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 14:31:56,203 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 14:31:56,203 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-17 14:31:56,203 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 14:31:56,203 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 14:31:56,203 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 14:31:56,203 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 14:31:56,204 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 14:31:56,206 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 74 transitions, 172 flow [2020-09-17 14:31:56,206 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 80 places, 74 transitions, 172 flow [2020-09-17 14:31:56,228 INFO L129 PetriNetUnfolder]: 5/89 cut-off events. [2020-09-17 14:31:56,228 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-09-17 14:31:56,230 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. [2020-09-17 14:31:56,232 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 80 places, 74 transitions, 172 flow [2020-09-17 14:31:56,250 INFO L129 PetriNetUnfolder]: 5/89 cut-off events. [2020-09-17 14:31:56,251 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-09-17 14:31:56,252 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. [2020-09-17 14:31:56,254 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 920 [2020-09-17 14:31:56,254 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-17 14:31:57,752 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2020-09-17 14:31:58,009 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-09-17 14:31:58,185 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-09-17 14:31:58,196 INFO L206 etLargeBlockEncoding]: Checked pairs total: 942 [2020-09-17 14:31:58,196 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2020-09-17 14:31:58,196 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 66 flow [2020-09-17 14:31:58,210 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 224 states. [2020-09-17 14:31:58,210 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states. [2020-09-17 14:31:58,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-17 14:31:58,211 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:31:58,211 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-17 14:31:58,211 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:31:58,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:31:58,212 INFO L82 PathProgramCache]: Analyzing trace with hash 384194, now seen corresponding path program 1 times [2020-09-17 14:31:58,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:31:58,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241406423] [2020-09-17 14:31:58,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:31:58,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:31:58,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:31:58,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241406423] [2020-09-17 14:31:58,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:31:58,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-17 14:31:58,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088057371] [2020-09-17 14:31:58,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 14:31:58,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:31:58,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 14:31:58,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 14:31:58,262 INFO L87 Difference]: Start difference. First operand 224 states. Second operand 3 states. [2020-09-17 14:31:58,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:31:58,316 INFO L93 Difference]: Finished difference Result 185 states and 459 transitions. [2020-09-17 14:31:58,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 14:31:58,317 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-17 14:31:58,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:31:58,322 INFO L225 Difference]: With dead ends: 185 [2020-09-17 14:31:58,323 INFO L226 Difference]: Without dead ends: 171 [2020-09-17 14:31:58,323 INFO L675 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 [2020-09-17 14:31:58,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-09-17 14:31:58,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-09-17 14:31:58,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-09-17 14:31:58,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 418 transitions. [2020-09-17 14:31:58,351 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 418 transitions. Word has length 3 [2020-09-17 14:31:58,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:31:58,351 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 418 transitions. [2020-09-17 14:31:58,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 14:31:58,351 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 418 transitions. [2020-09-17 14:31:58,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-17 14:31:58,352 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:31:58,352 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:31:58,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-17 14:31:58,353 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:31:58,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:31:58,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1694917346, now seen corresponding path program 1 times [2020-09-17 14:31:58,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:31:58,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639486327] [2020-09-17 14:31:58,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:31:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:31:58,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:31:58,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639486327] [2020-09-17 14:31:58,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:31:58,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 14:31:58,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37160710] [2020-09-17 14:31:58,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 14:31:58,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:31:58,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 14:31:58,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 14:31:58,430 INFO L87 Difference]: Start difference. First operand 171 states and 418 transitions. Second operand 5 states. [2020-09-17 14:31:58,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:31:58,559 INFO L93 Difference]: Finished difference Result 205 states and 460 transitions. [2020-09-17 14:31:58,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 14:31:58,562 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-17 14:31:58,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:31:58,564 INFO L225 Difference]: With dead ends: 205 [2020-09-17 14:31:58,565 INFO L226 Difference]: Without dead ends: 201 [2020-09-17 14:31:58,565 INFO L675 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 [2020-09-17 14:31:58,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-09-17 14:31:58,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 162. [2020-09-17 14:31:58,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-17 14:31:58,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 399 transitions. [2020-09-17 14:31:58,586 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 399 transitions. Word has length 9 [2020-09-17 14:31:58,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:31:58,586 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 399 transitions. [2020-09-17 14:31:58,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 14:31:58,586 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 399 transitions. [2020-09-17 14:31:58,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-17 14:31:58,588 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:31:58,588 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:31:58,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-17 14:31:58,588 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:31:58,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:31:58,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1027741454, now seen corresponding path program 1 times [2020-09-17 14:31:58,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:31:58,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992959390] [2020-09-17 14:31:58,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:31:58,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:31:58,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:31:58,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992959390] [2020-09-17 14:31:58,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:31:58,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 14:31:58,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369334061] [2020-09-17 14:31:58,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 14:31:58,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:31:58,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 14:31:58,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 14:31:58,677 INFO L87 Difference]: Start difference. First operand 162 states and 399 transitions. Second operand 5 states. [2020-09-17 14:31:58,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:31:58,789 INFO L93 Difference]: Finished difference Result 189 states and 423 transitions. [2020-09-17 14:31:58,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 14:31:58,790 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-17 14:31:58,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:31:58,793 INFO L225 Difference]: With dead ends: 189 [2020-09-17 14:31:58,794 INFO L226 Difference]: Without dead ends: 185 [2020-09-17 14:31:58,794 INFO L675 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 [2020-09-17 14:31:58,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-09-17 14:31:58,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 153. [2020-09-17 14:31:58,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-09-17 14:31:58,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 367 transitions. [2020-09-17 14:31:58,823 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 367 transitions. Word has length 13 [2020-09-17 14:31:58,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:31:58,828 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 367 transitions. [2020-09-17 14:31:58,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 14:31:58,828 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 367 transitions. [2020-09-17 14:31:58,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-17 14:31:58,833 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:31:58,833 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:31:58,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-17 14:31:58,833 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:31:58,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:31:58,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1792799235, now seen corresponding path program 1 times [2020-09-17 14:31:58,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:31:58,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141227971] [2020-09-17 14:31:58,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:31:58,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 14:31:58,855 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 14:31:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 14:31:58,871 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 14:31:58,879 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-17 14:31:58,879 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-17 14:31:58,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-17 14:31:58,880 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-17 14:31:58,880 WARN L363 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-17 14:31:58,882 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-09-17 14:31:58,893 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,893 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,894 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,894 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,894 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,894 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,894 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,895 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,895 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,895 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,895 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,895 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,895 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,896 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,896 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,896 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,896 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,896 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,897 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,897 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,897 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,897 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,898 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,898 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,898 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,898 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,898 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,899 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,899 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,899 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,899 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,900 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,900 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,900 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,900 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,900 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,900 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,901 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,901 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,901 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,901 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,902 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,902 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,902 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,902 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,902 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,903 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,903 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,903 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,903 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,903 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,904 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,904 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,904 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,904 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,905 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,907 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,907 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,908 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,908 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,908 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,911 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,912 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,912 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,912 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,912 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,914 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,914 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,914 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,914 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,915 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,915 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,916 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,916 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,917 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,917 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,917 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,917 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,918 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,918 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,918 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,919 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,919 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,919 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:31:58,922 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-09-17 14:31:58,922 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 14:31:58,922 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 14:31:58,923 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-17 14:31:58,923 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 14:31:58,923 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 14:31:58,923 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 14:31:58,923 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 14:31:58,923 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 14:31:58,926 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 90 transitions, 222 flow [2020-09-17 14:31:58,926 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 90 transitions, 222 flow [2020-09-17 14:31:58,948 INFO L129 PetriNetUnfolder]: 6/110 cut-off events. [2020-09-17 14:31:58,948 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-09-17 14:31:58,949 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. [2020-09-17 14:31:58,952 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 90 transitions, 222 flow [2020-09-17 14:31:58,972 INFO L129 PetriNetUnfolder]: 6/110 cut-off events. [2020-09-17 14:31:58,973 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-09-17 14:31:58,974 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. [2020-09-17 14:31:58,977 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1308 [2020-09-17 14:31:58,977 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-17 14:32:00,648 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-09-17 14:32:00,971 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-09-17 14:32:01,144 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-09-17 14:32:01,151 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1426 [2020-09-17 14:32:01,151 INFO L214 etLargeBlockEncoding]: Total number of compositions: 74 [2020-09-17 14:32:01,151 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 27 transitions, 96 flow [2020-09-17 14:32:01,179 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 683 states. [2020-09-17 14:32:01,180 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states. [2020-09-17 14:32:01,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-17 14:32:01,180 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:01,181 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-17 14:32:01,181 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:32:01,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:01,181 INFO L82 PathProgramCache]: Analyzing trace with hash 567457, now seen corresponding path program 1 times [2020-09-17 14:32:01,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:01,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132281922] [2020-09-17 14:32:01,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:01,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:32:01,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132281922] [2020-09-17 14:32:01,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:01,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-17 14:32:01,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588543603] [2020-09-17 14:32:01,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 14:32:01,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:01,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 14:32:01,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 14:32:01,226 INFO L87 Difference]: Start difference. First operand 683 states. Second operand 3 states. [2020-09-17 14:32:01,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:01,276 INFO L93 Difference]: Finished difference Result 600 states and 1886 transitions. [2020-09-17 14:32:01,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 14:32:01,277 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-17 14:32:01,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:01,283 INFO L225 Difference]: With dead ends: 600 [2020-09-17 14:32:01,284 INFO L226 Difference]: Without dead ends: 559 [2020-09-17 14:32:01,284 INFO L675 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 [2020-09-17 14:32:01,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-09-17 14:32:01,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2020-09-17 14:32:01,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-09-17 14:32:01,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1737 transitions. [2020-09-17 14:32:01,322 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1737 transitions. Word has length 3 [2020-09-17 14:32:01,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:01,322 INFO L479 AbstractCegarLoop]: Abstraction has 559 states and 1737 transitions. [2020-09-17 14:32:01,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 14:32:01,323 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1737 transitions. [2020-09-17 14:32:01,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-17 14:32:01,323 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:01,324 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:01,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-17 14:32:01,324 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:32:01,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:01,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1052273544, now seen corresponding path program 1 times [2020-09-17 14:32:01,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:01,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134547481] [2020-09-17 14:32:01,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:01,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:01,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:32:01,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134547481] [2020-09-17 14:32:01,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:01,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 14:32:01,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622435580] [2020-09-17 14:32:01,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 14:32:01,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:01,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 14:32:01,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 14:32:01,413 INFO L87 Difference]: Start difference. First operand 559 states and 1737 transitions. Second operand 5 states. [2020-09-17 14:32:01,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:01,531 INFO L93 Difference]: Finished difference Result 817 states and 2317 transitions. [2020-09-17 14:32:01,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 14:32:01,531 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-17 14:32:01,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:01,539 INFO L225 Difference]: With dead ends: 817 [2020-09-17 14:32:01,539 INFO L226 Difference]: Without dead ends: 812 [2020-09-17 14:32:01,540 INFO L675 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 [2020-09-17 14:32:01,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-09-17 14:32:01,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 585. [2020-09-17 14:32:01,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-09-17 14:32:01,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1832 transitions. [2020-09-17 14:32:01,569 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1832 transitions. Word has length 9 [2020-09-17 14:32:01,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:01,570 INFO L479 AbstractCegarLoop]: Abstraction has 585 states and 1832 transitions. [2020-09-17 14:32:01,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 14:32:01,570 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1832 transitions. [2020-09-17 14:32:01,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-17 14:32:01,577 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:01,577 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:01,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-17 14:32:01,578 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:32:01,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:01,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1096280394, now seen corresponding path program 1 times [2020-09-17 14:32:01,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:01,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470292175] [2020-09-17 14:32:01,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:01,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:01,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:32:01,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470292175] [2020-09-17 14:32:01,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:01,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 14:32:01,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021823438] [2020-09-17 14:32:01,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 14:32:01,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:01,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 14:32:01,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 14:32:01,682 INFO L87 Difference]: Start difference. First operand 585 states and 1832 transitions. Second operand 5 states. [2020-09-17 14:32:01,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:01,795 INFO L93 Difference]: Finished difference Result 843 states and 2406 transitions. [2020-09-17 14:32:01,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 14:32:01,796 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-17 14:32:01,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:01,803 INFO L225 Difference]: With dead ends: 843 [2020-09-17 14:32:01,803 INFO L226 Difference]: Without dead ends: 836 [2020-09-17 14:32:01,803 INFO L675 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 [2020-09-17 14:32:01,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-09-17 14:32:01,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 611. [2020-09-17 14:32:01,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-09-17 14:32:01,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1906 transitions. [2020-09-17 14:32:01,831 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1906 transitions. Word has length 13 [2020-09-17 14:32:01,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:01,831 INFO L479 AbstractCegarLoop]: Abstraction has 611 states and 1906 transitions. [2020-09-17 14:32:01,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 14:32:01,832 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1906 transitions. [2020-09-17 14:32:01,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 14:32:01,833 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:01,833 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:01,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-17 14:32:01,833 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:32:01,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:01,834 INFO L82 PathProgramCache]: Analyzing trace with hash 2044985054, now seen corresponding path program 1 times [2020-09-17 14:32:01,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:01,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978472343] [2020-09-17 14:32:01,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:01,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:32:01,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978472343] [2020-09-17 14:32:01,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035201770] [2020-09-17 14:32:01,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:32:02,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:02,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 14:32:02,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:32:02,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:32:02,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:32:02,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 14:32:02,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507724807] [2020-09-17 14:32:02,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 14:32:02,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:02,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 14:32:02,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 14:32:02,162 INFO L87 Difference]: Start difference. First operand 611 states and 1906 transitions. Second operand 12 states. [2020-09-17 14:32:02,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:02,508 INFO L93 Difference]: Finished difference Result 1059 states and 2818 transitions. [2020-09-17 14:32:02,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:32:02,513 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-09-17 14:32:02,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:02,523 INFO L225 Difference]: With dead ends: 1059 [2020-09-17 14:32:02,523 INFO L226 Difference]: Without dead ends: 1052 [2020-09-17 14:32:02,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:32:02,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-09-17 14:32:02,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 591. [2020-09-17 14:32:02,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-09-17 14:32:02,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1840 transitions. [2020-09-17 14:32:02,560 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1840 transitions. Word has length 15 [2020-09-17 14:32:02,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:02,560 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 1840 transitions. [2020-09-17 14:32:02,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 14:32:02,561 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1840 transitions. [2020-09-17 14:32:02,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 14:32:02,562 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:02,562 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:02,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-09-17 14:32:02,776 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:32:02,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:02,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1258473782, now seen corresponding path program 2 times [2020-09-17 14:32:02,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:02,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226996543] [2020-09-17 14:32:02,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:02,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:02,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:32:02,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226996543] [2020-09-17 14:32:02,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:02,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 14:32:02,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289563650] [2020-09-17 14:32:02,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 14:32:02,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:02,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 14:32:02,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:32:02,895 INFO L87 Difference]: Start difference. First operand 591 states and 1840 transitions. Second operand 7 states. [2020-09-17 14:32:03,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:03,220 INFO L93 Difference]: Finished difference Result 1053 states and 2807 transitions. [2020-09-17 14:32:03,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:32:03,221 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-17 14:32:03,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:03,229 INFO L225 Difference]: With dead ends: 1053 [2020-09-17 14:32:03,229 INFO L226 Difference]: Without dead ends: 1045 [2020-09-17 14:32:03,230 INFO L675 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 [2020-09-17 14:32:03,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-09-17 14:32:03,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 536. [2020-09-17 14:32:03,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-09-17 14:32:03,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1688 transitions. [2020-09-17 14:32:03,257 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1688 transitions. Word has length 15 [2020-09-17 14:32:03,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:03,257 INFO L479 AbstractCegarLoop]: Abstraction has 536 states and 1688 transitions. [2020-09-17 14:32:03,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 14:32:03,258 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1688 transitions. [2020-09-17 14:32:03,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-17 14:32:03,259 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:03,259 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:03,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-17 14:32:03,259 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:32:03,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:03,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1734594488, now seen corresponding path program 1 times [2020-09-17 14:32:03,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:03,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044904068] [2020-09-17 14:32:03,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:03,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:03,346 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:32:03,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044904068] [2020-09-17 14:32:03,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:03,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 14:32:03,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140365641] [2020-09-17 14:32:03,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 14:32:03,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:03,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 14:32:03,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 14:32:03,348 INFO L87 Difference]: Start difference. First operand 536 states and 1688 transitions. Second operand 5 states. [2020-09-17 14:32:03,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:03,452 INFO L93 Difference]: Finished difference Result 736 states and 2123 transitions. [2020-09-17 14:32:03,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 14:32:03,453 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-17 14:32:03,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:03,459 INFO L225 Difference]: With dead ends: 736 [2020-09-17 14:32:03,459 INFO L226 Difference]: Without dead ends: 728 [2020-09-17 14:32:03,459 INFO L675 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 [2020-09-17 14:32:03,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-09-17 14:32:03,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 549. [2020-09-17 14:32:03,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-09-17 14:32:03,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 1684 transitions. [2020-09-17 14:32:03,481 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 1684 transitions. Word has length 17 [2020-09-17 14:32:03,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:03,481 INFO L479 AbstractCegarLoop]: Abstraction has 549 states and 1684 transitions. [2020-09-17 14:32:03,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 14:32:03,481 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 1684 transitions. [2020-09-17 14:32:03,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-17 14:32:03,483 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:03,483 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:03,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-17 14:32:03,483 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:32:03,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:03,484 INFO L82 PathProgramCache]: Analyzing trace with hash -2065233823, now seen corresponding path program 1 times [2020-09-17 14:32:03,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:03,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417445423] [2020-09-17 14:32:03,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:03,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 14:32:03,499 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 14:32:03,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 14:32:03,513 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 14:32:03,521 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-17 14:32:03,522 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-17 14:32:03,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-17 14:32:03,522 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-17 14:32:03,523 WARN L363 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-17 14:32:03,523 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-09-17 14:32:03,536 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,536 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,537 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,537 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,537 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,537 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,538 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,538 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,538 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,538 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,538 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,538 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,539 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,539 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,539 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,539 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,539 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,539 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,540 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,540 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,540 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,540 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,540 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,540 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,541 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,541 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,541 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,541 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,541 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,542 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,542 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,542 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,542 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,542 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,542 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,543 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,543 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,543 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,543 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,543 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,543 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,544 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,544 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,544 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,544 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,544 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,544 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,545 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,545 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,545 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,545 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,545 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,546 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,546 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,546 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,546 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,546 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,546 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,547 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,547 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,547 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,547 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,547 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,547 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,548 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,548 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,548 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,548 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,549 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,549 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,549 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,549 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,549 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,551 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,551 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,552 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,552 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,552 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,553 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,554 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,554 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,554 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,554 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,556 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,556 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,556 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,556 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,557 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,558 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,558 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,558 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,559 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,559 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,559 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,560 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,560 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,561 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,561 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,561 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,561 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,562 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,563 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,563 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,563 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,563 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,563 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,565 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,565 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,565 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,565 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,566 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,566 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:03,567 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-09-17 14:32:03,568 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 14:32:03,568 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 14:32:03,568 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-17 14:32:03,568 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 14:32:03,568 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 14:32:03,568 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 14:32:03,568 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 14:32:03,568 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 14:32:03,570 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 106 transitions, 276 flow [2020-09-17 14:32:03,570 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 106 transitions, 276 flow [2020-09-17 14:32:03,590 INFO L129 PetriNetUnfolder]: 7/131 cut-off events. [2020-09-17 14:32:03,590 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-09-17 14:32:03,592 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. [2020-09-17 14:32:03,596 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 106 transitions, 276 flow [2020-09-17 14:32:03,611 INFO L129 PetriNetUnfolder]: 7/131 cut-off events. [2020-09-17 14:32:03,611 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-09-17 14:32:03,613 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. [2020-09-17 14:32:03,617 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1756 [2020-09-17 14:32:03,617 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-17 14:32:05,398 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-09-17 14:32:05,504 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-09-17 14:32:05,741 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-09-17 14:32:05,973 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-09-17 14:32:06,086 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2033 [2020-09-17 14:32:06,086 INFO L214 etLargeBlockEncoding]: Total number of compositions: 86 [2020-09-17 14:32:06,087 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 33 transitions, 130 flow [2020-09-17 14:32:06,208 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2060 states. [2020-09-17 14:32:06,208 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states. [2020-09-17 14:32:06,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-17 14:32:06,208 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:06,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-17 14:32:06,209 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 14:32:06,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:06,209 INFO L82 PathProgramCache]: Analyzing trace with hash 779528, now seen corresponding path program 1 times [2020-09-17 14:32:06,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:06,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728177261] [2020-09-17 14:32:06,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:06,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:06,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:32:06,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728177261] [2020-09-17 14:32:06,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:06,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-17 14:32:06,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174401005] [2020-09-17 14:32:06,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 14:32:06,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:06,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 14:32:06,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 14:32:06,242 INFO L87 Difference]: Start difference. First operand 2060 states. Second operand 3 states. [2020-09-17 14:32:06,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:06,297 INFO L93 Difference]: Finished difference Result 1889 states and 7217 transitions. [2020-09-17 14:32:06,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 14:32:06,297 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-17 14:32:06,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:06,314 INFO L225 Difference]: With dead ends: 1889 [2020-09-17 14:32:06,314 INFO L226 Difference]: Without dead ends: 1767 [2020-09-17 14:32:06,315 INFO L675 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 [2020-09-17 14:32:06,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-09-17 14:32:06,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1767. [2020-09-17 14:32:06,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2020-09-17 14:32:06,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 6690 transitions. [2020-09-17 14:32:06,402 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 6690 transitions. Word has length 3 [2020-09-17 14:32:06,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:06,402 INFO L479 AbstractCegarLoop]: Abstraction has 1767 states and 6690 transitions. [2020-09-17 14:32:06,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 14:32:06,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 6690 transitions. [2020-09-17 14:32:06,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-17 14:32:06,403 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:06,403 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:06,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-17 14:32:06,403 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 14:32:06,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:06,404 INFO L82 PathProgramCache]: Analyzing trace with hash -666106918, now seen corresponding path program 1 times [2020-09-17 14:32:06,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:06,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927358430] [2020-09-17 14:32:06,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:06,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:32:06,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927358430] [2020-09-17 14:32:06,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:06,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 14:32:06,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408262100] [2020-09-17 14:32:06,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 14:32:06,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:06,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 14:32:06,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 14:32:06,460 INFO L87 Difference]: Start difference. First operand 1767 states and 6690 transitions. Second operand 5 states. [2020-09-17 14:32:06,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:06,588 INFO L93 Difference]: Finished difference Result 2905 states and 10138 transitions. [2020-09-17 14:32:06,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 14:32:06,589 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-17 14:32:06,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:06,623 INFO L225 Difference]: With dead ends: 2905 [2020-09-17 14:32:06,623 INFO L226 Difference]: Without dead ends: 2899 [2020-09-17 14:32:06,625 INFO L675 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 [2020-09-17 14:32:06,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-09-17 14:32:06,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1966. [2020-09-17 14:32:06,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1966 states. [2020-09-17 14:32:06,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 7503 transitions. [2020-09-17 14:32:06,763 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 7503 transitions. Word has length 9 [2020-09-17 14:32:06,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:06,764 INFO L479 AbstractCegarLoop]: Abstraction has 1966 states and 7503 transitions. [2020-09-17 14:32:06,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 14:32:06,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 7503 transitions. [2020-09-17 14:32:06,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-17 14:32:06,765 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:06,765 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:06,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-17 14:32:06,766 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 14:32:06,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:06,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1766896000, now seen corresponding path program 1 times [2020-09-17 14:32:06,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:06,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839360056] [2020-09-17 14:32:06,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:06,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:06,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:32:06,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839360056] [2020-09-17 14:32:06,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:06,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 14:32:06,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179554767] [2020-09-17 14:32:06,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 14:32:06,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:06,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 14:32:06,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 14:32:06,852 INFO L87 Difference]: Start difference. First operand 1966 states and 7503 transitions. Second operand 5 states. [2020-09-17 14:32:07,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:07,011 INFO L93 Difference]: Finished difference Result 3204 states and 11312 transitions. [2020-09-17 14:32:07,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 14:32:07,012 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-17 14:32:07,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:07,056 INFO L225 Difference]: With dead ends: 3204 [2020-09-17 14:32:07,057 INFO L226 Difference]: Without dead ends: 3194 [2020-09-17 14:32:07,057 INFO L675 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 [2020-09-17 14:32:07,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2020-09-17 14:32:07,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 2200. [2020-09-17 14:32:07,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-09-17 14:32:07,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 8453 transitions. [2020-09-17 14:32:07,286 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 8453 transitions. Word has length 13 [2020-09-17 14:32:07,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:07,288 INFO L479 AbstractCegarLoop]: Abstraction has 2200 states and 8453 transitions. [2020-09-17 14:32:07,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 14:32:07,289 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 8453 transitions. [2020-09-17 14:32:07,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 14:32:07,290 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:07,290 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:07,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-17 14:32:07,291 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 14:32:07,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:07,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1022394712, now seen corresponding path program 1 times [2020-09-17 14:32:07,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:07,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589312019] [2020-09-17 14:32:07,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:07,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:32:07,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589312019] [2020-09-17 14:32:07,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918020990] [2020-09-17 14:32:07,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:32:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:07,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 14:32:07,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:32:07,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:32:07,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:32:07,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 14:32:07,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844717145] [2020-09-17 14:32:07,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 14:32:07,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:07,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 14:32:07,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 14:32:07,524 INFO L87 Difference]: Start difference. First operand 2200 states and 8453 transitions. Second operand 12 states. [2020-09-17 14:32:07,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:07,879 INFO L93 Difference]: Finished difference Result 4556 states and 14911 transitions. [2020-09-17 14:32:07,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:32:07,880 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-09-17 14:32:07,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:07,906 INFO L225 Difference]: With dead ends: 4556 [2020-09-17 14:32:07,906 INFO L226 Difference]: Without dead ends: 4546 [2020-09-17 14:32:07,907 INFO L675 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 [2020-09-17 14:32:07,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4546 states. [2020-09-17 14:32:08,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4546 to 2157. [2020-09-17 14:32:08,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2157 states. [2020-09-17 14:32:08,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 8278 transitions. [2020-09-17 14:32:08,044 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 8278 transitions. Word has length 15 [2020-09-17 14:32:08,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:08,044 INFO L479 AbstractCegarLoop]: Abstraction has 2157 states and 8278 transitions. [2020-09-17 14:32:08,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 14:32:08,045 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 8278 transitions. [2020-09-17 14:32:08,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 14:32:08,045 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:08,046 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:08,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-09-17 14:32:08,260 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 14:32:08,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:08,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1474969304, now seen corresponding path program 2 times [2020-09-17 14:32:08,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:08,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343519336] [2020-09-17 14:32:08,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:08,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:08,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:32:08,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343519336] [2020-09-17 14:32:08,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:08,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 14:32:08,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777240204] [2020-09-17 14:32:08,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 14:32:08,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:08,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 14:32:08,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:32:08,346 INFO L87 Difference]: Start difference. First operand 2157 states and 8278 transitions. Second operand 7 states. [2020-09-17 14:32:08,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:08,672 INFO L93 Difference]: Finished difference Result 4612 states and 15111 transitions. [2020-09-17 14:32:08,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:32:08,673 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-17 14:32:08,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:08,692 INFO L225 Difference]: With dead ends: 4612 [2020-09-17 14:32:08,692 INFO L226 Difference]: Without dead ends: 4601 [2020-09-17 14:32:08,692 INFO L675 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 [2020-09-17 14:32:08,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2020-09-17 14:32:08,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 2035. [2020-09-17 14:32:08,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2035 states. [2020-09-17 14:32:08,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 7845 transitions. [2020-09-17 14:32:08,898 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 7845 transitions. Word has length 15 [2020-09-17 14:32:08,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:08,898 INFO L479 AbstractCegarLoop]: Abstraction has 2035 states and 7845 transitions. [2020-09-17 14:32:08,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 14:32:08,899 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 7845 transitions. [2020-09-17 14:32:08,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-17 14:32:08,899 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:08,900 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:08,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-17 14:32:08,900 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 14:32:08,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:08,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1278978660, now seen corresponding path program 1 times [2020-09-17 14:32:08,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:08,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433566858] [2020-09-17 14:32:08,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:08,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:08,975 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:32:08,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433566858] [2020-09-17 14:32:08,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:08,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 14:32:08,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885511031] [2020-09-17 14:32:08,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 14:32:08,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:08,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 14:32:08,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 14:32:08,977 INFO L87 Difference]: Start difference. First operand 2035 states and 7845 transitions. Second operand 5 states. [2020-09-17 14:32:09,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:09,125 INFO L93 Difference]: Finished difference Result 3265 states and 11681 transitions. [2020-09-17 14:32:09,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 14:32:09,126 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-17 14:32:09,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:09,140 INFO L225 Difference]: With dead ends: 3265 [2020-09-17 14:32:09,140 INFO L226 Difference]: Without dead ends: 3250 [2020-09-17 14:32:09,141 INFO L675 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 [2020-09-17 14:32:09,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2020-09-17 14:32:09,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 2281. [2020-09-17 14:32:09,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2020-09-17 14:32:09,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 8755 transitions. [2020-09-17 14:32:09,246 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 8755 transitions. Word has length 17 [2020-09-17 14:32:09,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:09,247 INFO L479 AbstractCegarLoop]: Abstraction has 2281 states and 8755 transitions. [2020-09-17 14:32:09,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 14:32:09,247 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 8755 transitions. [2020-09-17 14:32:09,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 14:32:09,249 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:09,249 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:09,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-17 14:32:09,249 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 14:32:09,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:09,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1455436228, now seen corresponding path program 1 times [2020-09-17 14:32:09,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:09,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216166893] [2020-09-17 14:32:09,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:09,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:09,336 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 14:32:09,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216166893] [2020-09-17 14:32:09,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928986634] [2020-09-17 14:32:09,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:32:09,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:09,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 14:32:09,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:32:09,519 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 14:32:09,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:32:09,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 14:32:09,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285624297] [2020-09-17 14:32:09,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 14:32:09,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:09,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 14:32:09,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 14:32:09,521 INFO L87 Difference]: Start difference. First operand 2281 states and 8755 transitions. Second operand 12 states. [2020-09-17 14:32:10,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:10,007 INFO L93 Difference]: Finished difference Result 4825 states and 15986 transitions. [2020-09-17 14:32:10,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:32:10,007 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-17 14:32:10,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:10,026 INFO L225 Difference]: With dead ends: 4825 [2020-09-17 14:32:10,026 INFO L226 Difference]: Without dead ends: 4813 [2020-09-17 14:32:10,027 INFO L675 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 [2020-09-17 14:32:10,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4813 states. [2020-09-17 14:32:10,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4813 to 2305. [2020-09-17 14:32:10,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-09-17 14:32:10,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 8815 transitions. [2020-09-17 14:32:10,143 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 8815 transitions. Word has length 19 [2020-09-17 14:32:10,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:10,144 INFO L479 AbstractCegarLoop]: Abstraction has 2305 states and 8815 transitions. [2020-09-17 14:32:10,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 14:32:10,144 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 8815 transitions. [2020-09-17 14:32:10,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 14:32:10,146 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:10,146 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:10,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:32:10,359 INFO L427 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 14:32:10,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:10,360 INFO L82 PathProgramCache]: Analyzing trace with hash -979473248, now seen corresponding path program 1 times [2020-09-17 14:32:10,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:10,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027976278] [2020-09-17 14:32:10,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:10,446 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:32:10,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027976278] [2020-09-17 14:32:10,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089223785] [2020-09-17 14:32:10,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:32:10,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:10,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 14:32:10,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:32:10,675 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:32:10,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:32:10,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 14:32:10,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464679580] [2020-09-17 14:32:10,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 14:32:10,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:10,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 14:32:10,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 14:32:10,678 INFO L87 Difference]: Start difference. First operand 2305 states and 8815 transitions. Second operand 12 states. [2020-09-17 14:32:11,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:11,119 INFO L93 Difference]: Finished difference Result 4942 states and 16410 transitions. [2020-09-17 14:32:11,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:32:11,120 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-17 14:32:11,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:11,140 INFO L225 Difference]: With dead ends: 4942 [2020-09-17 14:32:11,140 INFO L226 Difference]: Without dead ends: 4925 [2020-09-17 14:32:11,140 INFO L675 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 [2020-09-17 14:32:11,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4925 states. [2020-09-17 14:32:11,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4925 to 2299. [2020-09-17 14:32:11,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2299 states. [2020-09-17 14:32:11,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 8782 transitions. [2020-09-17 14:32:11,248 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 8782 transitions. Word has length 19 [2020-09-17 14:32:11,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:11,249 INFO L479 AbstractCegarLoop]: Abstraction has 2299 states and 8782 transitions. [2020-09-17 14:32:11,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 14:32:11,249 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 8782 transitions. [2020-09-17 14:32:11,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 14:32:11,250 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:11,250 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:11,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:32:11,466 INFO L427 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 14:32:11,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:11,466 INFO L82 PathProgramCache]: Analyzing trace with hash -737855584, now seen corresponding path program 2 times [2020-09-17 14:32:11,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:11,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805335305] [2020-09-17 14:32:11,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:11,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:11,557 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:32:11,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805335305] [2020-09-17 14:32:11,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:11,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 14:32:11,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054317248] [2020-09-17 14:32:11,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 14:32:11,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:11,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 14:32:11,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:32:11,559 INFO L87 Difference]: Start difference. First operand 2299 states and 8782 transitions. Second operand 7 states. [2020-09-17 14:32:11,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:11,880 INFO L93 Difference]: Finished difference Result 4934 states and 16393 transitions. [2020-09-17 14:32:11,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:32:11,881 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-17 14:32:11,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:11,899 INFO L225 Difference]: With dead ends: 4934 [2020-09-17 14:32:11,899 INFO L226 Difference]: Without dead ends: 4917 [2020-09-17 14:32:11,900 INFO L675 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 [2020-09-17 14:32:11,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4917 states. [2020-09-17 14:32:11,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4917 to 2216. [2020-09-17 14:32:11,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2216 states. [2020-09-17 14:32:12,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 8477 transitions. [2020-09-17 14:32:12,008 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 8477 transitions. Word has length 19 [2020-09-17 14:32:12,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:12,009 INFO L479 AbstractCegarLoop]: Abstraction has 2216 states and 8477 transitions. [2020-09-17 14:32:12,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 14:32:12,010 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 8477 transitions. [2020-09-17 14:32:12,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 14:32:12,011 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:12,011 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:12,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-17 14:32:12,011 INFO L427 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 14:32:12,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:12,012 INFO L82 PathProgramCache]: Analyzing trace with hash -737840828, now seen corresponding path program 2 times [2020-09-17 14:32:12,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:12,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053076192] [2020-09-17 14:32:12,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:12,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:12,105 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:32:12,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053076192] [2020-09-17 14:32:12,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:12,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 14:32:12,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105591366] [2020-09-17 14:32:12,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 14:32:12,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:12,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 14:32:12,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:32:12,108 INFO L87 Difference]: Start difference. First operand 2216 states and 8477 transitions. Second operand 7 states. [2020-09-17 14:32:12,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:12,439 INFO L93 Difference]: Finished difference Result 4774 states and 15828 transitions. [2020-09-17 14:32:12,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:32:12,439 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-17 14:32:12,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:12,457 INFO L225 Difference]: With dead ends: 4774 [2020-09-17 14:32:12,458 INFO L226 Difference]: Without dead ends: 4757 [2020-09-17 14:32:12,458 INFO L675 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 [2020-09-17 14:32:12,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2020-09-17 14:32:12,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 2150. [2020-09-17 14:32:12,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2150 states. [2020-09-17 14:32:12,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 8243 transitions. [2020-09-17 14:32:12,702 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 8243 transitions. Word has length 19 [2020-09-17 14:32:12,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:12,702 INFO L479 AbstractCegarLoop]: Abstraction has 2150 states and 8243 transitions. [2020-09-17 14:32:12,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 14:32:12,702 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 8243 transitions. [2020-09-17 14:32:12,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 14:32:12,704 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:12,704 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:12,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-17 14:32:12,705 INFO L427 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 14:32:12,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:12,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1726751032, now seen corresponding path program 1 times [2020-09-17 14:32:12,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:12,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230200674] [2020-09-17 14:32:12,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:12,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:12,814 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:32:12,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230200674] [2020-09-17 14:32:12,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043583099] [2020-09-17 14:32:12,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:32:12,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:12,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:32:12,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:32:13,081 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:32:13,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:32:13,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:32:13,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171420854] [2020-09-17 14:32:13,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:32:13,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:13,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:32:13,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:32:13,084 INFO L87 Difference]: Start difference. First operand 2150 states and 8243 transitions. Second operand 16 states. [2020-09-17 14:32:14,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:14,069 INFO L93 Difference]: Finished difference Result 6025 states and 18746 transitions. [2020-09-17 14:32:14,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:32:14,069 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 14:32:14,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:14,083 INFO L225 Difference]: With dead ends: 6025 [2020-09-17 14:32:14,083 INFO L226 Difference]: Without dead ends: 6017 [2020-09-17 14:32:14,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:32:14,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6017 states. [2020-09-17 14:32:14,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6017 to 2117. [2020-09-17 14:32:14,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2117 states. [2020-09-17 14:32:14,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 8106 transitions. [2020-09-17 14:32:14,198 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 8106 transitions. Word has length 21 [2020-09-17 14:32:14,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:14,198 INFO L479 AbstractCegarLoop]: Abstraction has 2117 states and 8106 transitions. [2020-09-17 14:32:14,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:32:14,199 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 8106 transitions. [2020-09-17 14:32:14,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 14:32:14,200 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:14,200 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:14,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-09-17 14:32:14,414 INFO L427 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 14:32:14,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:14,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1485133368, now seen corresponding path program 2 times [2020-09-17 14:32:14,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:14,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109992124] [2020-09-17 14:32:14,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:14,522 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 14:32:14,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109992124] [2020-09-17 14:32:14,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640091262] [2020-09-17 14:32:14,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:32:14,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 14:32:14,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:32:14,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:32:14,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:32:14,711 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 14:32:14,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:32:14,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:32:14,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048689754] [2020-09-17 14:32:14,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:32:14,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:14,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:32:14,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:32:14,713 INFO L87 Difference]: Start difference. First operand 2117 states and 8106 transitions. Second operand 16 states. [2020-09-17 14:32:15,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:15,756 INFO L93 Difference]: Finished difference Result 5914 states and 18384 transitions. [2020-09-17 14:32:15,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:32:15,757 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 14:32:15,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:15,769 INFO L225 Difference]: With dead ends: 5914 [2020-09-17 14:32:15,769 INFO L226 Difference]: Without dead ends: 5903 [2020-09-17 14:32:15,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:32:15,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5903 states. [2020-09-17 14:32:15,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5903 to 2085. [2020-09-17 14:32:15,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2085 states. [2020-09-17 14:32:15,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 7975 transitions. [2020-09-17 14:32:15,875 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 7975 transitions. Word has length 21 [2020-09-17 14:32:15,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:15,875 INFO L479 AbstractCegarLoop]: Abstraction has 2085 states and 7975 transitions. [2020-09-17 14:32:15,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:32:15,875 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 7975 transitions. [2020-09-17 14:32:15,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 14:32:15,877 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:15,878 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:16,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:32:16,092 INFO L427 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 14:32:16,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:16,093 INFO L82 PathProgramCache]: Analyzing trace with hash -268549816, now seen corresponding path program 3 times [2020-09-17 14:32:16,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:16,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209502898] [2020-09-17 14:32:16,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:16,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:16,196 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:32:16,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209502898] [2020-09-17 14:32:16,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578263400] [2020-09-17 14:32:16,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:32:16,268 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-17 14:32:16,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:32:16,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:32:16,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:32:16,408 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:32:16,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:32:16,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:32:16,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196207571] [2020-09-17 14:32:16,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:32:16,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:16,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:32:16,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:32:16,411 INFO L87 Difference]: Start difference. First operand 2085 states and 7975 transitions. Second operand 16 states. [2020-09-17 14:32:17,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:17,351 INFO L93 Difference]: Finished difference Result 5907 states and 18375 transitions. [2020-09-17 14:32:17,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:32:17,352 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 14:32:17,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:17,363 INFO L225 Difference]: With dead ends: 5907 [2020-09-17 14:32:17,363 INFO L226 Difference]: Without dead ends: 5899 [2020-09-17 14:32:17,364 INFO L675 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 [2020-09-17 14:32:17,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5899 states. [2020-09-17 14:32:17,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5899 to 2008. [2020-09-17 14:32:17,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2008 states. [2020-09-17 14:32:17,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 7698 transitions. [2020-09-17 14:32:17,453 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 7698 transitions. Word has length 21 [2020-09-17 14:32:17,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:17,454 INFO L479 AbstractCegarLoop]: Abstraction has 2008 states and 7698 transitions. [2020-09-17 14:32:17,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:32:17,454 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 7698 transitions. [2020-09-17 14:32:17,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 14:32:17,456 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:17,457 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:17,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-09-17 14:32:17,672 INFO L427 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 14:32:17,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:17,672 INFO L82 PathProgramCache]: Analyzing trace with hash -675948728, now seen corresponding path program 4 times [2020-09-17 14:32:17,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:17,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141450337] [2020-09-17 14:32:17,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:17,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:17,771 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:32:17,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141450337] [2020-09-17 14:32:17,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452230106] [2020-09-17 14:32:17,772 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:32:17,940 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 14:32:17,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:32:17,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:32:17,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:32:18,066 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:32:18,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:32:18,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:32:18,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293037325] [2020-09-17 14:32:18,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:32:18,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:18,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:32:18,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:32:18,068 INFO L87 Difference]: Start difference. First operand 2008 states and 7698 transitions. Second operand 16 states. [2020-09-17 14:32:19,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:19,061 INFO L93 Difference]: Finished difference Result 5835 states and 18155 transitions. [2020-09-17 14:32:19,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:32:19,062 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 14:32:19,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:19,072 INFO L225 Difference]: With dead ends: 5835 [2020-09-17 14:32:19,072 INFO L226 Difference]: Without dead ends: 5824 [2020-09-17 14:32:19,073 INFO L675 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 [2020-09-17 14:32:19,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5824 states. [2020-09-17 14:32:19,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5824 to 1976. [2020-09-17 14:32:19,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1976 states. [2020-09-17 14:32:19,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 7567 transitions. [2020-09-17 14:32:19,141 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 7567 transitions. Word has length 21 [2020-09-17 14:32:19,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:19,141 INFO L479 AbstractCegarLoop]: Abstraction has 1976 states and 7567 transitions. [2020-09-17 14:32:19,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:32:19,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 7567 transitions. [2020-09-17 14:32:19,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 14:32:19,143 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:19,143 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:19,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-09-17 14:32:19,355 INFO L427 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 14:32:19,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:19,355 INFO L82 PathProgramCache]: Analyzing trace with hash -409607608, now seen corresponding path program 5 times [2020-09-17 14:32:19,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:19,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237830669] [2020-09-17 14:32:19,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:19,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:19,459 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:32:19,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237830669] [2020-09-17 14:32:19,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:19,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 14:32:19,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892904798] [2020-09-17 14:32:19,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 14:32:19,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:19,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 14:32:19,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 14:32:19,461 INFO L87 Difference]: Start difference. First operand 1976 states and 7567 transitions. Second operand 9 states. [2020-09-17 14:32:20,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:20,306 INFO L93 Difference]: Finished difference Result 5820 states and 18126 transitions. [2020-09-17 14:32:20,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:32:20,307 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-17 14:32:20,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:20,319 INFO L225 Difference]: With dead ends: 5820 [2020-09-17 14:32:20,319 INFO L226 Difference]: Without dead ends: 5812 [2020-09-17 14:32:20,320 INFO L675 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 [2020-09-17 14:32:20,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5812 states. [2020-09-17 14:32:20,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5812 to 1907. [2020-09-17 14:32:20,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1907 states. [2020-09-17 14:32:20,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 7310 transitions. [2020-09-17 14:32:20,391 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 7310 transitions. Word has length 21 [2020-09-17 14:32:20,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:20,391 INFO L479 AbstractCegarLoop]: Abstraction has 1907 states and 7310 transitions. [2020-09-17 14:32:20,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 14:32:20,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 7310 transitions. [2020-09-17 14:32:20,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 14:32:20,393 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:20,393 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:20,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-09-17 14:32:20,393 INFO L427 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 14:32:20,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:20,394 INFO L82 PathProgramCache]: Analyzing trace with hash -395441848, now seen corresponding path program 6 times [2020-09-17 14:32:20,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:20,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045536801] [2020-09-17 14:32:20,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:20,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:20,505 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:32:20,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045536801] [2020-09-17 14:32:20,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:20,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 14:32:20,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41475335] [2020-09-17 14:32:20,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 14:32:20,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:20,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 14:32:20,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 14:32:20,507 INFO L87 Difference]: Start difference. First operand 1907 states and 7310 transitions. Second operand 9 states. [2020-09-17 14:32:21,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:21,451 INFO L93 Difference]: Finished difference Result 5717 states and 17784 transitions. [2020-09-17 14:32:21,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:32:21,452 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-17 14:32:21,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:21,467 INFO L225 Difference]: With dead ends: 5717 [2020-09-17 14:32:21,467 INFO L226 Difference]: Without dead ends: 5705 [2020-09-17 14:32:21,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 14:32:21,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5705 states. [2020-09-17 14:32:21,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5705 to 1800. [2020-09-17 14:32:21,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1800 states. [2020-09-17 14:32:21,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 6961 transitions. [2020-09-17 14:32:21,559 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 6961 transitions. Word has length 21 [2020-09-17 14:32:21,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:21,559 INFO L479 AbstractCegarLoop]: Abstraction has 1800 states and 6961 transitions. [2020-09-17 14:32:21,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 14:32:21,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 6961 transitions. [2020-09-17 14:32:21,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 14:32:21,560 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:21,560 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:21,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-09-17 14:32:21,561 INFO L427 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 14:32:21,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:21,561 INFO L82 PathProgramCache]: Analyzing trace with hash -334654421, now seen corresponding path program 1 times [2020-09-17 14:32:21,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:21,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282515454] [2020-09-17 14:32:21,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:21,623 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:32:21,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282515454] [2020-09-17 14:32:21,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:21,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 14:32:21,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168387412] [2020-09-17 14:32:21,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 14:32:21,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:21,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 14:32:21,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 14:32:21,626 INFO L87 Difference]: Start difference. First operand 1800 states and 6961 transitions. Second operand 5 states. [2020-09-17 14:32:21,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:21,738 INFO L93 Difference]: Finished difference Result 2762 states and 9976 transitions. [2020-09-17 14:32:21,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 14:32:21,738 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-17 14:32:21,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:21,744 INFO L225 Difference]: With dead ends: 2762 [2020-09-17 14:32:21,744 INFO L226 Difference]: Without dead ends: 2746 [2020-09-17 14:32:21,744 INFO L675 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 [2020-09-17 14:32:21,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2020-09-17 14:32:21,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 1965. [2020-09-17 14:32:21,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2020-09-17 14:32:21,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 7429 transitions. [2020-09-17 14:32:21,800 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 7429 transitions. Word has length 21 [2020-09-17 14:32:21,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:21,801 INFO L479 AbstractCegarLoop]: Abstraction has 1965 states and 7429 transitions. [2020-09-17 14:32:21,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 14:32:21,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 7429 transitions. [2020-09-17 14:32:21,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-17 14:32:21,803 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:21,803 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:21,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-09-17 14:32:21,804 INFO L427 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 14:32:21,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:21,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1788555247, now seen corresponding path program 1 times [2020-09-17 14:32:21,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:21,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966581284] [2020-09-17 14:32:21,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:21,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 14:32:21,818 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 14:32:21,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 14:32:21,830 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 14:32:21,837 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-17 14:32:21,838 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-17 14:32:21,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-09-17 14:32:21,838 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-17 14:32:21,839 WARN L363 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-17 14:32:21,839 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-09-17 14:32:21,852 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,852 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,852 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,852 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,852 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,852 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,853 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,853 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,853 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,853 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,853 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,853 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,853 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,854 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,854 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,854 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,854 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,854 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,854 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,855 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,855 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,855 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,855 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,855 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,855 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,856 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,856 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,856 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,856 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,856 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,856 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,856 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,857 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,857 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,857 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,857 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,857 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,857 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,857 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,858 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,858 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,858 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,858 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,858 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,858 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,859 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,859 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,859 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,859 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,859 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,859 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,859 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,860 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,860 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,860 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,860 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,860 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,860 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,860 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,861 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,861 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,861 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,861 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,861 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,861 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,862 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,862 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,862 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,862 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,862 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,862 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,862 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,863 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,863 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,863 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,863 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,863 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,863 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,864 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,864 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,864 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,864 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,864 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,864 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,864 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,865 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,865 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,865 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,865 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,866 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,871 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,871 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,871 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,871 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,871 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,873 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,873 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,873 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,873 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,873 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,874 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,875 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,875 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,875 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,875 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,876 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,876 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,876 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,877 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,877 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,878 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,878 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,878 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,878 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,878 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,878 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,879 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,880 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,880 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,880 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,880 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,880 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,881 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,881 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,882 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,882 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,882 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,882 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,883 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,883 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,883 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,883 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,883 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,884 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,885 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,885 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,885 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,885 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,885 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,885 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:32:21,886 INFO L251 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-09-17 14:32:21,886 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 14:32:21,887 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 14:32:21,887 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-17 14:32:21,887 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 14:32:21,887 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 14:32:21,887 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 14:32:21,887 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 14:32:21,887 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 14:32:21,889 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 122 transitions, 334 flow [2020-09-17 14:32:21,889 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 137 places, 122 transitions, 334 flow [2020-09-17 14:32:21,904 INFO L129 PetriNetUnfolder]: 8/152 cut-off events. [2020-09-17 14:32:21,905 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-09-17 14:32:21,906 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. [2020-09-17 14:32:21,910 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 137 places, 122 transitions, 334 flow [2020-09-17 14:32:21,926 INFO L129 PetriNetUnfolder]: 8/152 cut-off events. [2020-09-17 14:32:21,926 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-09-17 14:32:21,927 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. [2020-09-17 14:32:21,931 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2264 [2020-09-17 14:32:21,931 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-17 14:32:23,727 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-09-17 14:32:23,840 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-09-17 14:32:24,224 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2020-09-17 14:32:24,490 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-09-17 14:32:24,601 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2999 [2020-09-17 14:32:24,601 INFO L214 etLargeBlockEncoding]: Total number of compositions: 104 [2020-09-17 14:32:24,603 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 39 transitions, 168 flow [2020-09-17 14:32:24,990 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6191 states. [2020-09-17 14:32:24,990 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states. [2020-09-17 14:32:24,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-17 14:32:24,991 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:24,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-17 14:32:24,991 INFO L427 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]=== [2020-09-17 14:32:24,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:24,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1026170, now seen corresponding path program 1 times [2020-09-17 14:32:24,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:24,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346795413] [2020-09-17 14:32:24,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:24,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:25,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:32:25,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346795413] [2020-09-17 14:32:25,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:25,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-17 14:32:25,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661817237] [2020-09-17 14:32:25,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 14:32:25,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:25,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 14:32:25,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 14:32:25,022 INFO L87 Difference]: Start difference. First operand 6191 states. Second operand 3 states. [2020-09-17 14:32:25,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:25,104 INFO L93 Difference]: Finished difference Result 5844 states and 26316 transitions. [2020-09-17 14:32:25,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 14:32:25,105 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-17 14:32:25,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:25,125 INFO L225 Difference]: With dead ends: 5844 [2020-09-17 14:32:25,126 INFO L226 Difference]: Without dead ends: 5479 [2020-09-17 14:32:25,127 INFO L675 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 [2020-09-17 14:32:25,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5479 states. [2020-09-17 14:32:25,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5479 to 5479. [2020-09-17 14:32:25,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5479 states. [2020-09-17 14:32:25,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5479 states to 5479 states and 24493 transitions. [2020-09-17 14:32:25,285 INFO L78 Accepts]: Start accepts. Automaton has 5479 states and 24493 transitions. Word has length 3 [2020-09-17 14:32:25,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:25,286 INFO L479 AbstractCegarLoop]: Abstraction has 5479 states and 24493 transitions. [2020-09-17 14:32:25,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 14:32:25,286 INFO L276 IsEmpty]: Start isEmpty. Operand 5479 states and 24493 transitions. [2020-09-17 14:32:25,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-17 14:32:25,286 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:25,286 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:25,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-09-17 14:32:25,287 INFO L427 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]=== [2020-09-17 14:32:25,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:25,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1344335463, now seen corresponding path program 1 times [2020-09-17 14:32:25,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:25,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77840696] [2020-09-17 14:32:25,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:25,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:25,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:32:25,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77840696] [2020-09-17 14:32:25,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:25,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 14:32:25,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478625207] [2020-09-17 14:32:25,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 14:32:25,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:25,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 14:32:25,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 14:32:25,340 INFO L87 Difference]: Start difference. First operand 5479 states and 24493 transitions. Second operand 5 states. [2020-09-17 14:32:25,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:25,512 INFO L93 Difference]: Finished difference Result 9673 states and 40333 transitions. [2020-09-17 14:32:25,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 14:32:25,512 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-17 14:32:25,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:25,540 INFO L225 Difference]: With dead ends: 9673 [2020-09-17 14:32:25,540 INFO L226 Difference]: Without dead ends: 9666 [2020-09-17 14:32:25,541 INFO L675 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 [2020-09-17 14:32:25,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9666 states. [2020-09-17 14:32:26,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9666 to 6331. [2020-09-17 14:32:26,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6331 states. [2020-09-17 14:32:26,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 28544 transitions. [2020-09-17 14:32:26,437 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 28544 transitions. Word has length 9 [2020-09-17 14:32:26,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:26,437 INFO L479 AbstractCegarLoop]: Abstraction has 6331 states and 28544 transitions. [2020-09-17 14:32:26,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 14:32:26,437 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 28544 transitions. [2020-09-17 14:32:26,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-17 14:32:26,438 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:26,438 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:26,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-09-17 14:32:26,438 INFO L427 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]=== [2020-09-17 14:32:26,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:26,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1513378118, now seen corresponding path program 1 times [2020-09-17 14:32:26,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:26,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618304003] [2020-09-17 14:32:26,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:26,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:26,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:32:26,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618304003] [2020-09-17 14:32:26,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:26,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 14:32:26,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726564485] [2020-09-17 14:32:26,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 14:32:26,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:26,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 14:32:26,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 14:32:26,494 INFO L87 Difference]: Start difference. First operand 6331 states and 28544 transitions. Second operand 5 states. [2020-09-17 14:32:26,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:26,705 INFO L93 Difference]: Finished difference Result 11081 states and 46826 transitions. [2020-09-17 14:32:26,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 14:32:26,706 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-17 14:32:26,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:26,750 INFO L225 Difference]: With dead ends: 11081 [2020-09-17 14:32:26,750 INFO L226 Difference]: Without dead ends: 11068 [2020-09-17 14:32:26,752 INFO L675 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 [2020-09-17 14:32:26,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11068 states. [2020-09-17 14:32:26,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11068 to 7391. [2020-09-17 14:32:26,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7391 states. [2020-09-17 14:32:27,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7391 states to 7391 states and 33694 transitions. [2020-09-17 14:32:27,010 INFO L78 Accepts]: Start accepts. Automaton has 7391 states and 33694 transitions. Word has length 13 [2020-09-17 14:32:27,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:27,010 INFO L479 AbstractCegarLoop]: Abstraction has 7391 states and 33694 transitions. [2020-09-17 14:32:27,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 14:32:27,010 INFO L276 IsEmpty]: Start isEmpty. Operand 7391 states and 33694 transitions. [2020-09-17 14:32:27,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 14:32:27,011 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:27,011 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:27,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-09-17 14:32:27,011 INFO L427 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]=== [2020-09-17 14:32:27,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:27,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1678648171, now seen corresponding path program 1 times [2020-09-17 14:32:27,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:27,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359875921] [2020-09-17 14:32:27,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:27,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:27,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:32:27,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359875921] [2020-09-17 14:32:27,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730378461] [2020-09-17 14:32:27,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:32:27,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:27,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 14:32:27,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:32:27,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:32:27,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:32:27,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 14:32:27,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56753157] [2020-09-17 14:32:27,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 14:32:27,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:27,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 14:32:27,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 14:32:27,284 INFO L87 Difference]: Start difference. First operand 7391 states and 33694 transitions. Second operand 12 states. [2020-09-17 14:32:27,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:27,790 INFO L93 Difference]: Finished difference Result 16749 states and 66010 transitions. [2020-09-17 14:32:27,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:32:27,791 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-09-17 14:32:27,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:27,852 INFO L225 Difference]: With dead ends: 16749 [2020-09-17 14:32:27,852 INFO L226 Difference]: Without dead ends: 16736 [2020-09-17 14:32:27,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:32:28,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16736 states. [2020-09-17 14:32:28,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16736 to 7303. [2020-09-17 14:32:28,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7303 states. [2020-09-17 14:32:28,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7303 states to 7303 states and 33260 transitions. [2020-09-17 14:32:28,458 INFO L78 Accepts]: Start accepts. Automaton has 7303 states and 33260 transitions. Word has length 15 [2020-09-17 14:32:28,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:28,458 INFO L479 AbstractCegarLoop]: Abstraction has 7303 states and 33260 transitions. [2020-09-17 14:32:28,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 14:32:28,459 INFO L276 IsEmpty]: Start isEmpty. Operand 7303 states and 33260 transitions. [2020-09-17 14:32:28,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 14:32:28,459 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:28,459 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:28,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:32:28,660 INFO L427 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]=== [2020-09-17 14:32:28,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:28,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1637555113, now seen corresponding path program 2 times [2020-09-17 14:32:28,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:28,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626771664] [2020-09-17 14:32:28,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:28,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:28,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:32:28,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626771664] [2020-09-17 14:32:28,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:28,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 14:32:28,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028016658] [2020-09-17 14:32:28,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 14:32:28,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:28,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 14:32:28,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:32:28,733 INFO L87 Difference]: Start difference. First operand 7303 states and 33260 transitions. Second operand 7 states. [2020-09-17 14:32:29,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:29,186 INFO L93 Difference]: Finished difference Result 17085 states and 67393 transitions. [2020-09-17 14:32:29,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:32:29,186 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-17 14:32:29,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:29,244 INFO L225 Difference]: With dead ends: 17085 [2020-09-17 14:32:29,245 INFO L226 Difference]: Without dead ends: 17071 [2020-09-17 14:32:29,245 INFO L675 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 [2020-09-17 14:32:29,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17071 states. [2020-09-17 14:32:29,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17071 to 7048. [2020-09-17 14:32:29,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7048 states. [2020-09-17 14:32:29,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7048 states to 7048 states and 32136 transitions. [2020-09-17 14:32:29,532 INFO L78 Accepts]: Start accepts. Automaton has 7048 states and 32136 transitions. Word has length 15 [2020-09-17 14:32:29,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:29,532 INFO L479 AbstractCegarLoop]: Abstraction has 7048 states and 32136 transitions. [2020-09-17 14:32:29,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 14:32:29,533 INFO L276 IsEmpty]: Start isEmpty. Operand 7048 states and 32136 transitions. [2020-09-17 14:32:29,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-17 14:32:29,533 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:29,533 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:29,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-09-17 14:32:29,534 INFO L427 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]=== [2020-09-17 14:32:29,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:29,534 INFO L82 PathProgramCache]: Analyzing trace with hash -288445665, now seen corresponding path program 1 times [2020-09-17 14:32:29,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:29,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807817364] [2020-09-17 14:32:29,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:29,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:29,593 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:32:29,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807817364] [2020-09-17 14:32:29,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:29,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 14:32:29,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971151541] [2020-09-17 14:32:29,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 14:32:29,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:29,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 14:32:29,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 14:32:29,596 INFO L87 Difference]: Start difference. First operand 7048 states and 32136 transitions. Second operand 5 states. [2020-09-17 14:32:29,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:29,791 INFO L93 Difference]: Finished difference Result 12234 states and 52488 transitions. [2020-09-17 14:32:29,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 14:32:29,791 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-17 14:32:29,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:29,825 INFO L225 Difference]: With dead ends: 12234 [2020-09-17 14:32:29,825 INFO L226 Difference]: Without dead ends: 12212 [2020-09-17 14:32:29,826 INFO L675 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 [2020-09-17 14:32:29,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12212 states. [2020-09-17 14:32:30,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12212 to 8342. [2020-09-17 14:32:30,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8342 states. [2020-09-17 14:32:31,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8342 states to 8342 states and 38278 transitions. [2020-09-17 14:32:31,010 INFO L78 Accepts]: Start accepts. Automaton has 8342 states and 38278 transitions. Word has length 17 [2020-09-17 14:32:31,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:31,011 INFO L479 AbstractCegarLoop]: Abstraction has 8342 states and 38278 transitions. [2020-09-17 14:32:31,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 14:32:31,011 INFO L276 IsEmpty]: Start isEmpty. Operand 8342 states and 38278 transitions. [2020-09-17 14:32:31,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 14:32:31,012 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:31,012 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:31,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-09-17 14:32:31,012 INFO L427 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]=== [2020-09-17 14:32:31,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:31,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1255672082, now seen corresponding path program 1 times [2020-09-17 14:32:31,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:31,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457925366] [2020-09-17 14:32:31,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:31,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:31,089 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-17 14:32:31,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457925366] [2020-09-17 14:32:31,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184270342] [2020-09-17 14:32:31,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:32:31,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:31,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 14:32:31,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:32:31,244 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-17 14:32:31,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:32:31,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 14:32:31,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455533523] [2020-09-17 14:32:31,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 14:32:31,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:31,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 14:32:31,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 14:32:31,246 INFO L87 Difference]: Start difference. First operand 8342 states and 38278 transitions. Second operand 12 states. [2020-09-17 14:32:31,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:31,688 INFO L93 Difference]: Finished difference Result 19016 states and 76191 transitions. [2020-09-17 14:32:31,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:32:31,689 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-17 14:32:31,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:31,749 INFO L225 Difference]: With dead ends: 19016 [2020-09-17 14:32:31,749 INFO L226 Difference]: Without dead ends: 18998 [2020-09-17 14:32:31,750 INFO L675 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 [2020-09-17 14:32:31,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18998 states. [2020-09-17 14:32:32,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18998 to 8452. [2020-09-17 14:32:32,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8452 states. [2020-09-17 14:32:32,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8452 states to 8452 states and 38704 transitions. [2020-09-17 14:32:32,102 INFO L78 Accepts]: Start accepts. Automaton has 8452 states and 38704 transitions. Word has length 19 [2020-09-17 14:32:32,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:32,102 INFO L479 AbstractCegarLoop]: Abstraction has 8452 states and 38704 transitions. [2020-09-17 14:32:32,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 14:32:32,102 INFO L276 IsEmpty]: Start isEmpty. Operand 8452 states and 38704 transitions. [2020-09-17 14:32:32,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 14:32:32,103 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:32,103 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:32,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-09-17 14:32:32,318 INFO L427 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]=== [2020-09-17 14:32:32,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:32,318 INFO L82 PathProgramCache]: Analyzing trace with hash 402059005, now seen corresponding path program 1 times [2020-09-17 14:32:32,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:32,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611976670] [2020-09-17 14:32:32,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:32,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:32,393 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:32:32,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611976670] [2020-09-17 14:32:32,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176559561] [2020-09-17 14:32:32,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:32:32,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:32,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 14:32:32,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:32:32,549 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:32:32,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:32:32,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 14:32:32,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537286998] [2020-09-17 14:32:32,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 14:32:32,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:32,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 14:32:32,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 14:32:32,552 INFO L87 Difference]: Start difference. First operand 8452 states and 38704 transitions. Second operand 12 states. [2020-09-17 14:32:33,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:33,063 INFO L93 Difference]: Finished difference Result 19670 states and 79028 transitions. [2020-09-17 14:32:33,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:32:33,064 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-17 14:32:33,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:33,152 INFO L225 Difference]: With dead ends: 19670 [2020-09-17 14:32:33,152 INFO L226 Difference]: Without dead ends: 19645 [2020-09-17 14:32:33,153 INFO L675 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 [2020-09-17 14:32:33,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19645 states. [2020-09-17 14:32:33,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19645 to 8480. [2020-09-17 14:32:33,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8480 states. [2020-09-17 14:32:33,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8480 states to 8480 states and 38825 transitions. [2020-09-17 14:32:33,707 INFO L78 Accepts]: Start accepts. Automaton has 8480 states and 38825 transitions. Word has length 19 [2020-09-17 14:32:33,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:33,707 INFO L479 AbstractCegarLoop]: Abstraction has 8480 states and 38825 transitions. [2020-09-17 14:32:33,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 14:32:33,707 INFO L276 IsEmpty]: Start isEmpty. Operand 8480 states and 38825 transitions. [2020-09-17 14:32:33,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 14:32:33,708 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:33,708 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:33,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-09-17 14:32:33,909 INFO L427 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]=== [2020-09-17 14:32:33,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:33,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1976597437, now seen corresponding path program 2 times [2020-09-17 14:32:33,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:33,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505885922] [2020-09-17 14:32:33,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:33,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:33,985 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:32:33,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505885922] [2020-09-17 14:32:33,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:33,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 14:32:33,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416996081] [2020-09-17 14:32:33,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 14:32:33,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:33,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 14:32:33,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:32:33,987 INFO L87 Difference]: Start difference. First operand 8480 states and 38825 transitions. Second operand 7 states. [2020-09-17 14:32:34,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:34,449 INFO L93 Difference]: Finished difference Result 19852 states and 79846 transitions. [2020-09-17 14:32:34,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:32:34,449 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-17 14:32:34,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:34,506 INFO L225 Difference]: With dead ends: 19852 [2020-09-17 14:32:34,507 INFO L226 Difference]: Without dead ends: 19827 [2020-09-17 14:32:34,507 INFO L675 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 [2020-09-17 14:32:34,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19827 states. [2020-09-17 14:32:34,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19827 to 8379. [2020-09-17 14:32:34,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8379 states. [2020-09-17 14:32:34,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8379 states to 8379 states and 38406 transitions. [2020-09-17 14:32:34,873 INFO L78 Accepts]: Start accepts. Automaton has 8379 states and 38406 transitions. Word has length 19 [2020-09-17 14:32:34,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:34,874 INFO L479 AbstractCegarLoop]: Abstraction has 8379 states and 38406 transitions. [2020-09-17 14:32:34,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 14:32:34,874 INFO L276 IsEmpty]: Start isEmpty. Operand 8379 states and 38406 transitions. [2020-09-17 14:32:34,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 14:32:34,875 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:34,875 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:34,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-09-17 14:32:34,875 INFO L427 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]=== [2020-09-17 14:32:34,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:34,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1976577008, now seen corresponding path program 2 times [2020-09-17 14:32:34,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:34,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820104877] [2020-09-17 14:32:34,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:34,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:34,946 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:32:34,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820104877] [2020-09-17 14:32:34,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:34,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 14:32:34,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455091352] [2020-09-17 14:32:34,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 14:32:34,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:34,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 14:32:34,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:32:34,948 INFO L87 Difference]: Start difference. First operand 8379 states and 38406 transitions. Second operand 7 states. [2020-09-17 14:32:35,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:35,387 INFO L93 Difference]: Finished difference Result 19555 states and 78564 transitions. [2020-09-17 14:32:35,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:32:35,388 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-17 14:32:35,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:35,448 INFO L225 Difference]: With dead ends: 19555 [2020-09-17 14:32:35,449 INFO L226 Difference]: Without dead ends: 19530 [2020-09-17 14:32:35,449 INFO L675 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 [2020-09-17 14:32:35,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19530 states. [2020-09-17 14:32:35,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19530 to 8317. [2020-09-17 14:32:35,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8317 states. [2020-09-17 14:32:36,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8317 states to 8317 states and 38184 transitions. [2020-09-17 14:32:36,020 INFO L78 Accepts]: Start accepts. Automaton has 8317 states and 38184 transitions. Word has length 19 [2020-09-17 14:32:36,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:36,020 INFO L479 AbstractCegarLoop]: Abstraction has 8317 states and 38184 transitions. [2020-09-17 14:32:36,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 14:32:36,021 INFO L276 IsEmpty]: Start isEmpty. Operand 8317 states and 38184 transitions. [2020-09-17 14:32:36,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 14:32:36,022 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:36,022 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:36,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-09-17 14:32:36,023 INFO L427 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]=== [2020-09-17 14:32:36,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:36,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1389591796, now seen corresponding path program 1 times [2020-09-17 14:32:36,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:36,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058668778] [2020-09-17 14:32:36,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:36,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:36,118 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:32:36,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058668778] [2020-09-17 14:32:36,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602530168] [2020-09-17 14:32:36,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:32:36,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:36,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:32:36,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:32:36,351 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:32:36,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:32:36,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:32:36,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483651583] [2020-09-17 14:32:36,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:32:36,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:36,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:32:36,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:32:36,354 INFO L87 Difference]: Start difference. First operand 8317 states and 38184 transitions. Second operand 16 states. [2020-09-17 14:32:37,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:37,534 INFO L93 Difference]: Finished difference Result 26969 states and 101544 transitions. [2020-09-17 14:32:37,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:32:37,535 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 14:32:37,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:37,605 INFO L225 Difference]: With dead ends: 26969 [2020-09-17 14:32:37,605 INFO L226 Difference]: Without dead ends: 26957 [2020-09-17 14:32:37,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:32:37,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26957 states. [2020-09-17 14:32:38,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26957 to 8204. [2020-09-17 14:32:38,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8204 states. [2020-09-17 14:32:38,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8204 states to 8204 states and 37628 transitions. [2020-09-17 14:32:38,033 INFO L78 Accepts]: Start accepts. Automaton has 8204 states and 37628 transitions. Word has length 21 [2020-09-17 14:32:38,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:38,034 INFO L479 AbstractCegarLoop]: Abstraction has 8204 states and 37628 transitions. [2020-09-17 14:32:38,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:32:38,034 INFO L276 IsEmpty]: Start isEmpty. Operand 8204 states and 37628 transitions. [2020-09-17 14:32:38,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 14:32:38,035 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:38,035 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:38,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:32:38,236 INFO L427 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]=== [2020-09-17 14:32:38,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:38,237 INFO L82 PathProgramCache]: Analyzing trace with hash 184946636, now seen corresponding path program 2 times [2020-09-17 14:32:38,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:38,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076897857] [2020-09-17 14:32:38,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:38,352 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-17 14:32:38,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076897857] [2020-09-17 14:32:38,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725965219] [2020-09-17 14:32:38,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:32:38,440 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 14:32:38,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:32:38,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:32:38,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:32:38,551 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-17 14:32:38,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:32:38,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:32:38,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62784702] [2020-09-17 14:32:38,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:32:38,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:38,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:32:38,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:32:38,554 INFO L87 Difference]: Start difference. First operand 8204 states and 37628 transitions. Second operand 16 states. [2020-09-17 14:32:39,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:39,883 INFO L93 Difference]: Finished difference Result 26661 states and 100277 transitions. [2020-09-17 14:32:39,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:32:39,884 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 14:32:39,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:39,960 INFO L225 Difference]: With dead ends: 26661 [2020-09-17 14:32:39,960 INFO L226 Difference]: Without dead ends: 26645 [2020-09-17 14:32:39,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:32:40,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26645 states. [2020-09-17 14:32:40,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26645 to 8091. [2020-09-17 14:32:40,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8091 states. [2020-09-17 14:32:40,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8091 states to 8091 states and 37076 transitions. [2020-09-17 14:32:40,403 INFO L78 Accepts]: Start accepts. Automaton has 8091 states and 37076 transitions. Word has length 21 [2020-09-17 14:32:40,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:40,404 INFO L479 AbstractCegarLoop]: Abstraction has 8091 states and 37076 transitions. [2020-09-17 14:32:40,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:32:40,404 INFO L276 IsEmpty]: Start isEmpty. Operand 8091 states and 37076 transitions. [2020-09-17 14:32:40,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 14:32:40,405 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:40,405 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:40,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-09-17 14:32:40,620 INFO L427 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]=== [2020-09-17 14:32:40,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:40,620 INFO L82 PathProgramCache]: Analyzing trace with hash -231570740, now seen corresponding path program 3 times [2020-09-17 14:32:40,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:40,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562965240] [2020-09-17 14:32:40,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:40,714 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:32:40,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562965240] [2020-09-17 14:32:40,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977532407] [2020-09-17 14:32:40,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:32:40,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-17 14:32:40,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:32:40,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:32:40,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:32:40,941 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:32:40,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:32:40,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:32:40,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893280762] [2020-09-17 14:32:40,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:32:40,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:40,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:32:40,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:32:40,943 INFO L87 Difference]: Start difference. First operand 8091 states and 37076 transitions. Second operand 16 states. [2020-09-17 14:32:42,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:42,119 INFO L93 Difference]: Finished difference Result 26686 states and 100402 transitions. [2020-09-17 14:32:42,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:32:42,119 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 14:32:42,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:42,192 INFO L225 Difference]: With dead ends: 26686 [2020-09-17 14:32:42,192 INFO L226 Difference]: Without dead ends: 26674 [2020-09-17 14:32:42,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:32:42,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26674 states. [2020-09-17 14:32:42,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26674 to 7861. [2020-09-17 14:32:42,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7861 states. [2020-09-17 14:32:42,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7861 states to 7861 states and 36066 transitions. [2020-09-17 14:32:42,849 INFO L78 Accepts]: Start accepts. Automaton has 7861 states and 36066 transitions. Word has length 21 [2020-09-17 14:32:42,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:42,849 INFO L479 AbstractCegarLoop]: Abstraction has 7861 states and 36066 transitions. [2020-09-17 14:32:42,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:32:42,849 INFO L276 IsEmpty]: Start isEmpty. Operand 7861 states and 36066 transitions. [2020-09-17 14:32:42,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 14:32:42,850 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:42,850 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:43,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:32:43,051 INFO L427 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]=== [2020-09-17 14:32:43,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:43,054 INFO L82 PathProgramCache]: Analyzing trace with hash -168366002, now seen corresponding path program 4 times [2020-09-17 14:32:43,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:43,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800479881] [2020-09-17 14:32:43,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:43,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:43,159 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:32:43,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800479881] [2020-09-17 14:32:43,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658675804] [2020-09-17 14:32:43,160 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:32:43,237 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 14:32:43,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:32:43,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:32:43,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:32:43,363 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:32:43,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:32:43,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:32:43,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310257932] [2020-09-17 14:32:43,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:32:43,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:43,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:32:43,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:32:43,366 INFO L87 Difference]: Start difference. First operand 7861 states and 36066 transitions. Second operand 16 states. [2020-09-17 14:32:44,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:44,570 INFO L93 Difference]: Finished difference Result 26489 states and 99650 transitions. [2020-09-17 14:32:44,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:32:44,570 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 14:32:44,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:44,651 INFO L225 Difference]: With dead ends: 26489 [2020-09-17 14:32:44,651 INFO L226 Difference]: Without dead ends: 26473 [2020-09-17 14:32:44,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:32:44,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26473 states. [2020-09-17 14:32:45,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26473 to 7748. [2020-09-17 14:32:45,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7748 states. [2020-09-17 14:32:45,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7748 states to 7748 states and 35514 transitions. [2020-09-17 14:32:45,040 INFO L78 Accepts]: Start accepts. Automaton has 7748 states and 35514 transitions. Word has length 21 [2020-09-17 14:32:45,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:45,040 INFO L479 AbstractCegarLoop]: Abstraction has 7748 states and 35514 transitions. [2020-09-17 14:32:45,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:32:45,040 INFO L276 IsEmpty]: Start isEmpty. Operand 7748 states and 35514 transitions. [2020-09-17 14:32:45,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 14:32:45,041 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:45,041 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:45,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-09-17 14:32:45,242 INFO L427 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]=== [2020-09-17 14:32:45,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:45,243 INFO L82 PathProgramCache]: Analyzing trace with hash 210203517, now seen corresponding path program 1 times [2020-09-17 14:32:45,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:45,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399671339] [2020-09-17 14:32:45,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:45,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:45,303 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:32:45,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399671339] [2020-09-17 14:32:45,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:45,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 14:32:45,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311881948] [2020-09-17 14:32:45,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 14:32:45,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:45,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 14:32:45,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 14:32:45,305 INFO L87 Difference]: Start difference. First operand 7748 states and 35514 transitions. Second operand 5 states. [2020-09-17 14:32:45,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:45,493 INFO L93 Difference]: Finished difference Result 13251 states and 57501 transitions. [2020-09-17 14:32:45,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 14:32:45,494 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-17 14:32:45,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:45,530 INFO L225 Difference]: With dead ends: 13251 [2020-09-17 14:32:45,530 INFO L226 Difference]: Without dead ends: 13220 [2020-09-17 14:32:45,531 INFO L675 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 [2020-09-17 14:32:45,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13220 states. [2020-09-17 14:32:45,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13220 to 9255. [2020-09-17 14:32:45,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9255 states. [2020-09-17 14:32:45,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9255 states to 9255 states and 42368 transitions. [2020-09-17 14:32:45,836 INFO L78 Accepts]: Start accepts. Automaton has 9255 states and 42368 transitions. Word has length 21 [2020-09-17 14:32:45,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:45,836 INFO L479 AbstractCegarLoop]: Abstraction has 9255 states and 42368 transitions. [2020-09-17 14:32:45,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 14:32:45,836 INFO L276 IsEmpty]: Start isEmpty. Operand 9255 states and 42368 transitions. [2020-09-17 14:32:45,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 14:32:45,838 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:45,838 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:45,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-09-17 14:32:45,838 INFO L427 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]=== [2020-09-17 14:32:45,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:45,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1134578958, now seen corresponding path program 5 times [2020-09-17 14:32:45,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:45,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242888094] [2020-09-17 14:32:45,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:45,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:45,946 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:32:45,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242888094] [2020-09-17 14:32:45,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:45,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 14:32:45,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007451040] [2020-09-17 14:32:45,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 14:32:45,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:45,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 14:32:45,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 14:32:45,948 INFO L87 Difference]: Start difference. First operand 9255 states and 42368 transitions. Second operand 9 states. [2020-09-17 14:32:47,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:47,053 INFO L93 Difference]: Finished difference Result 29788 states and 113841 transitions. [2020-09-17 14:32:47,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:32:47,053 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-17 14:32:47,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:47,145 INFO L225 Difference]: With dead ends: 29788 [2020-09-17 14:32:47,145 INFO L226 Difference]: Without dead ends: 29770 [2020-09-17 14:32:47,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 14:32:47,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29770 states. [2020-09-17 14:32:47,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29770 to 8964. [2020-09-17 14:32:47,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8964 states. [2020-09-17 14:32:47,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8964 states to 8964 states and 41031 transitions. [2020-09-17 14:32:47,622 INFO L78 Accepts]: Start accepts. Automaton has 8964 states and 41031 transitions. Word has length 21 [2020-09-17 14:32:47,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:47,622 INFO L479 AbstractCegarLoop]: Abstraction has 8964 states and 41031 transitions. [2020-09-17 14:32:47,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 14:32:47,623 INFO L276 IsEmpty]: Start isEmpty. Operand 8964 states and 41031 transitions. [2020-09-17 14:32:47,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 14:32:47,624 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:47,624 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:47,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-09-17 14:32:47,624 INFO L427 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]=== [2020-09-17 14:32:47,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:47,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1114967118, now seen corresponding path program 6 times [2020-09-17 14:32:47,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:47,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644069364] [2020-09-17 14:32:47,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:47,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:47,733 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:32:47,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644069364] [2020-09-17 14:32:47,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:47,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 14:32:47,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197923537] [2020-09-17 14:32:47,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 14:32:47,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:47,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 14:32:47,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 14:32:47,735 INFO L87 Difference]: Start difference. First operand 8964 states and 41031 transitions. Second operand 9 states. [2020-09-17 14:32:48,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:48,785 INFO L93 Difference]: Finished difference Result 29379 states and 112099 transitions. [2020-09-17 14:32:48,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:32:48,786 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-17 14:32:48,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:48,873 INFO L225 Difference]: With dead ends: 29379 [2020-09-17 14:32:48,874 INFO L226 Difference]: Without dead ends: 29356 [2020-09-17 14:32:48,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 14:32:49,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29356 states. [2020-09-17 14:32:49,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29356 to 8573. [2020-09-17 14:32:49,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8573 states. [2020-09-17 14:32:49,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8573 states to 8573 states and 39353 transitions. [2020-09-17 14:32:49,381 INFO L78 Accepts]: Start accepts. Automaton has 8573 states and 39353 transitions. Word has length 21 [2020-09-17 14:32:49,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:49,382 INFO L479 AbstractCegarLoop]: Abstraction has 8573 states and 39353 transitions. [2020-09-17 14:32:49,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 14:32:49,382 INFO L276 IsEmpty]: Start isEmpty. Operand 8573 states and 39353 transitions. [2020-09-17 14:32:49,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 14:32:49,383 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:49,383 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:49,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-09-17 14:32:49,384 INFO L427 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]=== [2020-09-17 14:32:49,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:49,384 INFO L82 PathProgramCache]: Analyzing trace with hash 715669452, now seen corresponding path program 1 times [2020-09-17 14:32:49,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:49,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014089690] [2020-09-17 14:32:49,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:49,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:49,467 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 14:32:49,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014089690] [2020-09-17 14:32:49,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903876208] [2020-09-17 14:32:49,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:32:49,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:49,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 14:32:49,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:32:49,781 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 14:32:49,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:32:49,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 14:32:49,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231272472] [2020-09-17 14:32:49,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 14:32:49,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:49,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 14:32:49,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 14:32:49,783 INFO L87 Difference]: Start difference. First operand 8573 states and 39353 transitions. Second operand 12 states. [2020-09-17 14:32:50,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:50,236 INFO L93 Difference]: Finished difference Result 19727 states and 80274 transitions. [2020-09-17 14:32:50,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:32:50,237 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-17 14:32:50,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:50,289 INFO L225 Difference]: With dead ends: 19727 [2020-09-17 14:32:50,289 INFO L226 Difference]: Without dead ends: 19703 [2020-09-17 14:32:50,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:32:50,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19703 states. [2020-09-17 14:32:50,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19703 to 8847. [2020-09-17 14:32:50,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8847 states. [2020-09-17 14:32:50,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8847 states to 8847 states and 40495 transitions. [2020-09-17 14:32:50,660 INFO L78 Accepts]: Start accepts. Automaton has 8847 states and 40495 transitions. Word has length 23 [2020-09-17 14:32:50,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:50,661 INFO L479 AbstractCegarLoop]: Abstraction has 8847 states and 40495 transitions. [2020-09-17 14:32:50,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 14:32:50,661 INFO L276 IsEmpty]: Start isEmpty. Operand 8847 states and 40495 transitions. [2020-09-17 14:32:50,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 14:32:50,663 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:50,663 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:50,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-09-17 14:32:50,864 INFO L427 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]=== [2020-09-17 14:32:50,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:50,865 INFO L82 PathProgramCache]: Analyzing trace with hash 504272987, now seen corresponding path program 1 times [2020-09-17 14:32:50,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:50,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639935417] [2020-09-17 14:32:50,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:50,941 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 14:32:50,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639935417] [2020-09-17 14:32:50,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186072619] [2020-09-17 14:32:50,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:32:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:51,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 14:32:51,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:32:51,136 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 14:32:51,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:32:51,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 14:32:51,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142708149] [2020-09-17 14:32:51,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 14:32:51,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:51,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 14:32:51,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 14:32:51,138 INFO L87 Difference]: Start difference. First operand 8847 states and 40495 transitions. Second operand 12 states. [2020-09-17 14:32:51,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:51,612 INFO L93 Difference]: Finished difference Result 20694 states and 84261 transitions. [2020-09-17 14:32:51,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:32:51,613 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-17 14:32:51,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:51,683 INFO L225 Difference]: With dead ends: 20694 [2020-09-17 14:32:51,684 INFO L226 Difference]: Without dead ends: 20666 [2020-09-17 14:32:51,684 INFO L675 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 [2020-09-17 14:32:51,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20666 states. [2020-09-17 14:32:52,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20666 to 9115. [2020-09-17 14:32:52,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9115 states. [2020-09-17 14:32:52,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9115 states to 9115 states and 41679 transitions. [2020-09-17 14:32:52,072 INFO L78 Accepts]: Start accepts. Automaton has 9115 states and 41679 transitions. Word has length 23 [2020-09-17 14:32:52,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:52,072 INFO L479 AbstractCegarLoop]: Abstraction has 9115 states and 41679 transitions. [2020-09-17 14:32:52,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 14:32:52,072 INFO L276 IsEmpty]: Start isEmpty. Operand 9115 states and 41679 transitions. [2020-09-17 14:32:52,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 14:32:52,074 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:52,074 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:52,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:32:52,275 INFO L427 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]=== [2020-09-17 14:32:52,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:52,276 INFO L82 PathProgramCache]: Analyzing trace with hash 591685125, now seen corresponding path program 1 times [2020-09-17 14:32:52,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:52,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703851632] [2020-09-17 14:32:52,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:52,358 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 14:32:52,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703851632] [2020-09-17 14:32:52,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340322555] [2020-09-17 14:32:52,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:32:52,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:52,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 14:32:52,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:32:52,512 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 14:32:52,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:32:52,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 14:32:52,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697405180] [2020-09-17 14:32:52,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 14:32:52,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:52,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 14:32:52,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 14:32:52,515 INFO L87 Difference]: Start difference. First operand 9115 states and 41679 transitions. Second operand 12 states. [2020-09-17 14:32:53,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:53,040 INFO L93 Difference]: Finished difference Result 21396 states and 87360 transitions. [2020-09-17 14:32:53,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:32:53,040 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-17 14:32:53,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:53,107 INFO L225 Difference]: With dead ends: 21396 [2020-09-17 14:32:53,108 INFO L226 Difference]: Without dead ends: 21359 [2020-09-17 14:32:53,108 INFO L675 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 [2020-09-17 14:32:53,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21359 states. [2020-09-17 14:32:53,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21359 to 9320. [2020-09-17 14:32:53,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9320 states. [2020-09-17 14:32:53,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9320 states to 9320 states and 42648 transitions. [2020-09-17 14:32:53,640 INFO L78 Accepts]: Start accepts. Automaton has 9320 states and 42648 transitions. Word has length 23 [2020-09-17 14:32:53,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:53,640 INFO L479 AbstractCegarLoop]: Abstraction has 9320 states and 42648 transitions. [2020-09-17 14:32:53,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 14:32:53,640 INFO L276 IsEmpty]: Start isEmpty. Operand 9320 states and 42648 transitions. [2020-09-17 14:32:53,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 14:32:53,642 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:53,642 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:53,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2020-09-17 14:32:53,843 INFO L427 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]=== [2020-09-17 14:32:53,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:53,844 INFO L82 PathProgramCache]: Analyzing trace with hash 142124187, now seen corresponding path program 2 times [2020-09-17 14:32:53,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:53,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302623062] [2020-09-17 14:32:53,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:53,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:53,926 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:32:53,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302623062] [2020-09-17 14:32:53,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:53,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 14:32:53,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756447231] [2020-09-17 14:32:53,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 14:32:53,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:53,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 14:32:53,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:32:53,928 INFO L87 Difference]: Start difference. First operand 9320 states and 42648 transitions. Second operand 7 states. [2020-09-17 14:32:54,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:54,376 INFO L93 Difference]: Finished difference Result 21489 states and 87752 transitions. [2020-09-17 14:32:54,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:32:54,377 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-17 14:32:54,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:54,433 INFO L225 Difference]: With dead ends: 21489 [2020-09-17 14:32:54,433 INFO L226 Difference]: Without dead ends: 21452 [2020-09-17 14:32:54,433 INFO L675 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 [2020-09-17 14:32:54,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21452 states. [2020-09-17 14:32:54,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21452 to 9401. [2020-09-17 14:32:54,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9401 states. [2020-09-17 14:32:54,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9401 states to 9401 states and 43010 transitions. [2020-09-17 14:32:54,811 INFO L78 Accepts]: Start accepts. Automaton has 9401 states and 43010 transitions. Word has length 23 [2020-09-17 14:32:54,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:54,811 INFO L479 AbstractCegarLoop]: Abstraction has 9401 states and 43010 transitions. [2020-09-17 14:32:54,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 14:32:54,811 INFO L276 IsEmpty]: Start isEmpty. Operand 9401 states and 43010 transitions. [2020-09-17 14:32:54,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 14:32:54,813 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:54,813 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:54,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-09-17 14:32:54,813 INFO L427 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]=== [2020-09-17 14:32:54,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:54,814 INFO L82 PathProgramCache]: Analyzing trace with hash 142117429, now seen corresponding path program 2 times [2020-09-17 14:32:54,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:54,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824466780] [2020-09-17 14:32:54,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:54,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:54,896 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:32:54,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824466780] [2020-09-17 14:32:54,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:54,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 14:32:54,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383538152] [2020-09-17 14:32:54,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 14:32:54,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:54,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 14:32:54,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:32:54,898 INFO L87 Difference]: Start difference. First operand 9401 states and 43010 transitions. Second operand 7 states. [2020-09-17 14:32:55,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:55,357 INFO L93 Difference]: Finished difference Result 21198 states and 86437 transitions. [2020-09-17 14:32:55,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:32:55,358 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-17 14:32:55,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:55,421 INFO L225 Difference]: With dead ends: 21198 [2020-09-17 14:32:55,421 INFO L226 Difference]: Without dead ends: 21161 [2020-09-17 14:32:55,422 INFO L675 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 [2020-09-17 14:32:55,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21161 states. [2020-09-17 14:32:55,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21161 to 9396. [2020-09-17 14:32:55,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9396 states. [2020-09-17 14:32:55,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9396 states to 9396 states and 42985 transitions. [2020-09-17 14:32:55,835 INFO L78 Accepts]: Start accepts. Automaton has 9396 states and 42985 transitions. Word has length 23 [2020-09-17 14:32:55,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:55,836 INFO L479 AbstractCegarLoop]: Abstraction has 9396 states and 42985 transitions. [2020-09-17 14:32:55,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 14:32:55,836 INFO L276 IsEmpty]: Start isEmpty. Operand 9396 states and 42985 transitions. [2020-09-17 14:32:55,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 14:32:55,838 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:55,838 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:55,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-09-17 14:32:55,839 INFO L427 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]=== [2020-09-17 14:32:55,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:55,839 INFO L82 PathProgramCache]: Analyzing trace with hash 142103758, now seen corresponding path program 2 times [2020-09-17 14:32:55,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:55,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647771121] [2020-09-17 14:32:55,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:55,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:55,932 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:32:55,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647771121] [2020-09-17 14:32:55,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:32:55,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 14:32:55,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062001404] [2020-09-17 14:32:55,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 14:32:55,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:55,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 14:32:55,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:32:55,934 INFO L87 Difference]: Start difference. First operand 9396 states and 42985 transitions. Second operand 7 states. [2020-09-17 14:32:56,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:56,426 INFO L93 Difference]: Finished difference Result 21067 states and 85734 transitions. [2020-09-17 14:32:56,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:32:56,428 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-17 14:32:56,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:56,510 INFO L225 Difference]: With dead ends: 21067 [2020-09-17 14:32:56,510 INFO L226 Difference]: Without dead ends: 21030 [2020-09-17 14:32:56,511 INFO L675 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 [2020-09-17 14:32:56,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21030 states. [2020-09-17 14:32:57,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21030 to 9426. [2020-09-17 14:32:57,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9426 states. [2020-09-17 14:32:57,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9426 states to 9426 states and 43057 transitions. [2020-09-17 14:32:57,058 INFO L78 Accepts]: Start accepts. Automaton has 9426 states and 43057 transitions. Word has length 23 [2020-09-17 14:32:57,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:57,059 INFO L479 AbstractCegarLoop]: Abstraction has 9426 states and 43057 transitions. [2020-09-17 14:32:57,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 14:32:57,059 INFO L276 IsEmpty]: Start isEmpty. Operand 9426 states and 43057 transitions. [2020-09-17 14:32:57,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:32:57,062 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:57,062 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:57,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-09-17 14:32:57,062 INFO L427 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]=== [2020-09-17 14:32:57,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:57,063 INFO L82 PathProgramCache]: Analyzing trace with hash 925732074, now seen corresponding path program 1 times [2020-09-17 14:32:57,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:57,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063117339] [2020-09-17 14:32:57,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:57,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:57,165 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 14:32:57,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063117339] [2020-09-17 14:32:57,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968984286] [2020-09-17 14:32:57,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:32:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:57,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:32:57,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:32:57,391 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 14:32:57,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:32:57,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:32:57,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956138573] [2020-09-17 14:32:57,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:32:57,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:57,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:32:57,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:32:57,393 INFO L87 Difference]: Start difference. First operand 9426 states and 43057 transitions. Second operand 16 states. [2020-09-17 14:32:58,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:32:58,730 INFO L93 Difference]: Finished difference Result 30145 states and 115754 transitions. [2020-09-17 14:32:58,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:32:58,731 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:32:58,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:32:58,813 INFO L225 Difference]: With dead ends: 30145 [2020-09-17 14:32:58,813 INFO L226 Difference]: Without dead ends: 30125 [2020-09-17 14:32:58,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:32:58,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30125 states. [2020-09-17 14:32:59,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30125 to 9338. [2020-09-17 14:32:59,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9338 states. [2020-09-17 14:32:59,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9338 states to 9338 states and 42582 transitions. [2020-09-17 14:32:59,292 INFO L78 Accepts]: Start accepts. Automaton has 9338 states and 42582 transitions. Word has length 25 [2020-09-17 14:32:59,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:32:59,292 INFO L479 AbstractCegarLoop]: Abstraction has 9338 states and 42582 transitions. [2020-09-17 14:32:59,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:32:59,292 INFO L276 IsEmpty]: Start isEmpty. Operand 9338 states and 42582 transitions. [2020-09-17 14:32:59,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:32:59,295 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:32:59,295 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:32:59,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-09-17 14:32:59,496 INFO L427 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]=== [2020-09-17 14:32:59,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:32:59,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1013144212, now seen corresponding path program 1 times [2020-09-17 14:32:59,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:32:59,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95093077] [2020-09-17 14:32:59,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:32:59,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:59,597 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 14:32:59,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95093077] [2020-09-17 14:32:59,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198308440] [2020-09-17 14:32:59,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:32:59,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:32:59,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:32:59,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:32:59,820 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 14:32:59,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:32:59,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:32:59,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685534750] [2020-09-17 14:32:59,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:32:59,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:32:59,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:32:59,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:32:59,822 INFO L87 Difference]: Start difference. First operand 9338 states and 42582 transitions. Second operand 16 states. [2020-09-17 14:33:00,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:00,994 INFO L93 Difference]: Finished difference Result 29696 states and 113916 transitions. [2020-09-17 14:33:00,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:33:00,995 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:33:00,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:01,070 INFO L225 Difference]: With dead ends: 29696 [2020-09-17 14:33:01,070 INFO L226 Difference]: Without dead ends: 29676 [2020-09-17 14:33:01,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:33:01,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29676 states. [2020-09-17 14:33:01,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29676 to 9291. [2020-09-17 14:33:01,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9291 states. [2020-09-17 14:33:01,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9291 states to 9291 states and 42295 transitions. [2020-09-17 14:33:01,781 INFO L78 Accepts]: Start accepts. Automaton has 9291 states and 42295 transitions. Word has length 25 [2020-09-17 14:33:01,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:01,781 INFO L479 AbstractCegarLoop]: Abstraction has 9291 states and 42295 transitions. [2020-09-17 14:33:01,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:33:01,781 INFO L276 IsEmpty]: Start isEmpty. Operand 9291 states and 42295 transitions. [2020-09-17 14:33:01,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:33:01,784 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:01,784 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:01,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-09-17 14:33:01,985 INFO L427 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]=== [2020-09-17 14:33:01,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:01,986 INFO L82 PathProgramCache]: Analyzing trace with hash 563583274, now seen corresponding path program 2 times [2020-09-17 14:33:01,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:01,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243777802] [2020-09-17 14:33:01,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:01,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:02,085 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 14:33:02,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243777802] [2020-09-17 14:33:02,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932793736] [2020-09-17 14:33:02,086 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:33:02,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 14:33:02,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:33:02,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:33:02,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:33:02,338 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 14:33:02,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:33:02,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:33:02,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056479546] [2020-09-17 14:33:02,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:33:02,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:02,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:33:02,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:33:02,340 INFO L87 Difference]: Start difference. First operand 9291 states and 42295 transitions. Second operand 16 states. [2020-09-17 14:33:03,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:03,525 INFO L93 Difference]: Finished difference Result 29267 states and 112142 transitions. [2020-09-17 14:33:03,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:33:03,525 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:33:03,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:03,609 INFO L225 Difference]: With dead ends: 29267 [2020-09-17 14:33:03,610 INFO L226 Difference]: Without dead ends: 29245 [2020-09-17 14:33:03,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:33:03,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29245 states. [2020-09-17 14:33:04,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29245 to 9288. [2020-09-17 14:33:04,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9288 states. [2020-09-17 14:33:04,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9288 states to 9288 states and 42242 transitions. [2020-09-17 14:33:04,088 INFO L78 Accepts]: Start accepts. Automaton has 9288 states and 42242 transitions. Word has length 25 [2020-09-17 14:33:04,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:04,089 INFO L479 AbstractCegarLoop]: Abstraction has 9288 states and 42242 transitions. [2020-09-17 14:33:04,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:33:04,089 INFO L276 IsEmpty]: Start isEmpty. Operand 9288 states and 42242 transitions. [2020-09-17 14:33:04,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:33:04,092 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:04,092 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:04,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-09-17 14:33:04,293 INFO L427 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]=== [2020-09-17 14:33:04,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:04,294 INFO L82 PathProgramCache]: Analyzing trace with hash 563576516, now seen corresponding path program 2 times [2020-09-17 14:33:04,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:04,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976066424] [2020-09-17 14:33:04,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:04,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:04,398 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 14:33:04,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976066424] [2020-09-17 14:33:04,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830229538] [2020-09-17 14:33:04,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:33:04,507 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 14:33:04,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:33:04,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:33:04,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:33:04,634 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 14:33:04,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:33:04,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:33:04,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118741960] [2020-09-17 14:33:04,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:33:04,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:04,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:33:04,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:33:04,636 INFO L87 Difference]: Start difference. First operand 9288 states and 42242 transitions. Second operand 16 states. [2020-09-17 14:33:06,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:06,028 INFO L93 Difference]: Finished difference Result 28920 states and 110796 transitions. [2020-09-17 14:33:06,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:33:06,029 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:33:06,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:06,109 INFO L225 Difference]: With dead ends: 28920 [2020-09-17 14:33:06,110 INFO L226 Difference]: Without dead ends: 28898 [2020-09-17 14:33:06,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:33:06,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28898 states. [2020-09-17 14:33:06,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28898 to 9176. [2020-09-17 14:33:06,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9176 states. [2020-09-17 14:33:06,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9176 states to 9176 states and 41695 transitions. [2020-09-17 14:33:06,631 INFO L78 Accepts]: Start accepts. Automaton has 9176 states and 41695 transitions. Word has length 25 [2020-09-17 14:33:06,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:06,631 INFO L479 AbstractCegarLoop]: Abstraction has 9176 states and 41695 transitions. [2020-09-17 14:33:06,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:33:06,631 INFO L276 IsEmpty]: Start isEmpty. Operand 9176 states and 41695 transitions. [2020-09-17 14:33:06,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:33:06,635 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:06,635 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:06,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:33:06,836 INFO L427 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]=== [2020-09-17 14:33:06,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:06,837 INFO L82 PathProgramCache]: Analyzing trace with hash -2052215638, now seen corresponding path program 3 times [2020-09-17 14:33:06,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:06,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973296889] [2020-09-17 14:33:06,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:06,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:06,945 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-17 14:33:06,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973296889] [2020-09-17 14:33:06,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881025464] [2020-09-17 14:33:06,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:33:07,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-09-17 14:33:07,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:33:07,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:33:07,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:33:07,350 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-17 14:33:07,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:33:07,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:33:07,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128702314] [2020-09-17 14:33:07,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:33:07,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:07,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:33:07,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:33:07,353 INFO L87 Difference]: Start difference. First operand 9176 states and 41695 transitions. Second operand 16 states. [2020-09-17 14:33:08,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:08,512 INFO L93 Difference]: Finished difference Result 29038 states and 111216 transitions. [2020-09-17 14:33:08,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:33:08,513 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:33:08,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:08,599 INFO L225 Difference]: With dead ends: 29038 [2020-09-17 14:33:08,599 INFO L226 Difference]: Without dead ends: 29018 [2020-09-17 14:33:08,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:33:08,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29018 states. [2020-09-17 14:33:09,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29018 to 9000. [2020-09-17 14:33:09,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9000 states. [2020-09-17 14:33:09,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9000 states to 9000 states and 40897 transitions. [2020-09-17 14:33:09,090 INFO L78 Accepts]: Start accepts. Automaton has 9000 states and 40897 transitions. Word has length 25 [2020-09-17 14:33:09,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:09,090 INFO L479 AbstractCegarLoop]: Abstraction has 9000 states and 40897 transitions. [2020-09-17 14:33:09,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:33:09,090 INFO L276 IsEmpty]: Start isEmpty. Operand 9000 states and 40897 transitions. [2020-09-17 14:33:09,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:33:09,094 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:09,094 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:09,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-09-17 14:33:09,295 INFO L427 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]=== [2020-09-17 14:33:09,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:09,295 INFO L82 PathProgramCache]: Analyzing trace with hash -275395741, now seen corresponding path program 1 times [2020-09-17 14:33:09,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:09,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923803526] [2020-09-17 14:33:09,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:09,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:09,407 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-17 14:33:09,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923803526] [2020-09-17 14:33:09,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25744406] [2020-09-17 14:33:09,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:33:09,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:09,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:33:09,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:33:09,649 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-17 14:33:09,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:33:09,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:33:09,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68299184] [2020-09-17 14:33:09,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:33:09,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:09,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:33:09,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:33:09,651 INFO L87 Difference]: Start difference. First operand 9000 states and 40897 transitions. Second operand 16 states. [2020-09-17 14:33:11,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:11,027 INFO L93 Difference]: Finished difference Result 29417 states and 113034 transitions. [2020-09-17 14:33:11,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:33:11,028 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:33:11,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:11,112 INFO L225 Difference]: With dead ends: 29417 [2020-09-17 14:33:11,112 INFO L226 Difference]: Without dead ends: 29397 [2020-09-17 14:33:11,113 INFO L675 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 [2020-09-17 14:33:11,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29397 states. [2020-09-17 14:33:11,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29397 to 8990. [2020-09-17 14:33:11,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8990 states. [2020-09-17 14:33:11,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8990 states to 8990 states and 40786 transitions. [2020-09-17 14:33:11,577 INFO L78 Accepts]: Start accepts. Automaton has 8990 states and 40786 transitions. Word has length 25 [2020-09-17 14:33:11,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:11,577 INFO L479 AbstractCegarLoop]: Abstraction has 8990 states and 40786 transitions. [2020-09-17 14:33:11,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:33:11,577 INFO L276 IsEmpty]: Start isEmpty. Operand 8990 states and 40786 transitions. [2020-09-17 14:33:11,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:33:11,581 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:11,581 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:11,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:33:11,782 INFO L427 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]=== [2020-09-17 14:33:11,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:11,782 INFO L82 PathProgramCache]: Analyzing trace with hash -724963437, now seen corresponding path program 2 times [2020-09-17 14:33:11,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:11,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927406232] [2020-09-17 14:33:11,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:11,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:11,895 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 14:33:11,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927406232] [2020-09-17 14:33:11,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525544949] [2020-09-17 14:33:11,896 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:33:11,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 14:33:11,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:33:11,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:33:11,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:33:12,123 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 14:33:12,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:33:12,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:33:12,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476577918] [2020-09-17 14:33:12,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:33:12,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:12,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:33:12,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:33:12,124 INFO L87 Difference]: Start difference. First operand 8990 states and 40786 transitions. Second operand 16 states. [2020-09-17 14:33:13,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:13,511 INFO L93 Difference]: Finished difference Result 29064 states and 111552 transitions. [2020-09-17 14:33:13,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:33:13,512 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:33:13,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:13,588 INFO L225 Difference]: With dead ends: 29064 [2020-09-17 14:33:13,588 INFO L226 Difference]: Without dead ends: 29037 [2020-09-17 14:33:13,588 INFO L675 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 [2020-09-17 14:33:13,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29037 states. [2020-09-17 14:33:14,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29037 to 8953. [2020-09-17 14:33:14,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8953 states. [2020-09-17 14:33:14,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8953 states to 8953 states and 40609 transitions. [2020-09-17 14:33:14,036 INFO L78 Accepts]: Start accepts. Automaton has 8953 states and 40609 transitions. Word has length 25 [2020-09-17 14:33:14,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:14,036 INFO L479 AbstractCegarLoop]: Abstraction has 8953 states and 40609 transitions. [2020-09-17 14:33:14,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:33:14,036 INFO L276 IsEmpty]: Start isEmpty. Operand 8953 states and 40609 transitions. [2020-09-17 14:33:14,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:33:14,040 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:14,040 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:14,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2020-09-17 14:33:14,241 INFO L427 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]=== [2020-09-17 14:33:14,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:14,242 INFO L82 PathProgramCache]: Analyzing trace with hash -724977108, now seen corresponding path program 4 times [2020-09-17 14:33:14,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:14,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052559042] [2020-09-17 14:33:14,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:14,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:14,346 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 14:33:14,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052559042] [2020-09-17 14:33:14,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365259037] [2020-09-17 14:33:14,347 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:33:14,446 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 14:33:14,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:33:14,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:33:14,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:33:14,582 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 14:33:14,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:33:14,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:33:14,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777788974] [2020-09-17 14:33:14,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:33:14,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:14,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:33:14,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:33:14,585 INFO L87 Difference]: Start difference. First operand 8953 states and 40609 transitions. Second operand 16 states. [2020-09-17 14:33:15,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:15,744 INFO L93 Difference]: Finished difference Result 28523 states and 109227 transitions. [2020-09-17 14:33:15,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:33:15,744 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:33:15,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:15,823 INFO L225 Difference]: With dead ends: 28523 [2020-09-17 14:33:15,823 INFO L226 Difference]: Without dead ends: 28501 [2020-09-17 14:33:15,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:33:15,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28501 states. [2020-09-17 14:33:16,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28501 to 8841. [2020-09-17 14:33:16,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8841 states. [2020-09-17 14:33:16,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8841 states to 8841 states and 40062 transitions. [2020-09-17 14:33:16,268 INFO L78 Accepts]: Start accepts. Automaton has 8841 states and 40062 transitions. Word has length 25 [2020-09-17 14:33:16,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:16,268 INFO L479 AbstractCegarLoop]: Abstraction has 8841 states and 40062 transitions. [2020-09-17 14:33:16,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:33:16,269 INFO L276 IsEmpty]: Start isEmpty. Operand 8841 states and 40062 transitions. [2020-09-17 14:33:16,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:33:16,273 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:16,273 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:16,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:33:16,474 INFO L427 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]=== [2020-09-17 14:33:16,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:16,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1969402905, now seen corresponding path program 3 times [2020-09-17 14:33:16,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:16,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222244045] [2020-09-17 14:33:16,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:16,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:16,578 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 14:33:16,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222244045] [2020-09-17 14:33:16,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116124982] [2020-09-17 14:33:16,579 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:33:16,675 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-17 14:33:16,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:33:16,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:33:16,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:33:16,793 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 14:33:16,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:33:16,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:33:16,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96199834] [2020-09-17 14:33:16,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:33:16,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:16,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:33:16,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:33:16,795 INFO L87 Difference]: Start difference. First operand 8841 states and 40062 transitions. Second operand 16 states. [2020-09-17 14:33:17,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:17,874 INFO L93 Difference]: Finished difference Result 28636 states and 109852 transitions. [2020-09-17 14:33:17,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:33:17,875 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:33:17,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:17,946 INFO L225 Difference]: With dead ends: 28636 [2020-09-17 14:33:17,946 INFO L226 Difference]: Without dead ends: 28616 [2020-09-17 14:33:17,946 INFO L675 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 [2020-09-17 14:33:18,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28616 states. [2020-09-17 14:33:18,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28616 to 8702. [2020-09-17 14:33:18,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8702 states. [2020-09-17 14:33:18,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8702 states to 8702 states and 39438 transitions. [2020-09-17 14:33:18,641 INFO L78 Accepts]: Start accepts. Automaton has 8702 states and 39438 transitions. Word has length 25 [2020-09-17 14:33:18,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:18,641 INFO L479 AbstractCegarLoop]: Abstraction has 8702 states and 39438 transitions. [2020-09-17 14:33:18,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:33:18,641 INFO L276 IsEmpty]: Start isEmpty. Operand 8702 states and 39438 transitions. [2020-09-17 14:33:18,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:33:18,644 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:18,645 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:18,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2020-09-17 14:33:18,850 INFO L427 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]=== [2020-09-17 14:33:18,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:18,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1576190868, now seen corresponding path program 3 times [2020-09-17 14:33:18,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:18,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880134537] [2020-09-17 14:33:18,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:18,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:18,955 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 14:33:18,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880134537] [2020-09-17 14:33:18,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716806393] [2020-09-17 14:33:18,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:33:19,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-17 14:33:19,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:33:19,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:33:19,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:33:19,216 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 14:33:19,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:33:19,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:33:19,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559777149] [2020-09-17 14:33:19,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:33:19,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:19,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:33:19,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:33:19,220 INFO L87 Difference]: Start difference. First operand 8702 states and 39438 transitions. Second operand 16 states. [2020-09-17 14:33:20,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:20,368 INFO L93 Difference]: Finished difference Result 28297 states and 108461 transitions. [2020-09-17 14:33:20,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:33:20,368 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:33:20,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:20,450 INFO L225 Difference]: With dead ends: 28297 [2020-09-17 14:33:20,451 INFO L226 Difference]: Without dead ends: 28277 [2020-09-17 14:33:20,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:33:20,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28277 states. [2020-09-17 14:33:20,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28277 to 8596. [2020-09-17 14:33:20,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8596 states. [2020-09-17 14:33:20,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 38978 transitions. [2020-09-17 14:33:20,911 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 38978 transitions. Word has length 25 [2020-09-17 14:33:20,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:20,911 INFO L479 AbstractCegarLoop]: Abstraction has 8596 states and 38978 transitions. [2020-09-17 14:33:20,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:33:20,911 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 38978 transitions. [2020-09-17 14:33:20,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:33:20,915 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:20,915 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:21,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:33:21,116 INFO L427 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]=== [2020-09-17 14:33:21,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:21,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1673729315, now seen corresponding path program 4 times [2020-09-17 14:33:21,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:21,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271224200] [2020-09-17 14:33:21,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:21,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:21,222 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 14:33:21,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271224200] [2020-09-17 14:33:21,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394405772] [2020-09-17 14:33:21,223 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:33:21,327 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 14:33:21,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:33:21,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:33:21,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:33:21,459 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 14:33:21,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:33:21,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:33:21,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592063500] [2020-09-17 14:33:21,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:33:21,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:21,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:33:21,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:33:21,461 INFO L87 Difference]: Start difference. First operand 8596 states and 38978 transitions. Second operand 16 states. [2020-09-17 14:33:22,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:22,843 INFO L93 Difference]: Finished difference Result 28565 states and 109596 transitions. [2020-09-17 14:33:22,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:33:22,844 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:33:22,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:22,937 INFO L225 Difference]: With dead ends: 28565 [2020-09-17 14:33:22,938 INFO L226 Difference]: Without dead ends: 28538 [2020-09-17 14:33:22,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:33:23,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28538 states. [2020-09-17 14:33:23,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28538 to 8563. [2020-09-17 14:33:23,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8563 states. [2020-09-17 14:33:23,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8563 states to 8563 states and 38809 transitions. [2020-09-17 14:33:23,415 INFO L78 Accepts]: Start accepts. Automaton has 8563 states and 38809 transitions. Word has length 25 [2020-09-17 14:33:23,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:23,416 INFO L479 AbstractCegarLoop]: Abstraction has 8563 states and 38809 transitions. [2020-09-17 14:33:23,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:33:23,416 INFO L276 IsEmpty]: Start isEmpty. Operand 8563 states and 38809 transitions. [2020-09-17 14:33:23,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:33:23,419 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:23,419 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:23,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2020-09-17 14:33:23,620 INFO L427 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]=== [2020-09-17 14:33:23,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:23,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1673708886, now seen corresponding path program 4 times [2020-09-17 14:33:23,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:23,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464706254] [2020-09-17 14:33:23,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:23,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:23,717 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 14:33:23,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464706254] [2020-09-17 14:33:23,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991780762] [2020-09-17 14:33:23,717 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:33:23,831 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 14:33:23,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:33:23,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:33:23,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:33:23,998 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 14:33:23,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:33:23,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:33:23,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447482096] [2020-09-17 14:33:24,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:33:24,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:24,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:33:24,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:33:24,001 INFO L87 Difference]: Start difference. First operand 8563 states and 38809 transitions. Second operand 16 states. [2020-09-17 14:33:25,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:25,384 INFO L93 Difference]: Finished difference Result 28213 states and 108237 transitions. [2020-09-17 14:33:25,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:33:25,385 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:33:25,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:25,460 INFO L225 Difference]: With dead ends: 28213 [2020-09-17 14:33:25,460 INFO L226 Difference]: Without dead ends: 28186 [2020-09-17 14:33:25,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:33:25,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28186 states. [2020-09-17 14:33:26,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28186 to 8421. [2020-09-17 14:33:26,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8421 states. [2020-09-17 14:33:26,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8421 states to 8421 states and 38146 transitions. [2020-09-17 14:33:26,076 INFO L78 Accepts]: Start accepts. Automaton has 8421 states and 38146 transitions. Word has length 25 [2020-09-17 14:33:26,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:26,076 INFO L479 AbstractCegarLoop]: Abstraction has 8421 states and 38146 transitions. [2020-09-17 14:33:26,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:33:26,076 INFO L276 IsEmpty]: Start isEmpty. Operand 8421 states and 38146 transitions. [2020-09-17 14:33:26,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:33:26,080 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:26,080 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:26,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:33:26,281 INFO L427 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]=== [2020-09-17 14:33:26,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:26,281 INFO L82 PathProgramCache]: Analyzing trace with hash -857609261, now seen corresponding path program 5 times [2020-09-17 14:33:26,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:26,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405337679] [2020-09-17 14:33:26,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:26,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:26,387 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:33:26,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405337679] [2020-09-17 14:33:26,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:33:26,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 14:33:26,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955620152] [2020-09-17 14:33:26,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 14:33:26,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:26,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 14:33:26,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 14:33:26,389 INFO L87 Difference]: Start difference. First operand 8421 states and 38146 transitions. Second operand 9 states. [2020-09-17 14:33:27,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:27,525 INFO L93 Difference]: Finished difference Result 28226 states and 108274 transitions. [2020-09-17 14:33:27,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:33:27,526 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 14:33:27,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:27,605 INFO L225 Difference]: With dead ends: 28226 [2020-09-17 14:33:27,606 INFO L226 Difference]: Without dead ends: 28206 [2020-09-17 14:33:27,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 14:33:27,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28206 states. [2020-09-17 14:33:28,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28206 to 8277. [2020-09-17 14:33:28,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8277 states. [2020-09-17 14:33:28,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8277 states to 8277 states and 37487 transitions. [2020-09-17 14:33:28,045 INFO L78 Accepts]: Start accepts. Automaton has 8277 states and 37487 transitions. Word has length 25 [2020-09-17 14:33:28,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:28,046 INFO L479 AbstractCegarLoop]: Abstraction has 8277 states and 37487 transitions. [2020-09-17 14:33:28,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 14:33:28,046 INFO L276 IsEmpty]: Start isEmpty. Operand 8277 states and 37487 transitions. [2020-09-17 14:33:28,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:33:28,050 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:28,050 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:28,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-09-17 14:33:28,050 INFO L427 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]=== [2020-09-17 14:33:28,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:28,051 INFO L82 PathProgramCache]: Analyzing trace with hash -857622932, now seen corresponding path program 5 times [2020-09-17 14:33:28,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:28,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430486154] [2020-09-17 14:33:28,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:28,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:28,152 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:33:28,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430486154] [2020-09-17 14:33:28,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:33:28,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 14:33:28,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886136137] [2020-09-17 14:33:28,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 14:33:28,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:28,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 14:33:28,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 14:33:28,154 INFO L87 Difference]: Start difference. First operand 8277 states and 37487 transitions. Second operand 9 states. [2020-09-17 14:33:29,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:29,220 INFO L93 Difference]: Finished difference Result 27801 states and 106552 transitions. [2020-09-17 14:33:29,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:33:29,220 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 14:33:29,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:29,294 INFO L225 Difference]: With dead ends: 27801 [2020-09-17 14:33:29,294 INFO L226 Difference]: Without dead ends: 27781 [2020-09-17 14:33:29,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 14:33:29,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27781 states. [2020-09-17 14:33:29,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27781 to 8127. [2020-09-17 14:33:29,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8127 states. [2020-09-17 14:33:29,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8127 states to 8127 states and 36806 transitions. [2020-09-17 14:33:29,710 INFO L78 Accepts]: Start accepts. Automaton has 8127 states and 36806 transitions. Word has length 25 [2020-09-17 14:33:29,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:29,710 INFO L479 AbstractCegarLoop]: Abstraction has 8127 states and 36806 transitions. [2020-09-17 14:33:29,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 14:33:29,710 INFO L276 IsEmpty]: Start isEmpty. Operand 8127 states and 36806 transitions. [2020-09-17 14:33:29,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:33:29,713 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:29,713 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:29,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-09-17 14:33:29,714 INFO L427 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]=== [2020-09-17 14:33:29,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:29,714 INFO L82 PathProgramCache]: Analyzing trace with hash -864096941, now seen corresponding path program 6 times [2020-09-17 14:33:29,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:29,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30763675] [2020-09-17 14:33:29,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:29,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:29,826 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:33:29,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30763675] [2020-09-17 14:33:29,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:33:29,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 14:33:29,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979887370] [2020-09-17 14:33:29,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 14:33:29,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:29,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 14:33:29,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 14:33:29,828 INFO L87 Difference]: Start difference. First operand 8127 states and 36806 transitions. Second operand 9 states. [2020-09-17 14:33:30,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:30,991 INFO L93 Difference]: Finished difference Result 27548 states and 105447 transitions. [2020-09-17 14:33:30,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:33:30,992 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 14:33:30,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:31,073 INFO L225 Difference]: With dead ends: 27548 [2020-09-17 14:33:31,073 INFO L226 Difference]: Without dead ends: 27521 [2020-09-17 14:33:31,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 14:33:31,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27521 states. [2020-09-17 14:33:31,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27521 to 7841. [2020-09-17 14:33:31,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7841 states. [2020-09-17 14:33:31,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7841 states to 7841 states and 35578 transitions. [2020-09-17 14:33:31,677 INFO L78 Accepts]: Start accepts. Automaton has 7841 states and 35578 transitions. Word has length 25 [2020-09-17 14:33:31,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:31,678 INFO L479 AbstractCegarLoop]: Abstraction has 7841 states and 35578 transitions. [2020-09-17 14:33:31,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 14:33:31,678 INFO L276 IsEmpty]: Start isEmpty. Operand 7841 states and 35578 transitions. [2020-09-17 14:33:31,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:33:31,681 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:31,681 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:31,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-09-17 14:33:31,682 INFO L427 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]=== [2020-09-17 14:33:31,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:31,682 INFO L82 PathProgramCache]: Analyzing trace with hash -864117370, now seen corresponding path program 5 times [2020-09-17 14:33:31,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:31,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296784913] [2020-09-17 14:33:31,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:31,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:31,778 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:33:31,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296784913] [2020-09-17 14:33:31,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:33:31,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 14:33:31,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582098543] [2020-09-17 14:33:31,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 14:33:31,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:31,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 14:33:31,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 14:33:31,779 INFO L87 Difference]: Start difference. First operand 7841 states and 35578 transitions. Second operand 9 states. [2020-09-17 14:33:32,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:32,834 INFO L93 Difference]: Finished difference Result 27167 states and 103966 transitions. [2020-09-17 14:33:32,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:33:32,835 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 14:33:32,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:32,913 INFO L225 Difference]: With dead ends: 27167 [2020-09-17 14:33:32,913 INFO L226 Difference]: Without dead ends: 27147 [2020-09-17 14:33:32,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 14:33:33,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27147 states. [2020-09-17 14:33:33,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27147 to 7743. [2020-09-17 14:33:33,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7743 states. [2020-09-17 14:33:33,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7743 states to 7743 states and 35142 transitions. [2020-09-17 14:33:33,364 INFO L78 Accepts]: Start accepts. Automaton has 7743 states and 35142 transitions. Word has length 25 [2020-09-17 14:33:33,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:33,365 INFO L479 AbstractCegarLoop]: Abstraction has 7743 states and 35142 transitions. [2020-09-17 14:33:33,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 14:33:33,365 INFO L276 IsEmpty]: Start isEmpty. Operand 7743 states and 35142 transitions. [2020-09-17 14:33:33,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:33:33,368 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:33,368 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:33,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-09-17 14:33:33,368 INFO L427 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]=== [2020-09-17 14:33:33,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:33,368 INFO L82 PathProgramCache]: Analyzing trace with hash -877234772, now seen corresponding path program 6 times [2020-09-17 14:33:33,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:33,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49306283] [2020-09-17 14:33:33,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:33,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:33,474 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:33:33,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49306283] [2020-09-17 14:33:33,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:33:33,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 14:33:33,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62876958] [2020-09-17 14:33:33,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 14:33:33,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:33,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 14:33:33,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 14:33:33,476 INFO L87 Difference]: Start difference. First operand 7743 states and 35142 transitions. Second operand 9 states. [2020-09-17 14:33:34,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:34,546 INFO L93 Difference]: Finished difference Result 26955 states and 103085 transitions. [2020-09-17 14:33:34,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:33:34,547 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 14:33:34,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:34,626 INFO L225 Difference]: With dead ends: 26955 [2020-09-17 14:33:34,627 INFO L226 Difference]: Without dead ends: 26928 [2020-09-17 14:33:34,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 14:33:34,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26928 states. [2020-09-17 14:33:35,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26928 to 7532. [2020-09-17 14:33:35,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7532 states. [2020-09-17 14:33:35,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7532 states to 7532 states and 34256 transitions. [2020-09-17 14:33:35,068 INFO L78 Accepts]: Start accepts. Automaton has 7532 states and 34256 transitions. Word has length 25 [2020-09-17 14:33:35,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:35,068 INFO L479 AbstractCegarLoop]: Abstraction has 7532 states and 34256 transitions. [2020-09-17 14:33:35,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 14:33:35,068 INFO L276 IsEmpty]: Start isEmpty. Operand 7532 states and 34256 transitions. [2020-09-17 14:33:35,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:33:35,072 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:35,072 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:35,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-09-17 14:33:35,072 INFO L427 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]=== [2020-09-17 14:33:35,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:35,072 INFO L82 PathProgramCache]: Analyzing trace with hash -877241530, now seen corresponding path program 6 times [2020-09-17 14:33:35,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:35,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487046437] [2020-09-17 14:33:35,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:35,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:35,175 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:33:35,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487046437] [2020-09-17 14:33:35,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:33:35,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 14:33:35,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808114082] [2020-09-17 14:33:35,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 14:33:35,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:35,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 14:33:35,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 14:33:35,177 INFO L87 Difference]: Start difference. First operand 7532 states and 34256 transitions. Second operand 9 states. [2020-09-17 14:33:36,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:36,410 INFO L93 Difference]: Finished difference Result 26632 states and 101828 transitions. [2020-09-17 14:33:36,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:33:36,410 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 14:33:36,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:36,485 INFO L225 Difference]: With dead ends: 26632 [2020-09-17 14:33:36,485 INFO L226 Difference]: Without dead ends: 26605 [2020-09-17 14:33:36,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 14:33:36,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26605 states. [2020-09-17 14:33:36,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26605 to 7269. [2020-09-17 14:33:36,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7269 states. [2020-09-17 14:33:36,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7269 states to 7269 states and 33154 transitions. [2020-09-17 14:33:36,903 INFO L78 Accepts]: Start accepts. Automaton has 7269 states and 33154 transitions. Word has length 25 [2020-09-17 14:33:36,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:36,903 INFO L479 AbstractCegarLoop]: Abstraction has 7269 states and 33154 transitions. [2020-09-17 14:33:36,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 14:33:36,904 INFO L276 IsEmpty]: Start isEmpty. Operand 7269 states and 33154 transitions. [2020-09-17 14:33:36,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:33:36,907 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:36,907 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:36,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-09-17 14:33:36,907 INFO L427 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]=== [2020-09-17 14:33:36,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:36,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1311164244, now seen corresponding path program 1 times [2020-09-17 14:33:36,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:36,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436877277] [2020-09-17 14:33:36,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:36,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:36,971 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-17 14:33:36,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436877277] [2020-09-17 14:33:36,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:33:36,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 14:33:36,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78098919] [2020-09-17 14:33:36,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 14:33:36,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:36,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 14:33:36,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 14:33:36,973 INFO L87 Difference]: Start difference. First operand 7269 states and 33154 transitions. Second operand 5 states. [2020-09-17 14:33:37,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:37,171 INFO L93 Difference]: Finished difference Result 11919 states and 51979 transitions. [2020-09-17 14:33:37,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 14:33:37,171 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-09-17 14:33:37,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:37,207 INFO L225 Difference]: With dead ends: 11919 [2020-09-17 14:33:37,207 INFO L226 Difference]: Without dead ends: 11887 [2020-09-17 14:33:37,207 INFO L675 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 [2020-09-17 14:33:37,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11887 states. [2020-09-17 14:33:37,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11887 to 8560. [2020-09-17 14:33:37,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8560 states. [2020-09-17 14:33:37,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8560 states to 8560 states and 38495 transitions. [2020-09-17 14:33:37,510 INFO L78 Accepts]: Start accepts. Automaton has 8560 states and 38495 transitions. Word has length 25 [2020-09-17 14:33:37,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:37,511 INFO L479 AbstractCegarLoop]: Abstraction has 8560 states and 38495 transitions. [2020-09-17 14:33:37,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 14:33:37,511 INFO L276 IsEmpty]: Start isEmpty. Operand 8560 states and 38495 transitions. [2020-09-17 14:33:37,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-17 14:33:37,515 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:37,516 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:37,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-09-17 14:33:37,516 INFO L427 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]=== [2020-09-17 14:33:37,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:37,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1986416772, now seen corresponding path program 1 times [2020-09-17 14:33:37,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:37,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353081260] [2020-09-17 14:33:37,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:37,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 14:33:37,529 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 14:33:37,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 14:33:37,671 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 14:33:37,680 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-17 14:33:37,680 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-17 14:33:37,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-09-17 14:33:37,681 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-17 14:33:37,681 WARN L363 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-17 14:33:37,681 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-09-17 14:33:37,698 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,698 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,698 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,698 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,699 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,699 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,699 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,699 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,699 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,699 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,699 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,700 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,700 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,700 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,700 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,700 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,700 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,700 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,701 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,701 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,701 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,701 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,701 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,701 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,702 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,702 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,702 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,702 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,702 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,702 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,702 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,703 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,703 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,703 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,703 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,703 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,703 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,703 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,704 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,704 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,704 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,704 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,704 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,705 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,705 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,705 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,705 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,705 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,705 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,705 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,706 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,706 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,706 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,706 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,706 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,706 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,706 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,707 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,707 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,707 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,707 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,707 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,707 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,708 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,708 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,708 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,708 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,708 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,708 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,708 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,709 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,709 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,709 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,709 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,709 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,709 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,710 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,710 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,710 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,710 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,710 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,710 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,710 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,711 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,711 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,711 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,711 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,711 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,711 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,711 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,711 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,712 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,712 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,712 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,712 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,712 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,712 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,713 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,713 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,713 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,713 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,713 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,713 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,714 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,714 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,714 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,714 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,715 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,716 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,716 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,716 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,716 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,718 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,718 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,718 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,718 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,718 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,719 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,719 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,720 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,720 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,720 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,721 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,721 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,721 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,722 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,722 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,723 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,723 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,723 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,724 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,724 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,725 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,725 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,725 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,725 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,725 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,726 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,727 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,727 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,727 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,727 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,727 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,727 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,729 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,729 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,729 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,729 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,729 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,729 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,730 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,731 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,731 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,731 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,731 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,731 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,733 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,733 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,733 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,733 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,733 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,733 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,734 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,735 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,735 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,735 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,735 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,735 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:33:37,736 INFO L251 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-09-17 14:33:37,737 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 14:33:37,737 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 14:33:37,737 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-17 14:33:37,737 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 14:33:37,737 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 14:33:37,737 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 14:33:37,737 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 14:33:37,738 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 14:33:37,739 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 156 places, 138 transitions, 396 flow [2020-09-17 14:33:37,739 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 156 places, 138 transitions, 396 flow [2020-09-17 14:33:37,757 INFO L129 PetriNetUnfolder]: 9/173 cut-off events. [2020-09-17 14:33:37,758 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-09-17 14:33:37,759 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. [2020-09-17 14:33:37,764 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 156 places, 138 transitions, 396 flow [2020-09-17 14:33:37,781 INFO L129 PetriNetUnfolder]: 9/173 cut-off events. [2020-09-17 14:33:37,782 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-09-17 14:33:37,783 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. [2020-09-17 14:33:37,788 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2832 [2020-09-17 14:33:37,788 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-17 14:33:40,140 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2020-09-17 14:33:40,510 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-09-17 14:33:40,700 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-09-17 14:33:40,706 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3678 [2020-09-17 14:33:40,706 INFO L214 etLargeBlockEncoding]: Total number of compositions: 113 [2020-09-17 14:33:40,707 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 45 transitions, 210 flow [2020-09-17 14:33:42,411 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 18584 states. [2020-09-17 14:33:42,411 INFO L276 IsEmpty]: Start isEmpty. Operand 18584 states. [2020-09-17 14:33:42,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-17 14:33:42,412 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:42,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-17 14:33:42,412 INFO L427 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]=== [2020-09-17 14:33:42,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:42,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1298891, now seen corresponding path program 1 times [2020-09-17 14:33:42,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:42,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833666045] [2020-09-17 14:33:42,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:42,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:33:42,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833666045] [2020-09-17 14:33:42,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:33:42,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-17 14:33:42,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965146154] [2020-09-17 14:33:42,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 14:33:42,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:42,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 14:33:42,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 14:33:42,439 INFO L87 Difference]: Start difference. First operand 18584 states. Second operand 3 states. [2020-09-17 14:33:42,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:42,613 INFO L93 Difference]: Finished difference Result 17885 states and 92755 transitions. [2020-09-17 14:33:42,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 14:33:42,614 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-17 14:33:42,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:42,675 INFO L225 Difference]: With dead ends: 17885 [2020-09-17 14:33:42,676 INFO L226 Difference]: Without dead ends: 16791 [2020-09-17 14:33:42,676 INFO L675 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 [2020-09-17 14:33:43,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16791 states. [2020-09-17 14:33:43,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16791 to 16791. [2020-09-17 14:33:43,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16791 states. [2020-09-17 14:33:43,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16791 states to 16791 states and 86558 transitions. [2020-09-17 14:33:43,505 INFO L78 Accepts]: Start accepts. Automaton has 16791 states and 86558 transitions. Word has length 3 [2020-09-17 14:33:43,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:43,505 INFO L479 AbstractCegarLoop]: Abstraction has 16791 states and 86558 transitions. [2020-09-17 14:33:43,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 14:33:43,505 INFO L276 IsEmpty]: Start isEmpty. Operand 16791 states and 86558 transitions. [2020-09-17 14:33:43,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-17 14:33:43,505 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:43,506 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:43,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-09-17 14:33:43,506 INFO L427 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]=== [2020-09-17 14:33:43,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:43,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1091574945, now seen corresponding path program 1 times [2020-09-17 14:33:43,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:43,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554663622] [2020-09-17 14:33:43,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:43,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:43,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:33:43,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554663622] [2020-09-17 14:33:43,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:33:43,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 14:33:43,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950265470] [2020-09-17 14:33:43,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 14:33:43,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:43,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 14:33:43,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 14:33:43,544 INFO L87 Difference]: Start difference. First operand 16791 states and 86558 transitions. Second operand 5 states. [2020-09-17 14:33:44,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:44,242 INFO L93 Difference]: Finished difference Result 30985 states and 150574 transitions. [2020-09-17 14:33:44,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 14:33:44,243 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-17 14:33:44,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:44,361 INFO L225 Difference]: With dead ends: 30985 [2020-09-17 14:33:44,361 INFO L226 Difference]: Without dead ends: 30977 [2020-09-17 14:33:44,362 INFO L675 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 [2020-09-17 14:33:44,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30977 states. [2020-09-17 14:33:45,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30977 to 19868. [2020-09-17 14:33:45,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19868 states. [2020-09-17 14:33:45,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19868 states to 19868 states and 103363 transitions. [2020-09-17 14:33:45,494 INFO L78 Accepts]: Start accepts. Automaton has 19868 states and 103363 transitions. Word has length 9 [2020-09-17 14:33:45,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:45,494 INFO L479 AbstractCegarLoop]: Abstraction has 19868 states and 103363 transitions. [2020-09-17 14:33:45,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 14:33:45,494 INFO L276 IsEmpty]: Start isEmpty. Operand 19868 states and 103363 transitions. [2020-09-17 14:33:45,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-17 14:33:45,495 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:45,495 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:45,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-09-17 14:33:45,495 INFO L427 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]=== [2020-09-17 14:33:45,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:45,496 INFO L82 PathProgramCache]: Analyzing trace with hash -231509072, now seen corresponding path program 1 times [2020-09-17 14:33:45,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:45,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666411471] [2020-09-17 14:33:45,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:45,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:45,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:33:45,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666411471] [2020-09-17 14:33:45,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:33:45,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 14:33:45,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639763541] [2020-09-17 14:33:45,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 14:33:45,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:45,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 14:33:45,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 14:33:45,538 INFO L87 Difference]: Start difference. First operand 19868 states and 103363 transitions. Second operand 5 states. [2020-09-17 14:33:45,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:45,871 INFO L93 Difference]: Finished difference Result 36296 states and 178836 transitions. [2020-09-17 14:33:45,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 14:33:45,872 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-17 14:33:45,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:45,999 INFO L225 Difference]: With dead ends: 36296 [2020-09-17 14:33:45,999 INFO L226 Difference]: Without dead ends: 36280 [2020-09-17 14:33:45,999 INFO L675 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 [2020-09-17 14:33:46,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36280 states. [2020-09-17 14:33:47,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36280 to 23806. [2020-09-17 14:33:47,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23806 states. [2020-09-17 14:33:47,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23806 states to 23806 states and 125455 transitions. [2020-09-17 14:33:47,348 INFO L78 Accepts]: Start accepts. Automaton has 23806 states and 125455 transitions. Word has length 13 [2020-09-17 14:33:47,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:47,348 INFO L479 AbstractCegarLoop]: Abstraction has 23806 states and 125455 transitions. [2020-09-17 14:33:47,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 14:33:47,349 INFO L276 IsEmpty]: Start isEmpty. Operand 23806 states and 125455 transitions. [2020-09-17 14:33:47,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 14:33:47,349 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:47,349 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:47,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-09-17 14:33:47,349 INFO L427 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]=== [2020-09-17 14:33:47,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:47,350 INFO L82 PathProgramCache]: Analyzing trace with hash -588793474, now seen corresponding path program 1 times [2020-09-17 14:33:47,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:47,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845912455] [2020-09-17 14:33:47,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:47,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:47,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:33:47,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845912455] [2020-09-17 14:33:47,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476460810] [2020-09-17 14:33:47,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:33:49,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:49,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 14:33:49,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:33:49,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:33:49,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:33:49,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 14:33:49,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105501915] [2020-09-17 14:33:49,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 14:33:49,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:49,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 14:33:49,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-17 14:33:49,568 INFO L87 Difference]: Start difference. First operand 23806 states and 125455 transitions. Second operand 12 states. [2020-09-17 14:33:50,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:50,400 INFO L93 Difference]: Finished difference Result 56720 states and 262685 transitions. [2020-09-17 14:33:50,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:33:50,401 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-09-17 14:33:50,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:50,633 INFO L225 Difference]: With dead ends: 56720 [2020-09-17 14:33:50,634 INFO L226 Difference]: Without dead ends: 56704 [2020-09-17 14:33:50,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:33:51,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56704 states. [2020-09-17 14:33:52,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56704 to 23629. [2020-09-17 14:33:52,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23629 states. [2020-09-17 14:33:52,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23629 states to 23629 states and 124418 transitions. [2020-09-17 14:33:52,284 INFO L78 Accepts]: Start accepts. Automaton has 23629 states and 124418 transitions. Word has length 15 [2020-09-17 14:33:52,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:52,284 INFO L479 AbstractCegarLoop]: Abstraction has 23629 states and 124418 transitions. [2020-09-17 14:33:52,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 14:33:52,285 INFO L276 IsEmpty]: Start isEmpty. Operand 23629 states and 124418 transitions. [2020-09-17 14:33:52,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 14:33:52,285 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:52,285 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:52,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-09-17 14:33:52,486 INFO L427 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]=== [2020-09-17 14:33:52,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:52,487 INFO L82 PathProgramCache]: Analyzing trace with hash 858081470, now seen corresponding path program 2 times [2020-09-17 14:33:52,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:52,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641693685] [2020-09-17 14:33:52,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:52,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:52,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:33:52,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641693685] [2020-09-17 14:33:52,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:33:52,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 14:33:52,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817812693] [2020-09-17 14:33:52,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 14:33:52,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:52,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 14:33:52,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:33:52,547 INFO L87 Difference]: Start difference. First operand 23629 states and 124418 transitions. Second operand 7 states. [2020-09-17 14:33:53,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:53,262 INFO L93 Difference]: Finished difference Result 58078 states and 269185 transitions. [2020-09-17 14:33:53,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:33:53,262 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-17 14:33:53,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:53,472 INFO L225 Difference]: With dead ends: 58078 [2020-09-17 14:33:53,472 INFO L226 Difference]: Without dead ends: 58061 [2020-09-17 14:33:53,473 INFO L675 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 [2020-09-17 14:33:54,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58061 states. [2020-09-17 14:33:55,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58061 to 23109. [2020-09-17 14:33:55,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23109 states. [2020-09-17 14:33:55,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23109 states to 23109 states and 121651 transitions. [2020-09-17 14:33:55,622 INFO L78 Accepts]: Start accepts. Automaton has 23109 states and 121651 transitions. Word has length 15 [2020-09-17 14:33:55,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:55,622 INFO L479 AbstractCegarLoop]: Abstraction has 23109 states and 121651 transitions. [2020-09-17 14:33:55,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 14:33:55,622 INFO L276 IsEmpty]: Start isEmpty. Operand 23109 states and 121651 transitions. [2020-09-17 14:33:55,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-17 14:33:55,623 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:55,623 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:55,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2020-09-17 14:33:55,623 INFO L427 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]=== [2020-09-17 14:33:55,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:55,623 INFO L82 PathProgramCache]: Analyzing trace with hash 704376303, now seen corresponding path program 1 times [2020-09-17 14:33:55,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:55,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064005645] [2020-09-17 14:33:55,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:55,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:55,672 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:33:55,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064005645] [2020-09-17 14:33:55,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:33:55,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 14:33:55,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35924179] [2020-09-17 14:33:55,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 14:33:55,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:55,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 14:33:55,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 14:33:55,674 INFO L87 Difference]: Start difference. First operand 23109 states and 121651 transitions. Second operand 5 states. [2020-09-17 14:33:56,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:56,185 INFO L93 Difference]: Finished difference Result 41885 states and 209629 transitions. [2020-09-17 14:33:56,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 14:33:56,186 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-17 14:33:56,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:56,337 INFO L225 Difference]: With dead ends: 41885 [2020-09-17 14:33:56,337 INFO L226 Difference]: Without dead ends: 41856 [2020-09-17 14:33:56,338 INFO L675 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 [2020-09-17 14:33:57,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41856 states. [2020-09-17 14:33:57,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41856 to 28237. [2020-09-17 14:33:57,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28237 states. [2020-09-17 14:33:57,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28237 states to 28237 states and 150261 transitions. [2020-09-17 14:33:57,815 INFO L78 Accepts]: Start accepts. Automaton has 28237 states and 150261 transitions. Word has length 17 [2020-09-17 14:33:57,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:33:57,815 INFO L479 AbstractCegarLoop]: Abstraction has 28237 states and 150261 transitions. [2020-09-17 14:33:57,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 14:33:57,815 INFO L276 IsEmpty]: Start isEmpty. Operand 28237 states and 150261 transitions. [2020-09-17 14:33:57,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 14:33:57,816 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:33:57,816 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:33:57,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2020-09-17 14:33:57,817 INFO L427 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]=== [2020-09-17 14:33:57,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:33:57,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1918672061, now seen corresponding path program 1 times [2020-09-17 14:33:57,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:33:57,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878487021] [2020-09-17 14:33:57,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:33:57,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:57,883 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 14:33:57,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878487021] [2020-09-17 14:33:57,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397944530] [2020-09-17 14:33:57,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:33:57,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:33:57,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 14:33:57,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:33:58,574 WARN L193 SmtUtils]: Spent 554.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2020-09-17 14:33:58,625 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 14:33:58,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:33:58,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 14:33:58,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247890877] [2020-09-17 14:33:58,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 14:33:58,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:33:58,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 14:33:58,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-17 14:33:58,627 INFO L87 Difference]: Start difference. First operand 28237 states and 150261 transitions. Second operand 12 states. [2020-09-17 14:33:59,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:33:59,444 INFO L93 Difference]: Finished difference Result 66831 states and 314874 transitions. [2020-09-17 14:33:59,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:33:59,445 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-17 14:33:59,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:33:59,689 INFO L225 Difference]: With dead ends: 66831 [2020-09-17 14:33:59,689 INFO L226 Difference]: Without dead ends: 66807 [2020-09-17 14:33:59,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:34:00,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66807 states. [2020-09-17 14:34:01,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66807 to 28673. [2020-09-17 14:34:01,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28673 states. [2020-09-17 14:34:01,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28673 states to 28673 states and 152375 transitions. [2020-09-17 14:34:01,643 INFO L78 Accepts]: Start accepts. Automaton has 28673 states and 152375 transitions. Word has length 19 [2020-09-17 14:34:01,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:34:01,643 INFO L479 AbstractCegarLoop]: Abstraction has 28673 states and 152375 transitions. [2020-09-17 14:34:01,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 14:34:01,644 INFO L276 IsEmpty]: Start isEmpty. Operand 28673 states and 152375 transitions. [2020-09-17 14:34:01,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 14:34:01,645 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:34:01,645 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:34:01,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2020-09-17 14:34:01,859 INFO L427 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]=== [2020-09-17 14:34:01,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:34:01,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1064014108, now seen corresponding path program 1 times [2020-09-17 14:34:01,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:34:01,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682812809] [2020-09-17 14:34:01,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:34:01,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:34:01,926 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:34:01,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682812809] [2020-09-17 14:34:01,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927946884] [2020-09-17 14:34:01,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:34:02,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:34:02,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 14:34:02,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:34:02,128 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:34:02,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:34:02,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 14:34:02,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972961662] [2020-09-17 14:34:02,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 14:34:02,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:34:02,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 14:34:02,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-17 14:34:02,130 INFO L87 Difference]: Start difference. First operand 28673 states and 152375 transitions. Second operand 12 states. [2020-09-17 14:34:02,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:34:02,982 INFO L93 Difference]: Finished difference Result 69484 states and 328264 transitions. [2020-09-17 14:34:02,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:34:02,983 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-17 14:34:02,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:34:03,241 INFO L225 Difference]: With dead ends: 69484 [2020-09-17 14:34:03,242 INFO L226 Difference]: Without dead ends: 69451 [2020-09-17 14:34:03,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:34:04,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69451 states. [2020-09-17 14:34:05,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69451 to 28873. [2020-09-17 14:34:05,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28873 states. [2020-09-17 14:34:05,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28873 states to 28873 states and 153454 transitions. [2020-09-17 14:34:05,735 INFO L78 Accepts]: Start accepts. Automaton has 28873 states and 153454 transitions. Word has length 19 [2020-09-17 14:34:05,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:34:05,735 INFO L479 AbstractCegarLoop]: Abstraction has 28873 states and 153454 transitions. [2020-09-17 14:34:05,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 14:34:05,736 INFO L276 IsEmpty]: Start isEmpty. Operand 28873 states and 153454 transitions. [2020-09-17 14:34:05,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 14:34:05,737 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:34:05,737 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:34:05,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:34:05,938 INFO L427 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]=== [2020-09-17 14:34:05,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:34:05,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1699177508, now seen corresponding path program 2 times [2020-09-17 14:34:05,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:34:05,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95202472] [2020-09-17 14:34:05,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:34:05,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:34:06,006 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:34:06,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95202472] [2020-09-17 14:34:06,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:34:06,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 14:34:06,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543780201] [2020-09-17 14:34:06,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 14:34:06,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:34:06,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 14:34:06,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:34:06,009 INFO L87 Difference]: Start difference. First operand 28873 states and 153454 transitions. Second operand 7 states. [2020-09-17 14:34:06,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:34:06,793 INFO L93 Difference]: Finished difference Result 70510 states and 333491 transitions. [2020-09-17 14:34:06,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:34:06,794 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-17 14:34:06,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:34:07,075 INFO L225 Difference]: With dead ends: 70510 [2020-09-17 14:34:07,075 INFO L226 Difference]: Without dead ends: 70477 [2020-09-17 14:34:07,075 INFO L675 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 [2020-09-17 14:34:07,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70477 states. [2020-09-17 14:34:09,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70477 to 28942. [2020-09-17 14:34:09,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28942 states. [2020-09-17 14:34:09,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28942 states to 28942 states and 153921 transitions. [2020-09-17 14:34:09,778 INFO L78 Accepts]: Start accepts. Automaton has 28942 states and 153921 transitions. Word has length 19 [2020-09-17 14:34:09,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:34:09,778 INFO L479 AbstractCegarLoop]: Abstraction has 28942 states and 153921 transitions. [2020-09-17 14:34:09,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 14:34:09,779 INFO L276 IsEmpty]: Start isEmpty. Operand 28942 states and 153921 transitions. [2020-09-17 14:34:09,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 14:34:09,779 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:34:09,779 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:34:09,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2020-09-17 14:34:09,780 INFO L427 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]=== [2020-09-17 14:34:09,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:34:09,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1699205315, now seen corresponding path program 2 times [2020-09-17 14:34:09,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:34:09,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537574884] [2020-09-17 14:34:09,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:34:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:34:09,848 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:34:09,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537574884] [2020-09-17 14:34:09,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:34:09,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 14:34:09,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896407353] [2020-09-17 14:34:09,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 14:34:09,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:34:09,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 14:34:09,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:34:09,851 INFO L87 Difference]: Start difference. First operand 28942 states and 153921 transitions. Second operand 7 states. [2020-09-17 14:34:10,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:34:10,641 INFO L93 Difference]: Finished difference Result 70096 states and 331298 transitions. [2020-09-17 14:34:10,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:34:10,642 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-17 14:34:10,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:34:10,894 INFO L225 Difference]: With dead ends: 70096 [2020-09-17 14:34:10,894 INFO L226 Difference]: Without dead ends: 70063 [2020-09-17 14:34:10,894 INFO L675 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 [2020-09-17 14:34:11,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70063 states. [2020-09-17 14:34:12,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70063 to 29094. [2020-09-17 14:34:12,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29094 states. [2020-09-17 14:34:12,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29094 states to 29094 states and 154883 transitions. [2020-09-17 14:34:12,895 INFO L78 Accepts]: Start accepts. Automaton has 29094 states and 154883 transitions. Word has length 19 [2020-09-17 14:34:12,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:34:12,895 INFO L479 AbstractCegarLoop]: Abstraction has 29094 states and 154883 transitions. [2020-09-17 14:34:12,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 14:34:12,895 INFO L276 IsEmpty]: Start isEmpty. Operand 29094 states and 154883 transitions. [2020-09-17 14:34:12,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 14:34:12,896 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:34:12,896 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:34:12,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2020-09-17 14:34:12,897 INFO L427 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]=== [2020-09-17 14:34:12,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:34:12,897 INFO L82 PathProgramCache]: Analyzing trace with hash -228866966, now seen corresponding path program 1 times [2020-09-17 14:34:12,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:34:12,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481316242] [2020-09-17 14:34:12,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:34:12,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:34:12,991 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:34:12,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481316242] [2020-09-17 14:34:12,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100516324] [2020-09-17 14:34:12,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:34:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:34:13,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:34:13,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:34:13,247 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:34:13,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:34:13,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:34:13,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994223905] [2020-09-17 14:34:13,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:34:13,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:34:13,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:34:13,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:34:13,249 INFO L87 Difference]: Start difference. First operand 29094 states and 154883 transitions. Second operand 16 states. [2020-09-17 14:34:15,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:34:15,342 INFO L93 Difference]: Finished difference Result 100731 states and 448596 transitions. [2020-09-17 14:34:15,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:34:15,343 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 14:34:15,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:34:15,706 INFO L225 Difference]: With dead ends: 100731 [2020-09-17 14:34:15,707 INFO L226 Difference]: Without dead ends: 100715 [2020-09-17 14:34:15,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:34:16,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100715 states. [2020-09-17 14:34:18,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100715 to 28719. [2020-09-17 14:34:18,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28719 states. [2020-09-17 14:34:18,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28719 states to 28719 states and 152760 transitions. [2020-09-17 14:34:18,260 INFO L78 Accepts]: Start accepts. Automaton has 28719 states and 152760 transitions. Word has length 21 [2020-09-17 14:34:18,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:34:18,261 INFO L479 AbstractCegarLoop]: Abstraction has 28719 states and 152760 transitions. [2020-09-17 14:34:18,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:34:18,261 INFO L276 IsEmpty]: Start isEmpty. Operand 28719 states and 152760 transitions. [2020-09-17 14:34:18,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 14:34:18,262 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:34:18,262 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:34:20,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2020-09-17 14:34:20,428 INFO L427 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]=== [2020-09-17 14:34:20,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:34:20,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1302908714, now seen corresponding path program 2 times [2020-09-17 14:34:20,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:34:20,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787206769] [2020-09-17 14:34:20,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:34:20,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:34:20,523 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 14:34:20,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787206769] [2020-09-17 14:34:20,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984767478] [2020-09-17 14:34:20,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:34:20,646 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 14:34:20,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:34:20,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:34:20,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:34:20,775 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 14:34:20,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:34:20,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:34:20,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312668394] [2020-09-17 14:34:20,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:34:20,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:34:20,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:34:20,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:34:20,778 INFO L87 Difference]: Start difference. First operand 28719 states and 152760 transitions. Second operand 16 states. [2020-09-17 14:34:22,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:34:22,619 INFO L93 Difference]: Finished difference Result 99876 states and 444348 transitions. [2020-09-17 14:34:22,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:34:22,620 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 14:34:22,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:34:22,981 INFO L225 Difference]: With dead ends: 99876 [2020-09-17 14:34:22,981 INFO L226 Difference]: Without dead ends: 99855 [2020-09-17 14:34:22,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:34:24,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99855 states. [2020-09-17 14:34:25,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99855 to 28343. [2020-09-17 14:34:25,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28343 states. [2020-09-17 14:34:26,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28343 states to 28343 states and 150639 transitions. [2020-09-17 14:34:26,257 INFO L78 Accepts]: Start accepts. Automaton has 28343 states and 150639 transitions. Word has length 21 [2020-09-17 14:34:26,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:34:26,257 INFO L479 AbstractCegarLoop]: Abstraction has 28343 states and 150639 transitions. [2020-09-17 14:34:26,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:34:26,258 INFO L276 IsEmpty]: Start isEmpty. Operand 28343 states and 150639 transitions. [2020-09-17 14:34:26,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 14:34:26,259 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:34:26,259 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:34:26,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:34:26,460 INFO L427 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]=== [2020-09-17 14:34:26,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:34:26,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1149181014, now seen corresponding path program 3 times [2020-09-17 14:34:26,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:34:26,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994240078] [2020-09-17 14:34:26,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:34:26,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:34:26,552 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:34:26,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994240078] [2020-09-17 14:34:26,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889389890] [2020-09-17 14:34:26,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:34:26,669 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-17 14:34:26,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:34:26,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:34:26,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:34:26,798 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:34:26,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:34:26,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:34:26,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744866575] [2020-09-17 14:34:26,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:34:26,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:34:26,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:34:26,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:34:26,800 INFO L87 Difference]: Start difference. First operand 28343 states and 150639 transitions. Second operand 16 states. [2020-09-17 14:34:28,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:34:28,756 INFO L93 Difference]: Finished difference Result 100071 states and 445291 transitions. [2020-09-17 14:34:28,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:34:28,756 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 14:34:28,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:34:29,194 INFO L225 Difference]: With dead ends: 100071 [2020-09-17 14:34:29,194 INFO L226 Difference]: Without dead ends: 100055 [2020-09-17 14:34:29,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:34:30,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100055 states. [2020-09-17 14:34:32,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100055 to 27654. [2020-09-17 14:34:32,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27654 states. [2020-09-17 14:34:32,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27654 states to 27654 states and 147080 transitions. [2020-09-17 14:34:32,257 INFO L78 Accepts]: Start accepts. Automaton has 27654 states and 147080 transitions. Word has length 21 [2020-09-17 14:34:32,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:34:32,257 INFO L479 AbstractCegarLoop]: Abstraction has 27654 states and 147080 transitions. [2020-09-17 14:34:32,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:34:32,257 INFO L276 IsEmpty]: Start isEmpty. Operand 27654 states and 147080 transitions. [2020-09-17 14:34:32,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 14:34:32,258 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:34:32,258 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:34:32,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2020-09-17 14:34:32,459 INFO L427 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]=== [2020-09-17 14:34:32,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:34:32,460 INFO L82 PathProgramCache]: Analyzing trace with hash 315341610, now seen corresponding path program 4 times [2020-09-17 14:34:32,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:34:32,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109772983] [2020-09-17 14:34:32,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:34:32,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:34:32,566 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:34:32,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109772983] [2020-09-17 14:34:32,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731105379] [2020-09-17 14:34:32,567 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:34:32,682 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 14:34:32,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:34:32,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:34:32,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:34:32,815 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:34:32,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:34:32,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:34:32,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508205398] [2020-09-17 14:34:32,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:34:32,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:34:32,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:34:32,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:34:32,818 INFO L87 Difference]: Start difference. First operand 27654 states and 147080 transitions. Second operand 16 states. [2020-09-17 14:34:34,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:34:34,415 INFO L93 Difference]: Finished difference Result 99523 states and 442763 transitions. [2020-09-17 14:34:34,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:34:34,416 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 14:34:34,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:34:34,755 INFO L225 Difference]: With dead ends: 99523 [2020-09-17 14:34:34,755 INFO L226 Difference]: Without dead ends: 99502 [2020-09-17 14:34:34,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:34:35,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99502 states. [2020-09-17 14:34:39,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99502 to 27278. [2020-09-17 14:34:39,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27278 states. [2020-09-17 14:34:39,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27278 states to 27278 states and 144959 transitions. [2020-09-17 14:34:39,666 INFO L78 Accepts]: Start accepts. Automaton has 27278 states and 144959 transitions. Word has length 21 [2020-09-17 14:34:39,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:34:39,666 INFO L479 AbstractCegarLoop]: Abstraction has 27278 states and 144959 transitions. [2020-09-17 14:34:39,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:34:39,666 INFO L276 IsEmpty]: Start isEmpty. Operand 27278 states and 144959 transitions. [2020-09-17 14:34:39,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 14:34:39,667 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:34:39,667 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:34:39,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2020-09-17 14:34:39,868 INFO L427 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]=== [2020-09-17 14:34:39,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:34:39,868 INFO L82 PathProgramCache]: Analyzing trace with hash -822012438, now seen corresponding path program 5 times [2020-09-17 14:34:39,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:34:39,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446751899] [2020-09-17 14:34:39,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:34:39,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:34:39,963 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:34:39,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446751899] [2020-09-17 14:34:39,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:34:39,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 14:34:39,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206607273] [2020-09-17 14:34:39,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 14:34:39,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:34:39,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 14:34:39,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 14:34:39,965 INFO L87 Difference]: Start difference. First operand 27278 states and 144959 transitions. Second operand 9 states. [2020-09-17 14:34:41,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:34:41,588 INFO L93 Difference]: Finished difference Result 99710 states and 443686 transitions. [2020-09-17 14:34:41,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:34:41,589 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-17 14:34:41,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:34:41,937 INFO L225 Difference]: With dead ends: 99710 [2020-09-17 14:34:41,938 INFO L226 Difference]: Without dead ends: 99694 [2020-09-17 14:34:41,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 14:34:43,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99694 states. [2020-09-17 14:34:44,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99694 to 26597. [2020-09-17 14:34:44,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26597 states. [2020-09-17 14:34:44,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26597 states to 26597 states and 141420 transitions. [2020-09-17 14:34:44,814 INFO L78 Accepts]: Start accepts. Automaton has 26597 states and 141420 transitions. Word has length 21 [2020-09-17 14:34:44,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:34:44,815 INFO L479 AbstractCegarLoop]: Abstraction has 26597 states and 141420 transitions. [2020-09-17 14:34:44,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 14:34:44,815 INFO L276 IsEmpty]: Start isEmpty. Operand 26597 states and 141420 transitions. [2020-09-17 14:34:44,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 14:34:44,816 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:34:44,816 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:34:44,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2020-09-17 14:34:44,820 INFO L427 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]=== [2020-09-17 14:34:44,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:34:44,820 INFO L82 PathProgramCache]: Analyzing trace with hash -848707158, now seen corresponding path program 6 times [2020-09-17 14:34:44,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:34:44,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144318430] [2020-09-17 14:34:44,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:34:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:34:44,914 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:34:44,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144318430] [2020-09-17 14:34:44,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:34:44,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 14:34:44,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034310365] [2020-09-17 14:34:44,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 14:34:44,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:34:44,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 14:34:44,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 14:34:44,917 INFO L87 Difference]: Start difference. First operand 26597 states and 141420 transitions. Second operand 9 states. [2020-09-17 14:34:46,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:34:46,463 INFO L93 Difference]: Finished difference Result 98863 states and 439458 transitions. [2020-09-17 14:34:46,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:34:46,464 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-17 14:34:46,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:34:46,779 INFO L225 Difference]: With dead ends: 98863 [2020-09-17 14:34:46,779 INFO L226 Difference]: Without dead ends: 98841 [2020-09-17 14:34:46,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 14:34:47,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98841 states. [2020-09-17 14:34:51,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98841 to 25744. [2020-09-17 14:34:51,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25744 states. [2020-09-17 14:34:51,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25744 states to 25744 states and 137181 transitions. [2020-09-17 14:34:51,734 INFO L78 Accepts]: Start accepts. Automaton has 25744 states and 137181 transitions. Word has length 21 [2020-09-17 14:34:51,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:34:51,734 INFO L479 AbstractCegarLoop]: Abstraction has 25744 states and 137181 transitions. [2020-09-17 14:34:51,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 14:34:51,735 INFO L276 IsEmpty]: Start isEmpty. Operand 25744 states and 137181 transitions. [2020-09-17 14:34:51,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 14:34:51,736 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:34:51,736 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:34:51,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2020-09-17 14:34:51,736 INFO L427 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]=== [2020-09-17 14:34:51,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:34:51,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1818695965, now seen corresponding path program 1 times [2020-09-17 14:34:51,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:34:51,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635249715] [2020-09-17 14:34:51,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:34:51,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:34:51,788 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:34:51,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635249715] [2020-09-17 14:34:51,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:34:51,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 14:34:51,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088927694] [2020-09-17 14:34:51,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 14:34:51,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:34:51,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 14:34:51,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 14:34:51,790 INFO L87 Difference]: Start difference. First operand 25744 states and 137181 transitions. Second operand 5 states. [2020-09-17 14:34:52,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:34:52,193 INFO L93 Difference]: Finished difference Result 46463 states and 236107 transitions. [2020-09-17 14:34:52,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 14:34:52,194 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-17 14:34:52,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:34:52,350 INFO L225 Difference]: With dead ends: 46463 [2020-09-17 14:34:52,350 INFO L226 Difference]: Without dead ends: 46417 [2020-09-17 14:34:52,351 INFO L675 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 [2020-09-17 14:34:53,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46417 states. [2020-09-17 14:34:53,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46417 to 31960. [2020-09-17 14:34:53,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31960 states. [2020-09-17 14:34:53,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31960 states to 31960 states and 171209 transitions. [2020-09-17 14:34:53,857 INFO L78 Accepts]: Start accepts. Automaton has 31960 states and 171209 transitions. Word has length 21 [2020-09-17 14:34:53,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:34:53,857 INFO L479 AbstractCegarLoop]: Abstraction has 31960 states and 171209 transitions. [2020-09-17 14:34:53,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 14:34:53,857 INFO L276 IsEmpty]: Start isEmpty. Operand 31960 states and 171209 transitions. [2020-09-17 14:34:53,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 14:34:53,859 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:34:53,859 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:34:53,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2020-09-17 14:34:53,859 INFO L427 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]=== [2020-09-17 14:34:53,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:34:53,859 INFO L82 PathProgramCache]: Analyzing trace with hash 605532395, now seen corresponding path program 1 times [2020-09-17 14:34:53,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:34:53,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126478851] [2020-09-17 14:34:53,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:34:53,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:34:53,929 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 14:34:53,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126478851] [2020-09-17 14:34:53,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79095475] [2020-09-17 14:34:53,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:34:54,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:34:54,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 14:34:54,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:34:54,130 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 14:34:54,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:34:54,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 14:34:54,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005000232] [2020-09-17 14:34:54,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 14:34:54,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:34:54,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 14:34:54,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-17 14:34:54,132 INFO L87 Difference]: Start difference. First operand 31960 states and 171209 transitions. Second operand 12 states. [2020-09-17 14:34:55,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:34:55,606 INFO L93 Difference]: Finished difference Result 75380 states and 361389 transitions. [2020-09-17 14:34:55,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:34:55,607 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-17 14:34:55,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:34:55,870 INFO L225 Difference]: With dead ends: 75380 [2020-09-17 14:34:55,870 INFO L226 Difference]: Without dead ends: 75344 [2020-09-17 14:34:55,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:34:56,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75344 states. [2020-09-17 14:34:57,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75344 to 32974. [2020-09-17 14:34:57,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32974 states. [2020-09-17 14:34:57,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32974 states to 32974 states and 176363 transitions. [2020-09-17 14:34:57,881 INFO L78 Accepts]: Start accepts. Automaton has 32974 states and 176363 transitions. Word has length 23 [2020-09-17 14:34:57,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:34:57,881 INFO L479 AbstractCegarLoop]: Abstraction has 32974 states and 176363 transitions. [2020-09-17 14:34:57,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 14:34:57,881 INFO L276 IsEmpty]: Start isEmpty. Operand 32974 states and 176363 transitions. [2020-09-17 14:34:57,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 14:34:57,883 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:34:57,883 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:34:58,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:34:58,084 INFO L427 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]=== [2020-09-17 14:34:58,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:34:58,085 INFO L82 PathProgramCache]: Analyzing trace with hash 768040394, now seen corresponding path program 1 times [2020-09-17 14:34:58,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:34:58,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213707162] [2020-09-17 14:34:58,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:34:58,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:34:58,157 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 14:34:58,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213707162] [2020-09-17 14:34:58,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365745522] [2020-09-17 14:34:58,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:34:58,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:34:58,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 14:34:58,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:34:58,361 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 14:34:58,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:34:58,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 14:34:58,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709118711] [2020-09-17 14:34:58,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 14:34:58,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:34:58,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 14:34:58,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-17 14:34:58,363 INFO L87 Difference]: Start difference. First operand 32974 states and 176363 transitions. Second operand 12 states. [2020-09-17 14:34:59,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:34:59,760 INFO L93 Difference]: Finished difference Result 79487 states and 381757 transitions. [2020-09-17 14:34:59,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:34:59,761 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-17 14:34:59,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:35:00,077 INFO L225 Difference]: With dead ends: 79487 [2020-09-17 14:35:00,077 INFO L226 Difference]: Without dead ends: 79445 [2020-09-17 14:35:00,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:35:01,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79445 states. [2020-09-17 14:35:02,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79445 to 33981. [2020-09-17 14:35:02,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33981 states. [2020-09-17 14:35:02,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33981 states to 33981 states and 181710 transitions. [2020-09-17 14:35:02,179 INFO L78 Accepts]: Start accepts. Automaton has 33981 states and 181710 transitions. Word has length 23 [2020-09-17 14:35:02,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:35:02,180 INFO L479 AbstractCegarLoop]: Abstraction has 33981 states and 181710 transitions. [2020-09-17 14:35:02,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 14:35:02,180 INFO L276 IsEmpty]: Start isEmpty. Operand 33981 states and 181710 transitions. [2020-09-17 14:35:02,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 14:35:02,182 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:35:02,182 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:35:02,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:35:02,383 INFO L427 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]=== [2020-09-17 14:35:02,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:35:02,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1041867770, now seen corresponding path program 1 times [2020-09-17 14:35:02,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:35:02,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548139904] [2020-09-17 14:35:02,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:35:02,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:35:02,449 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:35:02,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548139904] [2020-09-17 14:35:02,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140336763] [2020-09-17 14:35:02,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:35:02,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:35:02,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 14:35:02,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:35:02,636 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:35:02,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:35:02,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 14:35:02,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161785657] [2020-09-17 14:35:02,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 14:35:02,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:35:02,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 14:35:02,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-17 14:35:02,638 INFO L87 Difference]: Start difference. First operand 33981 states and 181710 transitions. Second operand 12 states. [2020-09-17 14:35:03,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:35:03,907 INFO L93 Difference]: Finished difference Result 82728 states and 398553 transitions. [2020-09-17 14:35:03,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:35:03,908 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-17 14:35:03,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:35:04,179 INFO L225 Difference]: With dead ends: 82728 [2020-09-17 14:35:04,179 INFO L226 Difference]: Without dead ends: 82673 [2020-09-17 14:35:04,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:35:05,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82673 states. [2020-09-17 14:35:06,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82673 to 34821. [2020-09-17 14:35:06,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34821 states. [2020-09-17 14:35:06,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34821 states to 34821 states and 186422 transitions. [2020-09-17 14:35:06,399 INFO L78 Accepts]: Start accepts. Automaton has 34821 states and 186422 transitions. Word has length 23 [2020-09-17 14:35:06,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:35:06,400 INFO L479 AbstractCegarLoop]: Abstraction has 34821 states and 186422 transitions. [2020-09-17 14:35:06,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 14:35:06,400 INFO L276 IsEmpty]: Start isEmpty. Operand 34821 states and 186422 transitions. [2020-09-17 14:35:06,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 14:35:06,402 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:35:06,402 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:35:06,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:35:06,603 INFO L427 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]=== [2020-09-17 14:35:06,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:35:06,604 INFO L82 PathProgramCache]: Analyzing trace with hash -284839030, now seen corresponding path program 2 times [2020-09-17 14:35:06,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:35:06,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195953525] [2020-09-17 14:35:06,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:35:06,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:35:06,675 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:35:06,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195953525] [2020-09-17 14:35:06,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:35:06,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 14:35:06,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489565458] [2020-09-17 14:35:06,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 14:35:06,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:35:06,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 14:35:06,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:35:06,677 INFO L87 Difference]: Start difference. First operand 34821 states and 186422 transitions. Second operand 7 states. [2020-09-17 14:35:07,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:35:07,955 INFO L93 Difference]: Finished difference Result 83507 states and 402693 transitions. [2020-09-17 14:35:07,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:35:07,956 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-17 14:35:07,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:35:08,241 INFO L225 Difference]: With dead ends: 83507 [2020-09-17 14:35:08,242 INFO L226 Difference]: Without dead ends: 83452 [2020-09-17 14:35:08,242 INFO L675 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 [2020-09-17 14:35:09,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83452 states. [2020-09-17 14:35:10,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83452 to 35694. [2020-09-17 14:35:10,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35694 states. [2020-09-17 14:35:10,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35694 states to 35694 states and 191145 transitions. [2020-09-17 14:35:10,413 INFO L78 Accepts]: Start accepts. Automaton has 35694 states and 191145 transitions. Word has length 23 [2020-09-17 14:35:10,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:35:10,413 INFO L479 AbstractCegarLoop]: Abstraction has 35694 states and 191145 transitions. [2020-09-17 14:35:10,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 14:35:10,413 INFO L276 IsEmpty]: Start isEmpty. Operand 35694 states and 191145 transitions. [2020-09-17 14:35:10,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 14:35:10,416 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:35:10,417 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:35:10,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2020-09-17 14:35:10,417 INFO L427 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]=== [2020-09-17 14:35:10,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:35:10,417 INFO L82 PathProgramCache]: Analyzing trace with hash -284850438, now seen corresponding path program 2 times [2020-09-17 14:35:10,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:35:10,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444820313] [2020-09-17 14:35:10,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:35:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:35:10,491 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:35:10,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444820313] [2020-09-17 14:35:10,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:35:10,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 14:35:10,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67753684] [2020-09-17 14:35:10,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 14:35:10,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:35:10,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 14:35:10,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:35:10,492 INFO L87 Difference]: Start difference. First operand 35694 states and 191145 transitions. Second operand 7 states. [2020-09-17 14:35:11,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:35:11,939 INFO L93 Difference]: Finished difference Result 83523 states and 402462 transitions. [2020-09-17 14:35:11,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:35:11,940 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-17 14:35:11,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:35:12,220 INFO L225 Difference]: With dead ends: 83523 [2020-09-17 14:35:12,220 INFO L226 Difference]: Without dead ends: 83468 [2020-09-17 14:35:12,220 INFO L675 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 [2020-09-17 14:35:13,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83468 states. [2020-09-17 14:35:14,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83468 to 36306. [2020-09-17 14:35:14,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36306 states. [2020-09-17 14:35:14,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36306 states to 36306 states and 194552 transitions. [2020-09-17 14:35:14,351 INFO L78 Accepts]: Start accepts. Automaton has 36306 states and 194552 transitions. Word has length 23 [2020-09-17 14:35:14,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:35:14,351 INFO L479 AbstractCegarLoop]: Abstraction has 36306 states and 194552 transitions. [2020-09-17 14:35:14,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 14:35:14,351 INFO L276 IsEmpty]: Start isEmpty. Operand 36306 states and 194552 transitions. [2020-09-17 14:35:14,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 14:35:14,353 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:35:14,353 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:35:14,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2020-09-17 14:35:14,354 INFO L427 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]=== [2020-09-17 14:35:14,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:35:14,354 INFO L82 PathProgramCache]: Analyzing trace with hash -284866837, now seen corresponding path program 2 times [2020-09-17 14:35:14,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:35:14,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759135514] [2020-09-17 14:35:14,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:35:14,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:35:14,423 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:35:14,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759135514] [2020-09-17 14:35:14,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:35:14,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 14:35:14,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215152308] [2020-09-17 14:35:14,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 14:35:14,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:35:14,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 14:35:14,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:35:14,425 INFO L87 Difference]: Start difference. First operand 36306 states and 194552 transitions. Second operand 7 states. [2020-09-17 14:35:15,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:35:15,282 INFO L93 Difference]: Finished difference Result 83918 states and 404136 transitions. [2020-09-17 14:35:15,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:35:15,283 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-17 14:35:15,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:35:16,186 INFO L225 Difference]: With dead ends: 83918 [2020-09-17 14:35:16,186 INFO L226 Difference]: Without dead ends: 83863 [2020-09-17 14:35:16,187 INFO L675 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 [2020-09-17 14:35:17,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83863 states. [2020-09-17 14:35:18,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83863 to 37062. [2020-09-17 14:35:18,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37062 states. [2020-09-17 14:35:18,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37062 states to 37062 states and 198528 transitions. [2020-09-17 14:35:18,233 INFO L78 Accepts]: Start accepts. Automaton has 37062 states and 198528 transitions. Word has length 23 [2020-09-17 14:35:18,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:35:18,233 INFO L479 AbstractCegarLoop]: Abstraction has 37062 states and 198528 transitions. [2020-09-17 14:35:18,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 14:35:18,233 INFO L276 IsEmpty]: Start isEmpty. Operand 37062 states and 198528 transitions. [2020-09-17 14:35:18,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:35:18,236 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:35:18,236 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:35:18,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2020-09-17 14:35:18,237 INFO L427 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]=== [2020-09-17 14:35:18,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:35:18,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1146013160, now seen corresponding path program 1 times [2020-09-17 14:35:18,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:35:18,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058717008] [2020-09-17 14:35:18,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:35:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:35:18,337 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 14:35:18,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058717008] [2020-09-17 14:35:18,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894107356] [2020-09-17 14:35:18,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:35:18,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:35:18,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:35:18,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:35:18,588 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 14:35:18,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:35:18,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:35:18,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428994198] [2020-09-17 14:35:18,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:35:18,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:35:18,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:35:18,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:35:18,590 INFO L87 Difference]: Start difference. First operand 37062 states and 198528 transitions. Second operand 16 states. [2020-09-17 14:35:21,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:35:21,238 INFO L93 Difference]: Finished difference Result 122892 states and 561130 transitions. [2020-09-17 14:35:21,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:35:21,239 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:35:21,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:35:21,686 INFO L225 Difference]: With dead ends: 122892 [2020-09-17 14:35:21,686 INFO L226 Difference]: Without dead ends: 122862 [2020-09-17 14:35:21,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:35:22,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122862 states. [2020-09-17 14:35:24,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122862 to 36727. [2020-09-17 14:35:24,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36727 states. [2020-09-17 14:35:24,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36727 states to 36727 states and 196466 transitions. [2020-09-17 14:35:24,464 INFO L78 Accepts]: Start accepts. Automaton has 36727 states and 196466 transitions. Word has length 25 [2020-09-17 14:35:24,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:35:24,465 INFO L479 AbstractCegarLoop]: Abstraction has 36727 states and 196466 transitions. [2020-09-17 14:35:24,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:35:24,465 INFO L276 IsEmpty]: Start isEmpty. Operand 36727 states and 196466 transitions. [2020-09-17 14:35:24,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:35:24,468 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:35:24,468 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:35:24,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2020-09-17 14:35:24,669 INFO L427 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]=== [2020-09-17 14:35:24,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:35:24,669 INFO L82 PathProgramCache]: Analyzing trace with hash -872185784, now seen corresponding path program 1 times [2020-09-17 14:35:24,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:35:24,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684045528] [2020-09-17 14:35:24,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:35:24,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:35:24,759 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 14:35:24,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684045528] [2020-09-17 14:35:24,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346958879] [2020-09-17 14:35:24,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:35:27,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:35:27,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:35:27,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:35:27,203 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 14:35:27,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:35:27,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:35:27,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69228131] [2020-09-17 14:35:27,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:35:27,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:35:27,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:35:27,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:35:27,205 INFO L87 Difference]: Start difference. First operand 36727 states and 196466 transitions. Second operand 16 states. [2020-09-17 14:35:29,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:35:29,255 INFO L93 Difference]: Finished difference Result 121590 states and 554657 transitions. [2020-09-17 14:35:29,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:35:29,255 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:35:29,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:35:29,681 INFO L225 Difference]: With dead ends: 121590 [2020-09-17 14:35:29,681 INFO L226 Difference]: Without dead ends: 121560 [2020-09-17 14:35:29,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:35:30,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121560 states. [2020-09-17 14:35:32,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121560 to 36513. [2020-09-17 14:35:32,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36513 states. [2020-09-17 14:35:33,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36513 states to 36513 states and 195090 transitions. [2020-09-17 14:35:33,054 INFO L78 Accepts]: Start accepts. Automaton has 36513 states and 195090 transitions. Word has length 25 [2020-09-17 14:35:33,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:35:33,054 INFO L479 AbstractCegarLoop]: Abstraction has 36513 states and 195090 transitions. [2020-09-17 14:35:33,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:35:33,054 INFO L276 IsEmpty]: Start isEmpty. Operand 36513 states and 195090 transitions. [2020-09-17 14:35:33,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:35:33,058 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:35:33,058 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:35:33,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:35:33,264 INFO L427 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]=== [2020-09-17 14:35:33,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:35:33,265 INFO L82 PathProgramCache]: Analyzing trace with hash 2096074712, now seen corresponding path program 2 times [2020-09-17 14:35:33,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:35:33,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670568750] [2020-09-17 14:35:33,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:35:33,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:35:33,358 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 14:35:33,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670568750] [2020-09-17 14:35:33,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877875247] [2020-09-17 14:35:33,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:35:33,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 14:35:33,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:35:33,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:35:33,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:35:33,613 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 14:35:33,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:35:33,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:35:33,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616418689] [2020-09-17 14:35:33,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:35:33,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:35:33,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:35:33,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:35:33,616 INFO L87 Difference]: Start difference. First operand 36513 states and 195090 transitions. Second operand 16 states. [2020-09-17 14:35:35,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:35:35,533 INFO L93 Difference]: Finished difference Result 120395 states and 548664 transitions. [2020-09-17 14:35:35,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:35:35,534 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:35:35,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:35:35,970 INFO L225 Difference]: With dead ends: 120395 [2020-09-17 14:35:35,970 INFO L226 Difference]: Without dead ends: 120362 [2020-09-17 14:35:35,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:35:37,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120362 states. [2020-09-17 14:35:39,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120362 to 36444. [2020-09-17 14:35:39,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36444 states. [2020-09-17 14:35:39,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36444 states to 36444 states and 194571 transitions. [2020-09-17 14:35:39,429 INFO L78 Accepts]: Start accepts. Automaton has 36444 states and 194571 transitions. Word has length 25 [2020-09-17 14:35:39,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:35:39,429 INFO L479 AbstractCegarLoop]: Abstraction has 36444 states and 194571 transitions. [2020-09-17 14:35:39,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:35:39,429 INFO L276 IsEmpty]: Start isEmpty. Operand 36444 states and 194571 transitions. [2020-09-17 14:35:39,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:35:39,431 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:35:39,431 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:35:39,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-09-17 14:35:39,632 INFO L427 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]=== [2020-09-17 14:35:39,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:35:39,633 INFO L82 PathProgramCache]: Analyzing trace with hash 2096063304, now seen corresponding path program 2 times [2020-09-17 14:35:39,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:35:39,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233104901] [2020-09-17 14:35:39,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:35:39,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:35:39,729 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 14:35:39,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233104901] [2020-09-17 14:35:39,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111223603] [2020-09-17 14:35:39,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:35:39,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 14:35:39,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:35:39,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:35:39,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:35:39,983 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 14:35:39,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:35:39,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:35:39,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977444789] [2020-09-17 14:35:39,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:35:39,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:35:39,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:35:39,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:35:39,985 INFO L87 Difference]: Start difference. First operand 36444 states and 194571 transitions. Second operand 16 states. [2020-09-17 14:35:42,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:35:42,543 INFO L93 Difference]: Finished difference Result 119346 states and 543724 transitions. [2020-09-17 14:35:42,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:35:42,544 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:35:42,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:35:42,941 INFO L225 Difference]: With dead ends: 119346 [2020-09-17 14:35:42,941 INFO L226 Difference]: Without dead ends: 119313 [2020-09-17 14:35:42,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:35:44,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119313 states. [2020-09-17 14:35:45,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119313 to 36040. [2020-09-17 14:35:45,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36040 states. [2020-09-17 14:35:45,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36040 states to 36040 states and 192287 transitions. [2020-09-17 14:35:45,650 INFO L78 Accepts]: Start accepts. Automaton has 36040 states and 192287 transitions. Word has length 25 [2020-09-17 14:35:45,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:35:45,651 INFO L479 AbstractCegarLoop]: Abstraction has 36040 states and 192287 transitions. [2020-09-17 14:35:45,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:35:45,651 INFO L276 IsEmpty]: Start isEmpty. Operand 36040 states and 192287 transitions. [2020-09-17 14:35:45,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:35:45,653 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:35:45,653 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forcibly destroying the process [2020-09-17 14:35:47,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2020-09-17 14:35:47,821 INFO L427 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]=== [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] The stream was forcibly closed: stdIn [2020-09-17 14:35:47,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:35:47,822 INFO L82 PathProgramCache]: Analyzing trace with hash 582269272, now seen corresponding path program 3 times [2020-09-17 14:35:47,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:35:47,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943099130] [2020-09-17 14:35:47,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:35:47,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:35:47,919 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 14:35:47,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943099130] [2020-09-17 14:35:47,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726412236] [2020-09-17 14:35:47,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:35:48,030 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-09-17 14:35:48,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:35:48,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:35:48,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:35:48,167 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 14:35:48,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:35:48,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:35:48,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155868696] [2020-09-17 14:35:48,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:35:48,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:35:48,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:35:48,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:35:48,169 INFO L87 Difference]: Start difference. First operand 36040 states and 192287 transitions. Second operand 16 states. [2020-09-17 14:35:50,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:35:50,283 INFO L93 Difference]: Finished difference Result 119770 states and 545635 transitions. [2020-09-17 14:35:50,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:35:50,284 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:35:50,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:35:50,652 INFO L225 Difference]: With dead ends: 119770 [2020-09-17 14:35:50,652 INFO L226 Difference]: Without dead ends: 119740 [2020-09-17 14:35:50,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:35:51,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119740 states. [2020-09-17 14:35:53,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119740 to 35471. [2020-09-17 14:35:53,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35471 states. [2020-09-17 14:35:53,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35471 states to 35471 states and 189238 transitions. [2020-09-17 14:35:53,840 INFO L78 Accepts]: Start accepts. Automaton has 35471 states and 189238 transitions. Word has length 25 [2020-09-17 14:35:53,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:35:53,840 INFO L479 AbstractCegarLoop]: Abstraction has 35471 states and 189238 transitions. [2020-09-17 14:35:53,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:35:53,840 INFO L276 IsEmpty]: Start isEmpty. Operand 35471 states and 189238 transitions. [2020-09-17 14:35:53,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:35:53,842 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:35:53,843 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:35:54,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2020-09-17 14:35:54,044 INFO L427 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]=== [2020-09-17 14:35:54,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:35:54,044 INFO L82 PathProgramCache]: Analyzing trace with hash 679178599, now seen corresponding path program 1 times [2020-09-17 14:35:54,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:35:54,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179068486] [2020-09-17 14:35:54,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:35:54,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:35:54,135 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:35:54,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179068486] [2020-09-17 14:35:54,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993752317] [2020-09-17 14:35:54,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:35:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:35:54,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:35:54,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:35:54,400 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:35:54,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:35:54,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:35:54,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974131688] [2020-09-17 14:35:54,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:35:54,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:35:54,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:35:54,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:35:54,402 INFO L87 Difference]: Start difference. First operand 35471 states and 189238 transitions. Second operand 16 states. [2020-09-17 14:35:56,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:35:56,421 INFO L93 Difference]: Finished difference Result 121131 states and 553230 transitions. [2020-09-17 14:35:56,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:35:56,421 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:35:56,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:35:56,839 INFO L225 Difference]: With dead ends: 121131 [2020-09-17 14:35:56,839 INFO L226 Difference]: Without dead ends: 121101 [2020-09-17 14:35:56,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:35:58,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121101 states. [2020-09-17 14:36:00,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121101 to 35374. [2020-09-17 14:36:00,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35374 states. [2020-09-17 14:36:00,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35374 states to 35374 states and 188534 transitions. [2020-09-17 14:36:00,252 INFO L78 Accepts]: Start accepts. Automaton has 35374 states and 188534 transitions. Word has length 25 [2020-09-17 14:36:00,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:36:00,252 INFO L479 AbstractCegarLoop]: Abstraction has 35374 states and 188534 transitions. [2020-09-17 14:36:00,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:36:00,252 INFO L276 IsEmpty]: Start isEmpty. Operand 35374 states and 188534 transitions. [2020-09-17 14:36:00,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:36:00,255 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:36:00,255 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:36:00,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2020-09-17 14:36:00,456 INFO L427 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]=== [2020-09-17 14:36:00,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:36:00,456 INFO L82 PathProgramCache]: Analyzing trace with hash -647539609, now seen corresponding path program 2 times [2020-09-17 14:36:00,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:36:00,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929808136] [2020-09-17 14:36:00,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:36:00,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:36:00,553 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 14:36:00,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929808136] [2020-09-17 14:36:00,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407240260] [2020-09-17 14:36:00,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:36:00,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 14:36:00,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:36:00,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:36:00,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:36:00,811 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 14:36:00,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:36:00,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:36:00,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363853797] [2020-09-17 14:36:00,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:36:00,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:36:00,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:36:00,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:36:00,813 INFO L87 Difference]: Start difference. First operand 35374 states and 188534 transitions. Second operand 16 states. [2020-09-17 14:36:03,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:36:03,230 INFO L93 Difference]: Finished difference Result 120194 states and 548412 transitions. [2020-09-17 14:36:03,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:36:03,231 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:36:03,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:36:03,637 INFO L225 Difference]: With dead ends: 120194 [2020-09-17 14:36:03,638 INFO L226 Difference]: Without dead ends: 120154 [2020-09-17 14:36:03,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:36:04,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120154 states. [2020-09-17 14:36:06,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120154 to 35219. [2020-09-17 14:36:06,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35219 states. [2020-09-17 14:36:10,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35219 states to 35219 states and 187630 transitions. [2020-09-17 14:36:10,075 INFO L78 Accepts]: Start accepts. Automaton has 35219 states and 187630 transitions. Word has length 25 [2020-09-17 14:36:10,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:36:10,075 INFO L479 AbstractCegarLoop]: Abstraction has 35219 states and 187630 transitions. [2020-09-17 14:36:10,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:36:10,076 INFO L276 IsEmpty]: Start isEmpty. Operand 35219 states and 187630 transitions. [2020-09-17 14:36:10,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:36:10,078 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:36:10,078 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:36:10,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:36:10,279 INFO L427 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]=== [2020-09-17 14:36:10,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:36:10,280 INFO L82 PathProgramCache]: Analyzing trace with hash -647556008, now seen corresponding path program 4 times [2020-09-17 14:36:10,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:36:10,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482494361] [2020-09-17 14:36:10,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:36:10,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:36:10,379 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 14:36:10,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482494361] [2020-09-17 14:36:10,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180683903] [2020-09-17 14:36:10,380 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:36:10,495 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 14:36:10,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:36:10,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:36:10,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:36:10,634 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 14:36:10,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:36:10,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:36:10,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20676885] [2020-09-17 14:36:10,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:36:10,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:36:10,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:36:10,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:36:10,636 INFO L87 Difference]: Start difference. First operand 35219 states and 187630 transitions. Second operand 16 states. [2020-09-17 14:36:12,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:36:12,458 INFO L93 Difference]: Finished difference Result 118559 states and 539905 transitions. [2020-09-17 14:36:12,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:36:12,459 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:36:12,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:36:12,860 INFO L225 Difference]: With dead ends: 118559 [2020-09-17 14:36:12,860 INFO L226 Difference]: Without dead ends: 118526 [2020-09-17 14:36:12,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:36:14,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118526 states. [2020-09-17 14:36:16,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118526 to 34815. [2020-09-17 14:36:16,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34815 states. [2020-09-17 14:36:16,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34815 states to 34815 states and 185346 transitions. [2020-09-17 14:36:16,170 INFO L78 Accepts]: Start accepts. Automaton has 34815 states and 185346 transitions. Word has length 25 [2020-09-17 14:36:16,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:36:16,170 INFO L479 AbstractCegarLoop]: Abstraction has 34815 states and 185346 transitions. [2020-09-17 14:36:16,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:36:16,170 INFO L276 IsEmpty]: Start isEmpty. Operand 34815 states and 185346 transitions. [2020-09-17 14:36:16,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:36:16,173 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:36:16,173 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:36:16,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2020-09-17 14:36:16,381 INFO L427 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]=== [2020-09-17 14:36:16,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:36:16,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1056609241, now seen corresponding path program 3 times [2020-09-17 14:36:16,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:36:16,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022203347] [2020-09-17 14:36:16,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:36:16,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:36:16,478 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:36:16,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022203347] [2020-09-17 14:36:16,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981476873] [2020-09-17 14:36:16,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 14:36:16,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-17 14:36:16,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:36:16,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:36:16,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:36:16,719 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:36:16,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:36:16,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:36:16,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524781531] [2020-09-17 14:36:16,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:36:16,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:36:16,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:36:16,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:36:16,721 INFO L87 Difference]: Start difference. First operand 34815 states and 185346 transitions. Second operand 16 states. [2020-09-17 14:36:18,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:36:18,596 INFO L93 Difference]: Finished difference Result 118955 states and 542533 transitions. [2020-09-17 14:36:18,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:36:18,597 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:36:18,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:36:18,974 INFO L225 Difference]: With dead ends: 118955 [2020-09-17 14:36:18,974 INFO L226 Difference]: Without dead ends: 118925 [2020-09-17 14:36:18,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:36:21,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118925 states. [2020-09-17 14:36:22,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118925 to 34363. [2020-09-17 14:36:22,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34363 states. [2020-09-17 14:36:22,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34363 states to 34363 states and 182968 transitions. [2020-09-17 14:36:22,409 INFO L78 Accepts]: Start accepts. Automaton has 34363 states and 182968 transitions. Word has length 25 [2020-09-17 14:36:22,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:36:22,409 INFO L479 AbstractCegarLoop]: Abstraction has 34363 states and 182968 transitions. [2020-09-17 14:36:22,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:36:22,410 INFO L276 IsEmpty]: Start isEmpty. Operand 34363 states and 182968 transitions. [2020-09-17 14:36:22,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:36:22,412 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:36:22,412 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:36:22,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2020-09-17 14:36:22,613 INFO L427 AbstractCegarLoop]: === Iteration 33 === [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]=== [2020-09-17 14:36:22,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:36:22,614 INFO L82 PathProgramCache]: Analyzing trace with hash -989383992, now seen corresponding path program 3 times [2020-09-17 14:36:22,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:36:22,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42490397] [2020-09-17 14:36:22,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:36:22,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:36:22,711 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:36:22,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42490397] [2020-09-17 14:36:22,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097359574] [2020-09-17 14:36:22,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:36:22,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-17 14:36:22,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:36:22,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:36:22,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:36:22,949 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:36:22,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:36:22,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:36:22,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457710082] [2020-09-17 14:36:22,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:36:22,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:36:22,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:36:22,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:36:22,952 INFO L87 Difference]: Start difference. First operand 34363 states and 182968 transitions. Second operand 16 states. [2020-09-17 14:36:25,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:36:25,589 INFO L93 Difference]: Finished difference Result 117996 states and 537739 transitions. [2020-09-17 14:36:25,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:36:25,589 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:36:25,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:36:25,968 INFO L225 Difference]: With dead ends: 117996 [2020-09-17 14:36:25,968 INFO L226 Difference]: Without dead ends: 117966 [2020-09-17 14:36:25,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:36:27,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117966 states. [2020-09-17 14:36:28,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117966 to 34024. [2020-09-17 14:36:28,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34024 states. [2020-09-17 14:36:28,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34024 states to 34024 states and 181250 transitions. [2020-09-17 14:36:28,705 INFO L78 Accepts]: Start accepts. Automaton has 34024 states and 181250 transitions. Word has length 25 [2020-09-17 14:36:28,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:36:28,705 INFO L479 AbstractCegarLoop]: Abstraction has 34024 states and 181250 transitions. [2020-09-17 14:36:28,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:36:28,705 INFO L276 IsEmpty]: Start isEmpty. Operand 34024 states and 181250 transitions. [2020-09-17 14:36:28,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:36:28,708 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:36:28,708 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:36:28,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2020-09-17 14:36:28,909 INFO L427 AbstractCegarLoop]: === Iteration 34 === [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]=== [2020-09-17 14:36:28,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:36:28,909 INFO L82 PathProgramCache]: Analyzing trace with hash 507575079, now seen corresponding path program 4 times [2020-09-17 14:36:28,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:36:28,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873590228] [2020-09-17 14:36:28,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:36:28,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:36:29,004 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:36:29,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873590228] [2020-09-17 14:36:29,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401670279] [2020-09-17 14:36:29,005 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:36:29,610 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 14:36:29,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:36:29,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:36:29,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:36:29,741 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:36:29,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:36:29,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:36:29,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697740810] [2020-09-17 14:36:29,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:36:29,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:36:29,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:36:29,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:36:29,742 INFO L87 Difference]: Start difference. First operand 34024 states and 181250 transitions. Second operand 16 states. [2020-09-17 14:36:31,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:36:31,672 INFO L93 Difference]: Finished difference Result 119076 states and 543105 transitions. [2020-09-17 14:36:31,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:36:31,672 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:36:31,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:36:32,052 INFO L225 Difference]: With dead ends: 119076 [2020-09-17 14:36:32,052 INFO L226 Difference]: Without dead ends: 119036 [2020-09-17 14:36:32,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:36:33,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119036 states. [2020-09-17 14:36:37,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119036 to 33873. [2020-09-17 14:36:37,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33873 states. [2020-09-17 14:36:37,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33873 states to 33873 states and 180354 transitions. [2020-09-17 14:36:37,902 INFO L78 Accepts]: Start accepts. Automaton has 33873 states and 180354 transitions. Word has length 25 [2020-09-17 14:36:37,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:36:37,902 INFO L479 AbstractCegarLoop]: Abstraction has 33873 states and 180354 transitions. [2020-09-17 14:36:37,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:36:37,902 INFO L276 IsEmpty]: Start isEmpty. Operand 33873 states and 180354 transitions. [2020-09-17 14:36:37,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:36:37,905 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:36:37,905 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:36:38,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108 [2020-09-17 14:36:38,106 INFO L427 AbstractCegarLoop]: === Iteration 35 === [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]=== [2020-09-17 14:36:38,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:36:38,107 INFO L82 PathProgramCache]: Analyzing trace with hash 507547272, now seen corresponding path program 4 times [2020-09-17 14:36:38,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:36:38,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358090285] [2020-09-17 14:36:38,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:36:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:36:38,206 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:36:38,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358090285] [2020-09-17 14:36:38,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046179392] [2020-09-17 14:36:38,207 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:36:38,332 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 14:36:38,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:36:38,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 14:36:38,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:36:38,467 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:36:38,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:36:38,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 14:36:38,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19354555] [2020-09-17 14:36:38,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 14:36:38,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:36:38,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 14:36:38,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-17 14:36:38,469 INFO L87 Difference]: Start difference. First operand 33873 states and 180354 transitions. Second operand 16 states. [2020-09-17 14:36:40,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:36:40,472 INFO L93 Difference]: Finished difference Result 118020 states and 538147 transitions. [2020-09-17 14:36:40,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:36:40,473 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 14:36:40,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:36:40,848 INFO L225 Difference]: With dead ends: 118020 [2020-09-17 14:36:40,848 INFO L226 Difference]: Without dead ends: 117980 [2020-09-17 14:36:40,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 14:36:42,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117980 states. [2020-09-17 14:36:44,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117980 to 33387. [2020-09-17 14:36:44,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33387 states. [2020-09-17 14:36:44,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33387 states to 33387 states and 177693 transitions. [2020-09-17 14:36:44,210 INFO L78 Accepts]: Start accepts. Automaton has 33387 states and 177693 transitions. Word has length 25 [2020-09-17 14:36:44,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:36:44,211 INFO L479 AbstractCegarLoop]: Abstraction has 33387 states and 177693 transitions. [2020-09-17 14:36:44,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 14:36:44,211 INFO L276 IsEmpty]: Start isEmpty. Operand 33387 states and 177693 transitions. [2020-09-17 14:36:44,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:36:44,213 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:36:44,213 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:36:44,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:36:44,414 INFO L427 AbstractCegarLoop]: === Iteration 36 === [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]=== [2020-09-17 14:36:44,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:36:44,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1147615783, now seen corresponding path program 5 times [2020-09-17 14:36:44,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:36:44,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577130892] [2020-09-17 14:36:44,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:36:44,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:36:44,510 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:36:44,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577130892] [2020-09-17 14:36:44,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:36:44,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 14:36:44,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252123597] [2020-09-17 14:36:44,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 14:36:44,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:36:44,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 14:36:44,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 14:36:44,512 INFO L87 Difference]: Start difference. First operand 33387 states and 177693 transitions. Second operand 9 states. [2020-09-17 14:36:46,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:36:46,398 INFO L93 Difference]: Finished difference Result 118363 states and 539792 transitions. [2020-09-17 14:36:46,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:36:46,398 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 14:36:46,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:36:47,785 INFO L225 Difference]: With dead ends: 118363 [2020-09-17 14:36:47,785 INFO L226 Difference]: Without dead ends: 118333 [2020-09-17 14:36:47,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 14:36:49,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118333 states. [2020-09-17 14:36:50,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118333 to 32908. [2020-09-17 14:36:50,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32908 states. [2020-09-17 14:36:50,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32908 states to 32908 states and 175152 transitions. [2020-09-17 14:36:50,326 INFO L78 Accepts]: Start accepts. Automaton has 32908 states and 175152 transitions. Word has length 25 [2020-09-17 14:36:50,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:36:50,326 INFO L479 AbstractCegarLoop]: Abstraction has 32908 states and 175152 transitions. [2020-09-17 14:36:50,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 14:36:50,326 INFO L276 IsEmpty]: Start isEmpty. Operand 32908 states and 175152 transitions. [2020-09-17 14:36:50,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:36:50,330 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:36:50,330 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:36:50,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2020-09-17 14:36:50,330 INFO L427 AbstractCegarLoop]: === Iteration 37 === [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]=== [2020-09-17 14:36:50,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:36:50,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1147599384, now seen corresponding path program 5 times [2020-09-17 14:36:50,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:36:50,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038005394] [2020-09-17 14:36:50,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:36:50,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:36:50,431 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:36:50,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038005394] [2020-09-17 14:36:50,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:36:50,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 14:36:50,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753571374] [2020-09-17 14:36:50,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 14:36:50,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:36:50,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 14:36:50,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 14:36:50,434 INFO L87 Difference]: Start difference. First operand 32908 states and 175152 transitions. Second operand 9 states. [2020-09-17 14:36:52,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:36:52,545 INFO L93 Difference]: Finished difference Result 117027 states and 533313 transitions. [2020-09-17 14:36:52,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:36:52,546 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 14:36:52,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:36:52,937 INFO L225 Difference]: With dead ends: 117027 [2020-09-17 14:36:52,938 INFO L226 Difference]: Without dead ends: 116997 [2020-09-17 14:36:52,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 14:36:54,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116997 states. [2020-09-17 14:36:55,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116997 to 32394. [2020-09-17 14:36:55,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32394 states. [2020-09-17 14:36:59,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32394 states to 32394 states and 172458 transitions. [2020-09-17 14:36:59,193 INFO L78 Accepts]: Start accepts. Automaton has 32394 states and 172458 transitions. Word has length 25 [2020-09-17 14:36:59,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:36:59,193 INFO L479 AbstractCegarLoop]: Abstraction has 32394 states and 172458 transitions. [2020-09-17 14:36:59,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 14:36:59,193 INFO L276 IsEmpty]: Start isEmpty. Operand 32394 states and 172458 transitions. [2020-09-17 14:36:59,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:36:59,196 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:36:59,196 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:36:59,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2020-09-17 14:36:59,196 INFO L427 AbstractCegarLoop]: === Iteration 38 === [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]=== [2020-09-17 14:36:59,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:36:59,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1136664103, now seen corresponding path program 6 times [2020-09-17 14:36:59,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:36:59,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560268752] [2020-09-17 14:36:59,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:36:59,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:36:59,293 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:36:59,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560268752] [2020-09-17 14:36:59,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:36:59,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 14:36:59,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140390179] [2020-09-17 14:36:59,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 14:36:59,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:36:59,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 14:36:59,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 14:36:59,294 INFO L87 Difference]: Start difference. First operand 32394 states and 172458 transitions. Second operand 9 states. [2020-09-17 14:37:00,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:37:00,965 INFO L93 Difference]: Finished difference Result 116213 states and 529114 transitions. [2020-09-17 14:37:00,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:37:00,966 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 14:37:00,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:37:01,364 INFO L225 Difference]: With dead ends: 116213 [2020-09-17 14:37:01,364 INFO L226 Difference]: Without dead ends: 116173 [2020-09-17 14:37:01,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 14:37:02,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116173 states. [2020-09-17 14:37:04,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116173 to 31530. [2020-09-17 14:37:04,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31530 states. [2020-09-17 14:37:04,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31530 states to 31530 states and 168028 transitions. [2020-09-17 14:37:04,652 INFO L78 Accepts]: Start accepts. Automaton has 31530 states and 168028 transitions. Word has length 25 [2020-09-17 14:37:04,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:37:04,652 INFO L479 AbstractCegarLoop]: Abstraction has 31530 states and 168028 transitions. [2020-09-17 14:37:04,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 14:37:04,652 INFO L276 IsEmpty]: Start isEmpty. Operand 31530 states and 168028 transitions. [2020-09-17 14:37:04,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:37:04,656 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:37:04,656 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:37:04,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2020-09-17 14:37:04,656 INFO L427 AbstractCegarLoop]: === Iteration 39 === [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]=== [2020-09-17 14:37:04,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:37:04,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1136636296, now seen corresponding path program 5 times [2020-09-17 14:37:04,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:37:04,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908368820] [2020-09-17 14:37:04,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:37:04,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:37:04,749 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:37:04,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908368820] [2020-09-17 14:37:04,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:37:04,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 14:37:04,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723991087] [2020-09-17 14:37:04,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 14:37:04,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:37:04,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 14:37:04,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 14:37:04,751 INFO L87 Difference]: Start difference. First operand 31530 states and 168028 transitions. Second operand 9 states. [2020-09-17 14:37:06,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:37:06,580 INFO L93 Difference]: Finished difference Result 115048 states and 523573 transitions. [2020-09-17 14:37:06,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:37:06,581 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 14:37:06,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:37:06,962 INFO L225 Difference]: With dead ends: 115048 [2020-09-17 14:37:06,962 INFO L226 Difference]: Without dead ends: 115018 [2020-09-17 14:37:06,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 14:37:08,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115018 states. [2020-09-17 14:37:10,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115018 to 31199. [2020-09-17 14:37:10,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31199 states. [2020-09-17 14:37:10,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31199 states to 31199 states and 166334 transitions. [2020-09-17 14:37:10,237 INFO L78 Accepts]: Start accepts. Automaton has 31199 states and 166334 transitions. Word has length 25 [2020-09-17 14:37:10,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:37:10,237 INFO L479 AbstractCegarLoop]: Abstraction has 31199 states and 166334 transitions. [2020-09-17 14:37:10,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 14:37:10,237 INFO L276 IsEmpty]: Start isEmpty. Operand 31199 states and 166334 transitions. [2020-09-17 14:37:10,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:37:10,240 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:37:10,240 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:37:10,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2020-09-17 14:37:10,240 INFO L427 AbstractCegarLoop]: === Iteration 40 === [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]=== [2020-09-17 14:37:10,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:37:10,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1120904664, now seen corresponding path program 6 times [2020-09-17 14:37:10,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:37:10,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143939914] [2020-09-17 14:37:10,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:37:10,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:37:10,336 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:37:10,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143939914] [2020-09-17 14:37:10,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:37:10,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 14:37:10,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557962874] [2020-09-17 14:37:10,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 14:37:10,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:37:10,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 14:37:10,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 14:37:10,338 INFO L87 Difference]: Start difference. First operand 31199 states and 166334 transitions. Second operand 9 states. [2020-09-17 14:37:12,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:37:12,099 INFO L93 Difference]: Finished difference Result 114413 states and 520399 transitions. [2020-09-17 14:37:12,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:37:12,100 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 14:37:12,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:37:12,483 INFO L225 Difference]: With dead ends: 114413 [2020-09-17 14:37:12,484 INFO L226 Difference]: Without dead ends: 114373 [2020-09-17 14:37:12,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 14:37:14,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114373 states. [2020-09-17 14:37:15,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114373 to 30592. [2020-09-17 14:37:15,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30592 states. [2020-09-17 14:37:15,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30592 states to 30592 states and 163260 transitions. [2020-09-17 14:37:15,640 INFO L78 Accepts]: Start accepts. Automaton has 30592 states and 163260 transitions. Word has length 25 [2020-09-17 14:37:15,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:37:15,640 INFO L479 AbstractCegarLoop]: Abstraction has 30592 states and 163260 transitions. [2020-09-17 14:37:15,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 14:37:15,640 INFO L276 IsEmpty]: Start isEmpty. Operand 30592 states and 163260 transitions. [2020-09-17 14:37:15,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:37:15,642 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:37:15,642 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:37:15,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2020-09-17 14:37:15,643 INFO L427 AbstractCegarLoop]: === Iteration 41 === [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]=== [2020-09-17 14:37:15,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:37:15,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1120893256, now seen corresponding path program 6 times [2020-09-17 14:37:15,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:37:15,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395293876] [2020-09-17 14:37:15,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:37:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:37:15,737 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:37:15,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395293876] [2020-09-17 14:37:15,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:37:15,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 14:37:15,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038160037] [2020-09-17 14:37:15,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 14:37:15,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:37:15,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 14:37:15,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 14:37:15,739 INFO L87 Difference]: Start difference. First operand 30592 states and 163260 transitions. Second operand 9 states. [2020-09-17 14:37:18,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:37:18,021 INFO L93 Difference]: Finished difference Result 113466 states and 515911 transitions. [2020-09-17 14:37:18,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 14:37:18,022 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 14:37:18,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:37:18,377 INFO L225 Difference]: With dead ends: 113466 [2020-09-17 14:37:18,377 INFO L226 Difference]: Without dead ends: 113426 [2020-09-17 14:37:18,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 14:37:19,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113426 states. [2020-09-17 14:37:20,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113426 to 29802. [2020-09-17 14:37:20,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29802 states. [2020-09-17 14:37:20,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29802 states to 29802 states and 159321 transitions. [2020-09-17 14:37:20,905 INFO L78 Accepts]: Start accepts. Automaton has 29802 states and 159321 transitions. Word has length 25 [2020-09-17 14:37:20,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:37:20,905 INFO L479 AbstractCegarLoop]: Abstraction has 29802 states and 159321 transitions. [2020-09-17 14:37:20,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 14:37:20,905 INFO L276 IsEmpty]: Start isEmpty. Operand 29802 states and 159321 transitions. [2020-09-17 14:37:20,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:37:20,908 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:37:20,908 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:37:20,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2020-09-17 14:37:20,908 INFO L427 AbstractCegarLoop]: === Iteration 42 === [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]=== [2020-09-17 14:37:20,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:37:20,908 INFO L82 PathProgramCache]: Analyzing trace with hash 123792641, now seen corresponding path program 1 times [2020-09-17 14:37:20,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:37:20,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176826473] [2020-09-17 14:37:20,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:37:20,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:37:20,962 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-17 14:37:20,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176826473] [2020-09-17 14:37:20,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:37:20,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 14:37:20,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789396088] [2020-09-17 14:37:20,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 14:37:20,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:37:20,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 14:37:20,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 14:37:20,964 INFO L87 Difference]: Start difference. First operand 29802 states and 159321 transitions. Second operand 5 states. [2020-09-17 14:37:21,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:37:21,443 INFO L93 Difference]: Finished difference Result 53165 states and 272731 transitions. [2020-09-17 14:37:21,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 14:37:21,444 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-09-17 14:37:21,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:37:22,090 INFO L225 Difference]: With dead ends: 53165 [2020-09-17 14:37:22,090 INFO L226 Difference]: Without dead ends: 53102 [2020-09-17 14:37:22,091 INFO L675 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 [2020-09-17 14:37:22,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53102 states. [2020-09-17 14:37:23,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53102 to 37675. [2020-09-17 14:37:23,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37675 states. [2020-09-17 14:37:23,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37675 states to 37675 states and 201015 transitions. [2020-09-17 14:37:23,805 INFO L78 Accepts]: Start accepts. Automaton has 37675 states and 201015 transitions. Word has length 25 [2020-09-17 14:37:23,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:37:23,806 INFO L479 AbstractCegarLoop]: Abstraction has 37675 states and 201015 transitions. [2020-09-17 14:37:23,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 14:37:23,806 INFO L276 IsEmpty]: Start isEmpty. Operand 37675 states and 201015 transitions. [2020-09-17 14:37:23,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:37:23,809 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:37:23,809 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:37:23,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2020-09-17 14:37:23,810 INFO L427 AbstractCegarLoop]: === Iteration 43 === [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]=== [2020-09-17 14:37:23,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:37:23,810 INFO L82 PathProgramCache]: Analyzing trace with hash -480284107, now seen corresponding path program 1 times [2020-09-17 14:37:23,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:37:23,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755624155] [2020-09-17 14:37:23,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:37:23,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:37:23,940 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:37:23,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755624155] [2020-09-17 14:37:23,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840517259] [2020-09-17 14:37:23,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:37:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:37:24,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 14:37:24,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:37:24,242 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:37:24,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:37:24,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 14:37:24,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968094237] [2020-09-17 14:37:24,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 14:37:24,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:37:24,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 14:37:24,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:37:24,244 INFO L87 Difference]: Start difference. First operand 37675 states and 201015 transitions. Second operand 20 states. [2020-09-17 14:37:29,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:37:29,052 INFO L93 Difference]: Finished difference Result 186148 states and 815009 transitions. [2020-09-17 14:37:29,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:37:29,053 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 14:37:29,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:37:29,736 INFO L225 Difference]: With dead ends: 186148 [2020-09-17 14:37:29,736 INFO L226 Difference]: Without dead ends: 186130 [2020-09-17 14:37:29,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1882 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1283, Invalid=4723, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 14:37:31,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186130 states. [2020-09-17 14:37:37,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186130 to 37780. [2020-09-17 14:37:37,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37780 states. [2020-09-17 14:37:37,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37780 states to 37780 states and 201508 transitions. [2020-09-17 14:37:37,430 INFO L78 Accepts]: Start accepts. Automaton has 37780 states and 201508 transitions. Word has length 27 [2020-09-17 14:37:37,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:37:37,430 INFO L479 AbstractCegarLoop]: Abstraction has 37780 states and 201508 transitions. [2020-09-17 14:37:37,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 14:37:37,430 INFO L276 IsEmpty]: Start isEmpty. Operand 37780 states and 201508 transitions. [2020-09-17 14:37:37,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:37:37,433 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:37:37,433 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:37:37,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2020-09-17 14:37:37,634 INFO L427 AbstractCegarLoop]: === Iteration 44 === [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]=== [2020-09-17 14:37:37,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:37:37,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1807002315, now seen corresponding path program 2 times [2020-09-17 14:37:37,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:37:37,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69113892] [2020-09-17 14:37:37,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:37:37,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:37:37,758 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 14:37:37,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69113892] [2020-09-17 14:37:37,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566990158] [2020-09-17 14:37:37,759 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:37:37,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 14:37:37,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:37:37,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 14:37:37,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:37:38,087 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 14:37:38,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:37:38,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 14:37:38,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246242560] [2020-09-17 14:37:38,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 14:37:38,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:37:38,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 14:37:38,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:37:38,088 INFO L87 Difference]: Start difference. First operand 37780 states and 201508 transitions. Second operand 20 states. [2020-09-17 14:37:43,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:37:43,095 INFO L93 Difference]: Finished difference Result 185731 states and 813247 transitions. [2020-09-17 14:37:43,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:37:43,096 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 14:37:43,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:37:43,737 INFO L225 Difference]: With dead ends: 185731 [2020-09-17 14:37:43,737 INFO L226 Difference]: Without dead ends: 185707 [2020-09-17 14:37:43,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1874 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1283, Invalid=4723, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 14:37:45,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185707 states. [2020-09-17 14:37:51,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185707 to 37506. [2020-09-17 14:37:51,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37506 states. [2020-09-17 14:37:51,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37506 states to 37506 states and 200034 transitions. [2020-09-17 14:37:51,663 INFO L78 Accepts]: Start accepts. Automaton has 37506 states and 200034 transitions. Word has length 27 [2020-09-17 14:37:51,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:37:51,663 INFO L479 AbstractCegarLoop]: Abstraction has 37506 states and 200034 transitions. [2020-09-17 14:37:51,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 14:37:51,663 INFO L276 IsEmpty]: Start isEmpty. Operand 37506 states and 200034 transitions. [2020-09-17 14:37:51,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:37:51,667 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:37:51,667 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:37:51,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2020-09-17 14:37:51,868 INFO L427 AbstractCegarLoop]: === Iteration 45 === [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]=== [2020-09-17 14:37:51,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:37:51,868 INFO L82 PathProgramCache]: Analyzing trace with hash 2078895349, now seen corresponding path program 3 times [2020-09-17 14:37:51,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:37:51,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404478443] [2020-09-17 14:37:51,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:37:51,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:37:52,002 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 14:37:52,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404478443] [2020-09-17 14:37:52,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238499699] [2020-09-17 14:37:52,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:37:52,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-09-17 14:37:52,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:37:52,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 14:37:52,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:37:52,335 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 14:37:52,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:37:52,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 14:37:52,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983082313] [2020-09-17 14:37:52,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 14:37:52,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:37:52,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 14:37:52,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:37:52,337 INFO L87 Difference]: Start difference. First operand 37506 states and 200034 transitions. Second operand 20 states. [2020-09-17 14:37:57,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:37:57,495 INFO L93 Difference]: Finished difference Result 185071 states and 810108 transitions. [2020-09-17 14:37:57,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:37:57,496 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 14:37:57,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:37:58,144 INFO L225 Difference]: With dead ends: 185071 [2020-09-17 14:37:58,144 INFO L226 Difference]: Without dead ends: 185053 [2020-09-17 14:37:58,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1876 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1283, Invalid=4723, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 14:37:59,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185053 states. [2020-09-17 14:38:05,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185053 to 37607. [2020-09-17 14:38:05,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37607 states. [2020-09-17 14:38:05,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37607 states to 37607 states and 200519 transitions. [2020-09-17 14:38:05,955 INFO L78 Accepts]: Start accepts. Automaton has 37607 states and 200519 transitions. Word has length 27 [2020-09-17 14:38:05,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:38:05,955 INFO L479 AbstractCegarLoop]: Abstraction has 37607 states and 200519 transitions. [2020-09-17 14:38:05,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 14:38:05,955 INFO L276 IsEmpty]: Start isEmpty. Operand 37607 states and 200519 transitions. [2020-09-17 14:38:05,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:38:05,958 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:38:05,959 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:38:06,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:38:06,159 INFO L427 AbstractCegarLoop]: === Iteration 46 === [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]=== [2020-09-17 14:38:06,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:38:06,160 INFO L82 PathProgramCache]: Analyzing trace with hash -651887627, now seen corresponding path program 4 times [2020-09-17 14:38:06,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:38:06,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927259343] [2020-09-17 14:38:06,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:38:06,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:38:06,289 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 14:38:06,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927259343] [2020-09-17 14:38:06,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726728738] [2020-09-17 14:38:06,290 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:38:06,413 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 14:38:06,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:38:06,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 14:38:06,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:38:06,607 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 14:38:06,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:38:06,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 14:38:06,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767719733] [2020-09-17 14:38:06,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 14:38:06,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:38:06,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 14:38:06,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:38:06,609 INFO L87 Difference]: Start difference. First operand 37607 states and 200519 transitions. Second operand 20 states. [2020-09-17 14:38:11,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:38:11,755 INFO L93 Difference]: Finished difference Result 184772 states and 808751 transitions. [2020-09-17 14:38:11,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:38:11,756 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 14:38:11,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:38:12,393 INFO L225 Difference]: With dead ends: 184772 [2020-09-17 14:38:12,393 INFO L226 Difference]: Without dead ends: 184748 [2020-09-17 14:38:12,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1870 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1283, Invalid=4723, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 14:38:14,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184748 states. [2020-09-17 14:38:19,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184748 to 37341. [2020-09-17 14:38:19,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37341 states. [2020-09-17 14:38:20,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37341 states to 37341 states and 199065 transitions. [2020-09-17 14:38:20,088 INFO L78 Accepts]: Start accepts. Automaton has 37341 states and 199065 transitions. Word has length 27 [2020-09-17 14:38:20,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:38:20,088 INFO L479 AbstractCegarLoop]: Abstraction has 37341 states and 199065 transitions. [2020-09-17 14:38:20,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 14:38:20,088 INFO L276 IsEmpty]: Start isEmpty. Operand 37341 states and 199065 transitions. [2020-09-17 14:38:20,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:38:20,091 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:38:20,092 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:38:20,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:38:20,292 INFO L427 AbstractCegarLoop]: === Iteration 47 === [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]=== [2020-09-17 14:38:20,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:38:20,293 INFO L82 PathProgramCache]: Analyzing trace with hash -11846923, now seen corresponding path program 5 times [2020-09-17 14:38:20,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:38:20,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498745339] [2020-09-17 14:38:20,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:38:20,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:38:20,428 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 14:38:20,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498745339] [2020-09-17 14:38:20,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129576760] [2020-09-17 14:38:20,429 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:38:20,529 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-09-17 14:38:20,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:38:20,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 14:38:20,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:38:20,746 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 14:38:20,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:38:20,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 14:38:20,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857821571] [2020-09-17 14:38:20,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 14:38:20,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:38:20,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 14:38:20,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:38:20,747 INFO L87 Difference]: Start difference. First operand 37341 states and 199065 transitions. Second operand 20 states. [2020-09-17 14:38:26,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:38:26,154 INFO L93 Difference]: Finished difference Result 184120 states and 805632 transitions. [2020-09-17 14:38:26,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:38:26,155 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 14:38:26,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:38:26,834 INFO L225 Difference]: With dead ends: 184120 [2020-09-17 14:38:26,834 INFO L226 Difference]: Without dead ends: 184102 [2020-09-17 14:38:26,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1869 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1283, Invalid=4723, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 14:38:28,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184102 states. [2020-09-17 14:38:31,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184102 to 37438. [2020-09-17 14:38:31,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37438 states. [2020-09-17 14:38:31,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37438 states to 37438 states and 199538 transitions. [2020-09-17 14:38:31,546 INFO L78 Accepts]: Start accepts. Automaton has 37438 states and 199538 transitions. Word has length 27 [2020-09-17 14:38:31,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:38:31,546 INFO L479 AbstractCegarLoop]: Abstraction has 37438 states and 199538 transitions. [2020-09-17 14:38:31,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 14:38:31,546 INFO L276 IsEmpty]: Start isEmpty. Operand 37438 states and 199538 transitions. [2020-09-17 14:38:31,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:38:31,550 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:38:31,550 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:38:31,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:38:31,751 INFO L427 AbstractCegarLoop]: === Iteration 48 === [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]=== [2020-09-17 14:38:31,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:38:31,751 INFO L82 PathProgramCache]: Analyzing trace with hash -22798603, now seen corresponding path program 6 times [2020-09-17 14:38:31,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:38:31,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081282067] [2020-09-17 14:38:31,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:38:31,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:38:31,886 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 14:38:31,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081282067] [2020-09-17 14:38:31,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772618925] [2020-09-17 14:38:31,887 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:38:32,016 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-09-17 14:38:32,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:38:32,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 14:38:32,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:38:32,230 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 14:38:32,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:38:32,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 14:38:32,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064270840] [2020-09-17 14:38:32,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 14:38:32,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:38:32,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 14:38:32,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:38:32,232 INFO L87 Difference]: Start difference. First operand 37438 states and 199538 transitions. Second operand 20 states. [2020-09-17 14:38:37,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:38:37,257 INFO L93 Difference]: Finished difference Result 183711 states and 803890 transitions. [2020-09-17 14:38:37,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:38:37,258 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 14:38:37,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:38:37,873 INFO L225 Difference]: With dead ends: 183711 [2020-09-17 14:38:37,874 INFO L226 Difference]: Without dead ends: 183683 [2020-09-17 14:38:37,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1858 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1283, Invalid=4723, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 14:38:40,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183683 states. [2020-09-17 14:38:42,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183683 to 37176. [2020-09-17 14:38:42,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37176 states. [2020-09-17 14:38:43,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37176 states to 37176 states and 198103 transitions. [2020-09-17 14:38:43,680 INFO L78 Accepts]: Start accepts. Automaton has 37176 states and 198103 transitions. Word has length 27 [2020-09-17 14:38:43,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:38:43,680 INFO L479 AbstractCegarLoop]: Abstraction has 37176 states and 198103 transitions. [2020-09-17 14:38:43,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 14:38:43,681 INFO L276 IsEmpty]: Start isEmpty. Operand 37176 states and 198103 transitions. [2020-09-17 14:38:43,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:38:43,685 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:38:43,685 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:38:43,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2020-09-17 14:38:43,892 INFO L427 AbstractCegarLoop]: === Iteration 49 === [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]=== [2020-09-17 14:38:43,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:38:43,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1035670065, now seen corresponding path program 1 times [2020-09-17 14:38:43,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:38:43,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720658432] [2020-09-17 14:38:43,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:38:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:38:43,971 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-17 14:38:43,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720658432] [2020-09-17 14:38:43,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110049358] [2020-09-17 14:38:43,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:38:44,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:38:44,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 14:38:44,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:38:44,206 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-17 14:38:44,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:38:44,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 14:38:44,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235224087] [2020-09-17 14:38:44,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 14:38:44,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:38:44,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 14:38:44,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-17 14:38:44,209 INFO L87 Difference]: Start difference. First operand 37176 states and 198103 transitions. Second operand 12 states. [2020-09-17 14:38:45,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:38:45,156 INFO L93 Difference]: Finished difference Result 82213 states and 399726 transitions. [2020-09-17 14:38:45,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:38:45,157 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-09-17 14:38:45,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:38:45,483 INFO L225 Difference]: With dead ends: 82213 [2020-09-17 14:38:45,483 INFO L226 Difference]: Without dead ends: 82165 [2020-09-17 14:38:45,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:38:46,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82165 states. [2020-09-17 14:38:48,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82165 to 38439. [2020-09-17 14:38:48,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38439 states. [2020-09-17 14:38:48,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38439 states to 38439 states and 204452 transitions. [2020-09-17 14:38:48,365 INFO L78 Accepts]: Start accepts. Automaton has 38439 states and 204452 transitions. Word has length 27 [2020-09-17 14:38:48,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:38:48,365 INFO L479 AbstractCegarLoop]: Abstraction has 38439 states and 204452 transitions. [2020-09-17 14:38:48,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 14:38:48,366 INFO L276 IsEmpty]: Start isEmpty. Operand 38439 states and 204452 transitions. [2020-09-17 14:38:48,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:38:48,370 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:38:48,370 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:38:48,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2020-09-17 14:38:48,571 INFO L427 AbstractCegarLoop]: === Iteration 50 === [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]=== [2020-09-17 14:38:48,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:38:48,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1753210507, now seen corresponding path program 7 times [2020-09-17 14:38:48,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:38:48,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920375289] [2020-09-17 14:38:48,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:38:48,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:38:48,705 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:38:48,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920375289] [2020-09-17 14:38:48,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165617238] [2020-09-17 14:38:48,706 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:38:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:38:48,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 14:38:48,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:38:49,038 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:38:49,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:38:49,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 14:38:49,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680701205] [2020-09-17 14:38:49,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 14:38:49,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:38:49,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 14:38:49,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:38:49,040 INFO L87 Difference]: Start difference. First operand 38439 states and 204452 transitions. Second operand 20 states. [2020-09-17 14:38:53,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:38:53,872 INFO L93 Difference]: Finished difference Result 183266 states and 800955 transitions. [2020-09-17 14:38:53,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:38:53,873 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 14:38:53,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:38:54,461 INFO L225 Difference]: With dead ends: 183266 [2020-09-17 14:38:54,461 INFO L226 Difference]: Without dead ends: 183248 [2020-09-17 14:38:54,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1878 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1283, Invalid=4723, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 14:38:59,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183248 states. [2020-09-17 14:39:01,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183248 to 38274. [2020-09-17 14:39:01,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38274 states. [2020-09-17 14:39:02,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38274 states to 38274 states and 203647 transitions. [2020-09-17 14:39:02,017 INFO L78 Accepts]: Start accepts. Automaton has 38274 states and 203647 transitions. Word has length 27 [2020-09-17 14:39:02,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:39:02,018 INFO L479 AbstractCegarLoop]: Abstraction has 38274 states and 203647 transitions. [2020-09-17 14:39:02,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 14:39:02,018 INFO L276 IsEmpty]: Start isEmpty. Operand 38274 states and 203647 transitions. [2020-09-17 14:39:02,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:39:02,022 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:39:02,022 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:39:02,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2020-09-17 14:39:02,223 INFO L427 AbstractCegarLoop]: === Iteration 51 === [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]=== [2020-09-17 14:39:02,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:39:02,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1215038581, now seen corresponding path program 8 times [2020-09-17 14:39:02,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:39:02,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773148942] [2020-09-17 14:39:02,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:39:02,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:39:02,358 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 14:39:02,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773148942] [2020-09-17 14:39:02,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076695098] [2020-09-17 14:39:02,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:39:02,484 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 14:39:02,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:39:02,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 14:39:02,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:39:02,705 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 14:39:02,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:39:02,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 14:39:02,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484968051] [2020-09-17 14:39:02,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 14:39:02,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:39:02,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 14:39:02,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:39:02,707 INFO L87 Difference]: Start difference. First operand 38274 states and 203647 transitions. Second operand 20 states. [2020-09-17 14:39:08,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:39:08,664 INFO L93 Difference]: Finished difference Result 182849 states and 799193 transitions. [2020-09-17 14:39:08,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:39:08,665 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 14:39:08,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:39:09,280 INFO L225 Difference]: With dead ends: 182849 [2020-09-17 14:39:09,280 INFO L226 Difference]: Without dead ends: 182825 [2020-09-17 14:39:09,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1870 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1283, Invalid=4723, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 14:39:11,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182825 states. [2020-09-17 14:39:16,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182825 to 37880. [2020-09-17 14:39:16,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37880 states. [2020-09-17 14:39:16,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37880 states to 37880 states and 201614 transitions. [2020-09-17 14:39:16,890 INFO L78 Accepts]: Start accepts. Automaton has 37880 states and 201614 transitions. Word has length 27 [2020-09-17 14:39:16,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:39:16,890 INFO L479 AbstractCegarLoop]: Abstraction has 37880 states and 201614 transitions. [2020-09-17 14:39:16,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 14:39:16,890 INFO L276 IsEmpty]: Start isEmpty. Operand 37880 states and 201614 transitions. [2020-09-17 14:39:16,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:39:16,895 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:39:16,895 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:39:17,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2020-09-17 14:39:17,096 INFO L427 AbstractCegarLoop]: === Iteration 52 === [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]=== [2020-09-17 14:39:17,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:39:17,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1641326347, now seen corresponding path program 9 times [2020-09-17 14:39:17,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:39:17,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518872340] [2020-09-17 14:39:17,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:39:17,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:39:17,230 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:39:17,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518872340] [2020-09-17 14:39:17,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485482634] [2020-09-17 14:39:17,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:39:17,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-09-17 14:39:17,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:39:17,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 14:39:17,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:39:17,996 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:39:17,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:39:17,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 14:39:17,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689532369] [2020-09-17 14:39:17,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 14:39:17,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:39:17,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 14:39:17,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:39:17,998 INFO L87 Difference]: Start difference. First operand 37880 states and 201614 transitions. Second operand 20 states. [2020-09-17 14:39:23,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:39:23,180 INFO L93 Difference]: Finished difference Result 183813 states and 803277 transitions. [2020-09-17 14:39:23,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:39:23,181 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 14:39:23,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:39:24,868 INFO L225 Difference]: With dead ends: 183813 [2020-09-17 14:39:24,868 INFO L226 Difference]: Without dead ends: 183795 [2020-09-17 14:39:24,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1874 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1283, Invalid=4723, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 14:39:26,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183795 states. [2020-09-17 14:39:32,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183795 to 37981. [2020-09-17 14:39:32,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37981 states. [2020-09-17 14:39:32,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37981 states to 37981 states and 202099 transitions. [2020-09-17 14:39:32,517 INFO L78 Accepts]: Start accepts. Automaton has 37981 states and 202099 transitions. Word has length 27 [2020-09-17 14:39:32,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:39:32,517 INFO L479 AbstractCegarLoop]: Abstraction has 37981 states and 202099 transitions. [2020-09-17 14:39:32,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 14:39:32,518 INFO L276 IsEmpty]: Start isEmpty. Operand 37981 states and 202099 transitions. [2020-09-17 14:39:32,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:39:32,523 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:39:32,523 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:39:32,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2020-09-17 14:39:32,734 INFO L427 AbstractCegarLoop]: === Iteration 53 === [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]=== [2020-09-17 14:39:32,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:39:32,735 INFO L82 PathProgramCache]: Analyzing trace with hash -144395083, now seen corresponding path program 10 times [2020-09-17 14:39:32,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:39:32,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056710722] [2020-09-17 14:39:32,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:39:32,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:39:32,872 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:39:32,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056710722] [2020-09-17 14:39:32,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321430928] [2020-09-17 14:39:32,873 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:39:32,994 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 14:39:32,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:39:32,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 14:39:32,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:39:33,215 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 14:39:33,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:39:33,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 14:39:33,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299303211] [2020-09-17 14:39:33,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 14:39:33,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:39:33,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 14:39:33,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:39:33,217 INFO L87 Difference]: Start difference. First operand 37981 states and 202099 transitions. Second operand 20 states. [2020-09-17 14:39:38,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:39:38,770 INFO L93 Difference]: Finished difference Result 184566 states and 806586 transitions. [2020-09-17 14:39:38,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:39:38,771 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 14:39:38,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:39:39,357 INFO L225 Difference]: With dead ends: 184566 [2020-09-17 14:39:39,357 INFO L226 Difference]: Without dead ends: 184542 [2020-09-17 14:39:39,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1873 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1283, Invalid=4723, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 14:39:42,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184542 states. [2020-09-17 14:39:44,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184542 to 37715. [2020-09-17 14:39:44,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37715 states. [2020-09-17 14:39:45,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37715 states to 37715 states and 200645 transitions. [2020-09-17 14:39:45,033 INFO L78 Accepts]: Start accepts. Automaton has 37715 states and 200645 transitions. Word has length 27 [2020-09-17 14:39:45,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:39:45,033 INFO L479 AbstractCegarLoop]: Abstraction has 37715 states and 200645 transitions. [2020-09-17 14:39:45,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 14:39:45,033 INFO L276 IsEmpty]: Start isEmpty. Operand 37715 states and 200645 transitions. [2020-09-17 14:39:45,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:39:45,039 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:39:45,039 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:39:45,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:39:45,253 INFO L427 AbstractCegarLoop]: === Iteration 54 === [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]=== [2020-09-17 14:39:45,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:39:45,254 INFO L82 PathProgramCache]: Analyzing trace with hash 484693941, now seen corresponding path program 11 times [2020-09-17 14:39:45,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:39:45,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083317046] [2020-09-17 14:39:45,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:39:45,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:39:45,400 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 14:39:45,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083317046] [2020-09-17 14:39:45,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483179717] [2020-09-17 14:39:45,400 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:39:45,521 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-09-17 14:39:45,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:39:45,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 14:39:45,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:39:45,804 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 14:39:45,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:39:45,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 14:39:45,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450495633] [2020-09-17 14:39:45,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 14:39:45,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:39:45,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 14:39:45,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:39:45,808 INFO L87 Difference]: Start difference. First operand 37715 states and 200645 transitions. Second operand 20 states. [2020-09-17 14:39:54,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:39:54,476 INFO L93 Difference]: Finished difference Result 183914 states and 803467 transitions. [2020-09-17 14:39:54,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:39:54,477 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 14:39:54,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:39:55,073 INFO L225 Difference]: With dead ends: 183914 [2020-09-17 14:39:55,073 INFO L226 Difference]: Without dead ends: 183896 [2020-09-17 14:39:55,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1861 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1283, Invalid=4723, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 14:39:56,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183896 states. [2020-09-17 14:39:59,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183896 to 37812. [2020-09-17 14:39:59,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37812 states. [2020-09-17 14:39:59,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37812 states to 37812 states and 201118 transitions. [2020-09-17 14:39:59,303 INFO L78 Accepts]: Start accepts. Automaton has 37812 states and 201118 transitions. Word has length 27 [2020-09-17 14:39:59,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:39:59,304 INFO L479 AbstractCegarLoop]: Abstraction has 37812 states and 201118 transitions. [2020-09-17 14:39:59,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 14:39:59,304 INFO L276 IsEmpty]: Start isEmpty. Operand 37812 states and 201118 transitions. [2020-09-17 14:39:59,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:39:59,307 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:39:59,308 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:39:59,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2020-09-17 14:39:59,508 INFO L427 AbstractCegarLoop]: === Iteration 55 === [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]=== [2020-09-17 14:39:59,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:39:59,509 INFO L82 PathProgramCache]: Analyzing trace with hash 468950901, now seen corresponding path program 12 times [2020-09-17 14:39:59,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:39:59,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486959873] [2020-09-17 14:39:59,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:39:59,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:39:59,653 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 14:39:59,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486959873] [2020-09-17 14:39:59,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025997428] [2020-09-17 14:39:59,654 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:39:59,766 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-09-17 14:39:59,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:39:59,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 14:39:59,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:39:59,980 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 14:39:59,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:39:59,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 14:39:59,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334482828] [2020-09-17 14:39:59,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 14:39:59,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:39:59,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 14:39:59,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:39:59,982 INFO L87 Difference]: Start difference. First operand 37812 states and 201118 transitions. Second operand 20 states. [2020-09-17 14:40:02,148 WARN L193 SmtUtils]: Spent 577.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-09-17 14:40:06,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:40:06,365 INFO L93 Difference]: Finished difference Result 182421 states and 796955 transitions. [2020-09-17 14:40:06,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:40:06,367 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 14:40:06,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:40:06,955 INFO L225 Difference]: With dead ends: 182421 [2020-09-17 14:40:06,956 INFO L226 Difference]: Without dead ends: 182393 [2020-09-17 14:40:06,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1871 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1283, Invalid=4723, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 14:40:09,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182393 states. [2020-09-17 14:40:15,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182393 to 37550. [2020-09-17 14:40:15,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37550 states. [2020-09-17 14:40:15,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37550 states to 37550 states and 199683 transitions. [2020-09-17 14:40:15,325 INFO L78 Accepts]: Start accepts. Automaton has 37550 states and 199683 transitions. Word has length 27 [2020-09-17 14:40:15,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:40:15,325 INFO L479 AbstractCegarLoop]: Abstraction has 37550 states and 199683 transitions. [2020-09-17 14:40:15,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 14:40:15,325 INFO L276 IsEmpty]: Start isEmpty. Operand 37550 states and 199683 transitions. [2020-09-17 14:40:15,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:40:15,329 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:40:15,329 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:40:15,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2020-09-17 14:40:15,530 INFO L427 AbstractCegarLoop]: === Iteration 56 === [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]=== [2020-09-17 14:40:15,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:40:15,530 INFO L82 PathProgramCache]: Analyzing trace with hash -528149714, now seen corresponding path program 1 times [2020-09-17 14:40:15,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:40:15,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111616740] [2020-09-17 14:40:15,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:40:15,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:40:15,608 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-17 14:40:15,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111616740] [2020-09-17 14:40:15,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297854199] [2020-09-17 14:40:15,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:40:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:40:15,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 14:40:15,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:40:15,820 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-17 14:40:15,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:40:15,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 14:40:15,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341478395] [2020-09-17 14:40:15,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 14:40:15,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:40:15,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 14:40:15,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-17 14:40:15,822 INFO L87 Difference]: Start difference. First operand 37550 states and 199683 transitions. Second operand 12 states. [2020-09-17 14:40:16,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:40:16,881 INFO L93 Difference]: Finished difference Result 86095 states and 418282 transitions. [2020-09-17 14:40:16,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:40:16,882 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-09-17 14:40:16,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:40:17,164 INFO L225 Difference]: With dead ends: 86095 [2020-09-17 14:40:17,164 INFO L226 Difference]: Without dead ends: 86043 [2020-09-17 14:40:17,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:40:18,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86043 states. [2020-09-17 14:40:19,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86043 to 39046. [2020-09-17 14:40:19,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39046 states. [2020-09-17 14:40:20,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39046 states to 39046 states and 207545 transitions. [2020-09-17 14:40:20,013 INFO L78 Accepts]: Start accepts. Automaton has 39046 states and 207545 transitions. Word has length 27 [2020-09-17 14:40:20,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:40:20,013 INFO L479 AbstractCegarLoop]: Abstraction has 39046 states and 207545 transitions. [2020-09-17 14:40:20,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 14:40:20,014 INFO L276 IsEmpty]: Start isEmpty. Operand 39046 states and 207545 transitions. [2020-09-17 14:40:20,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:40:20,018 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:40:20,018 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:40:20,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:40:20,219 INFO L427 AbstractCegarLoop]: === Iteration 57 === [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]=== [2020-09-17 14:40:20,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:40:20,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1008837557, now seen corresponding path program 13 times [2020-09-17 14:40:20,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:40:20,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519359649] [2020-09-17 14:40:20,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:40:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:40:20,357 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:40:20,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519359649] [2020-09-17 14:40:20,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109111257] [2020-09-17 14:40:20,358 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:40:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:40:20,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 14:40:20,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:40:20,711 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:40:20,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:40:20,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 14:40:20,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830686886] [2020-09-17 14:40:20,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 14:40:20,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:40:20,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 14:40:20,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:40:20,713 INFO L87 Difference]: Start difference. First operand 39046 states and 207545 transitions. Second operand 20 states. [2020-09-17 14:40:25,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:40:25,822 INFO L93 Difference]: Finished difference Result 182203 states and 795088 transitions. [2020-09-17 14:40:25,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:40:25,823 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 14:40:25,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:40:26,435 INFO L225 Difference]: With dead ends: 182203 [2020-09-17 14:40:26,435 INFO L226 Difference]: Without dead ends: 182185 [2020-09-17 14:40:26,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1874 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1283, Invalid=4723, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 14:40:29,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182185 states. [2020-09-17 14:40:34,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182185 to 38881. [2020-09-17 14:40:34,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38881 states. [2020-09-17 14:40:34,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38881 states to 38881 states and 206740 transitions. [2020-09-17 14:40:34,874 INFO L78 Accepts]: Start accepts. Automaton has 38881 states and 206740 transitions. Word has length 27 [2020-09-17 14:40:34,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:40:34,875 INFO L479 AbstractCegarLoop]: Abstraction has 38881 states and 206740 transitions. [2020-09-17 14:40:34,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 14:40:34,875 INFO L276 IsEmpty]: Start isEmpty. Operand 38881 states and 206740 transitions. [2020-09-17 14:40:34,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:40:34,881 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:40:34,881 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:40:35,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:40:35,095 INFO L427 AbstractCegarLoop]: === Iteration 58 === [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]=== [2020-09-17 14:40:35,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:40:35,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1789198475, now seen corresponding path program 14 times [2020-09-17 14:40:35,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:40:35,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379026312] [2020-09-17 14:40:35,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:40:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:40:35,233 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:40:35,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379026312] [2020-09-17 14:40:35,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302947338] [2020-09-17 14:40:35,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:40:35,357 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 14:40:35,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:40:35,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 14:40:35,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:40:35,575 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:40:35,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:40:35,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 14:40:35,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82023028] [2020-09-17 14:40:35,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 14:40:35,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:40:35,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 14:40:35,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:40:35,577 INFO L87 Difference]: Start difference. First operand 38881 states and 206740 transitions. Second operand 20 states. [2020-09-17 14:40:41,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:40:41,119 INFO L93 Difference]: Finished difference Result 182814 states and 797848 transitions. [2020-09-17 14:40:41,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:40:41,120 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 14:40:41,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:40:41,763 INFO L225 Difference]: With dead ends: 182814 [2020-09-17 14:40:41,763 INFO L226 Difference]: Without dead ends: 182790 [2020-09-17 14:40:41,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1874 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1283, Invalid=4723, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 14:40:43,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182790 states. [2020-09-17 14:40:46,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182790 to 38491. [2020-09-17 14:40:46,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38491 states. [2020-09-17 14:40:46,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38491 states to 38491 states and 204715 transitions. [2020-09-17 14:40:46,394 INFO L78 Accepts]: Start accepts. Automaton has 38491 states and 204715 transitions. Word has length 27 [2020-09-17 14:40:46,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:40:46,395 INFO L479 AbstractCegarLoop]: Abstraction has 38491 states and 204715 transitions. [2020-09-17 14:40:46,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 14:40:46,395 INFO L276 IsEmpty]: Start isEmpty. Operand 38491 states and 204715 transitions. [2020-09-17 14:40:46,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:40:46,399 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:40:46,400 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:40:46,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,69 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:40:46,600 INFO L427 AbstractCegarLoop]: === Iteration 59 === [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]=== [2020-09-17 14:40:46,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:40:46,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1120567157, now seen corresponding path program 15 times [2020-09-17 14:40:46,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:40:46,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840605906] [2020-09-17 14:40:46,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:40:46,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:40:46,732 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:40:46,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840605906] [2020-09-17 14:40:46,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101512036] [2020-09-17 14:40:46,733 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:40:46,854 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-17 14:40:46,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:40:46,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 14:40:46,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:40:47,078 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:40:47,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:40:47,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 14:40:47,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545159515] [2020-09-17 14:40:47,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 14:40:47,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:40:47,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 14:40:47,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:40:47,080 INFO L87 Difference]: Start difference. First operand 38491 states and 204715 transitions. Second operand 20 states. [2020-09-17 14:40:52,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:40:52,317 INFO L93 Difference]: Finished difference Result 181233 states and 790722 transitions. [2020-09-17 14:40:52,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:40:52,318 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 14:40:52,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:40:52,891 INFO L225 Difference]: With dead ends: 181233 [2020-09-17 14:40:52,891 INFO L226 Difference]: Without dead ends: 181215 [2020-09-17 14:40:52,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1871 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1283, Invalid=4723, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 14:40:58,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181215 states. [2020-09-17 14:41:00,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181215 to 38192. [2020-09-17 14:41:00,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38192 states. [2020-09-17 14:41:00,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38192 states to 38192 states and 203358 transitions. [2020-09-17 14:41:00,660 INFO L78 Accepts]: Start accepts. Automaton has 38192 states and 203358 transitions. Word has length 27 [2020-09-17 14:41:00,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:41:00,660 INFO L479 AbstractCegarLoop]: Abstraction has 38192 states and 203358 transitions. [2020-09-17 14:41:00,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 14:41:00,660 INFO L276 IsEmpty]: Start isEmpty. Operand 38192 states and 203358 transitions. [2020-09-17 14:41:00,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:41:00,664 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:41:00,664 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:41:00,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2020-09-17 14:41:00,865 INFO L427 AbstractCegarLoop]: === Iteration 60 === [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]=== [2020-09-17 14:41:00,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:41:00,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1610215819, now seen corresponding path program 16 times [2020-09-17 14:41:00,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:41:00,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142680216] [2020-09-17 14:41:00,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:41:00,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:41:01,008 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:41:01,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142680216] [2020-09-17 14:41:01,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999693817] [2020-09-17 14:41:01,009 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:41:01,127 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 14:41:01,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:41:01,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 14:41:01,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:41:01,371 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:41:01,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:41:01,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 14:41:01,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059629595] [2020-09-17 14:41:01,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 14:41:01,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:41:01,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 14:41:01,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:41:01,373 INFO L87 Difference]: Start difference. First operand 38192 states and 203358 transitions. Second operand 20 states. [2020-09-17 14:41:07,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:41:07,654 INFO L93 Difference]: Finished difference Result 181989 states and 794023 transitions. [2020-09-17 14:41:07,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:41:07,655 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 14:41:07,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:41:08,236 INFO L225 Difference]: With dead ends: 181989 [2020-09-17 14:41:08,236 INFO L226 Difference]: Without dead ends: 181965 [2020-09-17 14:41:08,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1866 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1283, Invalid=4723, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 14:41:09,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181965 states. [2020-09-17 14:41:12,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181965 to 37802. [2020-09-17 14:41:12,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37802 states. [2020-09-17 14:41:12,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37802 states to 37802 states and 201333 transitions. [2020-09-17 14:41:12,729 INFO L78 Accepts]: Start accepts. Automaton has 37802 states and 201333 transitions. Word has length 27 [2020-09-17 14:41:12,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:41:12,730 INFO L479 AbstractCegarLoop]: Abstraction has 37802 states and 201333 transitions. [2020-09-17 14:41:12,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 14:41:12,730 INFO L276 IsEmpty]: Start isEmpty. Operand 37802 states and 201333 transitions. [2020-09-17 14:41:12,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:41:12,734 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:41:12,734 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:41:12,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2020-09-17 14:41:12,935 INFO L427 AbstractCegarLoop]: === Iteration 61 === [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]=== [2020-09-17 14:41:12,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:41:12,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1846620555, now seen corresponding path program 17 times [2020-09-17 14:41:12,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:41:12,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900772670] [2020-09-17 14:41:12,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:41:12,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:41:13,068 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:41:13,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900772670] [2020-09-17 14:41:13,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243132379] [2020-09-17 14:41:13,069 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:41:13,187 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-09-17 14:41:13,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:41:13,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 14:41:13,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:41:13,413 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:41:13,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:41:13,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 14:41:13,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62815368] [2020-09-17 14:41:13,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 14:41:13,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:41:13,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 14:41:13,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:41:13,415 INFO L87 Difference]: Start difference. First operand 37802 states and 201333 transitions. Second operand 20 states. [2020-09-17 14:41:18,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:41:18,736 INFO L93 Difference]: Finished difference Result 183299 states and 799959 transitions. [2020-09-17 14:41:18,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:41:18,737 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 14:41:18,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:41:19,322 INFO L225 Difference]: With dead ends: 183299 [2020-09-17 14:41:19,322 INFO L226 Difference]: Without dead ends: 183281 [2020-09-17 14:41:19,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1870 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1283, Invalid=4723, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 14:41:24,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183281 states. [2020-09-17 14:41:26,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183281 to 37899. [2020-09-17 14:41:26,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37899 states. [2020-09-17 14:41:26,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37899 states to 37899 states and 201806 transitions. [2020-09-17 14:41:26,974 INFO L78 Accepts]: Start accepts. Automaton has 37899 states and 201806 transitions. Word has length 27 [2020-09-17 14:41:26,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:41:26,975 INFO L479 AbstractCegarLoop]: Abstraction has 37899 states and 201806 transitions. [2020-09-17 14:41:26,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 14:41:26,975 INFO L276 IsEmpty]: Start isEmpty. Operand 37899 states and 201806 transitions. [2020-09-17 14:41:26,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:41:26,980 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:41:26,980 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:41:27,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2020-09-17 14:41:27,181 INFO L427 AbstractCegarLoop]: === Iteration 62 === [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]=== [2020-09-17 14:41:27,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:41:27,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1873315275, now seen corresponding path program 18 times [2020-09-17 14:41:27,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:41:27,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941935890] [2020-09-17 14:41:27,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:41:27,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:41:27,314 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:41:27,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941935890] [2020-09-17 14:41:27,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125743556] [2020-09-17 14:41:27,315 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:41:27,439 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-09-17 14:41:27,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 14:41:27,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 14:41:27,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:41:27,658 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 14:41:27,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:41:27,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 14:41:27,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59283694] [2020-09-17 14:41:27,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 14:41:27,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:41:27,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 14:41:27,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:41:27,660 INFO L87 Difference]: Start difference. First operand 37899 states and 201806 transitions. Second operand 20 states. [2020-09-17 14:41:32,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:41:32,822 INFO L93 Difference]: Finished difference Result 182890 states and 798217 transitions. [2020-09-17 14:41:32,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:41:32,823 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 14:41:32,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:41:34,518 INFO L225 Difference]: With dead ends: 182890 [2020-09-17 14:41:34,518 INFO L226 Difference]: Without dead ends: 182862 [2020-09-17 14:41:34,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1861 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1283, Invalid=4723, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 14:41:36,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182862 states. [2020-09-17 14:41:39,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182862 to 37637. [2020-09-17 14:41:39,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37637 states. [2020-09-17 14:41:39,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37637 states to 37637 states and 200371 transitions. [2020-09-17 14:41:39,285 INFO L78 Accepts]: Start accepts. Automaton has 37637 states and 200371 transitions. Word has length 27 [2020-09-17 14:41:39,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:41:39,285 INFO L479 AbstractCegarLoop]: Abstraction has 37637 states and 200371 transitions. [2020-09-17 14:41:39,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 14:41:39,286 INFO L276 IsEmpty]: Start isEmpty. Operand 37637 states and 200371 transitions. [2020-09-17 14:41:39,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:41:39,290 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:41:39,291 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:41:39,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2020-09-17 14:41:39,491 INFO L427 AbstractCegarLoop]: === Iteration 63 === [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]=== [2020-09-17 14:41:39,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:41:39,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1424539998, now seen corresponding path program 1 times [2020-09-17 14:41:39,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:41:39,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066005424] [2020-09-17 14:41:39,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:41:39,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:41:39,581 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 14:41:39,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066005424] [2020-09-17 14:41:39,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555498798] [2020-09-17 14:41:39,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:41:39,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:41:39,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 14:41:39,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:41:39,804 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 14:41:39,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:41:39,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 14:41:39,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325816567] [2020-09-17 14:41:39,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 14:41:39,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:41:39,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 14:41:39,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-17 14:41:39,806 INFO L87 Difference]: Start difference. First operand 37637 states and 200371 transitions. Second operand 12 states. [2020-09-17 14:41:40,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:41:40,963 INFO L93 Difference]: Finished difference Result 88848 states and 432494 transitions. [2020-09-17 14:41:40,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:41:40,964 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-09-17 14:41:40,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:41:41,297 INFO L225 Difference]: With dead ends: 88848 [2020-09-17 14:41:41,298 INFO L226 Difference]: Without dead ends: 88788 [2020-09-17 14:41:41,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:41:43,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88788 states. [2020-09-17 14:41:44,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88788 to 39292. [2020-09-17 14:41:44,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39292 states. [2020-09-17 14:41:44,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39292 states to 39292 states and 209387 transitions. [2020-09-17 14:41:44,291 INFO L78 Accepts]: Start accepts. Automaton has 39292 states and 209387 transitions. Word has length 27 [2020-09-17 14:41:44,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:41:44,291 INFO L479 AbstractCegarLoop]: Abstraction has 39292 states and 209387 transitions. [2020-09-17 14:41:44,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 14:41:44,292 INFO L276 IsEmpty]: Start isEmpty. Operand 39292 states and 209387 transitions. [2020-09-17 14:41:44,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:41:44,296 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:41:44,297 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:41:44,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:41:44,497 INFO L427 AbstractCegarLoop]: === Iteration 64 === [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]=== [2020-09-17 14:41:44,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:41:44,498 INFO L82 PathProgramCache]: Analyzing trace with hash -839318940, now seen corresponding path program 1 times [2020-09-17 14:41:44,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:41:44,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86815505] [2020-09-17 14:41:44,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:41:44,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:41:44,577 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:41:44,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86815505] [2020-09-17 14:41:44,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218595231] [2020-09-17 14:41:44,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 14:41:44,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:41:44,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 14:41:44,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 14:41:44,802 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:41:44,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 14:41:44,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 14:41:44,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959104945] [2020-09-17 14:41:44,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 14:41:44,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:41:44,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 14:41:44,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-17 14:41:44,804 INFO L87 Difference]: Start difference. First operand 39292 states and 209387 transitions. Second operand 12 states. [2020-09-17 14:41:45,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:41:45,909 INFO L93 Difference]: Finished difference Result 92913 states and 454143 transitions. [2020-09-17 14:41:45,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:41:45,910 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-09-17 14:41:45,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:41:46,937 INFO L225 Difference]: With dead ends: 92913 [2020-09-17 14:41:46,938 INFO L226 Difference]: Without dead ends: 92836 [2020-09-17 14:41:46,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-09-17 14:41:47,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92836 states. [2020-09-17 14:41:49,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92836 to 40834. [2020-09-17 14:41:49,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40834 states. [2020-09-17 14:41:49,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40834 states to 40834 states and 218021 transitions. [2020-09-17 14:41:49,229 INFO L78 Accepts]: Start accepts. Automaton has 40834 states and 218021 transitions. Word has length 27 [2020-09-17 14:41:49,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:41:49,229 INFO L479 AbstractCegarLoop]: Abstraction has 40834 states and 218021 transitions. [2020-09-17 14:41:49,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 14:41:49,229 INFO L276 IsEmpty]: Start isEmpty. Operand 40834 states and 218021 transitions. [2020-09-17 14:41:49,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:41:49,235 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:41:49,235 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:41:49,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2020-09-17 14:41:49,444 INFO L427 AbstractCegarLoop]: === Iteration 65 === [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]=== [2020-09-17 14:41:49,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:41:49,445 INFO L82 PathProgramCache]: Analyzing trace with hash -947827339, now seen corresponding path program 19 times [2020-09-17 14:41:49,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:41:49,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233088461] [2020-09-17 14:41:49,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:41:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:41:49,583 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:41:49,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233088461] [2020-09-17 14:41:49,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:41:49,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-17 14:41:49,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576058166] [2020-09-17 14:41:49,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 14:41:49,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:41:49,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 14:41:49,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-17 14:41:49,586 INFO L87 Difference]: Start difference. First operand 40834 states and 218021 transitions. Second operand 11 states. [2020-09-17 14:41:54,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:41:54,061 INFO L93 Difference]: Finished difference Result 180696 states and 786321 transitions. [2020-09-17 14:41:54,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:41:54,063 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-17 14:41:54,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:41:54,661 INFO L225 Difference]: With dead ends: 180696 [2020-09-17 14:41:54,662 INFO L226 Difference]: Without dead ends: 180678 [2020-09-17 14:41:54,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1552 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-17 14:41:57,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180678 states. [2020-09-17 14:42:03,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180678 to 40673. [2020-09-17 14:42:03,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40673 states. [2020-09-17 14:42:03,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40673 states to 40673 states and 217228 transitions. [2020-09-17 14:42:03,429 INFO L78 Accepts]: Start accepts. Automaton has 40673 states and 217228 transitions. Word has length 27 [2020-09-17 14:42:03,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:42:03,429 INFO L479 AbstractCegarLoop]: Abstraction has 40673 states and 217228 transitions. [2020-09-17 14:42:03,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 14:42:03,429 INFO L276 IsEmpty]: Start isEmpty. Operand 40673 states and 217228 transitions. [2020-09-17 14:42:03,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:42:03,434 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:42:03,434 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:42:03,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2020-09-17 14:42:03,435 INFO L427 AbstractCegarLoop]: === Iteration 66 === [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]=== [2020-09-17 14:42:03,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:42:03,435 INFO L82 PathProgramCache]: Analyzing trace with hash -963570379, now seen corresponding path program 20 times [2020-09-17 14:42:03,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:42:03,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249579884] [2020-09-17 14:42:03,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:42:03,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:42:03,565 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:42:03,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249579884] [2020-09-17 14:42:03,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:42:03,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-17 14:42:03,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484280817] [2020-09-17 14:42:03,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 14:42:03,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:42:03,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 14:42:03,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-17 14:42:03,566 INFO L87 Difference]: Start difference. First operand 40673 states and 217228 transitions. Second operand 11 states. [2020-09-17 14:42:08,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:42:08,092 INFO L93 Difference]: Finished difference Result 180287 states and 784579 transitions. [2020-09-17 14:42:08,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:42:08,093 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-17 14:42:08,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:42:09,612 INFO L225 Difference]: With dead ends: 180287 [2020-09-17 14:42:09,612 INFO L226 Difference]: Without dead ends: 180263 [2020-09-17 14:42:09,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1559 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-17 14:42:11,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180263 states. [2020-09-17 14:42:14,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180263 to 40321. [2020-09-17 14:42:14,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40321 states. [2020-09-17 14:42:14,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40321 states to 40321 states and 215433 transitions. [2020-09-17 14:42:14,283 INFO L78 Accepts]: Start accepts. Automaton has 40321 states and 215433 transitions. Word has length 27 [2020-09-17 14:42:14,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:42:14,284 INFO L479 AbstractCegarLoop]: Abstraction has 40321 states and 215433 transitions. [2020-09-17 14:42:14,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 14:42:14,284 INFO L276 IsEmpty]: Start isEmpty. Operand 40321 states and 215433 transitions. [2020-09-17 14:42:14,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:42:14,289 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:42:14,290 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:42:14,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2020-09-17 14:42:14,290 INFO L427 AbstractCegarLoop]: === Iteration 67 === [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]=== [2020-09-17 14:42:14,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:42:14,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1412510069, now seen corresponding path program 21 times [2020-09-17 14:42:14,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:42:14,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375801330] [2020-09-17 14:42:14,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:42:14,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:42:14,422 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:42:14,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375801330] [2020-09-17 14:42:14,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:42:14,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-17 14:42:14,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49384552] [2020-09-17 14:42:14,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 14:42:14,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:42:14,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 14:42:14,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-17 14:42:14,425 INFO L87 Difference]: Start difference. First operand 40321 states and 215433 transitions. Second operand 11 states. [2020-09-17 14:42:19,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:42:19,491 INFO L93 Difference]: Finished difference Result 179815 states and 782456 transitions. [2020-09-17 14:42:19,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:42:19,493 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-17 14:42:19,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:42:20,103 INFO L225 Difference]: With dead ends: 179815 [2020-09-17 14:42:20,104 INFO L226 Difference]: Without dead ends: 179797 [2020-09-17 14:42:20,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1545 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-17 14:42:21,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179797 states. [2020-09-17 14:42:27,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179797 to 40030. [2020-09-17 14:42:27,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40030 states. [2020-09-17 14:42:27,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40030 states to 40030 states and 214096 transitions. [2020-09-17 14:42:27,974 INFO L78 Accepts]: Start accepts. Automaton has 40030 states and 214096 transitions. Word has length 27 [2020-09-17 14:42:27,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:42:27,974 INFO L479 AbstractCegarLoop]: Abstraction has 40030 states and 214096 transitions. [2020-09-17 14:42:27,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 14:42:27,975 INFO L276 IsEmpty]: Start isEmpty. Operand 40030 states and 214096 transitions. [2020-09-17 14:42:27,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:42:27,980 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:42:27,980 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:42:27,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2020-09-17 14:42:27,980 INFO L427 AbstractCegarLoop]: === Iteration 68 === [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]=== [2020-09-17 14:42:27,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:42:27,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1385815349, now seen corresponding path program 22 times [2020-09-17 14:42:27,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:42:27,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733508384] [2020-09-17 14:42:27,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:42:27,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:42:28,118 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:42:28,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733508384] [2020-09-17 14:42:28,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:42:28,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-17 14:42:28,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149985663] [2020-09-17 14:42:28,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 14:42:28,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:42:28,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 14:42:28,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-17 14:42:28,119 INFO L87 Difference]: Start difference. First operand 40030 states and 214096 transitions. Second operand 11 states. [2020-09-17 14:42:33,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:42:33,078 INFO L93 Difference]: Finished difference Result 179585 states and 781438 transitions. [2020-09-17 14:42:33,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:42:33,079 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-17 14:42:33,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:42:33,678 INFO L225 Difference]: With dead ends: 179585 [2020-09-17 14:42:33,678 INFO L226 Difference]: Without dead ends: 179561 [2020-09-17 14:42:33,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1535 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-17 14:42:36,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179561 states. [2020-09-17 14:42:38,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179561 to 39678. [2020-09-17 14:42:38,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39678 states. [2020-09-17 14:42:39,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39678 states to 39678 states and 212301 transitions. [2020-09-17 14:42:39,017 INFO L78 Accepts]: Start accepts. Automaton has 39678 states and 212301 transitions. Word has length 27 [2020-09-17 14:42:39,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:42:39,017 INFO L479 AbstractCegarLoop]: Abstraction has 39678 states and 212301 transitions. [2020-09-17 14:42:39,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 14:42:39,017 INFO L276 IsEmpty]: Start isEmpty. Operand 39678 states and 212301 transitions. [2020-09-17 14:42:39,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:42:39,023 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:42:39,023 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:42:39,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2020-09-17 14:42:39,023 INFO L427 AbstractCegarLoop]: === Iteration 69 === [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]=== [2020-09-17 14:42:39,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:42:39,023 INFO L82 PathProgramCache]: Analyzing trace with hash -847392523, now seen corresponding path program 23 times [2020-09-17 14:42:39,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:42:39,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783064606] [2020-09-17 14:42:39,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:42:39,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:42:39,168 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:42:39,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783064606] [2020-09-17 14:42:39,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:42:39,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-17 14:42:39,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117797846] [2020-09-17 14:42:39,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 14:42:39,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:42:39,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 14:42:39,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-17 14:42:39,170 INFO L87 Difference]: Start difference. First operand 39678 states and 212301 transitions. Second operand 11 states. [2020-09-17 14:42:43,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:42:43,771 INFO L93 Difference]: Finished difference Result 179113 states and 779315 transitions. [2020-09-17 14:42:43,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:42:43,773 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-17 14:42:43,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:42:45,533 INFO L225 Difference]: With dead ends: 179113 [2020-09-17 14:42:45,534 INFO L226 Difference]: Without dead ends: 179095 [2020-09-17 14:42:45,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1556 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-17 14:42:47,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179095 states. [2020-09-17 14:42:52,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179095 to 39387. [2020-09-17 14:42:52,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39387 states. [2020-09-17 14:42:53,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39387 states to 39387 states and 210964 transitions. [2020-09-17 14:42:53,116 INFO L78 Accepts]: Start accepts. Automaton has 39387 states and 210964 transitions. Word has length 27 [2020-09-17 14:42:53,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:42:53,116 INFO L479 AbstractCegarLoop]: Abstraction has 39387 states and 210964 transitions. [2020-09-17 14:42:53,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 14:42:53,116 INFO L276 IsEmpty]: Start isEmpty. Operand 39387 states and 210964 transitions. [2020-09-17 14:42:53,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:42:53,122 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:42:53,122 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:42:53,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2020-09-17 14:42:53,122 INFO L427 AbstractCegarLoop]: === Iteration 70 === [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]=== [2020-09-17 14:42:53,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:42:53,123 INFO L82 PathProgramCache]: Analyzing trace with hash -858344203, now seen corresponding path program 24 times [2020-09-17 14:42:53,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:42:53,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636339881] [2020-09-17 14:42:53,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:42:53,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:42:53,283 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 14:42:53,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636339881] [2020-09-17 14:42:53,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:42:53,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-17 14:42:53,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376871840] [2020-09-17 14:42:53,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 14:42:53,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:42:53,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 14:42:53,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-17 14:42:53,287 INFO L87 Difference]: Start difference. First operand 39387 states and 210964 transitions. Second operand 11 states. [2020-09-17 14:42:58,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:42:58,875 INFO L93 Difference]: Finished difference Result 178704 states and 777573 transitions. [2020-09-17 14:42:58,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 14:42:58,876 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-17 14:42:58,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:42:59,441 INFO L225 Difference]: With dead ends: 178704 [2020-09-17 14:42:59,442 INFO L226 Difference]: Without dead ends: 178675 [2020-09-17 14:42:59,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1543 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-17 14:43:01,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178675 states. [2020-09-17 14:43:03,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178675 to 38805. [2020-09-17 14:43:03,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38805 states. [2020-09-17 14:43:04,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38805 states to 38805 states and 208284 transitions. [2020-09-17 14:43:04,082 INFO L78 Accepts]: Start accepts. Automaton has 38805 states and 208284 transitions. Word has length 27 [2020-09-17 14:43:04,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:43:04,082 INFO L479 AbstractCegarLoop]: Abstraction has 38805 states and 208284 transitions. [2020-09-17 14:43:04,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 14:43:04,083 INFO L276 IsEmpty]: Start isEmpty. Operand 38805 states and 208284 transitions. [2020-09-17 14:43:04,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:43:04,088 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:43:04,088 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:43:04,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2020-09-17 14:43:04,088 INFO L427 AbstractCegarLoop]: === Iteration 71 === [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]=== [2020-09-17 14:43:04,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:43:04,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1294328210, now seen corresponding path program 2 times [2020-09-17 14:43:04,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:43:04,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808175392] [2020-09-17 14:43:04,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:43:04,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:43:04,169 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-17 14:43:04,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808175392] [2020-09-17 14:43:04,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:43:04,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 14:43:04,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103293032] [2020-09-17 14:43:04,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 14:43:04,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:43:04,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 14:43:04,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:43:04,171 INFO L87 Difference]: Start difference. First operand 38805 states and 208284 transitions. Second operand 7 states. [2020-09-17 14:43:06,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:43:06,183 INFO L93 Difference]: Finished difference Result 90966 states and 445145 transitions. [2020-09-17 14:43:06,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:43:06,185 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-17 14:43:06,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:43:06,528 INFO L225 Difference]: With dead ends: 90966 [2020-09-17 14:43:06,528 INFO L226 Difference]: Without dead ends: 90889 [2020-09-17 14:43:06,528 INFO L675 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 [2020-09-17 14:43:07,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90889 states. [2020-09-17 14:43:08,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90889 to 40453. [2020-09-17 14:43:08,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40453 states. [2020-09-17 14:43:09,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40453 states to 40453 states and 217061 transitions. [2020-09-17 14:43:09,782 INFO L78 Accepts]: Start accepts. Automaton has 40453 states and 217061 transitions. Word has length 27 [2020-09-17 14:43:09,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:43:09,783 INFO L479 AbstractCegarLoop]: Abstraction has 40453 states and 217061 transitions. [2020-09-17 14:43:09,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 14:43:09,783 INFO L276 IsEmpty]: Start isEmpty. Operand 40453 states and 217061 transitions. [2020-09-17 14:43:09,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:43:09,789 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:43:09,789 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:43:09,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2020-09-17 14:43:09,789 INFO L427 AbstractCegarLoop]: === Iteration 72 === [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]=== [2020-09-17 14:43:09,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:43:09,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1294339618, now seen corresponding path program 2 times [2020-09-17 14:43:09,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:43:09,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806943159] [2020-09-17 14:43:09,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:43:09,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:43:09,890 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-17 14:43:09,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806943159] [2020-09-17 14:43:09,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:43:09,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 14:43:09,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18950458] [2020-09-17 14:43:09,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 14:43:09,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:43:09,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 14:43:09,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:43:09,891 INFO L87 Difference]: Start difference. First operand 40453 states and 217061 transitions. Second operand 7 states. [2020-09-17 14:43:10,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:43:10,928 INFO L93 Difference]: Finished difference Result 91560 states and 447373 transitions. [2020-09-17 14:43:10,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:43:10,930 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-17 14:43:10,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:43:11,244 INFO L225 Difference]: With dead ends: 91560 [2020-09-17 14:43:11,245 INFO L226 Difference]: Without dead ends: 91483 [2020-09-17 14:43:11,245 INFO L675 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 [2020-09-17 14:43:12,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91483 states. [2020-09-17 14:43:16,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91483 to 41467. [2020-09-17 14:43:16,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41467 states. [2020-09-17 14:43:16,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41467 states to 41467 states and 222391 transitions. [2020-09-17 14:43:16,517 INFO L78 Accepts]: Start accepts. Automaton has 41467 states and 222391 transitions. Word has length 27 [2020-09-17 14:43:16,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:43:16,517 INFO L479 AbstractCegarLoop]: Abstraction has 41467 states and 222391 transitions. [2020-09-17 14:43:16,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 14:43:16,518 INFO L276 IsEmpty]: Start isEmpty. Operand 41467 states and 222391 transitions. [2020-09-17 14:43:16,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:43:16,523 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:43:16,523 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:43:16,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2020-09-17 14:43:16,523 INFO L427 AbstractCegarLoop]: === Iteration 73 === [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]=== [2020-09-17 14:43:16,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:43:16,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1294356017, now seen corresponding path program 2 times [2020-09-17 14:43:16,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:43:16,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121656280] [2020-09-17 14:43:16,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:43:16,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:43:16,601 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-17 14:43:16,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121656280] [2020-09-17 14:43:16,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:43:16,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 14:43:16,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025554831] [2020-09-17 14:43:16,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 14:43:16,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:43:16,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 14:43:16,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:43:16,603 INFO L87 Difference]: Start difference. First operand 41467 states and 222391 transitions. Second operand 7 states. [2020-09-17 14:43:17,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:43:17,634 INFO L93 Difference]: Finished difference Result 92674 states and 452263 transitions. [2020-09-17 14:43:17,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 14:43:17,635 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-17 14:43:17,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:43:17,962 INFO L225 Difference]: With dead ends: 92674 [2020-09-17 14:43:17,962 INFO L226 Difference]: Without dead ends: 92597 [2020-09-17 14:43:17,962 INFO L675 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 [2020-09-17 14:43:19,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92597 states. [2020-09-17 14:43:20,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92597 to 42564. [2020-09-17 14:43:20,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42564 states. [2020-09-17 14:43:20,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42564 states to 42564 states and 227862 transitions. [2020-09-17 14:43:20,888 INFO L78 Accepts]: Start accepts. Automaton has 42564 states and 227862 transitions. Word has length 27 [2020-09-17 14:43:20,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:43:20,888 INFO L479 AbstractCegarLoop]: Abstraction has 42564 states and 227862 transitions. [2020-09-17 14:43:20,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 14:43:20,888 INFO L276 IsEmpty]: Start isEmpty. Operand 42564 states and 227862 transitions. [2020-09-17 14:43:20,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 14:43:20,894 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:43:20,894 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:43:20,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2020-09-17 14:43:20,894 INFO L427 AbstractCegarLoop]: === Iteration 74 === [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]=== [2020-09-17 14:43:20,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:43:20,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1294335650, now seen corresponding path program 2 times [2020-09-17 14:43:20,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:43:20,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915660819] [2020-09-17 14:43:20,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:43:20,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:43:20,978 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-17 14:43:20,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915660819] [2020-09-17 14:43:20,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:43:20,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 14:43:20,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700938204] [2020-09-17 14:43:20,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 14:43:20,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:43:20,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 14:43:20,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:43:20,980 INFO L87 Difference]: Start difference. First operand 42564 states and 227862 transitions. Second operand 7 states.