/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-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-15 13:17:20,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-15 13:17:20,045 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-15 13:17:20,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-15 13:17:20,092 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-15 13:17:20,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-15 13:17:20,104 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-15 13:17:20,109 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-15 13:17:20,112 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-15 13:17:20,116 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-15 13:17:20,117 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-15 13:17:20,118 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-15 13:17:20,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-15 13:17:20,122 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-15 13:17:20,124 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-15 13:17:20,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-15 13:17:20,128 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-15 13:17:20,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-15 13:17:20,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-15 13:17:20,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-15 13:17:20,143 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-15 13:17:20,145 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-15 13:17:20,146 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-15 13:17:20,147 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-15 13:17:20,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-15 13:17:20,164 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-15 13:17:20,164 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-15 13:17:20,165 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-15 13:17:20,166 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-15 13:17:20,167 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-15 13:17:20,167 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-15 13:17:20,168 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-15 13:17:20,168 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-15 13:17:20,168 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-15 13:17:20,169 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-15 13:17:20,171 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-15 13:17:20,172 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-09-15 13:17:20,217 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-15 13:17:20,217 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-15 13:17:20,220 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-15 13:17:20,220 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-15 13:17:20,220 INFO L138 SettingsManager]: * Use SBE=true [2020-09-15 13:17:20,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-15 13:17:20,221 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-15 13:17:20,221 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-15 13:17:20,221 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-15 13:17:20,221 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-15 13:17:20,223 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-15 13:17:20,223 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-15 13:17:20,223 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-15 13:17:20,224 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-15 13:17:20,224 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-15 13:17:20,224 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-15 13:17:20,224 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-15 13:17:20,224 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-15 13:17:20,225 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-15 13:17:20,225 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-15 13:17:20,225 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-15 13:17:20,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-15 13:17:20,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-15 13:17:20,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-15 13:17:20,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-15 13:17:20,226 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-15 13:17:20,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-15 13:17:20,226 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-15 13:17:20,227 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-15 13:17:20,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-15 13:17:20,783 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-15 13:17:20,788 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-15 13:17:20,790 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-15 13:17:20,791 INFO L275 PluginConnector]: CDTParser initialized [2020-09-15 13:17:20,792 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-2.i [2020-09-15 13:17:20,894 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36925c320/6fc773ba86f840129c3852b8bdca144c/FLAG4516309ab [2020-09-15 13:17:21,588 INFO L306 CDTParser]: Found 1 translation units. [2020-09-15 13:17:21,589 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-2.i [2020-09-15 13:17:21,606 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36925c320/6fc773ba86f840129c3852b8bdca144c/FLAG4516309ab [2020-09-15 13:17:21,838 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36925c320/6fc773ba86f840129c3852b8bdca144c [2020-09-15 13:17:21,854 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-15 13:17:21,860 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-15 13:17:21,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-15 13:17:21,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-15 13:17:21,866 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-15 13:17:21,868 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 01:17:21" (1/1) ... [2020-09-15 13:17:21,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72014375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:17:21, skipping insertion in model container [2020-09-15 13:17:21,873 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 01:17:21" (1/1) ... [2020-09-15 13:17:21,883 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-15 13:17:21,962 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-15 13:17:22,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 13:17:22,686 INFO L203 MainTranslator]: Completed pre-run [2020-09-15 13:17:22,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 13:17:22,844 INFO L208 MainTranslator]: Completed translation [2020-09-15 13:17:22,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:17:22 WrapperNode [2020-09-15 13:17:22,845 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-15 13:17:22,846 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-15 13:17:22,846 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-15 13:17:22,847 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-15 13:17:22,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:17:22" (1/1) ... [2020-09-15 13:17:22,880 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:17:22" (1/1) ... [2020-09-15 13:17:22,908 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-15 13:17:22,909 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-15 13:17:22,909 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-15 13:17:22,909 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-15 13:17:22,922 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:17:22" (1/1) ... [2020-09-15 13:17:22,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:17:22" (1/1) ... [2020-09-15 13:17:22,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:17:22" (1/1) ... [2020-09-15 13:17:22,926 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:17:22" (1/1) ... [2020-09-15 13:17:22,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:17:22" (1/1) ... [2020-09-15 13:17:22,940 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:17:22" (1/1) ... [2020-09-15 13:17:22,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:17:22" (1/1) ... [2020-09-15 13:17:22,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-15 13:17:22,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-15 13:17:22,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-15 13:17:22,947 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-15 13:17:22,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:17:22" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-15 13:17:23,045 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-09-15 13:17:23,045 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-09-15 13:17:23,046 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-09-15 13:17:23,046 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-09-15 13:17:23,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-15 13:17:23,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-15 13:17:23,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-15 13:17:23,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-15 13:17:23,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-15 13:17:23,049 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-15 13:17:23,450 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-15 13:17:23,451 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-09-15 13:17:23,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 01:17:23 BoogieIcfgContainer [2020-09-15 13:17:23,455 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-15 13:17:23,457 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-15 13:17:23,457 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-15 13:17:23,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-15 13:17:23,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 01:17:21" (1/3) ... [2020-09-15 13:17:23,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@130fa15e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 01:17:23, skipping insertion in model container [2020-09-15 13:17:23,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:17:22" (2/3) ... [2020-09-15 13:17:23,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@130fa15e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 01:17:23, skipping insertion in model container [2020-09-15 13:17:23,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 01:17:23" (3/3) ... [2020-09-15 13:17:23,467 INFO L109 eAbstractionObserver]: Analyzing ICFG nondet-loop-bound-2.i [2020-09-15 13:17:23,481 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-15 13:17:23,481 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-15 13:17:23,493 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-15 13:17:23,495 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-15 13:17:23,527 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:23,528 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:23,528 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:23,528 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:23,529 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:23,529 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:23,529 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:23,530 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:23,531 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:23,531 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:23,531 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:23,531 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:23,532 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:23,532 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:23,532 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:23,533 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:23,533 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:23,538 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:23,538 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:23,539 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:23,539 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:23,539 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:23,546 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:23,547 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:23,547 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:23,547 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:23,547 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:23,548 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:23,577 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-15 13:17:23,602 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 13:17:23,603 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 13:17:23,603 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-15 13:17:23,603 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-15 13:17:23,603 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 13:17:23,604 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 13:17:23,604 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 13:17:23,604 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 13:17:23,623 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 58 transitions, 126 flow [2020-09-15 13:17:23,626 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 58 transitions, 126 flow [2020-09-15 13:17:23,677 INFO L129 PetriNetUnfolder]: 4/68 cut-off events. [2020-09-15 13:17:23,677 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-15 13:17:23,685 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. [2020-09-15 13:17:23,688 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 58 transitions, 126 flow [2020-09-15 13:17:23,712 INFO L129 PetriNetUnfolder]: 4/68 cut-off events. [2020-09-15 13:17:23,713 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-15 13:17:23,714 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. [2020-09-15 13:17:23,717 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 592 [2020-09-15 13:17:23,718 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-15 13:17:25,274 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-09-15 13:17:25,556 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-09-15 13:17:25,682 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-09-15 13:17:25,862 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2020-09-15 13:17:25,944 INFO L206 etLargeBlockEncoding]: Checked pairs total: 486 [2020-09-15 13:17:25,944 INFO L214 etLargeBlockEncoding]: Total number of compositions: 51 [2020-09-15 13:17:25,949 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 12 transitions, 34 flow [2020-09-15 13:17:25,965 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-09-15 13:17:25,968 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-15 13:17:25,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-15 13:17:25,977 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:17:25,978 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-15 13:17:25,978 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 13:17:25,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:17:25,986 INFO L82 PathProgramCache]: Analyzing trace with hash 229686, now seen corresponding path program 1 times [2020-09-15 13:17:26,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:17:26,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484778277] [2020-09-15 13:17:26,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:17:26,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:17:26,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 13:17:26,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484778277] [2020-09-15 13:17:26,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:17:26,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 13:17:26,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229824576] [2020-09-15 13:17:26,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 13:17:26,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:17:26,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 13:17:26,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 13:17:26,296 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-09-15 13:17:26,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:17:26,340 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2020-09-15 13:17:26,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 13:17:26,342 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-15 13:17:26,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:17:26,358 INFO L225 Difference]: With dead ends: 35 [2020-09-15 13:17:26,358 INFO L226 Difference]: Without dead ends: 31 [2020-09-15 13:17:26,360 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 [2020-09-15 13:17:26,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-15 13:17:26,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-15 13:17:26,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-15 13:17:26,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 51 transitions. [2020-09-15 13:17:26,413 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 51 transitions. Word has length 3 [2020-09-15 13:17:26,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:17:26,413 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 51 transitions. [2020-09-15 13:17:26,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 13:17:26,414 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2020-09-15 13:17:26,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-09-15 13:17:26,415 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:17:26,415 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:17:26,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-15 13:17:26,415 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 13:17:26,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:17:26,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1647647331, now seen corresponding path program 1 times [2020-09-15 13:17:26,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:17:26,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910359790] [2020-09-15 13:17:26,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:17:26,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:17:26,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 13:17:26,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910359790] [2020-09-15 13:17:26,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:17:26,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 13:17:26,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938729749] [2020-09-15 13:17:26,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 13:17:26,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:17:26,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 13:17:26,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-15 13:17:26,528 INFO L87 Difference]: Start difference. First operand 31 states and 51 transitions. Second operand 4 states. [2020-09-15 13:17:26,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:17:26,566 INFO L93 Difference]: Finished difference Result 26 states and 42 transitions. [2020-09-15 13:17:26,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-15 13:17:26,566 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-09-15 13:17:26,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:17:26,567 INFO L225 Difference]: With dead ends: 26 [2020-09-15 13:17:26,567 INFO L226 Difference]: Without dead ends: 24 [2020-09-15 13:17:26,569 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 [2020-09-15 13:17:26,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-09-15 13:17:26,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-09-15 13:17:26,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-09-15 13:17:26,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 39 transitions. [2020-09-15 13:17:26,574 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 39 transitions. Word has length 7 [2020-09-15 13:17:26,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:17:26,574 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 39 transitions. [2020-09-15 13:17:26,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 13:17:26,574 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 39 transitions. [2020-09-15 13:17:26,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-15 13:17:26,575 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:17:26,575 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-09-15 13:17:26,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-15 13:17:26,576 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 13:17:26,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:17:26,576 INFO L82 PathProgramCache]: Analyzing trace with hash -462538936, now seen corresponding path program 1 times [2020-09-15 13:17:26,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:17:26,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540010772] [2020-09-15 13:17:26,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:17:26,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 13:17:26,608 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 13:17:26,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 13:17:26,630 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 13:17:26,663 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-15 13:17:26,664 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-15 13:17:26,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-15 13:17:26,665 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-15 13:17:26,666 WARN L363 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-15 13:17:26,666 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-09-15 13:17:26,677 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,677 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,678 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,678 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,678 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,679 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,679 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,679 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,679 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,679 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,680 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,680 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,680 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,680 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,681 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,682 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,682 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,682 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,689 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,689 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,690 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,691 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,691 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,691 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,692 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,692 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,692 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,692 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,692 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,693 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,693 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,693 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,693 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,693 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,695 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,695 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,695 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,695 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,695 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,699 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,700 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,700 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,700 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,700 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,708 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,708 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,709 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,709 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,709 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,709 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,711 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,711 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,711 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,711 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,712 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,712 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:26,717 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-15 13:17:26,717 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 13:17:26,717 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 13:17:26,718 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-15 13:17:26,718 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-15 13:17:26,718 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 13:17:26,718 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 13:17:26,718 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 13:17:26,718 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 13:17:26,724 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 74 transitions, 172 flow [2020-09-15 13:17:26,724 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 80 places, 74 transitions, 172 flow [2020-09-15 13:17:26,765 INFO L129 PetriNetUnfolder]: 5/89 cut-off events. [2020-09-15 13:17:26,765 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-09-15 13:17:26,766 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. [2020-09-15 13:17:26,769 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 80 places, 74 transitions, 172 flow [2020-09-15 13:17:26,787 INFO L129 PetriNetUnfolder]: 5/89 cut-off events. [2020-09-15 13:17:26,787 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-09-15 13:17:26,788 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. [2020-09-15 13:17:26,790 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 920 [2020-09-15 13:17:26,790 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-15 13:17:28,261 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2020-09-15 13:17:28,507 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-09-15 13:17:28,684 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-09-15 13:17:28,693 INFO L206 etLargeBlockEncoding]: Checked pairs total: 942 [2020-09-15 13:17:28,694 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2020-09-15 13:17:28,694 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 66 flow [2020-09-15 13:17:28,707 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 224 states. [2020-09-15 13:17:28,708 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states. [2020-09-15 13:17:28,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-15 13:17:28,709 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:17:28,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-15 13:17:28,709 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 13:17:28,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:17:28,710 INFO L82 PathProgramCache]: Analyzing trace with hash 384194, now seen corresponding path program 1 times [2020-09-15 13:17:28,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:17:28,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396814321] [2020-09-15 13:17:28,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:17:28,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:17:28,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 13:17:28,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396814321] [2020-09-15 13:17:28,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:17:28,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 13:17:28,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392913333] [2020-09-15 13:17:28,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 13:17:28,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:17:28,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 13:17:28,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 13:17:28,789 INFO L87 Difference]: Start difference. First operand 224 states. Second operand 3 states. [2020-09-15 13:17:28,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:17:28,836 INFO L93 Difference]: Finished difference Result 185 states and 459 transitions. [2020-09-15 13:17:28,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 13:17:28,837 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-15 13:17:28,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:17:28,843 INFO L225 Difference]: With dead ends: 185 [2020-09-15 13:17:28,843 INFO L226 Difference]: Without dead ends: 171 [2020-09-15 13:17:28,844 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 [2020-09-15 13:17:28,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-09-15 13:17:28,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-09-15 13:17:28,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-09-15 13:17:28,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 418 transitions. [2020-09-15 13:17:28,873 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 418 transitions. Word has length 3 [2020-09-15 13:17:28,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:17:28,873 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 418 transitions. [2020-09-15 13:17:28,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 13:17:28,873 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 418 transitions. [2020-09-15 13:17:28,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-15 13:17:28,874 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:17:28,874 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:17:28,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-15 13:17:28,875 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 13:17:28,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:17:28,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1694917346, now seen corresponding path program 1 times [2020-09-15 13:17:28,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:17:28,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15113923] [2020-09-15 13:17:28,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:17:28,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:17:28,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 13:17:28,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15113923] [2020-09-15 13:17:28,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:17:28,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 13:17:28,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141048769] [2020-09-15 13:17:28,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 13:17:28,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:17:28,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 13:17:28,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 13:17:28,970 INFO L87 Difference]: Start difference. First operand 171 states and 418 transitions. Second operand 5 states. [2020-09-15 13:17:29,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:17:29,105 INFO L93 Difference]: Finished difference Result 205 states and 460 transitions. [2020-09-15 13:17:29,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 13:17:29,105 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-15 13:17:29,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:17:29,110 INFO L225 Difference]: With dead ends: 205 [2020-09-15 13:17:29,110 INFO L226 Difference]: Without dead ends: 201 [2020-09-15 13:17:29,111 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 [2020-09-15 13:17:29,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-09-15 13:17:29,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 162. [2020-09-15 13:17:29,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-15 13:17:29,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 399 transitions. [2020-09-15 13:17:29,156 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 399 transitions. Word has length 9 [2020-09-15 13:17:29,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:17:29,157 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 399 transitions. [2020-09-15 13:17:29,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 13:17:29,157 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 399 transitions. [2020-09-15 13:17:29,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-15 13:17:29,158 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:17:29,158 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:17:29,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-15 13:17:29,159 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 13:17:29,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:17:29,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1027741454, now seen corresponding path program 1 times [2020-09-15 13:17:29,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:17:29,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090547086] [2020-09-15 13:17:29,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:17:29,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:17:29,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 13:17:29,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090547086] [2020-09-15 13:17:29,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:17:29,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 13:17:29,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89977907] [2020-09-15 13:17:29,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 13:17:29,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:17:29,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 13:17:29,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 13:17:29,298 INFO L87 Difference]: Start difference. First operand 162 states and 399 transitions. Second operand 5 states. [2020-09-15 13:17:29,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:17:29,413 INFO L93 Difference]: Finished difference Result 189 states and 423 transitions. [2020-09-15 13:17:29,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 13:17:29,415 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-15 13:17:29,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:17:29,417 INFO L225 Difference]: With dead ends: 189 [2020-09-15 13:17:29,418 INFO L226 Difference]: Without dead ends: 185 [2020-09-15 13:17:29,419 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 [2020-09-15 13:17:29,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-09-15 13:17:29,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 153. [2020-09-15 13:17:29,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-09-15 13:17:29,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 367 transitions. [2020-09-15 13:17:29,431 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 367 transitions. Word has length 13 [2020-09-15 13:17:29,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:17:29,433 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 367 transitions. [2020-09-15 13:17:29,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 13:17:29,433 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 367 transitions. [2020-09-15 13:17:29,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-15 13:17:29,435 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:17:29,435 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:17:29,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-15 13:17:29,435 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 13:17:29,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:17:29,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1792799235, now seen corresponding path program 1 times [2020-09-15 13:17:29,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:17:29,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147930455] [2020-09-15 13:17:29,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:17:29,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 13:17:29,456 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 13:17:29,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 13:17:29,471 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 13:17:29,488 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-15 13:17:29,492 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-15 13:17:29,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-15 13:17:29,493 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-15 13:17:29,493 WARN L363 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-15 13:17:29,498 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-09-15 13:17:29,515 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,516 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,516 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,516 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,516 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,516 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,516 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,520 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,520 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,520 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,520 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,520 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,521 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,521 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,521 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,521 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,521 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,521 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,521 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,521 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,522 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,522 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,522 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,522 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,522 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,523 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,524 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,524 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,524 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,525 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,525 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,525 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,525 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,526 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,526 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,526 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,526 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,526 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,526 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,526 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,526 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,527 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,527 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,527 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,527 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,527 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,527 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,527 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,528 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,528 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,529 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,529 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,530 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,530 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,530 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,530 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,532 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,532 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,532 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,532 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,532 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,534 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,534 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,534 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,535 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,535 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,537 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,537 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,537 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,537 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,537 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,538 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,539 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,539 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,539 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,540 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,540 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,540 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,542 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,542 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,542 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,542 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,542 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,543 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:29,546 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-09-15 13:17:29,546 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 13:17:29,546 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 13:17:29,546 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-15 13:17:29,546 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-15 13:17:29,546 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 13:17:29,547 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 13:17:29,547 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 13:17:29,547 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 13:17:29,549 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 90 transitions, 222 flow [2020-09-15 13:17:29,550 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 90 transitions, 222 flow [2020-09-15 13:17:29,570 INFO L129 PetriNetUnfolder]: 6/110 cut-off events. [2020-09-15 13:17:29,571 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-09-15 13:17:29,572 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. [2020-09-15 13:17:29,575 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 90 transitions, 222 flow [2020-09-15 13:17:29,594 INFO L129 PetriNetUnfolder]: 6/110 cut-off events. [2020-09-15 13:17:29,595 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-09-15 13:17:29,596 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. [2020-09-15 13:17:29,599 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1308 [2020-09-15 13:17:29,599 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-15 13:17:31,288 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-09-15 13:17:31,609 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-09-15 13:17:31,790 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-09-15 13:17:31,798 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1426 [2020-09-15 13:17:31,798 INFO L214 etLargeBlockEncoding]: Total number of compositions: 74 [2020-09-15 13:17:31,799 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 27 transitions, 96 flow [2020-09-15 13:17:31,828 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 683 states. [2020-09-15 13:17:31,828 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states. [2020-09-15 13:17:31,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-15 13:17:31,829 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:17:31,829 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-15 13:17:31,829 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 13:17:31,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:17:31,830 INFO L82 PathProgramCache]: Analyzing trace with hash 567457, now seen corresponding path program 1 times [2020-09-15 13:17:31,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:17:31,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693594870] [2020-09-15 13:17:31,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:17:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:17:31,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 13:17:31,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693594870] [2020-09-15 13:17:31,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:17:31,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 13:17:31,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73383751] [2020-09-15 13:17:31,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 13:17:31,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:17:31,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 13:17:31,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 13:17:31,878 INFO L87 Difference]: Start difference. First operand 683 states. Second operand 3 states. [2020-09-15 13:17:31,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:17:31,930 INFO L93 Difference]: Finished difference Result 600 states and 1886 transitions. [2020-09-15 13:17:31,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 13:17:31,931 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-15 13:17:31,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:17:31,940 INFO L225 Difference]: With dead ends: 600 [2020-09-15 13:17:31,940 INFO L226 Difference]: Without dead ends: 559 [2020-09-15 13:17:31,941 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 [2020-09-15 13:17:31,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-09-15 13:17:31,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2020-09-15 13:17:31,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-09-15 13:17:32,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1737 transitions. [2020-09-15 13:17:32,001 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1737 transitions. Word has length 3 [2020-09-15 13:17:32,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:17:32,001 INFO L479 AbstractCegarLoop]: Abstraction has 559 states and 1737 transitions. [2020-09-15 13:17:32,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 13:17:32,001 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1737 transitions. [2020-09-15 13:17:32,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-15 13:17:32,002 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:17:32,002 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:17:32,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-15 13:17:32,003 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 13:17:32,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:17:32,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1052273544, now seen corresponding path program 1 times [2020-09-15 13:17:32,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:17:32,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398441320] [2020-09-15 13:17:32,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:17:32,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:17:32,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 13:17:32,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398441320] [2020-09-15 13:17:32,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:17:32,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 13:17:32,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122068593] [2020-09-15 13:17:32,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 13:17:32,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:17:32,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 13:17:32,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 13:17:32,067 INFO L87 Difference]: Start difference. First operand 559 states and 1737 transitions. Second operand 5 states. [2020-09-15 13:17:32,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:17:32,219 INFO L93 Difference]: Finished difference Result 817 states and 2317 transitions. [2020-09-15 13:17:32,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 13:17:32,220 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-15 13:17:32,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:17:32,226 INFO L225 Difference]: With dead ends: 817 [2020-09-15 13:17:32,227 INFO L226 Difference]: Without dead ends: 812 [2020-09-15 13:17:32,227 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 [2020-09-15 13:17:32,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-09-15 13:17:32,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 585. [2020-09-15 13:17:32,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-09-15 13:17:32,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1832 transitions. [2020-09-15 13:17:32,258 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1832 transitions. Word has length 9 [2020-09-15 13:17:32,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:17:32,258 INFO L479 AbstractCegarLoop]: Abstraction has 585 states and 1832 transitions. [2020-09-15 13:17:32,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 13:17:32,259 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1832 transitions. [2020-09-15 13:17:32,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-15 13:17:32,260 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:17:32,260 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:17:32,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-15 13:17:32,261 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 13:17:32,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:17:32,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1096280394, now seen corresponding path program 1 times [2020-09-15 13:17:32,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:17:32,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547345067] [2020-09-15 13:17:32,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:17:32,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:17:32,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 13:17:32,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547345067] [2020-09-15 13:17:32,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:17:32,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 13:17:32,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675703148] [2020-09-15 13:17:32,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 13:17:32,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:17:32,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 13:17:32,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 13:17:32,343 INFO L87 Difference]: Start difference. First operand 585 states and 1832 transitions. Second operand 5 states. [2020-09-15 13:17:32,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:17:32,467 INFO L93 Difference]: Finished difference Result 843 states and 2406 transitions. [2020-09-15 13:17:32,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 13:17:32,468 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-15 13:17:32,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:17:32,475 INFO L225 Difference]: With dead ends: 843 [2020-09-15 13:17:32,476 INFO L226 Difference]: Without dead ends: 836 [2020-09-15 13:17:32,476 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 [2020-09-15 13:17:32,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-09-15 13:17:32,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 611. [2020-09-15 13:17:32,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-09-15 13:17:32,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1906 transitions. [2020-09-15 13:17:32,511 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1906 transitions. Word has length 13 [2020-09-15 13:17:32,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:17:32,512 INFO L479 AbstractCegarLoop]: Abstraction has 611 states and 1906 transitions. [2020-09-15 13:17:32,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 13:17:32,512 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1906 transitions. [2020-09-15 13:17:32,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 13:17:32,513 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:17:32,514 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:17:32,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-15 13:17:32,514 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 13:17:32,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:17:32,515 INFO L82 PathProgramCache]: Analyzing trace with hash 2044985054, now seen corresponding path program 1 times [2020-09-15 13:17:32,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:17:32,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622569974] [2020-09-15 13:17:32,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:17:32,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:17:32,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 13:17:32,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622569974] [2020-09-15 13:17:32,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734471017] [2020-09-15 13:17:32,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:17:32,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:17:32,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 13:17:32,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:17:32,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 13:17:32,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:17:32,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 13:17:32,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306967451] [2020-09-15 13:17:32,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 13:17:32,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:17:32,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 13:17:32,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 13:17:32,801 INFO L87 Difference]: Start difference. First operand 611 states and 1906 transitions. Second operand 12 states. [2020-09-15 13:17:33,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:17:33,194 INFO L93 Difference]: Finished difference Result 1059 states and 2818 transitions. [2020-09-15 13:17:33,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 13:17:33,196 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-09-15 13:17:33,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:17:33,206 INFO L225 Difference]: With dead ends: 1059 [2020-09-15 13:17:33,206 INFO L226 Difference]: Without dead ends: 1052 [2020-09-15 13:17:33,207 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 [2020-09-15 13:17:33,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-09-15 13:17:33,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 591. [2020-09-15 13:17:33,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-09-15 13:17:33,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1840 transitions. [2020-09-15 13:17:33,243 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1840 transitions. Word has length 15 [2020-09-15 13:17:33,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:17:33,243 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 1840 transitions. [2020-09-15 13:17:33,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 13:17:33,244 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1840 transitions. [2020-09-15 13:17:33,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 13:17:33,247 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:17:33,247 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:17:33,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-09-15 13:17:33,462 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 13:17:33,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:17:33,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1258473782, now seen corresponding path program 2 times [2020-09-15 13:17:33,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:17:33,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211328157] [2020-09-15 13:17:33,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:17:33,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:17:33,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 13:17:33,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211328157] [2020-09-15 13:17:33,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:17:33,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 13:17:33,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192119196] [2020-09-15 13:17:33,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 13:17:33,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:17:33,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 13:17:33,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 13:17:33,562 INFO L87 Difference]: Start difference. First operand 591 states and 1840 transitions. Second operand 7 states. [2020-09-15 13:17:33,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:17:33,891 INFO L93 Difference]: Finished difference Result 1053 states and 2807 transitions. [2020-09-15 13:17:33,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 13:17:33,892 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-15 13:17:33,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:17:33,901 INFO L225 Difference]: With dead ends: 1053 [2020-09-15 13:17:33,901 INFO L226 Difference]: Without dead ends: 1045 [2020-09-15 13:17:33,901 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 [2020-09-15 13:17:33,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-09-15 13:17:33,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 536. [2020-09-15 13:17:33,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-09-15 13:17:33,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1688 transitions. [2020-09-15 13:17:33,930 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1688 transitions. Word has length 15 [2020-09-15 13:17:33,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:17:33,930 INFO L479 AbstractCegarLoop]: Abstraction has 536 states and 1688 transitions. [2020-09-15 13:17:33,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 13:17:33,931 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1688 transitions. [2020-09-15 13:17:33,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-15 13:17:33,932 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:17:33,932 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:17:33,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-15 13:17:33,932 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 13:17:33,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:17:33,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1734594488, now seen corresponding path program 1 times [2020-09-15 13:17:33,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:17:33,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593302258] [2020-09-15 13:17:33,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:17:33,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:17:34,008 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 13:17:34,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593302258] [2020-09-15 13:17:34,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:17:34,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 13:17:34,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329774923] [2020-09-15 13:17:34,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 13:17:34,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:17:34,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 13:17:34,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 13:17:34,011 INFO L87 Difference]: Start difference. First operand 536 states and 1688 transitions. Second operand 5 states. [2020-09-15 13:17:34,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:17:34,137 INFO L93 Difference]: Finished difference Result 736 states and 2123 transitions. [2020-09-15 13:17:34,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 13:17:34,139 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-15 13:17:34,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:17:34,145 INFO L225 Difference]: With dead ends: 736 [2020-09-15 13:17:34,145 INFO L226 Difference]: Without dead ends: 728 [2020-09-15 13:17:34,146 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 [2020-09-15 13:17:34,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-09-15 13:17:34,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 549. [2020-09-15 13:17:34,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-09-15 13:17:34,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 1684 transitions. [2020-09-15 13:17:34,169 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 1684 transitions. Word has length 17 [2020-09-15 13:17:34,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:17:34,169 INFO L479 AbstractCegarLoop]: Abstraction has 549 states and 1684 transitions. [2020-09-15 13:17:34,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 13:17:34,170 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 1684 transitions. [2020-09-15 13:17:34,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-15 13:17:34,171 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:17:34,171 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:17:34,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-15 13:17:34,171 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 13:17:34,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:17:34,172 INFO L82 PathProgramCache]: Analyzing trace with hash -2065233823, now seen corresponding path program 1 times [2020-09-15 13:17:34,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:17:34,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732380337] [2020-09-15 13:17:34,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:17:34,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 13:17:34,201 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 13:17:34,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 13:17:34,219 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 13:17:34,233 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-15 13:17:34,234 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-15 13:17:34,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-15 13:17:34,234 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-15 13:17:34,235 WARN L363 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-15 13:17:34,236 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-09-15 13:17:34,252 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,253 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,253 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,253 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,254 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,254 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,254 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,254 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,254 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,254 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,255 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,255 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,255 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,255 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,255 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,256 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,256 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,256 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,256 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,256 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,256 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,257 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,257 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,257 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,257 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,257 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,257 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,258 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,258 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,258 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,258 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,258 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,259 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,259 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,259 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,259 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,259 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,260 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,260 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,260 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,260 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,260 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,260 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,261 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,261 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,261 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,261 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,261 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,262 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,262 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,262 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,262 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,262 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,262 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,263 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,263 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,263 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,263 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,263 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,264 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,264 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,264 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,264 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,264 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,264 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,264 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,265 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,265 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,265 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,266 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,266 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,266 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,266 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,270 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,270 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,271 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,271 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,271 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,273 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,273 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,273 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,273 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,274 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,276 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,276 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,277 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,277 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,277 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,278 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,279 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,279 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,279 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,279 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,279 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,281 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,281 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,281 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,281 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,282 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,282 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,284 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,284 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,284 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,284 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,284 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,286 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,287 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,288 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,288 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,288 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,288 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,288 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:34,290 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-09-15 13:17:34,290 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 13:17:34,290 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 13:17:34,290 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-15 13:17:34,290 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-15 13:17:34,291 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 13:17:34,291 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 13:17:34,291 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 13:17:34,291 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 13:17:34,294 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 106 transitions, 276 flow [2020-09-15 13:17:34,294 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 106 transitions, 276 flow [2020-09-15 13:17:34,311 INFO L129 PetriNetUnfolder]: 7/131 cut-off events. [2020-09-15 13:17:34,311 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-09-15 13:17:34,313 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. [2020-09-15 13:17:34,316 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 106 transitions, 276 flow [2020-09-15 13:17:34,332 INFO L129 PetriNetUnfolder]: 7/131 cut-off events. [2020-09-15 13:17:34,332 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-09-15 13:17:34,333 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. [2020-09-15 13:17:34,337 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1756 [2020-09-15 13:17:34,337 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-15 13:17:36,174 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-09-15 13:17:36,285 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-09-15 13:17:36,524 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-09-15 13:17:36,735 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-09-15 13:17:36,869 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2033 [2020-09-15 13:17:36,869 INFO L214 etLargeBlockEncoding]: Total number of compositions: 86 [2020-09-15 13:17:36,870 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 33 transitions, 130 flow [2020-09-15 13:17:36,988 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2060 states. [2020-09-15 13:17:36,989 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states. [2020-09-15 13:17:36,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-15 13:17:36,989 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:17:36,989 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-15 13:17:36,989 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]=== [2020-09-15 13:17:36,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:17:36,990 INFO L82 PathProgramCache]: Analyzing trace with hash 779528, now seen corresponding path program 1 times [2020-09-15 13:17:36,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:17:36,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959881242] [2020-09-15 13:17:36,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:17:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:17:37,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 13:17:37,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959881242] [2020-09-15 13:17:37,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:17:37,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 13:17:37,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178053498] [2020-09-15 13:17:37,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 13:17:37,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:17:37,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 13:17:37,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 13:17:37,022 INFO L87 Difference]: Start difference. First operand 2060 states. Second operand 3 states. [2020-09-15 13:17:37,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:17:37,079 INFO L93 Difference]: Finished difference Result 1889 states and 7217 transitions. [2020-09-15 13:17:37,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 13:17:37,079 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-15 13:17:37,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:17:37,098 INFO L225 Difference]: With dead ends: 1889 [2020-09-15 13:17:37,098 INFO L226 Difference]: Without dead ends: 1767 [2020-09-15 13:17:37,098 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 [2020-09-15 13:17:37,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-09-15 13:17:37,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1767. [2020-09-15 13:17:37,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2020-09-15 13:17:37,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 6690 transitions. [2020-09-15 13:17:37,203 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 6690 transitions. Word has length 3 [2020-09-15 13:17:37,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:17:37,203 INFO L479 AbstractCegarLoop]: Abstraction has 1767 states and 6690 transitions. [2020-09-15 13:17:37,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 13:17:37,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 6690 transitions. [2020-09-15 13:17:37,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-15 13:17:37,204 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:17:37,205 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:17:37,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-15 13:17:37,205 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]=== [2020-09-15 13:17:37,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:17:37,206 INFO L82 PathProgramCache]: Analyzing trace with hash -666106918, now seen corresponding path program 1 times [2020-09-15 13:17:37,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:17:37,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968951782] [2020-09-15 13:17:37,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:17:37,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:17:37,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 13:17:37,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968951782] [2020-09-15 13:17:37,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:17:37,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 13:17:37,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054867006] [2020-09-15 13:17:37,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 13:17:37,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:17:37,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 13:17:37,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 13:17:37,269 INFO L87 Difference]: Start difference. First operand 1767 states and 6690 transitions. Second operand 5 states. [2020-09-15 13:17:37,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:17:37,401 INFO L93 Difference]: Finished difference Result 2905 states and 10138 transitions. [2020-09-15 13:17:37,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 13:17:37,402 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-15 13:17:37,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:17:37,431 INFO L225 Difference]: With dead ends: 2905 [2020-09-15 13:17:37,431 INFO L226 Difference]: Without dead ends: 2899 [2020-09-15 13:17:37,432 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 [2020-09-15 13:17:37,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-09-15 13:17:37,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1966. [2020-09-15 13:17:37,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1966 states. [2020-09-15 13:17:37,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 7503 transitions. [2020-09-15 13:17:37,563 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 7503 transitions. Word has length 9 [2020-09-15 13:17:37,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:17:37,563 INFO L479 AbstractCegarLoop]: Abstraction has 1966 states and 7503 transitions. [2020-09-15 13:17:37,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 13:17:37,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 7503 transitions. [2020-09-15 13:17:37,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-15 13:17:37,564 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:17:37,565 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:17:37,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-15 13:17:37,565 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]=== [2020-09-15 13:17:37,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:17:37,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1766896000, now seen corresponding path program 1 times [2020-09-15 13:17:37,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:17:37,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446022779] [2020-09-15 13:17:37,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:17:37,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:17:37,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 13:17:37,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446022779] [2020-09-15 13:17:37,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:17:37,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 13:17:37,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881290982] [2020-09-15 13:17:37,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 13:17:37,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:17:37,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 13:17:37,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 13:17:37,635 INFO L87 Difference]: Start difference. First operand 1966 states and 7503 transitions. Second operand 5 states. [2020-09-15 13:17:37,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:17:37,771 INFO L93 Difference]: Finished difference Result 3204 states and 11312 transitions. [2020-09-15 13:17:37,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 13:17:37,772 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-15 13:17:37,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:17:37,803 INFO L225 Difference]: With dead ends: 3204 [2020-09-15 13:17:37,803 INFO L226 Difference]: Without dead ends: 3194 [2020-09-15 13:17:37,804 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 [2020-09-15 13:17:37,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2020-09-15 13:17:37,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 2200. [2020-09-15 13:17:37,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-09-15 13:17:37,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 8453 transitions. [2020-09-15 13:17:37,951 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 8453 transitions. Word has length 13 [2020-09-15 13:17:37,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:17:37,952 INFO L479 AbstractCegarLoop]: Abstraction has 2200 states and 8453 transitions. [2020-09-15 13:17:37,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 13:17:37,952 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 8453 transitions. [2020-09-15 13:17:37,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 13:17:37,953 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:17:37,953 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:17:37,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-15 13:17:37,953 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]=== [2020-09-15 13:17:37,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:17:37,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1022394712, now seen corresponding path program 1 times [2020-09-15 13:17:37,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:17:37,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135500145] [2020-09-15 13:17:37,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:17:37,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:17:38,137 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2020-09-15 13:17:38,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 13:17:38,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135500145] [2020-09-15 13:17:38,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167408300] [2020-09-15 13:17:38,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:17:38,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:17:38,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 13:17:38,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:17:38,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 13:17:38,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:17:38,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 13:17:38,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810763692] [2020-09-15 13:17:38,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 13:17:38,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:17:38,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 13:17:38,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 13:17:38,346 INFO L87 Difference]: Start difference. First operand 2200 states and 8453 transitions. Second operand 12 states. [2020-09-15 13:17:38,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:17:38,763 INFO L93 Difference]: Finished difference Result 4556 states and 14911 transitions. [2020-09-15 13:17:38,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 13:17:38,764 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-09-15 13:17:38,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:17:38,819 INFO L225 Difference]: With dead ends: 4556 [2020-09-15 13:17:38,819 INFO L226 Difference]: Without dead ends: 4546 [2020-09-15 13:17:38,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-15 13:17:38,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4546 states. [2020-09-15 13:17:38,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4546 to 2157. [2020-09-15 13:17:38,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2157 states. [2020-09-15 13:17:38,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 8278 transitions. [2020-09-15 13:17:38,987 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 8278 transitions. Word has length 15 [2020-09-15 13:17:38,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:17:38,988 INFO L479 AbstractCegarLoop]: Abstraction has 2157 states and 8278 transitions. [2020-09-15 13:17:38,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 13:17:38,988 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 8278 transitions. [2020-09-15 13:17:38,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 13:17:38,989 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:17:38,990 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:17:39,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-09-15 13:17:39,205 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]=== [2020-09-15 13:17:39,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:17:39,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1474969304, now seen corresponding path program 2 times [2020-09-15 13:17:39,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:17:39,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897598035] [2020-09-15 13:17:39,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:17:39,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:17:39,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 13:17:39,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897598035] [2020-09-15 13:17:39,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:17:39,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 13:17:39,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562734880] [2020-09-15 13:17:39,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 13:17:39,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:17:39,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 13:17:39,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 13:17:39,312 INFO L87 Difference]: Start difference. First operand 2157 states and 8278 transitions. Second operand 7 states. [2020-09-15 13:17:39,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:17:39,636 INFO L93 Difference]: Finished difference Result 4612 states and 15111 transitions. [2020-09-15 13:17:39,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 13:17:39,637 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-15 13:17:39,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:17:39,661 INFO L225 Difference]: With dead ends: 4612 [2020-09-15 13:17:39,661 INFO L226 Difference]: Without dead ends: 4601 [2020-09-15 13:17:39,663 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 [2020-09-15 13:17:39,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2020-09-15 13:17:39,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 2035. [2020-09-15 13:17:39,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2035 states. [2020-09-15 13:17:39,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 7845 transitions. [2020-09-15 13:17:39,825 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 7845 transitions. Word has length 15 [2020-09-15 13:17:39,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:17:39,826 INFO L479 AbstractCegarLoop]: Abstraction has 2035 states and 7845 transitions. [2020-09-15 13:17:39,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 13:17:39,827 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 7845 transitions. [2020-09-15 13:17:39,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-15 13:17:39,828 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:17:39,828 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:17:39,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-15 13:17:39,829 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]=== [2020-09-15 13:17:39,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:17:39,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1278978660, now seen corresponding path program 1 times [2020-09-15 13:17:39,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:17:39,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481011841] [2020-09-15 13:17:39,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:17:39,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:17:39,903 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 13:17:39,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481011841] [2020-09-15 13:17:39,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:17:39,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 13:17:39,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344195348] [2020-09-15 13:17:39,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 13:17:39,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:17:39,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 13:17:39,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 13:17:39,906 INFO L87 Difference]: Start difference. First operand 2035 states and 7845 transitions. Second operand 5 states. [2020-09-15 13:17:40,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:17:40,085 INFO L93 Difference]: Finished difference Result 3265 states and 11681 transitions. [2020-09-15 13:17:40,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 13:17:40,086 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-15 13:17:40,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:17:40,105 INFO L225 Difference]: With dead ends: 3265 [2020-09-15 13:17:40,105 INFO L226 Difference]: Without dead ends: 3250 [2020-09-15 13:17:40,106 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 [2020-09-15 13:17:40,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2020-09-15 13:17:40,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 2281. [2020-09-15 13:17:40,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2020-09-15 13:17:40,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 8755 transitions. [2020-09-15 13:17:40,248 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 8755 transitions. Word has length 17 [2020-09-15 13:17:40,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:17:40,248 INFO L479 AbstractCegarLoop]: Abstraction has 2281 states and 8755 transitions. [2020-09-15 13:17:40,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 13:17:40,249 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 8755 transitions. [2020-09-15 13:17:40,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 13:17:40,251 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:17:40,251 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:17:40,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-15 13:17:40,251 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]=== [2020-09-15 13:17:40,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:17:40,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1455436228, now seen corresponding path program 1 times [2020-09-15 13:17:40,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:17:40,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395313302] [2020-09-15 13:17:40,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:17:40,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:17:40,351 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 13:17:40,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395313302] [2020-09-15 13:17:40,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438718549] [2020-09-15 13:17:40,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:17:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:17:40,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 13:17:40,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:17:40,517 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 13:17:40,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:17:40,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 13:17:40,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733206375] [2020-09-15 13:17:40,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 13:17:40,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:17:40,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 13:17:40,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 13:17:40,519 INFO L87 Difference]: Start difference. First operand 2281 states and 8755 transitions. Second operand 12 states. [2020-09-15 13:17:40,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:17:40,945 INFO L93 Difference]: Finished difference Result 4825 states and 15986 transitions. [2020-09-15 13:17:40,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 13:17:40,946 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-15 13:17:40,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:17:40,971 INFO L225 Difference]: With dead ends: 4825 [2020-09-15 13:17:40,971 INFO L226 Difference]: Without dead ends: 4813 [2020-09-15 13:17:40,973 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 [2020-09-15 13:17:41,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4813 states. [2020-09-15 13:17:41,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4813 to 2305. [2020-09-15 13:17:41,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-09-15 13:17:41,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 8815 transitions. [2020-09-15 13:17:41,124 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 8815 transitions. Word has length 19 [2020-09-15 13:17:41,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:17:41,124 INFO L479 AbstractCegarLoop]: Abstraction has 2305 states and 8815 transitions. [2020-09-15 13:17:41,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 13:17:41,124 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 8815 transitions. [2020-09-15 13:17:41,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 13:17:41,129 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:17:41,129 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:17:41,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:17:41,342 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]=== [2020-09-15 13:17:41,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:17:41,344 INFO L82 PathProgramCache]: Analyzing trace with hash -979473248, now seen corresponding path program 1 times [2020-09-15 13:17:41,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:17:41,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114377894] [2020-09-15 13:17:41,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:17:41,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:17:41,464 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 13:17:41,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114377894] [2020-09-15 13:17:41,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189558255] [2020-09-15 13:17:41,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:17:41,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:17:41,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 13:17:41,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:17:41,645 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 13:17:41,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:17:41,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 13:17:41,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349659682] [2020-09-15 13:17:41,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 13:17:41,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:17:41,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 13:17:41,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 13:17:41,649 INFO L87 Difference]: Start difference. First operand 2305 states and 8815 transitions. Second operand 12 states. [2020-09-15 13:17:42,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:17:42,152 INFO L93 Difference]: Finished difference Result 4942 states and 16410 transitions. [2020-09-15 13:17:42,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 13:17:42,153 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-15 13:17:42,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:17:42,175 INFO L225 Difference]: With dead ends: 4942 [2020-09-15 13:17:42,175 INFO L226 Difference]: Without dead ends: 4925 [2020-09-15 13:17:42,176 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 [2020-09-15 13:17:42,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4925 states. [2020-09-15 13:17:42,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4925 to 2299. [2020-09-15 13:17:42,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2299 states. [2020-09-15 13:17:42,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 8782 transitions. [2020-09-15 13:17:42,326 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 8782 transitions. Word has length 19 [2020-09-15 13:17:42,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:17:42,326 INFO L479 AbstractCegarLoop]: Abstraction has 2299 states and 8782 transitions. [2020-09-15 13:17:42,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 13:17:42,327 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 8782 transitions. [2020-09-15 13:17:42,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 13:17:42,328 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:17:42,329 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:17:42,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:17:42,542 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]=== [2020-09-15 13:17:42,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:17:42,543 INFO L82 PathProgramCache]: Analyzing trace with hash -737855584, now seen corresponding path program 2 times [2020-09-15 13:17:42,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:17:42,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833818673] [2020-09-15 13:17:42,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:17:42,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:17:42,627 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 13:17:42,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833818673] [2020-09-15 13:17:42,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:17:42,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 13:17:42,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513046763] [2020-09-15 13:17:42,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 13:17:42,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:17:42,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 13:17:42,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 13:17:42,629 INFO L87 Difference]: Start difference. First operand 2299 states and 8782 transitions. Second operand 7 states. [2020-09-15 13:17:42,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:17:42,990 INFO L93 Difference]: Finished difference Result 4934 states and 16393 transitions. [2020-09-15 13:17:42,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 13:17:42,990 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-15 13:17:42,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:17:43,017 INFO L225 Difference]: With dead ends: 4934 [2020-09-15 13:17:43,018 INFO L226 Difference]: Without dead ends: 4917 [2020-09-15 13:17:43,018 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 [2020-09-15 13:17:43,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4917 states. [2020-09-15 13:17:43,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4917 to 2216. [2020-09-15 13:17:43,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2216 states. [2020-09-15 13:17:43,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 8477 transitions. [2020-09-15 13:17:43,166 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 8477 transitions. Word has length 19 [2020-09-15 13:17:43,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:17:43,166 INFO L479 AbstractCegarLoop]: Abstraction has 2216 states and 8477 transitions. [2020-09-15 13:17:43,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 13:17:43,167 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 8477 transitions. [2020-09-15 13:17:43,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 13:17:43,169 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:17:43,169 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:17:43,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-15 13:17:43,169 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]=== [2020-09-15 13:17:43,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:17:43,170 INFO L82 PathProgramCache]: Analyzing trace with hash -737840828, now seen corresponding path program 2 times [2020-09-15 13:17:43,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:17:43,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512145428] [2020-09-15 13:17:43,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:17:43,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:17:43,254 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 13:17:43,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512145428] [2020-09-15 13:17:43,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:17:43,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 13:17:43,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983889162] [2020-09-15 13:17:43,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 13:17:43,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:17:43,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 13:17:43,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 13:17:43,256 INFO L87 Difference]: Start difference. First operand 2216 states and 8477 transitions. Second operand 7 states. [2020-09-15 13:17:43,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:17:43,610 INFO L93 Difference]: Finished difference Result 4774 states and 15828 transitions. [2020-09-15 13:17:43,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 13:17:43,610 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-15 13:17:43,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:17:43,634 INFO L225 Difference]: With dead ends: 4774 [2020-09-15 13:17:43,635 INFO L226 Difference]: Without dead ends: 4757 [2020-09-15 13:17:43,635 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 [2020-09-15 13:17:43,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2020-09-15 13:17:43,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 2150. [2020-09-15 13:17:43,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2150 states. [2020-09-15 13:17:43,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 8243 transitions. [2020-09-15 13:17:43,789 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 8243 transitions. Word has length 19 [2020-09-15 13:17:43,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:17:43,789 INFO L479 AbstractCegarLoop]: Abstraction has 2150 states and 8243 transitions. [2020-09-15 13:17:43,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 13:17:43,789 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 8243 transitions. [2020-09-15 13:17:43,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 13:17:43,792 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:17:43,792 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:17:43,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-15 13:17:43,793 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]=== [2020-09-15 13:17:43,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:17:43,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1726751032, now seen corresponding path program 1 times [2020-09-15 13:17:43,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:17:43,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132691498] [2020-09-15 13:17:43,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:17:43,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:17:44,001 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 13:17:44,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132691498] [2020-09-15 13:17:44,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409221002] [2020-09-15 13:17:44,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:17:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:17:44,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 13:17:44,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:17:44,206 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 13:17:44,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:17:44,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 13:17:44,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776459828] [2020-09-15 13:17:44,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 13:17:44,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:17:44,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 13:17:44,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 13:17:44,209 INFO L87 Difference]: Start difference. First operand 2150 states and 8243 transitions. Second operand 16 states. [2020-09-15 13:17:45,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:17:45,204 INFO L93 Difference]: Finished difference Result 6025 states and 18746 transitions. [2020-09-15 13:17:45,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:17:45,205 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-15 13:17:45,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:17:45,225 INFO L225 Difference]: With dead ends: 6025 [2020-09-15 13:17:45,225 INFO L226 Difference]: Without dead ends: 6017 [2020-09-15 13:17:45,226 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 [2020-09-15 13:17:45,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6017 states. [2020-09-15 13:17:45,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6017 to 2117. [2020-09-15 13:17:45,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2117 states. [2020-09-15 13:17:45,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 8106 transitions. [2020-09-15 13:17:45,378 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 8106 transitions. Word has length 21 [2020-09-15 13:17:45,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:17:45,379 INFO L479 AbstractCegarLoop]: Abstraction has 2117 states and 8106 transitions. [2020-09-15 13:17:45,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 13:17:45,380 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 8106 transitions. [2020-09-15 13:17:45,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 13:17:45,382 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:17:45,382 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:17:45,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-09-15 13:17:45,596 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]=== [2020-09-15 13:17:45,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:17:45,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1485133368, now seen corresponding path program 2 times [2020-09-15 13:17:45,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:17:45,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49565191] [2020-09-15 13:17:45,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:17:45,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:17:45,721 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 13:17:45,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49565191] [2020-09-15 13:17:45,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272223311] [2020-09-15 13:17:45,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:17:45,813 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 13:17:45,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 13:17:45,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 13:17:45,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:17:45,941 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 13:17:45,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:17:45,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 13:17:45,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581926148] [2020-09-15 13:17:45,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 13:17:45,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:17:45,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 13:17:45,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 13:17:45,944 INFO L87 Difference]: Start difference. First operand 2117 states and 8106 transitions. Second operand 16 states. [2020-09-15 13:17:47,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:17:47,032 INFO L93 Difference]: Finished difference Result 5914 states and 18384 transitions. [2020-09-15 13:17:47,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:17:47,034 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-15 13:17:47,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:17:47,051 INFO L225 Difference]: With dead ends: 5914 [2020-09-15 13:17:47,051 INFO L226 Difference]: Without dead ends: 5903 [2020-09-15 13:17:47,052 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 [2020-09-15 13:17:47,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5903 states. [2020-09-15 13:17:47,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5903 to 2085. [2020-09-15 13:17:47,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2085 states. [2020-09-15 13:17:47,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 7975 transitions. [2020-09-15 13:17:47,179 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 7975 transitions. Word has length 21 [2020-09-15 13:17:47,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:17:47,180 INFO L479 AbstractCegarLoop]: Abstraction has 2085 states and 7975 transitions. [2020-09-15 13:17:47,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 13:17:47,180 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 7975 transitions. [2020-09-15 13:17:47,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 13:17:47,184 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:17:47,185 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:17:47,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:17:47,399 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]=== [2020-09-15 13:17:47,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:17:47,399 INFO L82 PathProgramCache]: Analyzing trace with hash -268549816, now seen corresponding path program 3 times [2020-09-15 13:17:47,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:17:47,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049959503] [2020-09-15 13:17:47,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:17:47,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:17:47,509 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 13:17:47,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049959503] [2020-09-15 13:17:47,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150706766] [2020-09-15 13:17:47,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:17:47,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-15 13:17:47,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 13:17:47,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 13:17:47,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:17:47,738 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 13:17:47,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:17:47,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 13:17:47,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682667704] [2020-09-15 13:17:47,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 13:17:47,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:17:47,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 13:17:47,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 13:17:47,741 INFO L87 Difference]: Start difference. First operand 2085 states and 7975 transitions. Second operand 16 states. [2020-09-15 13:17:48,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:17:48,747 INFO L93 Difference]: Finished difference Result 5907 states and 18375 transitions. [2020-09-15 13:17:48,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:17:48,748 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-15 13:17:48,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:17:48,763 INFO L225 Difference]: With dead ends: 5907 [2020-09-15 13:17:48,763 INFO L226 Difference]: Without dead ends: 5899 [2020-09-15 13:17:48,764 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 [2020-09-15 13:17:48,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5899 states. [2020-09-15 13:17:48,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5899 to 2008. [2020-09-15 13:17:48,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2008 states. [2020-09-15 13:17:48,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 7698 transitions. [2020-09-15 13:17:48,871 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 7698 transitions. Word has length 21 [2020-09-15 13:17:48,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:17:48,872 INFO L479 AbstractCegarLoop]: Abstraction has 2008 states and 7698 transitions. [2020-09-15 13:17:48,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 13:17:48,872 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 7698 transitions. [2020-09-15 13:17:48,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 13:17:48,874 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:17:48,874 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:17:49,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-09-15 13:17:49,088 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]=== [2020-09-15 13:17:49,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:17:49,089 INFO L82 PathProgramCache]: Analyzing trace with hash -675948728, now seen corresponding path program 4 times [2020-09-15 13:17:49,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:17:49,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215093680] [2020-09-15 13:17:49,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:17:49,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:17:49,237 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 13:17:49,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215093680] [2020-09-15 13:17:49,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105236751] [2020-09-15 13:17:49,238 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:17:49,481 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 13:17:49,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 13:17:49,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 13:17:49,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:17:49,632 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 13:17:49,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:17:49,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 13:17:49,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818682213] [2020-09-15 13:17:49,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 13:17:49,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:17:49,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 13:17:49,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 13:17:49,635 INFO L87 Difference]: Start difference. First operand 2008 states and 7698 transitions. Second operand 16 states. [2020-09-15 13:17:50,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:17:50,669 INFO L93 Difference]: Finished difference Result 5835 states and 18155 transitions. [2020-09-15 13:17:50,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:17:50,670 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-15 13:17:50,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:17:50,683 INFO L225 Difference]: With dead ends: 5835 [2020-09-15 13:17:50,684 INFO L226 Difference]: Without dead ends: 5824 [2020-09-15 13:17:50,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 13:17:50,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5824 states. [2020-09-15 13:17:50,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5824 to 1976. [2020-09-15 13:17:50,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1976 states. [2020-09-15 13:17:50,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 7567 transitions. [2020-09-15 13:17:50,790 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 7567 transitions. Word has length 21 [2020-09-15 13:17:50,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:17:50,791 INFO L479 AbstractCegarLoop]: Abstraction has 1976 states and 7567 transitions. [2020-09-15 13:17:50,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 13:17:50,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 7567 transitions. [2020-09-15 13:17:50,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 13:17:50,793 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:17:50,793 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:17:51,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-09-15 13:17:51,009 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]=== [2020-09-15 13:17:51,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:17:51,010 INFO L82 PathProgramCache]: Analyzing trace with hash -409607608, now seen corresponding path program 5 times [2020-09-15 13:17:51,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:17:51,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075429029] [2020-09-15 13:17:51,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:17:51,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:17:51,130 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 13:17:51,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075429029] [2020-09-15 13:17:51,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:17:51,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 13:17:51,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512129584] [2020-09-15 13:17:51,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 13:17:51,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:17:51,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 13:17:51,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 13:17:51,132 INFO L87 Difference]: Start difference. First operand 1976 states and 7567 transitions. Second operand 9 states. [2020-09-15 13:17:52,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:17:52,000 INFO L93 Difference]: Finished difference Result 5820 states and 18126 transitions. [2020-09-15 13:17:52,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:17:52,001 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-15 13:17:52,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:17:52,015 INFO L225 Difference]: With dead ends: 5820 [2020-09-15 13:17:52,015 INFO L226 Difference]: Without dead ends: 5812 [2020-09-15 13:17:52,015 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 [2020-09-15 13:17:52,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5812 states. [2020-09-15 13:17:52,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5812 to 1907. [2020-09-15 13:17:52,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1907 states. [2020-09-15 13:17:52,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 7310 transitions. [2020-09-15 13:17:52,115 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 7310 transitions. Word has length 21 [2020-09-15 13:17:52,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:17:52,116 INFO L479 AbstractCegarLoop]: Abstraction has 1907 states and 7310 transitions. [2020-09-15 13:17:52,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 13:17:52,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 7310 transitions. [2020-09-15 13:17:52,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 13:17:52,182 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:17:52,182 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:17:52,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-09-15 13:17:52,183 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]=== [2020-09-15 13:17:52,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:17:52,183 INFO L82 PathProgramCache]: Analyzing trace with hash -395441848, now seen corresponding path program 6 times [2020-09-15 13:17:52,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:17:52,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267661961] [2020-09-15 13:17:52,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:17:52,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:17:52,322 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 13:17:52,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267661961] [2020-09-15 13:17:52,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:17:52,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 13:17:52,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299622460] [2020-09-15 13:17:52,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 13:17:52,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:17:52,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 13:17:52,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 13:17:52,325 INFO L87 Difference]: Start difference. First operand 1907 states and 7310 transitions. Second operand 9 states. [2020-09-15 13:17:53,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:17:53,172 INFO L93 Difference]: Finished difference Result 5717 states and 17784 transitions. [2020-09-15 13:17:53,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:17:53,173 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-15 13:17:53,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:17:53,187 INFO L225 Difference]: With dead ends: 5717 [2020-09-15 13:17:53,187 INFO L226 Difference]: Without dead ends: 5705 [2020-09-15 13:17:53,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 13:17:53,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5705 states. [2020-09-15 13:17:53,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5705 to 1800. [2020-09-15 13:17:53,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1800 states. [2020-09-15 13:17:53,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 6961 transitions. [2020-09-15 13:17:53,310 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 6961 transitions. Word has length 21 [2020-09-15 13:17:53,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:17:53,311 INFO L479 AbstractCegarLoop]: Abstraction has 1800 states and 6961 transitions. [2020-09-15 13:17:53,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 13:17:53,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 6961 transitions. [2020-09-15 13:17:53,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 13:17:53,313 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:17:53,313 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:17:53,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-09-15 13:17:53,314 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]=== [2020-09-15 13:17:53,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:17:53,314 INFO L82 PathProgramCache]: Analyzing trace with hash -334654421, now seen corresponding path program 1 times [2020-09-15 13:17:53,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:17:53,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399482011] [2020-09-15 13:17:53,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:17:53,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:17:53,385 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 13:17:53,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399482011] [2020-09-15 13:17:53,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:17:53,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 13:17:53,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700266862] [2020-09-15 13:17:53,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 13:17:53,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:17:53,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 13:17:53,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 13:17:53,387 INFO L87 Difference]: Start difference. First operand 1800 states and 6961 transitions. Second operand 5 states. [2020-09-15 13:17:53,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:17:53,506 INFO L93 Difference]: Finished difference Result 2762 states and 9976 transitions. [2020-09-15 13:17:53,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 13:17:53,507 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-15 13:17:53,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:17:53,514 INFO L225 Difference]: With dead ends: 2762 [2020-09-15 13:17:53,514 INFO L226 Difference]: Without dead ends: 2746 [2020-09-15 13:17:53,515 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 [2020-09-15 13:17:53,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2020-09-15 13:17:53,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 1965. [2020-09-15 13:17:53,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2020-09-15 13:17:53,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 7429 transitions. [2020-09-15 13:17:53,591 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 7429 transitions. Word has length 21 [2020-09-15 13:17:53,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:17:53,591 INFO L479 AbstractCegarLoop]: Abstraction has 1965 states and 7429 transitions. [2020-09-15 13:17:53,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 13:17:53,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 7429 transitions. [2020-09-15 13:17:53,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-15 13:17:53,594 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:17:53,594 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:17:53,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-09-15 13:17:53,595 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]=== [2020-09-15 13:17:53,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:17:53,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1788555247, now seen corresponding path program 1 times [2020-09-15 13:17:53,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:17:53,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304730245] [2020-09-15 13:17:53,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:17:53,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 13:17:53,614 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 13:17:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 13:17:53,630 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 13:17:53,647 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-15 13:17:53,647 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-15 13:17:53,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-09-15 13:17:53,648 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-15 13:17:53,648 WARN L363 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-15 13:17:53,649 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-09-15 13:17:53,668 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,668 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,668 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,669 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,669 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,669 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,669 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,669 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,670 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,670 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,670 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,670 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,670 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,670 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,671 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,672 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,672 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,672 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,673 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,673 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,673 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,673 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,673 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,674 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,674 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,674 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,674 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,674 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,674 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,674 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,675 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,675 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,675 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,675 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,675 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,675 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,676 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,676 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,676 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,676 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,676 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,676 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,677 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,677 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,677 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,677 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,677 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,677 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,677 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,678 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,678 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,678 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,678 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,678 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,678 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,679 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,679 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,679 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,679 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,679 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,679 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,680 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,680 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,680 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,680 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,680 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,680 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,680 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,681 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,681 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,681 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,681 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,681 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,681 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,682 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,682 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,682 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,682 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,682 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,682 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,682 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,683 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,683 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,683 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,683 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,686 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,686 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,686 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,686 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,686 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,688 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,688 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,688 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,689 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,689 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,691 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,692 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,692 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,692 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,692 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,693 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,694 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,694 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,694 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,694 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,695 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,696 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,696 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,696 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,696 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,697 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,698 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,698 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,698 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,698 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,698 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,701 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,701 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,701 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,701 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,701 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,701 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,703 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,704 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,704 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,704 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,704 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,704 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,706 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,707 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,707 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,707 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,707 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,707 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,710 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,710 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,710 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,710 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,710 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,710 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:17:53,712 INFO L251 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-09-15 13:17:53,713 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 13:17:53,713 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 13:17:53,713 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-15 13:17:53,713 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-15 13:17:53,713 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 13:17:53,713 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 13:17:53,714 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 13:17:53,714 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 13:17:53,715 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 122 transitions, 334 flow [2020-09-15 13:17:53,715 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 137 places, 122 transitions, 334 flow [2020-09-15 13:17:53,734 INFO L129 PetriNetUnfolder]: 8/152 cut-off events. [2020-09-15 13:17:53,734 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-09-15 13:17:53,736 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. [2020-09-15 13:17:53,740 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 137 places, 122 transitions, 334 flow [2020-09-15 13:17:53,756 INFO L129 PetriNetUnfolder]: 8/152 cut-off events. [2020-09-15 13:17:53,757 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-09-15 13:17:53,758 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. [2020-09-15 13:17:53,762 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2264 [2020-09-15 13:17:53,762 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-15 13:17:55,527 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-09-15 13:17:55,637 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-09-15 13:17:55,967 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2020-09-15 13:17:56,235 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-09-15 13:17:56,347 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2999 [2020-09-15 13:17:56,347 INFO L214 etLargeBlockEncoding]: Total number of compositions: 104 [2020-09-15 13:17:56,348 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 39 transitions, 168 flow [2020-09-15 13:17:56,726 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6191 states. [2020-09-15 13:17:56,726 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states. [2020-09-15 13:17:56,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-15 13:17:56,727 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:17:56,727 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-15 13:17:56,727 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]=== [2020-09-15 13:17:56,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:17:56,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1026170, now seen corresponding path program 1 times [2020-09-15 13:17:56,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:17:56,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001280650] [2020-09-15 13:17:56,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:17:56,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:17:56,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 13:17:56,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001280650] [2020-09-15 13:17:56,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:17:56,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 13:17:56,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384224101] [2020-09-15 13:17:56,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 13:17:56,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:17:56,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 13:17:56,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 13:17:56,758 INFO L87 Difference]: Start difference. First operand 6191 states. Second operand 3 states. [2020-09-15 13:17:56,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:17:56,854 INFO L93 Difference]: Finished difference Result 5844 states and 26316 transitions. [2020-09-15 13:17:56,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 13:17:56,855 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-15 13:17:56,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:17:56,882 INFO L225 Difference]: With dead ends: 5844 [2020-09-15 13:17:56,882 INFO L226 Difference]: Without dead ends: 5479 [2020-09-15 13:17:56,883 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 [2020-09-15 13:17:56,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5479 states. [2020-09-15 13:17:57,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5479 to 5479. [2020-09-15 13:17:57,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5479 states. [2020-09-15 13:17:57,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5479 states to 5479 states and 24493 transitions. [2020-09-15 13:17:57,083 INFO L78 Accepts]: Start accepts. Automaton has 5479 states and 24493 transitions. Word has length 3 [2020-09-15 13:17:57,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:17:57,084 INFO L479 AbstractCegarLoop]: Abstraction has 5479 states and 24493 transitions. [2020-09-15 13:17:57,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 13:17:57,084 INFO L276 IsEmpty]: Start isEmpty. Operand 5479 states and 24493 transitions. [2020-09-15 13:17:57,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-15 13:17:57,084 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:17:57,084 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:17:57,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-09-15 13:17:57,085 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]=== [2020-09-15 13:17:57,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:17:57,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1344335463, now seen corresponding path program 1 times [2020-09-15 13:17:57,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:17:57,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096117667] [2020-09-15 13:17:57,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:17:57,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:17:57,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 13:17:57,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096117667] [2020-09-15 13:17:57,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:17:57,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 13:17:57,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405495001] [2020-09-15 13:17:57,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 13:17:57,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:17:57,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 13:17:57,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 13:17:57,152 INFO L87 Difference]: Start difference. First operand 5479 states and 24493 transitions. Second operand 5 states. [2020-09-15 13:17:57,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:17:57,320 INFO L93 Difference]: Finished difference Result 9673 states and 40333 transitions. [2020-09-15 13:17:57,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 13:17:57,320 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-15 13:17:57,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:17:57,511 INFO L225 Difference]: With dead ends: 9673 [2020-09-15 13:17:57,512 INFO L226 Difference]: Without dead ends: 9666 [2020-09-15 13:17:57,512 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 [2020-09-15 13:17:57,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9666 states. [2020-09-15 13:17:57,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9666 to 6331. [2020-09-15 13:17:57,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6331 states. [2020-09-15 13:17:57,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 28544 transitions. [2020-09-15 13:17:57,745 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 28544 transitions. Word has length 9 [2020-09-15 13:17:57,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:17:57,745 INFO L479 AbstractCegarLoop]: Abstraction has 6331 states and 28544 transitions. [2020-09-15 13:17:57,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 13:17:57,745 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 28544 transitions. [2020-09-15 13:17:57,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-15 13:17:57,746 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:17:57,746 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:17:57,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-09-15 13:17:57,746 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]=== [2020-09-15 13:17:57,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:17:57,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1513378118, now seen corresponding path program 1 times [2020-09-15 13:17:57,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:17:57,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200165544] [2020-09-15 13:17:57,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:17:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:17:57,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 13:17:57,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200165544] [2020-09-15 13:17:57,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:17:57,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 13:17:57,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120824705] [2020-09-15 13:17:57,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 13:17:57,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:17:57,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 13:17:57,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 13:17:57,810 INFO L87 Difference]: Start difference. First operand 6331 states and 28544 transitions. Second operand 5 states. [2020-09-15 13:17:57,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:17:57,997 INFO L93 Difference]: Finished difference Result 11081 states and 46826 transitions. [2020-09-15 13:17:57,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 13:17:57,998 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-15 13:17:57,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:17:58,036 INFO L225 Difference]: With dead ends: 11081 [2020-09-15 13:17:58,036 INFO L226 Difference]: Without dead ends: 11068 [2020-09-15 13:17:58,036 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 [2020-09-15 13:17:58,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11068 states. [2020-09-15 13:17:58,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11068 to 7391. [2020-09-15 13:17:58,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7391 states. [2020-09-15 13:17:58,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7391 states to 7391 states and 33694 transitions. [2020-09-15 13:17:58,320 INFO L78 Accepts]: Start accepts. Automaton has 7391 states and 33694 transitions. Word has length 13 [2020-09-15 13:17:58,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:17:58,321 INFO L479 AbstractCegarLoop]: Abstraction has 7391 states and 33694 transitions. [2020-09-15 13:17:58,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 13:17:58,321 INFO L276 IsEmpty]: Start isEmpty. Operand 7391 states and 33694 transitions. [2020-09-15 13:17:58,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 13:17:58,321 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:17:58,321 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:17:58,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-09-15 13:17:58,322 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]=== [2020-09-15 13:17:58,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:17:58,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1678648171, now seen corresponding path program 1 times [2020-09-15 13:17:58,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:17:58,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000051325] [2020-09-15 13:17:58,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:17:58,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:17:58,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 13:17:58,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000051325] [2020-09-15 13:17:58,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123853672] [2020-09-15 13:17:58,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:17:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:17:58,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 13:17:58,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:17:58,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 13:17:58,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:17:58,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 13:17:58,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438886396] [2020-09-15 13:17:58,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 13:17:58,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:17:58,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 13:17:58,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 13:17:58,570 INFO L87 Difference]: Start difference. First operand 7391 states and 33694 transitions. Second operand 12 states. [2020-09-15 13:17:59,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:17:59,055 INFO L93 Difference]: Finished difference Result 16749 states and 66010 transitions. [2020-09-15 13:17:59,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 13:17:59,057 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-09-15 13:17:59,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:17:59,130 INFO L225 Difference]: With dead ends: 16749 [2020-09-15 13:17:59,131 INFO L226 Difference]: Without dead ends: 16736 [2020-09-15 13:17:59,131 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 [2020-09-15 13:18:00,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16736 states. [2020-09-15 13:18:00,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16736 to 7303. [2020-09-15 13:18:00,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7303 states. [2020-09-15 13:18:00,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7303 states to 7303 states and 33260 transitions. [2020-09-15 13:18:00,275 INFO L78 Accepts]: Start accepts. Automaton has 7303 states and 33260 transitions. Word has length 15 [2020-09-15 13:18:00,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:18:00,275 INFO L479 AbstractCegarLoop]: Abstraction has 7303 states and 33260 transitions. [2020-09-15 13:18:00,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 13:18:00,275 INFO L276 IsEmpty]: Start isEmpty. Operand 7303 states and 33260 transitions. [2020-09-15 13:18:00,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 13:18:00,276 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:18:00,276 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:18:00,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:18:00,477 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]=== [2020-09-15 13:18:00,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:18:00,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1637555113, now seen corresponding path program 2 times [2020-09-15 13:18:00,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:18:00,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46733480] [2020-09-15 13:18:00,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:18:00,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:18:00,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 13:18:00,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46733480] [2020-09-15 13:18:00,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:18:00,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 13:18:00,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662339813] [2020-09-15 13:18:00,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 13:18:00,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:18:00,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 13:18:00,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 13:18:00,549 INFO L87 Difference]: Start difference. First operand 7303 states and 33260 transitions. Second operand 7 states. [2020-09-15 13:18:00,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:18:00,977 INFO L93 Difference]: Finished difference Result 17085 states and 67393 transitions. [2020-09-15 13:18:00,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 13:18:00,977 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-15 13:18:00,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:18:01,033 INFO L225 Difference]: With dead ends: 17085 [2020-09-15 13:18:01,034 INFO L226 Difference]: Without dead ends: 17071 [2020-09-15 13:18:01,034 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 [2020-09-15 13:18:01,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17071 states. [2020-09-15 13:18:01,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17071 to 7048. [2020-09-15 13:18:01,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7048 states. [2020-09-15 13:18:01,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7048 states to 7048 states and 32136 transitions. [2020-09-15 13:18:01,375 INFO L78 Accepts]: Start accepts. Automaton has 7048 states and 32136 transitions. Word has length 15 [2020-09-15 13:18:01,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:18:01,376 INFO L479 AbstractCegarLoop]: Abstraction has 7048 states and 32136 transitions. [2020-09-15 13:18:01,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 13:18:01,376 INFO L276 IsEmpty]: Start isEmpty. Operand 7048 states and 32136 transitions. [2020-09-15 13:18:01,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-15 13:18:01,376 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:18:01,377 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:18:01,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-09-15 13:18:01,377 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]=== [2020-09-15 13:18:01,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:18:01,377 INFO L82 PathProgramCache]: Analyzing trace with hash -288445665, now seen corresponding path program 1 times [2020-09-15 13:18:01,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:18:01,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196447535] [2020-09-15 13:18:01,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:18:01,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:18:01,448 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 13:18:01,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196447535] [2020-09-15 13:18:01,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:18:01,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 13:18:01,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708652030] [2020-09-15 13:18:01,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 13:18:01,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:18:01,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 13:18:01,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 13:18:01,450 INFO L87 Difference]: Start difference. First operand 7048 states and 32136 transitions. Second operand 5 states. [2020-09-15 13:18:01,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:18:01,838 INFO L93 Difference]: Finished difference Result 12234 states and 52488 transitions. [2020-09-15 13:18:01,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 13:18:01,839 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-15 13:18:01,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:18:01,884 INFO L225 Difference]: With dead ends: 12234 [2020-09-15 13:18:01,884 INFO L226 Difference]: Without dead ends: 12212 [2020-09-15 13:18:01,885 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 [2020-09-15 13:18:01,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12212 states. [2020-09-15 13:18:02,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12212 to 8342. [2020-09-15 13:18:02,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8342 states. [2020-09-15 13:18:02,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8342 states to 8342 states and 38278 transitions. [2020-09-15 13:18:02,185 INFO L78 Accepts]: Start accepts. Automaton has 8342 states and 38278 transitions. Word has length 17 [2020-09-15 13:18:02,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:18:02,186 INFO L479 AbstractCegarLoop]: Abstraction has 8342 states and 38278 transitions. [2020-09-15 13:18:02,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 13:18:02,186 INFO L276 IsEmpty]: Start isEmpty. Operand 8342 states and 38278 transitions. [2020-09-15 13:18:02,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 13:18:02,187 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:18:02,187 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:18:02,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-09-15 13:18:02,187 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]=== [2020-09-15 13:18:02,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:18:02,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1255672082, now seen corresponding path program 1 times [2020-09-15 13:18:02,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:18:02,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464364166] [2020-09-15 13:18:02,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:18:02,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:18:02,269 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-15 13:18:02,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464364166] [2020-09-15 13:18:02,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101098640] [2020-09-15 13:18:02,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:18:02,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:18:02,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 13:18:02,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:18:02,441 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-15 13:18:02,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:18:02,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 13:18:02,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853088427] [2020-09-15 13:18:02,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 13:18:02,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:18:02,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 13:18:02,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 13:18:02,444 INFO L87 Difference]: Start difference. First operand 8342 states and 38278 transitions. Second operand 12 states. [2020-09-15 13:18:02,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:18:02,904 INFO L93 Difference]: Finished difference Result 19016 states and 76191 transitions. [2020-09-15 13:18:02,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 13:18:02,905 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-15 13:18:02,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:18:02,971 INFO L225 Difference]: With dead ends: 19016 [2020-09-15 13:18:02,971 INFO L226 Difference]: Without dead ends: 18998 [2020-09-15 13:18:02,971 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 [2020-09-15 13:18:03,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18998 states. [2020-09-15 13:18:03,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18998 to 8452. [2020-09-15 13:18:03,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8452 states. [2020-09-15 13:18:03,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8452 states to 8452 states and 38704 transitions. [2020-09-15 13:18:03,368 INFO L78 Accepts]: Start accepts. Automaton has 8452 states and 38704 transitions. Word has length 19 [2020-09-15 13:18:03,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:18:03,368 INFO L479 AbstractCegarLoop]: Abstraction has 8452 states and 38704 transitions. [2020-09-15 13:18:03,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 13:18:03,368 INFO L276 IsEmpty]: Start isEmpty. Operand 8452 states and 38704 transitions. [2020-09-15 13:18:03,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 13:18:03,370 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:18:03,370 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:18:03,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-09-15 13:18:03,579 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]=== [2020-09-15 13:18:03,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:18:03,580 INFO L82 PathProgramCache]: Analyzing trace with hash 402059005, now seen corresponding path program 1 times [2020-09-15 13:18:03,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:18:03,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043209515] [2020-09-15 13:18:03,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:18:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:18:03,657 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 13:18:03,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043209515] [2020-09-15 13:18:03,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370475093] [2020-09-15 13:18:03,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:18:03,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:18:03,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 13:18:03,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:18:03,854 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 13:18:03,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:18:03,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 13:18:03,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008468531] [2020-09-15 13:18:03,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 13:18:03,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:18:03,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 13:18:03,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 13:18:03,857 INFO L87 Difference]: Start difference. First operand 8452 states and 38704 transitions. Second operand 12 states. [2020-09-15 13:18:04,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:18:04,618 INFO L93 Difference]: Finished difference Result 19670 states and 79028 transitions. [2020-09-15 13:18:04,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 13:18:04,619 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-15 13:18:04,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:18:04,729 INFO L225 Difference]: With dead ends: 19670 [2020-09-15 13:18:04,729 INFO L226 Difference]: Without dead ends: 19645 [2020-09-15 13:18:04,730 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 [2020-09-15 13:18:04,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19645 states. [2020-09-15 13:18:05,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19645 to 8480. [2020-09-15 13:18:05,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8480 states. [2020-09-15 13:18:05,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8480 states to 8480 states and 38825 transitions. [2020-09-15 13:18:05,344 INFO L78 Accepts]: Start accepts. Automaton has 8480 states and 38825 transitions. Word has length 19 [2020-09-15 13:18:05,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:18:05,344 INFO L479 AbstractCegarLoop]: Abstraction has 8480 states and 38825 transitions. [2020-09-15 13:18:05,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 13:18:05,344 INFO L276 IsEmpty]: Start isEmpty. Operand 8480 states and 38825 transitions. [2020-09-15 13:18:05,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 13:18:05,345 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:18:05,345 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:18:05,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-09-15 13:18:05,546 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]=== [2020-09-15 13:18:05,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:18:05,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1976597437, now seen corresponding path program 2 times [2020-09-15 13:18:05,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:18:05,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731305310] [2020-09-15 13:18:05,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:18:05,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:18:05,627 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 13:18:05,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731305310] [2020-09-15 13:18:05,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:18:05,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 13:18:05,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671455460] [2020-09-15 13:18:05,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 13:18:05,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:18:05,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 13:18:05,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 13:18:05,629 INFO L87 Difference]: Start difference. First operand 8480 states and 38825 transitions. Second operand 7 states. [2020-09-15 13:18:06,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:18:06,135 INFO L93 Difference]: Finished difference Result 19852 states and 79846 transitions. [2020-09-15 13:18:06,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 13:18:06,136 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-15 13:18:06,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:18:06,203 INFO L225 Difference]: With dead ends: 19852 [2020-09-15 13:18:06,203 INFO L226 Difference]: Without dead ends: 19827 [2020-09-15 13:18:06,209 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 [2020-09-15 13:18:06,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19827 states. [2020-09-15 13:18:06,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19827 to 8379. [2020-09-15 13:18:06,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8379 states. [2020-09-15 13:18:06,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8379 states to 8379 states and 38406 transitions. [2020-09-15 13:18:06,623 INFO L78 Accepts]: Start accepts. Automaton has 8379 states and 38406 transitions. Word has length 19 [2020-09-15 13:18:06,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:18:06,624 INFO L479 AbstractCegarLoop]: Abstraction has 8379 states and 38406 transitions. [2020-09-15 13:18:06,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 13:18:06,624 INFO L276 IsEmpty]: Start isEmpty. Operand 8379 states and 38406 transitions. [2020-09-15 13:18:06,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 13:18:06,625 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:18:06,625 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:18:06,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-09-15 13:18:06,625 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]=== [2020-09-15 13:18:06,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:18:06,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1976577008, now seen corresponding path program 2 times [2020-09-15 13:18:06,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:18:06,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139628978] [2020-09-15 13:18:06,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:18:06,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:18:06,912 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2020-09-15 13:18:06,925 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 13:18:06,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139628978] [2020-09-15 13:18:06,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:18:06,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 13:18:06,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795544329] [2020-09-15 13:18:06,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 13:18:06,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:18:06,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 13:18:06,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 13:18:06,928 INFO L87 Difference]: Start difference. First operand 8379 states and 38406 transitions. Second operand 7 states. [2020-09-15 13:18:07,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:18:07,377 INFO L93 Difference]: Finished difference Result 19555 states and 78564 transitions. [2020-09-15 13:18:07,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 13:18:07,378 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-15 13:18:07,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:18:07,445 INFO L225 Difference]: With dead ends: 19555 [2020-09-15 13:18:07,445 INFO L226 Difference]: Without dead ends: 19530 [2020-09-15 13:18:07,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-15 13:18:07,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19530 states. [2020-09-15 13:18:07,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19530 to 8317. [2020-09-15 13:18:07,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8317 states. [2020-09-15 13:18:07,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8317 states to 8317 states and 38184 transitions. [2020-09-15 13:18:07,861 INFO L78 Accepts]: Start accepts. Automaton has 8317 states and 38184 transitions. Word has length 19 [2020-09-15 13:18:07,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:18:07,861 INFO L479 AbstractCegarLoop]: Abstraction has 8317 states and 38184 transitions. [2020-09-15 13:18:07,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 13:18:07,862 INFO L276 IsEmpty]: Start isEmpty. Operand 8317 states and 38184 transitions. [2020-09-15 13:18:07,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 13:18:07,863 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:18:07,863 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:18:07,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-09-15 13:18:07,864 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]=== [2020-09-15 13:18:07,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:18:07,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1389591796, now seen corresponding path program 1 times [2020-09-15 13:18:07,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:18:07,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892994002] [2020-09-15 13:18:07,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:18:07,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:18:07,969 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 13:18:07,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892994002] [2020-09-15 13:18:07,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387204314] [2020-09-15 13:18:07,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:18:08,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:18:08,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 13:18:08,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:18:08,191 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 13:18:08,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:18:08,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 13:18:08,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244366295] [2020-09-15 13:18:08,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 13:18:08,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:18:08,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 13:18:08,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 13:18:08,193 INFO L87 Difference]: Start difference. First operand 8317 states and 38184 transitions. Second operand 16 states. [2020-09-15 13:18:09,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:18:09,451 INFO L93 Difference]: Finished difference Result 26969 states and 101544 transitions. [2020-09-15 13:18:09,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:18:09,451 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-15 13:18:09,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:18:09,547 INFO L225 Difference]: With dead ends: 26969 [2020-09-15 13:18:09,548 INFO L226 Difference]: Without dead ends: 26957 [2020-09-15 13:18:09,548 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 [2020-09-15 13:18:09,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26957 states. [2020-09-15 13:18:10,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26957 to 8204. [2020-09-15 13:18:10,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8204 states. [2020-09-15 13:18:10,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8204 states to 8204 states and 37628 transitions. [2020-09-15 13:18:10,296 INFO L78 Accepts]: Start accepts. Automaton has 8204 states and 37628 transitions. Word has length 21 [2020-09-15 13:18:10,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:18:10,296 INFO L479 AbstractCegarLoop]: Abstraction has 8204 states and 37628 transitions. [2020-09-15 13:18:10,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 13:18:10,296 INFO L276 IsEmpty]: Start isEmpty. Operand 8204 states and 37628 transitions. [2020-09-15 13:18:10,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 13:18:10,298 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:18:10,298 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:18:10,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:18:10,500 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]=== [2020-09-15 13:18:10,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:18:10,501 INFO L82 PathProgramCache]: Analyzing trace with hash 184946636, now seen corresponding path program 2 times [2020-09-15 13:18:10,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:18:10,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544792210] [2020-09-15 13:18:10,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:18:10,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:18:10,624 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-15 13:18:10,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544792210] [2020-09-15 13:18:10,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601868306] [2020-09-15 13:18:10,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:18:10,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 13:18:10,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 13:18:10,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 13:18:10,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:18:10,862 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-15 13:18:10,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:18:10,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 13:18:10,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835292652] [2020-09-15 13:18:10,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 13:18:10,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:18:10,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 13:18:10,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 13:18:10,865 INFO L87 Difference]: Start difference. First operand 8204 states and 37628 transitions. Second operand 16 states. [2020-09-15 13:18:12,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:18:12,069 INFO L93 Difference]: Finished difference Result 26661 states and 100277 transitions. [2020-09-15 13:18:12,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:18:12,070 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-15 13:18:12,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:18:12,166 INFO L225 Difference]: With dead ends: 26661 [2020-09-15 13:18:12,166 INFO L226 Difference]: Without dead ends: 26645 [2020-09-15 13:18:12,167 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 [2020-09-15 13:18:12,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26645 states. [2020-09-15 13:18:12,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26645 to 8091. [2020-09-15 13:18:12,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8091 states. [2020-09-15 13:18:12,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8091 states to 8091 states and 37076 transitions. [2020-09-15 13:18:12,643 INFO L78 Accepts]: Start accepts. Automaton has 8091 states and 37076 transitions. Word has length 21 [2020-09-15 13:18:12,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:18:12,643 INFO L479 AbstractCegarLoop]: Abstraction has 8091 states and 37076 transitions. [2020-09-15 13:18:12,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 13:18:12,643 INFO L276 IsEmpty]: Start isEmpty. Operand 8091 states and 37076 transitions. [2020-09-15 13:18:12,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 13:18:12,645 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:18:12,645 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:18:12,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-09-15 13:18:12,846 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]=== [2020-09-15 13:18:12,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:18:12,846 INFO L82 PathProgramCache]: Analyzing trace with hash -231570740, now seen corresponding path program 3 times [2020-09-15 13:18:12,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:18:12,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816758763] [2020-09-15 13:18:12,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:18:12,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:18:12,948 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 13:18:12,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816758763] [2020-09-15 13:18:12,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850575240] [2020-09-15 13:18:12,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:18:13,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-15 13:18:13,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 13:18:13,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 13:18:13,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:18:13,216 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 13:18:13,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:18:13,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 13:18:13,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535653074] [2020-09-15 13:18:13,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 13:18:13,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:18:13,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 13:18:13,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 13:18:13,218 INFO L87 Difference]: Start difference. First operand 8091 states and 37076 transitions. Second operand 16 states. [2020-09-15 13:18:13,696 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-09-15 13:18:14,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:18:14,538 INFO L93 Difference]: Finished difference Result 26686 states and 100402 transitions. [2020-09-15 13:18:14,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:18:14,538 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-15 13:18:14,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:18:14,623 INFO L225 Difference]: With dead ends: 26686 [2020-09-15 13:18:14,623 INFO L226 Difference]: Without dead ends: 26674 [2020-09-15 13:18:14,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 13:18:14,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26674 states. [2020-09-15 13:18:15,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26674 to 7861. [2020-09-15 13:18:15,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7861 states. [2020-09-15 13:18:15,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7861 states to 7861 states and 36066 transitions. [2020-09-15 13:18:15,112 INFO L78 Accepts]: Start accepts. Automaton has 7861 states and 36066 transitions. Word has length 21 [2020-09-15 13:18:15,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:18:15,112 INFO L479 AbstractCegarLoop]: Abstraction has 7861 states and 36066 transitions. [2020-09-15 13:18:15,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 13:18:15,112 INFO L276 IsEmpty]: Start isEmpty. Operand 7861 states and 36066 transitions. [2020-09-15 13:18:15,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 13:18:15,113 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:18:15,114 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:18:15,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:18:15,314 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]=== [2020-09-15 13:18:15,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:18:15,315 INFO L82 PathProgramCache]: Analyzing trace with hash -168366002, now seen corresponding path program 4 times [2020-09-15 13:18:15,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:18:15,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380588389] [2020-09-15 13:18:15,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:18:15,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:18:15,414 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 13:18:15,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380588389] [2020-09-15 13:18:15,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620188894] [2020-09-15 13:18:15,415 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:18:15,501 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 13:18:15,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 13:18:15,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 13:18:15,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:18:15,616 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 13:18:15,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:18:15,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 13:18:15,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906994299] [2020-09-15 13:18:15,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 13:18:15,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:18:15,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 13:18:15,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 13:18:15,618 INFO L87 Difference]: Start difference. First operand 7861 states and 36066 transitions. Second operand 16 states. [2020-09-15 13:18:16,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:18:16,901 INFO L93 Difference]: Finished difference Result 26489 states and 99650 transitions. [2020-09-15 13:18:16,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:18:16,901 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-15 13:18:16,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:18:16,999 INFO L225 Difference]: With dead ends: 26489 [2020-09-15 13:18:16,999 INFO L226 Difference]: Without dead ends: 26473 [2020-09-15 13:18:17,000 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 [2020-09-15 13:18:17,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26473 states. [2020-09-15 13:18:17,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26473 to 7748. [2020-09-15 13:18:17,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7748 states. [2020-09-15 13:18:17,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7748 states to 7748 states and 35514 transitions. [2020-09-15 13:18:17,757 INFO L78 Accepts]: Start accepts. Automaton has 7748 states and 35514 transitions. Word has length 21 [2020-09-15 13:18:17,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:18:17,758 INFO L479 AbstractCegarLoop]: Abstraction has 7748 states and 35514 transitions. [2020-09-15 13:18:17,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 13:18:17,758 INFO L276 IsEmpty]: Start isEmpty. Operand 7748 states and 35514 transitions. [2020-09-15 13:18:17,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 13:18:17,759 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:18:17,759 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:18:17,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-09-15 13:18:17,960 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]=== [2020-09-15 13:18:17,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:18:17,961 INFO L82 PathProgramCache]: Analyzing trace with hash 210203517, now seen corresponding path program 1 times [2020-09-15 13:18:17,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:18:17,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130725410] [2020-09-15 13:18:17,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:18:17,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:18:18,026 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 13:18:18,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130725410] [2020-09-15 13:18:18,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:18:18,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 13:18:18,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029934950] [2020-09-15 13:18:18,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 13:18:18,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:18:18,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 13:18:18,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 13:18:18,029 INFO L87 Difference]: Start difference. First operand 7748 states and 35514 transitions. Second operand 5 states. [2020-09-15 13:18:18,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:18:18,216 INFO L93 Difference]: Finished difference Result 13251 states and 57501 transitions. [2020-09-15 13:18:18,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 13:18:18,217 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-15 13:18:18,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:18:18,265 INFO L225 Difference]: With dead ends: 13251 [2020-09-15 13:18:18,265 INFO L226 Difference]: Without dead ends: 13220 [2020-09-15 13:18:18,266 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 [2020-09-15 13:18:18,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13220 states. [2020-09-15 13:18:18,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13220 to 9255. [2020-09-15 13:18:18,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9255 states. [2020-09-15 13:18:18,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9255 states to 9255 states and 42368 transitions. [2020-09-15 13:18:18,612 INFO L78 Accepts]: Start accepts. Automaton has 9255 states and 42368 transitions. Word has length 21 [2020-09-15 13:18:18,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:18:18,612 INFO L479 AbstractCegarLoop]: Abstraction has 9255 states and 42368 transitions. [2020-09-15 13:18:18,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 13:18:18,613 INFO L276 IsEmpty]: Start isEmpty. Operand 9255 states and 42368 transitions. [2020-09-15 13:18:18,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 13:18:18,614 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:18:18,614 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:18:18,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-09-15 13:18:18,614 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]=== [2020-09-15 13:18:18,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:18:18,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1134578958, now seen corresponding path program 5 times [2020-09-15 13:18:18,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:18:18,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759468611] [2020-09-15 13:18:18,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:18:18,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:18:18,716 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 13:18:18,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759468611] [2020-09-15 13:18:18,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:18:18,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 13:18:18,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283684086] [2020-09-15 13:18:18,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 13:18:18,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:18:18,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 13:18:18,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 13:18:18,719 INFO L87 Difference]: Start difference. First operand 9255 states and 42368 transitions. Second operand 9 states. [2020-09-15 13:18:19,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:18:19,768 INFO L93 Difference]: Finished difference Result 29788 states and 113841 transitions. [2020-09-15 13:18:19,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:18:19,769 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-15 13:18:19,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:18:19,867 INFO L225 Difference]: With dead ends: 29788 [2020-09-15 13:18:19,867 INFO L226 Difference]: Without dead ends: 29770 [2020-09-15 13:18:19,867 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 [2020-09-15 13:18:20,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29770 states. [2020-09-15 13:18:20,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29770 to 8964. [2020-09-15 13:18:20,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8964 states. [2020-09-15 13:18:20,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8964 states to 8964 states and 41031 transitions. [2020-09-15 13:18:20,417 INFO L78 Accepts]: Start accepts. Automaton has 8964 states and 41031 transitions. Word has length 21 [2020-09-15 13:18:20,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:18:20,417 INFO L479 AbstractCegarLoop]: Abstraction has 8964 states and 41031 transitions. [2020-09-15 13:18:20,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 13:18:20,417 INFO L276 IsEmpty]: Start isEmpty. Operand 8964 states and 41031 transitions. [2020-09-15 13:18:20,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 13:18:20,419 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:18:20,419 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:18:20,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-09-15 13:18:20,419 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]=== [2020-09-15 13:18:20,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:18:20,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1114967118, now seen corresponding path program 6 times [2020-09-15 13:18:20,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:18:20,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661553105] [2020-09-15 13:18:20,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:18:20,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:18:20,521 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 13:18:20,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661553105] [2020-09-15 13:18:20,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:18:20,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 13:18:20,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276716472] [2020-09-15 13:18:20,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 13:18:20,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:18:20,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 13:18:20,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 13:18:20,524 INFO L87 Difference]: Start difference. First operand 8964 states and 41031 transitions. Second operand 9 states. [2020-09-15 13:18:21,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:18:21,777 INFO L93 Difference]: Finished difference Result 29379 states and 112099 transitions. [2020-09-15 13:18:21,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:18:21,778 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-15 13:18:21,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:18:21,878 INFO L225 Difference]: With dead ends: 29379 [2020-09-15 13:18:21,878 INFO L226 Difference]: Without dead ends: 29356 [2020-09-15 13:18:21,879 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 [2020-09-15 13:18:22,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29356 states. [2020-09-15 13:18:22,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29356 to 8573. [2020-09-15 13:18:22,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8573 states. [2020-09-15 13:18:22,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8573 states to 8573 states and 39353 transitions. [2020-09-15 13:18:22,451 INFO L78 Accepts]: Start accepts. Automaton has 8573 states and 39353 transitions. Word has length 21 [2020-09-15 13:18:22,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:18:22,451 INFO L479 AbstractCegarLoop]: Abstraction has 8573 states and 39353 transitions. [2020-09-15 13:18:22,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 13:18:22,451 INFO L276 IsEmpty]: Start isEmpty. Operand 8573 states and 39353 transitions. [2020-09-15 13:18:22,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 13:18:22,453 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:18:22,454 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:18:22,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-09-15 13:18:22,454 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]=== [2020-09-15 13:18:22,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:18:22,454 INFO L82 PathProgramCache]: Analyzing trace with hash 715669452, now seen corresponding path program 1 times [2020-09-15 13:18:22,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:18:22,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623213354] [2020-09-15 13:18:22,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:18:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:18:22,536 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 13:18:22,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623213354] [2020-09-15 13:18:22,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951832403] [2020-09-15 13:18:22,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:18:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:18:22,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 13:18:22,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:18:22,733 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 13:18:22,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:18:22,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 13:18:22,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003128608] [2020-09-15 13:18:22,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 13:18:22,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:18:22,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 13:18:22,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 13:18:22,735 INFO L87 Difference]: Start difference. First operand 8573 states and 39353 transitions. Second operand 12 states. [2020-09-15 13:18:23,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:18:23,255 INFO L93 Difference]: Finished difference Result 19727 states and 80274 transitions. [2020-09-15 13:18:23,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 13:18:23,256 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-15 13:18:23,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:18:23,322 INFO L225 Difference]: With dead ends: 19727 [2020-09-15 13:18:23,322 INFO L226 Difference]: Without dead ends: 19703 [2020-09-15 13:18:23,323 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 [2020-09-15 13:18:23,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19703 states. [2020-09-15 13:18:23,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19703 to 8847. [2020-09-15 13:18:23,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8847 states. [2020-09-15 13:18:23,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8847 states to 8847 states and 40495 transitions. [2020-09-15 13:18:23,741 INFO L78 Accepts]: Start accepts. Automaton has 8847 states and 40495 transitions. Word has length 23 [2020-09-15 13:18:23,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:18:23,741 INFO L479 AbstractCegarLoop]: Abstraction has 8847 states and 40495 transitions. [2020-09-15 13:18:23,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 13:18:23,741 INFO L276 IsEmpty]: Start isEmpty. Operand 8847 states and 40495 transitions. [2020-09-15 13:18:23,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 13:18:23,743 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:18:23,744 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:18:23,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-09-15 13:18:23,945 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]=== [2020-09-15 13:18:23,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:18:23,946 INFO L82 PathProgramCache]: Analyzing trace with hash 504272987, now seen corresponding path program 1 times [2020-09-15 13:18:23,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:18:23,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044987237] [2020-09-15 13:18:23,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:18:23,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:18:24,034 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 13:18:24,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044987237] [2020-09-15 13:18:24,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748851289] [2020-09-15 13:18:24,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:18:24,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:18:24,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 13:18:24,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:18:24,221 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 13:18:24,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:18:24,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 13:18:24,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247599082] [2020-09-15 13:18:24,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 13:18:24,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:18:24,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 13:18:24,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 13:18:24,223 INFO L87 Difference]: Start difference. First operand 8847 states and 40495 transitions. Second operand 12 states. [2020-09-15 13:18:24,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:18:24,724 INFO L93 Difference]: Finished difference Result 20694 states and 84261 transitions. [2020-09-15 13:18:24,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 13:18:24,725 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-15 13:18:24,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:18:24,794 INFO L225 Difference]: With dead ends: 20694 [2020-09-15 13:18:24,794 INFO L226 Difference]: Without dead ends: 20666 [2020-09-15 13:18:24,795 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 [2020-09-15 13:18:24,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20666 states. [2020-09-15 13:18:25,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20666 to 9115. [2020-09-15 13:18:25,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9115 states. [2020-09-15 13:18:25,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9115 states to 9115 states and 41679 transitions. [2020-09-15 13:18:25,457 INFO L78 Accepts]: Start accepts. Automaton has 9115 states and 41679 transitions. Word has length 23 [2020-09-15 13:18:25,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:18:25,457 INFO L479 AbstractCegarLoop]: Abstraction has 9115 states and 41679 transitions. [2020-09-15 13:18:25,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 13:18:25,457 INFO L276 IsEmpty]: Start isEmpty. Operand 9115 states and 41679 transitions. [2020-09-15 13:18:25,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 13:18:25,460 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:18:25,460 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:18:25,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:18:25,661 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]=== [2020-09-15 13:18:25,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:18:25,661 INFO L82 PathProgramCache]: Analyzing trace with hash 591685125, now seen corresponding path program 1 times [2020-09-15 13:18:25,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:18:25,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689786849] [2020-09-15 13:18:25,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:18:25,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:18:25,739 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 13:18:25,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689786849] [2020-09-15 13:18:25,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580428483] [2020-09-15 13:18:25,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:18:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:18:25,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 13:18:25,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:18:25,931 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 13:18:25,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:18:25,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 13:18:25,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52760987] [2020-09-15 13:18:25,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 13:18:25,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:18:25,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 13:18:25,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 13:18:25,933 INFO L87 Difference]: Start difference. First operand 9115 states and 41679 transitions. Second operand 12 states. [2020-09-15 13:18:26,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:18:26,449 INFO L93 Difference]: Finished difference Result 21396 states and 87360 transitions. [2020-09-15 13:18:26,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 13:18:26,450 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-15 13:18:26,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:18:26,522 INFO L225 Difference]: With dead ends: 21396 [2020-09-15 13:18:26,522 INFO L226 Difference]: Without dead ends: 21359 [2020-09-15 13:18:26,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-15 13:18:26,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21359 states. [2020-09-15 13:18:26,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21359 to 9320. [2020-09-15 13:18:26,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9320 states. [2020-09-15 13:18:26,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9320 states to 9320 states and 42648 transitions. [2020-09-15 13:18:26,962 INFO L78 Accepts]: Start accepts. Automaton has 9320 states and 42648 transitions. Word has length 23 [2020-09-15 13:18:26,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:18:26,962 INFO L479 AbstractCegarLoop]: Abstraction has 9320 states and 42648 transitions. [2020-09-15 13:18:26,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 13:18:26,963 INFO L276 IsEmpty]: Start isEmpty. Operand 9320 states and 42648 transitions. [2020-09-15 13:18:26,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 13:18:26,965 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:18:26,965 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:18:27,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2020-09-15 13:18:27,166 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]=== [2020-09-15 13:18:27,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:18:27,167 INFO L82 PathProgramCache]: Analyzing trace with hash 142124187, now seen corresponding path program 2 times [2020-09-15 13:18:27,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:18:27,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439877628] [2020-09-15 13:18:27,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:18:27,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:18:27,248 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 13:18:27,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439877628] [2020-09-15 13:18:27,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:18:27,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 13:18:27,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152902254] [2020-09-15 13:18:27,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 13:18:27,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:18:27,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 13:18:27,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 13:18:27,251 INFO L87 Difference]: Start difference. First operand 9320 states and 42648 transitions. Second operand 7 states. [2020-09-15 13:18:27,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:18:27,732 INFO L93 Difference]: Finished difference Result 21489 states and 87752 transitions. [2020-09-15 13:18:27,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 13:18:27,732 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-15 13:18:27,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:18:27,811 INFO L225 Difference]: With dead ends: 21489 [2020-09-15 13:18:27,812 INFO L226 Difference]: Without dead ends: 21452 [2020-09-15 13:18:27,812 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 [2020-09-15 13:18:27,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21452 states. [2020-09-15 13:18:28,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21452 to 9401. [2020-09-15 13:18:28,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9401 states. [2020-09-15 13:18:28,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9401 states to 9401 states and 43010 transitions. [2020-09-15 13:18:28,262 INFO L78 Accepts]: Start accepts. Automaton has 9401 states and 43010 transitions. Word has length 23 [2020-09-15 13:18:28,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:18:28,263 INFO L479 AbstractCegarLoop]: Abstraction has 9401 states and 43010 transitions. [2020-09-15 13:18:28,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 13:18:28,263 INFO L276 IsEmpty]: Start isEmpty. Operand 9401 states and 43010 transitions. [2020-09-15 13:18:28,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 13:18:28,265 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:18:28,266 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:18:28,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-09-15 13:18:28,266 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]=== [2020-09-15 13:18:28,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:18:28,266 INFO L82 PathProgramCache]: Analyzing trace with hash 142117429, now seen corresponding path program 2 times [2020-09-15 13:18:28,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:18:28,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161358897] [2020-09-15 13:18:28,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:18:28,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:18:28,360 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 13:18:28,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161358897] [2020-09-15 13:18:28,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:18:28,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 13:18:28,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041337300] [2020-09-15 13:18:28,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 13:18:28,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:18:28,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 13:18:28,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 13:18:28,362 INFO L87 Difference]: Start difference. First operand 9401 states and 43010 transitions. Second operand 7 states. [2020-09-15 13:18:28,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:18:28,977 INFO L93 Difference]: Finished difference Result 21198 states and 86437 transitions. [2020-09-15 13:18:28,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 13:18:28,978 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-15 13:18:28,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:18:29,087 INFO L225 Difference]: With dead ends: 21198 [2020-09-15 13:18:29,087 INFO L226 Difference]: Without dead ends: 21161 [2020-09-15 13:18:29,089 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 [2020-09-15 13:18:29,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21161 states. [2020-09-15 13:18:29,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21161 to 9396. [2020-09-15 13:18:29,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9396 states. [2020-09-15 13:18:29,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9396 states to 9396 states and 42985 transitions. [2020-09-15 13:18:29,818 INFO L78 Accepts]: Start accepts. Automaton has 9396 states and 42985 transitions. Word has length 23 [2020-09-15 13:18:29,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:18:29,819 INFO L479 AbstractCegarLoop]: Abstraction has 9396 states and 42985 transitions. [2020-09-15 13:18:29,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 13:18:29,819 INFO L276 IsEmpty]: Start isEmpty. Operand 9396 states and 42985 transitions. [2020-09-15 13:18:29,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 13:18:29,821 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:18:29,821 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:18:29,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-09-15 13:18:29,822 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]=== [2020-09-15 13:18:29,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:18:29,822 INFO L82 PathProgramCache]: Analyzing trace with hash 142103758, now seen corresponding path program 2 times [2020-09-15 13:18:29,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:18:29,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042498768] [2020-09-15 13:18:29,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:18:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:18:29,899 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 13:18:29,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042498768] [2020-09-15 13:18:29,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:18:29,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 13:18:29,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843685936] [2020-09-15 13:18:29,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 13:18:29,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:18:29,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 13:18:29,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 13:18:29,903 INFO L87 Difference]: Start difference. First operand 9396 states and 42985 transitions. Second operand 7 states. [2020-09-15 13:18:30,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:18:30,382 INFO L93 Difference]: Finished difference Result 21067 states and 85734 transitions. [2020-09-15 13:18:30,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 13:18:30,382 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-15 13:18:30,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:18:30,458 INFO L225 Difference]: With dead ends: 21067 [2020-09-15 13:18:30,458 INFO L226 Difference]: Without dead ends: 21030 [2020-09-15 13:18:30,458 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 [2020-09-15 13:18:30,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21030 states. [2020-09-15 13:18:30,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21030 to 9426. [2020-09-15 13:18:30,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9426 states. [2020-09-15 13:18:30,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9426 states to 9426 states and 43057 transitions. [2020-09-15 13:18:30,895 INFO L78 Accepts]: Start accepts. Automaton has 9426 states and 43057 transitions. Word has length 23 [2020-09-15 13:18:30,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:18:30,895 INFO L479 AbstractCegarLoop]: Abstraction has 9426 states and 43057 transitions. [2020-09-15 13:18:30,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 13:18:30,895 INFO L276 IsEmpty]: Start isEmpty. Operand 9426 states and 43057 transitions. [2020-09-15 13:18:30,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 13:18:30,899 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:18:30,899 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:18:30,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-09-15 13:18:30,900 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]=== [2020-09-15 13:18:30,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:18:30,900 INFO L82 PathProgramCache]: Analyzing trace with hash 925732074, now seen corresponding path program 1 times [2020-09-15 13:18:30,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:18:30,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019938418] [2020-09-15 13:18:30,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:18:30,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:18:31,018 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 13:18:31,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019938418] [2020-09-15 13:18:31,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876633586] [2020-09-15 13:18:31,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:18:31,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:18:31,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 13:18:31,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:18:31,255 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 13:18:31,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:18:31,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 13:18:31,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010391595] [2020-09-15 13:18:31,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 13:18:31,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:18:31,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 13:18:31,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 13:18:31,257 INFO L87 Difference]: Start difference. First operand 9426 states and 43057 transitions. Second operand 16 states. [2020-09-15 13:18:32,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:18:32,698 INFO L93 Difference]: Finished difference Result 30145 states and 115754 transitions. [2020-09-15 13:18:32,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:18:32,698 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 13:18:32,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:18:32,799 INFO L225 Difference]: With dead ends: 30145 [2020-09-15 13:18:32,799 INFO L226 Difference]: Without dead ends: 30125 [2020-09-15 13:18:32,800 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 [2020-09-15 13:18:32,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30125 states. [2020-09-15 13:18:33,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30125 to 9338. [2020-09-15 13:18:33,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9338 states. [2020-09-15 13:18:33,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9338 states to 9338 states and 42582 transitions. [2020-09-15 13:18:33,370 INFO L78 Accepts]: Start accepts. Automaton has 9338 states and 42582 transitions. Word has length 25 [2020-09-15 13:18:33,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:18:33,371 INFO L479 AbstractCegarLoop]: Abstraction has 9338 states and 42582 transitions. [2020-09-15 13:18:33,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 13:18:33,371 INFO L276 IsEmpty]: Start isEmpty. Operand 9338 states and 42582 transitions. [2020-09-15 13:18:33,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 13:18:33,375 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:18:33,375 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:18:33,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-09-15 13:18:33,576 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]=== [2020-09-15 13:18:33,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:18:33,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1013144212, now seen corresponding path program 1 times [2020-09-15 13:18:33,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:18:33,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921489634] [2020-09-15 13:18:33,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:18:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:18:33,687 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 13:18:33,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921489634] [2020-09-15 13:18:33,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958911965] [2020-09-15 13:18:33,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:18:33,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:18:33,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 13:18:33,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:18:33,920 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 13:18:33,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:18:33,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 13:18:33,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431278709] [2020-09-15 13:18:33,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 13:18:33,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:18:33,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 13:18:33,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 13:18:33,923 INFO L87 Difference]: Start difference. First operand 9338 states and 42582 transitions. Second operand 16 states. [2020-09-15 13:18:35,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:18:35,356 INFO L93 Difference]: Finished difference Result 29696 states and 113916 transitions. [2020-09-15 13:18:35,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:18:35,357 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 13:18:35,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:18:35,459 INFO L225 Difference]: With dead ends: 29696 [2020-09-15 13:18:35,460 INFO L226 Difference]: Without dead ends: 29676 [2020-09-15 13:18:35,460 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 [2020-09-15 13:18:35,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29676 states. [2020-09-15 13:18:35,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29676 to 9291. [2020-09-15 13:18:35,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9291 states. [2020-09-15 13:18:36,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9291 states to 9291 states and 42295 transitions. [2020-09-15 13:18:36,011 INFO L78 Accepts]: Start accepts. Automaton has 9291 states and 42295 transitions. Word has length 25 [2020-09-15 13:18:36,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:18:36,011 INFO L479 AbstractCegarLoop]: Abstraction has 9291 states and 42295 transitions. [2020-09-15 13:18:36,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 13:18:36,011 INFO L276 IsEmpty]: Start isEmpty. Operand 9291 states and 42295 transitions. [2020-09-15 13:18:36,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 13:18:36,015 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:18:36,015 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:18:36,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-09-15 13:18:36,216 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]=== [2020-09-15 13:18:36,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:18:36,218 INFO L82 PathProgramCache]: Analyzing trace with hash 563583274, now seen corresponding path program 2 times [2020-09-15 13:18:36,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:18:36,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878285308] [2020-09-15 13:18:36,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:18:36,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:18:36,320 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 13:18:36,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878285308] [2020-09-15 13:18:36,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072479357] [2020-09-15 13:18:36,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:18:36,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 13:18:36,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 13:18:36,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 13:18:36,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:18:36,557 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 13:18:36,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:18:36,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 13:18:36,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601078190] [2020-09-15 13:18:36,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 13:18:36,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:18:36,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 13:18:36,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 13:18:36,559 INFO L87 Difference]: Start difference. First operand 9291 states and 42295 transitions. Second operand 16 states. [2020-09-15 13:18:37,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:18:37,827 INFO L93 Difference]: Finished difference Result 29267 states and 112142 transitions. [2020-09-15 13:18:37,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:18:37,827 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 13:18:37,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:18:37,931 INFO L225 Difference]: With dead ends: 29267 [2020-09-15 13:18:37,931 INFO L226 Difference]: Without dead ends: 29245 [2020-09-15 13:18:37,931 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 [2020-09-15 13:18:38,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29245 states. [2020-09-15 13:18:38,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29245 to 9288. [2020-09-15 13:18:38,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9288 states. [2020-09-15 13:18:38,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9288 states to 9288 states and 42242 transitions. [2020-09-15 13:18:38,491 INFO L78 Accepts]: Start accepts. Automaton has 9288 states and 42242 transitions. Word has length 25 [2020-09-15 13:18:38,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:18:38,491 INFO L479 AbstractCegarLoop]: Abstraction has 9288 states and 42242 transitions. [2020-09-15 13:18:38,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 13:18:38,492 INFO L276 IsEmpty]: Start isEmpty. Operand 9288 states and 42242 transitions. [2020-09-15 13:18:38,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 13:18:38,496 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:18:38,496 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:18:38,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-09-15 13:18:38,697 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]=== [2020-09-15 13:18:38,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:18:38,697 INFO L82 PathProgramCache]: Analyzing trace with hash 563576516, now seen corresponding path program 2 times [2020-09-15 13:18:38,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:18:38,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988759772] [2020-09-15 13:18:38,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:18:38,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:18:38,806 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 13:18:38,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988759772] [2020-09-15 13:18:38,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873000903] [2020-09-15 13:18:38,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:18:38,912 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 13:18:38,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 13:18:38,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 13:18:38,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:18:39,044 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 13:18:39,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:18:39,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 13:18:39,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696201272] [2020-09-15 13:18:39,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 13:18:39,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:18:39,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 13:18:39,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 13:18:39,046 INFO L87 Difference]: Start difference. First operand 9288 states and 42242 transitions. Second operand 16 states. [2020-09-15 13:18:40,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:18:40,473 INFO L93 Difference]: Finished difference Result 28920 states and 110796 transitions. [2020-09-15 13:18:40,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:18:40,474 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 13:18:40,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:18:40,581 INFO L225 Difference]: With dead ends: 28920 [2020-09-15 13:18:40,582 INFO L226 Difference]: Without dead ends: 28898 [2020-09-15 13:18:40,582 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 [2020-09-15 13:18:40,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28898 states. [2020-09-15 13:18:41,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28898 to 9176. [2020-09-15 13:18:41,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9176 states. [2020-09-15 13:18:41,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9176 states to 9176 states and 41695 transitions. [2020-09-15 13:18:41,326 INFO L78 Accepts]: Start accepts. Automaton has 9176 states and 41695 transitions. Word has length 25 [2020-09-15 13:18:41,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:18:41,326 INFO L479 AbstractCegarLoop]: Abstraction has 9176 states and 41695 transitions. [2020-09-15 13:18:41,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 13:18:41,326 INFO L276 IsEmpty]: Start isEmpty. Operand 9176 states and 41695 transitions. [2020-09-15 13:18:41,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 13:18:41,330 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:18:41,331 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:18:41,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:18:41,532 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]=== [2020-09-15 13:18:41,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:18:41,532 INFO L82 PathProgramCache]: Analyzing trace with hash -2052215638, now seen corresponding path program 3 times [2020-09-15 13:18:41,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:18:41,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295391997] [2020-09-15 13:18:41,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:18:41,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:18:41,655 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-15 13:18:41,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295391997] [2020-09-15 13:18:41,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866331169] [2020-09-15 13:18:41,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:18:41,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-09-15 13:18:41,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 13:18:41,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 13:18:41,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:18:41,912 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-15 13:18:41,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:18:41,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 13:18:41,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067982499] [2020-09-15 13:18:41,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 13:18:41,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:18:41,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 13:18:41,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 13:18:41,915 INFO L87 Difference]: Start difference. First operand 9176 states and 41695 transitions. Second operand 16 states. [2020-09-15 13:18:43,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:18:43,137 INFO L93 Difference]: Finished difference Result 29038 states and 111216 transitions. [2020-09-15 13:18:43,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:18:43,138 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 13:18:43,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:18:43,236 INFO L225 Difference]: With dead ends: 29038 [2020-09-15 13:18:43,237 INFO L226 Difference]: Without dead ends: 29018 [2020-09-15 13:18:43,237 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 [2020-09-15 13:18:43,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29018 states. [2020-09-15 13:18:43,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29018 to 9000. [2020-09-15 13:18:43,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9000 states. [2020-09-15 13:18:43,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9000 states to 9000 states and 40897 transitions. [2020-09-15 13:18:43,782 INFO L78 Accepts]: Start accepts. Automaton has 9000 states and 40897 transitions. Word has length 25 [2020-09-15 13:18:43,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:18:43,782 INFO L479 AbstractCegarLoop]: Abstraction has 9000 states and 40897 transitions. [2020-09-15 13:18:43,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 13:18:43,783 INFO L276 IsEmpty]: Start isEmpty. Operand 9000 states and 40897 transitions. [2020-09-15 13:18:43,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 13:18:43,786 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:18:43,786 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:18:43,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-09-15 13:18:43,987 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]=== [2020-09-15 13:18:43,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:18:43,988 INFO L82 PathProgramCache]: Analyzing trace with hash -275395741, now seen corresponding path program 1 times [2020-09-15 13:18:43,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:18:43,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147699649] [2020-09-15 13:18:43,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:18:43,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:18:44,095 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-15 13:18:44,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147699649] [2020-09-15 13:18:44,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948824656] [2020-09-15 13:18:44,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:18:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:18:44,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 13:18:44,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:18:44,319 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-15 13:18:44,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:18:44,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 13:18:44,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795867529] [2020-09-15 13:18:44,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 13:18:44,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:18:44,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 13:18:44,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 13:18:44,321 INFO L87 Difference]: Start difference. First operand 9000 states and 40897 transitions. Second operand 16 states. [2020-09-15 13:18:45,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:18:45,726 INFO L93 Difference]: Finished difference Result 29417 states and 113034 transitions. [2020-09-15 13:18:45,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:18:45,726 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 13:18:45,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:18:45,830 INFO L225 Difference]: With dead ends: 29417 [2020-09-15 13:18:45,830 INFO L226 Difference]: Without dead ends: 29397 [2020-09-15 13:18:45,831 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 [2020-09-15 13:18:45,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29397 states. [2020-09-15 13:18:46,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29397 to 8990. [2020-09-15 13:18:46,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8990 states. [2020-09-15 13:18:46,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8990 states to 8990 states and 40786 transitions. [2020-09-15 13:18:46,372 INFO L78 Accepts]: Start accepts. Automaton has 8990 states and 40786 transitions. Word has length 25 [2020-09-15 13:18:46,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:18:46,372 INFO L479 AbstractCegarLoop]: Abstraction has 8990 states and 40786 transitions. [2020-09-15 13:18:46,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 13:18:46,373 INFO L276 IsEmpty]: Start isEmpty. Operand 8990 states and 40786 transitions. [2020-09-15 13:18:46,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 13:18:46,377 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:18:46,377 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:18:46,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:18:46,578 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]=== [2020-09-15 13:18:46,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:18:46,579 INFO L82 PathProgramCache]: Analyzing trace with hash -724963437, now seen corresponding path program 2 times [2020-09-15 13:18:46,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:18:46,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758630161] [2020-09-15 13:18:46,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:18:46,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:18:46,688 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 13:18:46,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758630161] [2020-09-15 13:18:46,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865588955] [2020-09-15 13:18:46,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:18:46,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 13:18:46,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 13:18:46,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 13:18:46,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:18:47,000 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 13:18:47,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:18:47,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 13:18:47,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954036657] [2020-09-15 13:18:47,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 13:18:47,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:18:47,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 13:18:47,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 13:18:47,003 INFO L87 Difference]: Start difference. First operand 8990 states and 40786 transitions. Second operand 16 states. [2020-09-15 13:18:48,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:18:48,599 INFO L93 Difference]: Finished difference Result 29064 states and 111552 transitions. [2020-09-15 13:18:48,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:18:48,600 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 13:18:48,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:18:48,697 INFO L225 Difference]: With dead ends: 29064 [2020-09-15 13:18:48,697 INFO L226 Difference]: Without dead ends: 29037 [2020-09-15 13:18:48,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 13:18:48,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29037 states. [2020-09-15 13:18:49,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29037 to 8953. [2020-09-15 13:18:49,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8953 states. [2020-09-15 13:18:49,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8953 states to 8953 states and 40609 transitions. [2020-09-15 13:18:49,230 INFO L78 Accepts]: Start accepts. Automaton has 8953 states and 40609 transitions. Word has length 25 [2020-09-15 13:18:49,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:18:49,230 INFO L479 AbstractCegarLoop]: Abstraction has 8953 states and 40609 transitions. [2020-09-15 13:18:49,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 13:18:49,230 INFO L276 IsEmpty]: Start isEmpty. Operand 8953 states and 40609 transitions. [2020-09-15 13:18:49,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 13:18:49,236 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:18:49,236 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:18:49,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2020-09-15 13:18:49,437 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]=== [2020-09-15 13:18:49,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:18:49,437 INFO L82 PathProgramCache]: Analyzing trace with hash -724977108, now seen corresponding path program 4 times [2020-09-15 13:18:49,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:18:49,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120430211] [2020-09-15 13:18:49,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:18:49,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:18:49,543 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 13:18:49,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120430211] [2020-09-15 13:18:49,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997642732] [2020-09-15 13:18:49,544 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:18:49,646 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 13:18:49,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 13:18:49,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 13:18:49,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:18:49,779 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 13:18:49,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:18:49,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 13:18:49,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776440836] [2020-09-15 13:18:49,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 13:18:49,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:18:49,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 13:18:49,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 13:18:49,781 INFO L87 Difference]: Start difference. First operand 8953 states and 40609 transitions. Second operand 16 states. [2020-09-15 13:18:51,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:18:51,007 INFO L93 Difference]: Finished difference Result 28523 states and 109227 transitions. [2020-09-15 13:18:51,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:18:51,008 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 13:18:51,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:18:51,103 INFO L225 Difference]: With dead ends: 28523 [2020-09-15 13:18:51,103 INFO L226 Difference]: Without dead ends: 28501 [2020-09-15 13:18:51,103 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 [2020-09-15 13:18:51,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28501 states. [2020-09-15 13:18:51,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28501 to 8841. [2020-09-15 13:18:51,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8841 states. [2020-09-15 13:18:51,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8841 states to 8841 states and 40062 transitions. [2020-09-15 13:18:51,624 INFO L78 Accepts]: Start accepts. Automaton has 8841 states and 40062 transitions. Word has length 25 [2020-09-15 13:18:51,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:18:51,624 INFO L479 AbstractCegarLoop]: Abstraction has 8841 states and 40062 transitions. [2020-09-15 13:18:51,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 13:18:51,624 INFO L276 IsEmpty]: Start isEmpty. Operand 8841 states and 40062 transitions. [2020-09-15 13:18:51,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 13:18:51,629 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:18:51,629 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:18:51,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:18:51,830 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]=== [2020-09-15 13:18:51,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:18:51,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1969402905, now seen corresponding path program 3 times [2020-09-15 13:18:51,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:18:51,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049780860] [2020-09-15 13:18:51,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:18:51,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:18:51,935 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 13:18:51,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049780860] [2020-09-15 13:18:51,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681258196] [2020-09-15 13:18:51,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:18:52,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-15 13:18:52,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 13:18:52,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 13:18:52,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:18:52,164 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 13:18:52,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:18:52,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 13:18:52,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152699236] [2020-09-15 13:18:52,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 13:18:52,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:18:52,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 13:18:52,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 13:18:52,166 INFO L87 Difference]: Start difference. First operand 8841 states and 40062 transitions. Second operand 16 states. [2020-09-15 13:18:53,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:18:53,266 INFO L93 Difference]: Finished difference Result 28636 states and 109852 transitions. [2020-09-15 13:18:53,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:18:53,267 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 13:18:53,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:18:53,362 INFO L225 Difference]: With dead ends: 28636 [2020-09-15 13:18:53,363 INFO L226 Difference]: Without dead ends: 28616 [2020-09-15 13:18:53,363 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 [2020-09-15 13:18:53,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28616 states. [2020-09-15 13:18:53,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28616 to 8702. [2020-09-15 13:18:53,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8702 states. [2020-09-15 13:18:53,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8702 states to 8702 states and 39438 transitions. [2020-09-15 13:18:53,871 INFO L78 Accepts]: Start accepts. Automaton has 8702 states and 39438 transitions. Word has length 25 [2020-09-15 13:18:53,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:18:53,872 INFO L479 AbstractCegarLoop]: Abstraction has 8702 states and 39438 transitions. [2020-09-15 13:18:53,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 13:18:53,872 INFO L276 IsEmpty]: Start isEmpty. Operand 8702 states and 39438 transitions. [2020-09-15 13:18:53,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 13:18:53,876 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:18:53,876 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:18:54,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2020-09-15 13:18:54,083 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]=== [2020-09-15 13:18:54,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:18:54,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1576190868, now seen corresponding path program 3 times [2020-09-15 13:18:54,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:18:54,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942537745] [2020-09-15 13:18:54,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:18:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:18:54,191 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 13:18:54,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942537745] [2020-09-15 13:18:54,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018457822] [2020-09-15 13:18:54,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:18:54,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-15 13:18:54,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 13:18:54,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 13:18:54,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:18:54,591 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 13:18:54,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:18:54,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 13:18:54,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326977905] [2020-09-15 13:18:54,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 13:18:54,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:18:54,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 13:18:54,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 13:18:54,593 INFO L87 Difference]: Start difference. First operand 8702 states and 39438 transitions. Second operand 16 states. [2020-09-15 13:18:55,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:18:55,750 INFO L93 Difference]: Finished difference Result 28297 states and 108461 transitions. [2020-09-15 13:18:55,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:18:55,751 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 13:18:55,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:18:55,846 INFO L225 Difference]: With dead ends: 28297 [2020-09-15 13:18:55,846 INFO L226 Difference]: Without dead ends: 28277 [2020-09-15 13:18:55,847 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 [2020-09-15 13:18:56,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28277 states. [2020-09-15 13:18:56,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28277 to 8596. [2020-09-15 13:18:56,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8596 states. [2020-09-15 13:18:56,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 38978 transitions. [2020-09-15 13:18:56,355 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 38978 transitions. Word has length 25 [2020-09-15 13:18:56,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:18:56,355 INFO L479 AbstractCegarLoop]: Abstraction has 8596 states and 38978 transitions. [2020-09-15 13:18:56,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 13:18:56,355 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 38978 transitions. [2020-09-15 13:18:56,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 13:18:56,359 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:18:56,359 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:18:56,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:18:56,560 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]=== [2020-09-15 13:18:56,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:18:56,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1673729315, now seen corresponding path program 4 times [2020-09-15 13:18:56,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:18:56,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855824444] [2020-09-15 13:18:56,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:18:56,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:18:56,663 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 13:18:56,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855824444] [2020-09-15 13:18:56,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416726576] [2020-09-15 13:18:56,664 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:18:56,767 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 13:18:56,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 13:18:56,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 13:18:56,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:18:56,900 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 13:18:56,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:18:56,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 13:18:56,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672986641] [2020-09-15 13:18:56,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 13:18:56,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:18:56,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 13:18:56,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 13:18:56,903 INFO L87 Difference]: Start difference. First operand 8596 states and 38978 transitions. Second operand 16 states. [2020-09-15 13:18:58,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:18:58,336 INFO L93 Difference]: Finished difference Result 28565 states and 109596 transitions. [2020-09-15 13:18:58,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:18:58,337 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 13:18:58,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:18:58,429 INFO L225 Difference]: With dead ends: 28565 [2020-09-15 13:18:58,429 INFO L226 Difference]: Without dead ends: 28538 [2020-09-15 13:18:58,430 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 [2020-09-15 13:18:58,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28538 states. [2020-09-15 13:18:58,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28538 to 8563. [2020-09-15 13:18:58,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8563 states. [2020-09-15 13:18:58,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8563 states to 8563 states and 38809 transitions. [2020-09-15 13:18:58,940 INFO L78 Accepts]: Start accepts. Automaton has 8563 states and 38809 transitions. Word has length 25 [2020-09-15 13:18:58,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:18:58,941 INFO L479 AbstractCegarLoop]: Abstraction has 8563 states and 38809 transitions. [2020-09-15 13:18:58,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 13:18:58,941 INFO L276 IsEmpty]: Start isEmpty. Operand 8563 states and 38809 transitions. [2020-09-15 13:18:58,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 13:18:58,945 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:18:58,945 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:18:59,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2020-09-15 13:18:59,146 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]=== [2020-09-15 13:18:59,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:18:59,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1673708886, now seen corresponding path program 4 times [2020-09-15 13:18:59,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:18:59,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72534491] [2020-09-15 13:18:59,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:18:59,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:18:59,247 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 13:18:59,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72534491] [2020-09-15 13:18:59,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242366301] [2020-09-15 13:18:59,248 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:18:59,349 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 13:18:59,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 13:18:59,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 13:18:59,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:18:59,505 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 13:18:59,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:18:59,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 13:18:59,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754103273] [2020-09-15 13:18:59,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 13:18:59,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:18:59,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 13:18:59,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 13:18:59,508 INFO L87 Difference]: Start difference. First operand 8563 states and 38809 transitions. Second operand 16 states. [2020-09-15 13:19:00,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:19:00,781 INFO L93 Difference]: Finished difference Result 28213 states and 108237 transitions. [2020-09-15 13:19:00,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:19:00,782 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 13:19:00,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:19:00,879 INFO L225 Difference]: With dead ends: 28213 [2020-09-15 13:19:00,879 INFO L226 Difference]: Without dead ends: 28186 [2020-09-15 13:19:00,880 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 [2020-09-15 13:19:01,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28186 states. [2020-09-15 13:19:01,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28186 to 8421. [2020-09-15 13:19:01,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8421 states. [2020-09-15 13:19:01,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8421 states to 8421 states and 38146 transitions. [2020-09-15 13:19:01,401 INFO L78 Accepts]: Start accepts. Automaton has 8421 states and 38146 transitions. Word has length 25 [2020-09-15 13:19:01,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:19:01,402 INFO L479 AbstractCegarLoop]: Abstraction has 8421 states and 38146 transitions. [2020-09-15 13:19:01,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 13:19:01,402 INFO L276 IsEmpty]: Start isEmpty. Operand 8421 states and 38146 transitions. [2020-09-15 13:19:01,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 13:19:01,407 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:19:01,407 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:19:01,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:19:01,608 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]=== [2020-09-15 13:19:01,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:19:01,609 INFO L82 PathProgramCache]: Analyzing trace with hash -857609261, now seen corresponding path program 5 times [2020-09-15 13:19:01,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:19:01,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530481180] [2020-09-15 13:19:01,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:19:01,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:19:01,729 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 13:19:01,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530481180] [2020-09-15 13:19:01,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:19:01,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 13:19:01,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153009287] [2020-09-15 13:19:01,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 13:19:01,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:19:01,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 13:19:01,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 13:19:01,731 INFO L87 Difference]: Start difference. First operand 8421 states and 38146 transitions. Second operand 9 states. [2020-09-15 13:19:02,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:19:02,998 INFO L93 Difference]: Finished difference Result 28226 states and 108274 transitions. [2020-09-15 13:19:02,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:19:02,998 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 13:19:02,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:19:03,094 INFO L225 Difference]: With dead ends: 28226 [2020-09-15 13:19:03,094 INFO L226 Difference]: Without dead ends: 28206 [2020-09-15 13:19:03,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 13:19:03,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28206 states. [2020-09-15 13:19:03,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28206 to 8277. [2020-09-15 13:19:03,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8277 states. [2020-09-15 13:19:03,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8277 states to 8277 states and 37487 transitions. [2020-09-15 13:19:03,602 INFO L78 Accepts]: Start accepts. Automaton has 8277 states and 37487 transitions. Word has length 25 [2020-09-15 13:19:03,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:19:03,603 INFO L479 AbstractCegarLoop]: Abstraction has 8277 states and 37487 transitions. [2020-09-15 13:19:03,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 13:19:03,603 INFO L276 IsEmpty]: Start isEmpty. Operand 8277 states and 37487 transitions. [2020-09-15 13:19:03,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 13:19:03,608 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:19:03,608 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:19:03,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-09-15 13:19:03,609 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]=== [2020-09-15 13:19:03,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:19:03,609 INFO L82 PathProgramCache]: Analyzing trace with hash -857622932, now seen corresponding path program 5 times [2020-09-15 13:19:03,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:19:03,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515434904] [2020-09-15 13:19:03,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:19:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:19:03,721 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 13:19:03,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515434904] [2020-09-15 13:19:03,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:19:03,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 13:19:03,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918589981] [2020-09-15 13:19:03,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 13:19:03,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:19:03,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 13:19:03,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 13:19:03,723 INFO L87 Difference]: Start difference. First operand 8277 states and 37487 transitions. Second operand 9 states. [2020-09-15 13:19:04,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:19:04,840 INFO L93 Difference]: Finished difference Result 27801 states and 106552 transitions. [2020-09-15 13:19:04,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:19:04,841 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 13:19:04,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:19:04,938 INFO L225 Difference]: With dead ends: 27801 [2020-09-15 13:19:04,938 INFO L226 Difference]: Without dead ends: 27781 [2020-09-15 13:19:04,939 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 [2020-09-15 13:19:05,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27781 states. [2020-09-15 13:19:05,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27781 to 8127. [2020-09-15 13:19:05,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8127 states. [2020-09-15 13:19:05,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8127 states to 8127 states and 36806 transitions. [2020-09-15 13:19:05,421 INFO L78 Accepts]: Start accepts. Automaton has 8127 states and 36806 transitions. Word has length 25 [2020-09-15 13:19:05,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:19:05,421 INFO L479 AbstractCegarLoop]: Abstraction has 8127 states and 36806 transitions. [2020-09-15 13:19:05,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 13:19:05,421 INFO L276 IsEmpty]: Start isEmpty. Operand 8127 states and 36806 transitions. [2020-09-15 13:19:05,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 13:19:05,425 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:19:05,425 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:19:05,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-09-15 13:19:05,425 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]=== [2020-09-15 13:19:05,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:19:05,426 INFO L82 PathProgramCache]: Analyzing trace with hash -864096941, now seen corresponding path program 6 times [2020-09-15 13:19:05,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:19:05,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475087232] [2020-09-15 13:19:05,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:19:05,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:19:05,536 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 13:19:05,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475087232] [2020-09-15 13:19:05,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:19:05,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 13:19:05,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844895389] [2020-09-15 13:19:05,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 13:19:05,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:19:05,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 13:19:05,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 13:19:05,538 INFO L87 Difference]: Start difference. First operand 8127 states and 36806 transitions. Second operand 9 states. [2020-09-15 13:19:06,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:19:06,654 INFO L93 Difference]: Finished difference Result 27548 states and 105447 transitions. [2020-09-15 13:19:06,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:19:06,655 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 13:19:06,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:19:06,748 INFO L225 Difference]: With dead ends: 27548 [2020-09-15 13:19:06,748 INFO L226 Difference]: Without dead ends: 27521 [2020-09-15 13:19:06,749 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 [2020-09-15 13:19:06,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27521 states. [2020-09-15 13:19:07,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27521 to 7841. [2020-09-15 13:19:07,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7841 states. [2020-09-15 13:19:07,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7841 states to 7841 states and 35578 transitions. [2020-09-15 13:19:07,215 INFO L78 Accepts]: Start accepts. Automaton has 7841 states and 35578 transitions. Word has length 25 [2020-09-15 13:19:07,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:19:07,216 INFO L479 AbstractCegarLoop]: Abstraction has 7841 states and 35578 transitions. [2020-09-15 13:19:07,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 13:19:07,216 INFO L276 IsEmpty]: Start isEmpty. Operand 7841 states and 35578 transitions. [2020-09-15 13:19:07,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 13:19:07,220 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:19:07,220 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:19:07,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-09-15 13:19:07,220 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]=== [2020-09-15 13:19:07,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:19:07,221 INFO L82 PathProgramCache]: Analyzing trace with hash -864117370, now seen corresponding path program 5 times [2020-09-15 13:19:07,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:19:07,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408469951] [2020-09-15 13:19:07,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:19:07,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:19:07,326 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 13:19:07,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408469951] [2020-09-15 13:19:07,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:19:07,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 13:19:07,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913785459] [2020-09-15 13:19:07,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 13:19:07,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:19:07,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 13:19:07,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 13:19:07,328 INFO L87 Difference]: Start difference. First operand 7841 states and 35578 transitions. Second operand 9 states. [2020-09-15 13:19:08,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:19:08,446 INFO L93 Difference]: Finished difference Result 27167 states and 103966 transitions. [2020-09-15 13:19:08,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:19:08,447 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 13:19:08,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:19:08,538 INFO L225 Difference]: With dead ends: 27167 [2020-09-15 13:19:08,538 INFO L226 Difference]: Without dead ends: 27147 [2020-09-15 13:19:08,538 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 [2020-09-15 13:19:08,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27147 states. [2020-09-15 13:19:09,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27147 to 7743. [2020-09-15 13:19:09,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7743 states. [2020-09-15 13:19:09,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7743 states to 7743 states and 35142 transitions. [2020-09-15 13:19:09,247 INFO L78 Accepts]: Start accepts. Automaton has 7743 states and 35142 transitions. Word has length 25 [2020-09-15 13:19:09,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:19:09,247 INFO L479 AbstractCegarLoop]: Abstraction has 7743 states and 35142 transitions. [2020-09-15 13:19:09,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 13:19:09,247 INFO L276 IsEmpty]: Start isEmpty. Operand 7743 states and 35142 transitions. [2020-09-15 13:19:09,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 13:19:09,250 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:19:09,251 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:19:09,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-09-15 13:19:09,251 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]=== [2020-09-15 13:19:09,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:19:09,251 INFO L82 PathProgramCache]: Analyzing trace with hash -877234772, now seen corresponding path program 6 times [2020-09-15 13:19:09,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:19:09,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121264108] [2020-09-15 13:19:09,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:19:09,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:19:09,353 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 13:19:09,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121264108] [2020-09-15 13:19:09,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:19:09,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 13:19:09,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620537947] [2020-09-15 13:19:09,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 13:19:09,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:19:09,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 13:19:09,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 13:19:09,355 INFO L87 Difference]: Start difference. First operand 7743 states and 35142 transitions. Second operand 9 states. [2020-09-15 13:19:10,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:19:10,519 INFO L93 Difference]: Finished difference Result 26955 states and 103085 transitions. [2020-09-15 13:19:10,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:19:10,520 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 13:19:10,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:19:10,612 INFO L225 Difference]: With dead ends: 26955 [2020-09-15 13:19:10,613 INFO L226 Difference]: Without dead ends: 26928 [2020-09-15 13:19:10,613 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 [2020-09-15 13:19:10,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26928 states. [2020-09-15 13:19:11,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26928 to 7532. [2020-09-15 13:19:11,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7532 states. [2020-09-15 13:19:11,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7532 states to 7532 states and 34256 transitions. [2020-09-15 13:19:11,092 INFO L78 Accepts]: Start accepts. Automaton has 7532 states and 34256 transitions. Word has length 25 [2020-09-15 13:19:11,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:19:11,093 INFO L479 AbstractCegarLoop]: Abstraction has 7532 states and 34256 transitions. [2020-09-15 13:19:11,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 13:19:11,093 INFO L276 IsEmpty]: Start isEmpty. Operand 7532 states and 34256 transitions. [2020-09-15 13:19:11,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 13:19:11,097 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:19:11,097 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:19:11,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-09-15 13:19:11,097 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]=== [2020-09-15 13:19:11,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:19:11,098 INFO L82 PathProgramCache]: Analyzing trace with hash -877241530, now seen corresponding path program 6 times [2020-09-15 13:19:11,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:19:11,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764183704] [2020-09-15 13:19:11,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:19:11,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:19:11,215 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 13:19:11,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764183704] [2020-09-15 13:19:11,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:19:11,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 13:19:11,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431140337] [2020-09-15 13:19:11,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 13:19:11,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:19:11,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 13:19:11,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 13:19:11,217 INFO L87 Difference]: Start difference. First operand 7532 states and 34256 transitions. Second operand 9 states. [2020-09-15 13:19:12,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:19:12,486 INFO L93 Difference]: Finished difference Result 26632 states and 101828 transitions. [2020-09-15 13:19:12,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:19:12,486 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 13:19:12,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:19:12,577 INFO L225 Difference]: With dead ends: 26632 [2020-09-15 13:19:12,578 INFO L226 Difference]: Without dead ends: 26605 [2020-09-15 13:19:12,578 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 [2020-09-15 13:19:12,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26605 states. [2020-09-15 13:19:13,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26605 to 7269. [2020-09-15 13:19:13,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7269 states. [2020-09-15 13:19:13,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7269 states to 7269 states and 33154 transitions. [2020-09-15 13:19:13,044 INFO L78 Accepts]: Start accepts. Automaton has 7269 states and 33154 transitions. Word has length 25 [2020-09-15 13:19:13,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:19:13,044 INFO L479 AbstractCegarLoop]: Abstraction has 7269 states and 33154 transitions. [2020-09-15 13:19:13,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 13:19:13,044 INFO L276 IsEmpty]: Start isEmpty. Operand 7269 states and 33154 transitions. [2020-09-15 13:19:13,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 13:19:13,047 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:19:13,048 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:19:13,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-09-15 13:19:13,048 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]=== [2020-09-15 13:19:13,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:19:13,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1311164244, now seen corresponding path program 1 times [2020-09-15 13:19:13,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:19:13,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107863767] [2020-09-15 13:19:13,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:19:13,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:19:13,121 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-15 13:19:13,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107863767] [2020-09-15 13:19:13,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:19:13,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 13:19:13,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861493212] [2020-09-15 13:19:13,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 13:19:13,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:19:13,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 13:19:13,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 13:19:13,123 INFO L87 Difference]: Start difference. First operand 7269 states and 33154 transitions. Second operand 5 states. [2020-09-15 13:19:13,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:19:13,324 INFO L93 Difference]: Finished difference Result 11919 states and 51979 transitions. [2020-09-15 13:19:13,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 13:19:13,325 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-09-15 13:19:13,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:19:13,366 INFO L225 Difference]: With dead ends: 11919 [2020-09-15 13:19:13,367 INFO L226 Difference]: Without dead ends: 11887 [2020-09-15 13:19:13,367 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 [2020-09-15 13:19:13,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11887 states. [2020-09-15 13:19:13,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11887 to 8560. [2020-09-15 13:19:13,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8560 states. [2020-09-15 13:19:13,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8560 states to 8560 states and 38495 transitions. [2020-09-15 13:19:13,669 INFO L78 Accepts]: Start accepts. Automaton has 8560 states and 38495 transitions. Word has length 25 [2020-09-15 13:19:13,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:19:13,669 INFO L479 AbstractCegarLoop]: Abstraction has 8560 states and 38495 transitions. [2020-09-15 13:19:13,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 13:19:13,669 INFO L276 IsEmpty]: Start isEmpty. Operand 8560 states and 38495 transitions. [2020-09-15 13:19:13,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-15 13:19:13,674 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:19:13,674 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:19:13,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-09-15 13:19:13,675 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]=== [2020-09-15 13:19:13,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:19:13,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1986416772, now seen corresponding path program 1 times [2020-09-15 13:19:13,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:19:13,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886163117] [2020-09-15 13:19:13,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:19:13,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 13:19:13,687 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 13:19:13,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 13:19:13,698 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 13:19:13,706 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-15 13:19:13,707 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-15 13:19:13,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-09-15 13:19:13,707 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-15 13:19:13,708 WARN L363 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-15 13:19:13,708 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-09-15 13:19:13,728 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,728 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,729 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,729 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,729 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,729 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,729 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,729 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,730 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,730 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,730 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,730 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,730 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,730 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,730 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,730 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,731 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,731 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,731 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,731 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,731 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,731 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,731 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,731 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,732 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,732 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,732 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,732 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,732 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,732 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,732 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,732 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,732 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,733 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,733 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,733 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,733 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,733 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,733 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,733 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,734 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,734 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,734 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,734 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,734 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,734 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,734 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,734 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,735 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,735 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,735 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,735 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,735 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,735 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,735 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,735 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,735 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,736 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,736 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,736 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,736 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,736 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,736 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,736 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,736 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,736 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,737 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,737 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,737 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,737 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,737 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,737 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,738 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,738 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,738 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,738 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,738 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,738 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,739 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,739 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,739 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,739 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,739 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,739 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,739 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,740 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,740 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,740 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,740 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,740 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,740 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,740 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,741 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,741 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,741 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,741 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,741 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,741 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,741 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,742 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,742 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,742 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,742 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,743 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,743 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,743 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,743 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,745 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,746 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,746 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,746 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,746 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,747 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,747 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,747 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,748 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,748 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,750 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,750 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,750 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,751 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,751 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,752 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,752 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,752 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,752 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,752 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,754 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,754 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,754 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,754 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,754 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,755 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,756 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,756 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,756 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,756 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,756 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,757 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,757 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,757 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,757 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,757 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,757 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,758 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,759 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,759 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,759 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,759 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,759 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,760 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,760 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,760 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,761 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,761 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,761 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,762 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,762 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,762 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,762 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,762 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,762 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,763 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,764 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,764 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,764 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,764 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,764 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:19:13,765 INFO L251 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-09-15 13:19:13,766 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 13:19:13,766 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 13:19:13,766 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-15 13:19:13,766 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-15 13:19:13,766 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 13:19:13,766 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 13:19:13,766 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 13:19:13,766 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 13:19:13,768 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 156 places, 138 transitions, 396 flow [2020-09-15 13:19:13,768 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 156 places, 138 transitions, 396 flow [2020-09-15 13:19:13,788 INFO L129 PetriNetUnfolder]: 9/173 cut-off events. [2020-09-15 13:19:13,788 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-09-15 13:19:13,790 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. [2020-09-15 13:19:13,795 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 156 places, 138 transitions, 396 flow [2020-09-15 13:19:13,814 INFO L129 PetriNetUnfolder]: 9/173 cut-off events. [2020-09-15 13:19:13,814 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-09-15 13:19:13,816 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. [2020-09-15 13:19:13,822 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2832 [2020-09-15 13:19:13,822 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-15 13:19:16,298 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2020-09-15 13:19:16,678 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-09-15 13:19:16,869 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-09-15 13:19:16,877 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3678 [2020-09-15 13:19:16,877 INFO L214 etLargeBlockEncoding]: Total number of compositions: 113 [2020-09-15 13:19:16,878 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 45 transitions, 210 flow [2020-09-15 13:19:18,772 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 18584 states. [2020-09-15 13:19:18,773 INFO L276 IsEmpty]: Start isEmpty. Operand 18584 states. [2020-09-15 13:19:18,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-15 13:19:18,773 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:19:18,773 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-15 13:19:18,773 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]=== [2020-09-15 13:19:18,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:19:18,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1298891, now seen corresponding path program 1 times [2020-09-15 13:19:18,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:19:18,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984641482] [2020-09-15 13:19:18,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:19:18,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:19:18,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 13:19:18,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984641482] [2020-09-15 13:19:18,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:19:18,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 13:19:18,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142868439] [2020-09-15 13:19:18,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 13:19:18,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:19:18,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 13:19:18,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 13:19:18,796 INFO L87 Difference]: Start difference. First operand 18584 states. Second operand 3 states. [2020-09-15 13:19:18,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:19:18,973 INFO L93 Difference]: Finished difference Result 17885 states and 92755 transitions. [2020-09-15 13:19:18,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 13:19:18,974 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-15 13:19:18,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:19:19,046 INFO L225 Difference]: With dead ends: 17885 [2020-09-15 13:19:19,046 INFO L226 Difference]: Without dead ends: 16791 [2020-09-15 13:19:19,046 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 [2020-09-15 13:19:19,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16791 states. [2020-09-15 13:19:19,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16791 to 16791. [2020-09-15 13:19:19,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16791 states. [2020-09-15 13:19:19,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16791 states to 16791 states and 86558 transitions. [2020-09-15 13:19:19,960 INFO L78 Accepts]: Start accepts. Automaton has 16791 states and 86558 transitions. Word has length 3 [2020-09-15 13:19:19,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:19:19,960 INFO L479 AbstractCegarLoop]: Abstraction has 16791 states and 86558 transitions. [2020-09-15 13:19:19,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 13:19:19,960 INFO L276 IsEmpty]: Start isEmpty. Operand 16791 states and 86558 transitions. [2020-09-15 13:19:19,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-15 13:19:19,961 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:19:19,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:19:19,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-09-15 13:19:19,961 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]=== [2020-09-15 13:19:19,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:19:19,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1091574945, now seen corresponding path program 1 times [2020-09-15 13:19:19,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:19:19,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643318626] [2020-09-15 13:19:19,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:19:19,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:19:20,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 13:19:20,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643318626] [2020-09-15 13:19:20,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:19:20,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 13:19:20,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264325365] [2020-09-15 13:19:20,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 13:19:20,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:19:20,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 13:19:20,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 13:19:20,002 INFO L87 Difference]: Start difference. First operand 16791 states and 86558 transitions. Second operand 5 states. [2020-09-15 13:19:20,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:19:20,344 INFO L93 Difference]: Finished difference Result 30985 states and 150574 transitions. [2020-09-15 13:19:20,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 13:19:20,345 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-15 13:19:20,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:19:20,479 INFO L225 Difference]: With dead ends: 30985 [2020-09-15 13:19:20,479 INFO L226 Difference]: Without dead ends: 30977 [2020-09-15 13:19:20,480 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 [2020-09-15 13:19:21,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30977 states. [2020-09-15 13:19:21,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30977 to 19868. [2020-09-15 13:19:21,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19868 states. [2020-09-15 13:19:21,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19868 states to 19868 states and 103363 transitions. [2020-09-15 13:19:21,653 INFO L78 Accepts]: Start accepts. Automaton has 19868 states and 103363 transitions. Word has length 9 [2020-09-15 13:19:21,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:19:21,653 INFO L479 AbstractCegarLoop]: Abstraction has 19868 states and 103363 transitions. [2020-09-15 13:19:21,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 13:19:21,653 INFO L276 IsEmpty]: Start isEmpty. Operand 19868 states and 103363 transitions. [2020-09-15 13:19:21,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-15 13:19:21,653 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:19:21,654 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:19:21,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-09-15 13:19:21,654 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]=== [2020-09-15 13:19:21,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:19:21,654 INFO L82 PathProgramCache]: Analyzing trace with hash -231509072, now seen corresponding path program 1 times [2020-09-15 13:19:21,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:19:21,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812047739] [2020-09-15 13:19:21,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:19:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:19:21,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 13:19:21,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812047739] [2020-09-15 13:19:21,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:19:21,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 13:19:21,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124443406] [2020-09-15 13:19:21,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 13:19:21,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:19:21,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 13:19:21,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 13:19:21,694 INFO L87 Difference]: Start difference. First operand 19868 states and 103363 transitions. Second operand 5 states. [2020-09-15 13:19:22,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:19:22,024 INFO L93 Difference]: Finished difference Result 36296 states and 178836 transitions. [2020-09-15 13:19:22,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 13:19:22,025 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-15 13:19:22,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:19:22,143 INFO L225 Difference]: With dead ends: 36296 [2020-09-15 13:19:22,143 INFO L226 Difference]: Without dead ends: 36280 [2020-09-15 13:19:22,143 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 [2020-09-15 13:19:24,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36280 states. [2020-09-15 13:19:25,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36280 to 23806. [2020-09-15 13:19:25,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23806 states. [2020-09-15 13:19:25,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23806 states to 23806 states and 125455 transitions. [2020-09-15 13:19:25,322 INFO L78 Accepts]: Start accepts. Automaton has 23806 states and 125455 transitions. Word has length 13 [2020-09-15 13:19:25,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:19:25,322 INFO L479 AbstractCegarLoop]: Abstraction has 23806 states and 125455 transitions. [2020-09-15 13:19:25,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 13:19:25,323 INFO L276 IsEmpty]: Start isEmpty. Operand 23806 states and 125455 transitions. [2020-09-15 13:19:25,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 13:19:25,323 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:19:25,323 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:19:25,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-09-15 13:19:25,323 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]=== [2020-09-15 13:19:25,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:19:25,324 INFO L82 PathProgramCache]: Analyzing trace with hash -588793474, now seen corresponding path program 1 times [2020-09-15 13:19:25,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:19:25,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617430299] [2020-09-15 13:19:25,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:19:25,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:19:25,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 13:19:25,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617430299] [2020-09-15 13:19:25,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407967696] [2020-09-15 13:19:25,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:19:25,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:19:25,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 13:19:25,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:19:25,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 13:19:25,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:19:25,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 13:19:25,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230136173] [2020-09-15 13:19:25,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 13:19:25,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:19:25,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 13:19:25,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-15 13:19:25,589 INFO L87 Difference]: Start difference. First operand 23806 states and 125455 transitions. Second operand 12 states. [2020-09-15 13:19:26,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:19:26,446 INFO L93 Difference]: Finished difference Result 56720 states and 262685 transitions. [2020-09-15 13:19:26,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 13:19:26,447 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-09-15 13:19:26,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:19:26,701 INFO L225 Difference]: With dead ends: 56720 [2020-09-15 13:19:26,701 INFO L226 Difference]: Without dead ends: 56704 [2020-09-15 13:19:26,702 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 [2020-09-15 13:19:27,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56704 states. [2020-09-15 13:19:28,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56704 to 23629. [2020-09-15 13:19:28,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23629 states. [2020-09-15 13:19:28,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23629 states to 23629 states and 124418 transitions. [2020-09-15 13:19:28,492 INFO L78 Accepts]: Start accepts. Automaton has 23629 states and 124418 transitions. Word has length 15 [2020-09-15 13:19:28,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:19:28,492 INFO L479 AbstractCegarLoop]: Abstraction has 23629 states and 124418 transitions. [2020-09-15 13:19:28,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 13:19:28,492 INFO L276 IsEmpty]: Start isEmpty. Operand 23629 states and 124418 transitions. [2020-09-15 13:19:28,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 13:19:28,493 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:19:28,493 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:19:28,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-09-15 13:19:28,696 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]=== [2020-09-15 13:19:28,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:19:28,697 INFO L82 PathProgramCache]: Analyzing trace with hash 858081470, now seen corresponding path program 2 times [2020-09-15 13:19:28,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:19:28,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7287696] [2020-09-15 13:19:28,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:19:28,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:19:28,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 13:19:28,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7287696] [2020-09-15 13:19:28,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:19:28,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 13:19:28,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813639363] [2020-09-15 13:19:28,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 13:19:28,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:19:28,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 13:19:28,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 13:19:28,770 INFO L87 Difference]: Start difference. First operand 23629 states and 124418 transitions. Second operand 7 states. [2020-09-15 13:19:30,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:19:30,218 INFO L93 Difference]: Finished difference Result 58078 states and 269185 transitions. [2020-09-15 13:19:30,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 13:19:30,218 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-15 13:19:30,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:19:30,489 INFO L225 Difference]: With dead ends: 58078 [2020-09-15 13:19:30,489 INFO L226 Difference]: Without dead ends: 58061 [2020-09-15 13:19:30,490 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 [2020-09-15 13:19:31,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58061 states. [2020-09-15 13:19:32,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58061 to 23109. [2020-09-15 13:19:32,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23109 states. [2020-09-15 13:19:32,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23109 states to 23109 states and 121651 transitions. [2020-09-15 13:19:32,311 INFO L78 Accepts]: Start accepts. Automaton has 23109 states and 121651 transitions. Word has length 15 [2020-09-15 13:19:32,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:19:32,311 INFO L479 AbstractCegarLoop]: Abstraction has 23109 states and 121651 transitions. [2020-09-15 13:19:32,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 13:19:32,311 INFO L276 IsEmpty]: Start isEmpty. Operand 23109 states and 121651 transitions. [2020-09-15 13:19:32,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-15 13:19:32,312 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:19:32,312 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:19:32,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2020-09-15 13:19:32,312 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]=== [2020-09-15 13:19:32,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:19:32,312 INFO L82 PathProgramCache]: Analyzing trace with hash 704376303, now seen corresponding path program 1 times [2020-09-15 13:19:32,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:19:32,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22938441] [2020-09-15 13:19:32,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:19:32,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:19:32,365 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 13:19:32,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22938441] [2020-09-15 13:19:32,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:19:32,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 13:19:32,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144324973] [2020-09-15 13:19:32,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 13:19:32,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:19:32,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 13:19:32,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 13:19:32,368 INFO L87 Difference]: Start difference. First operand 23109 states and 121651 transitions. Second operand 5 states. [2020-09-15 13:19:33,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:19:33,059 INFO L93 Difference]: Finished difference Result 41885 states and 209629 transitions. [2020-09-15 13:19:33,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 13:19:33,060 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-15 13:19:33,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:19:33,319 INFO L225 Difference]: With dead ends: 41885 [2020-09-15 13:19:33,320 INFO L226 Difference]: Without dead ends: 41856 [2020-09-15 13:19:33,320 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 [2020-09-15 13:19:33,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41856 states. [2020-09-15 13:19:37,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41856 to 28237. [2020-09-15 13:19:37,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28237 states. [2020-09-15 13:19:37,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28237 states to 28237 states and 150261 transitions. [2020-09-15 13:19:37,519 INFO L78 Accepts]: Start accepts. Automaton has 28237 states and 150261 transitions. Word has length 17 [2020-09-15 13:19:37,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:19:37,519 INFO L479 AbstractCegarLoop]: Abstraction has 28237 states and 150261 transitions. [2020-09-15 13:19:37,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 13:19:37,519 INFO L276 IsEmpty]: Start isEmpty. Operand 28237 states and 150261 transitions. [2020-09-15 13:19:37,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 13:19:37,520 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:19:37,520 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:19:37,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2020-09-15 13:19:37,520 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]=== [2020-09-15 13:19:37,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:19:37,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1918672061, now seen corresponding path program 1 times [2020-09-15 13:19:37,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:19:37,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325678134] [2020-09-15 13:19:37,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:19:37,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:19:37,588 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 13:19:37,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325678134] [2020-09-15 13:19:37,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26668479] [2020-09-15 13:19:37,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:19:37,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:19:37,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 13:19:37,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:19:37,802 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 13:19:37,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:19:37,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 13:19:37,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288356475] [2020-09-15 13:19:37,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 13:19:37,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:19:37,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 13:19:37,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-15 13:19:37,804 INFO L87 Difference]: Start difference. First operand 28237 states and 150261 transitions. Second operand 12 states. [2020-09-15 13:19:38,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:19:38,735 INFO L93 Difference]: Finished difference Result 66831 states and 314874 transitions. [2020-09-15 13:19:38,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 13:19:38,736 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-15 13:19:38,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:19:39,062 INFO L225 Difference]: With dead ends: 66831 [2020-09-15 13:19:39,062 INFO L226 Difference]: Without dead ends: 66807 [2020-09-15 13:19:39,063 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 [2020-09-15 13:19:39,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66807 states. [2020-09-15 13:19:41,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66807 to 28673. [2020-09-15 13:19:41,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28673 states. [2020-09-15 13:19:41,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28673 states to 28673 states and 152375 transitions. [2020-09-15 13:19:41,285 INFO L78 Accepts]: Start accepts. Automaton has 28673 states and 152375 transitions. Word has length 19 [2020-09-15 13:19:41,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:19:41,285 INFO L479 AbstractCegarLoop]: Abstraction has 28673 states and 152375 transitions. [2020-09-15 13:19:41,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 13:19:41,285 INFO L276 IsEmpty]: Start isEmpty. Operand 28673 states and 152375 transitions. [2020-09-15 13:19:41,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 13:19:41,286 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:19:41,286 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:19:41,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2020-09-15 13:19:41,488 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]=== [2020-09-15 13:19:41,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:19:41,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1064014108, now seen corresponding path program 1 times [2020-09-15 13:19:41,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:19:41,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629939841] [2020-09-15 13:19:41,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:19:41,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:19:41,554 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 13:19:41,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629939841] [2020-09-15 13:19:41,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531599628] [2020-09-15 13:19:41,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:19:41,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:19:41,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 13:19:41,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:19:41,763 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 13:19:41,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:19:41,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 13:19:41,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149948262] [2020-09-15 13:19:41,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 13:19:41,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:19:41,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 13:19:41,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-15 13:19:41,765 INFO L87 Difference]: Start difference. First operand 28673 states and 152375 transitions. Second operand 12 states. [2020-09-15 13:19:43,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:19:43,462 INFO L93 Difference]: Finished difference Result 69484 states and 328264 transitions. [2020-09-15 13:19:43,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 13:19:43,463 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-15 13:19:43,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:19:43,805 INFO L225 Difference]: With dead ends: 69484 [2020-09-15 13:19:43,805 INFO L226 Difference]: Without dead ends: 69451 [2020-09-15 13:19:43,805 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 [2020-09-15 13:19:44,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69451 states. [2020-09-15 13:19:45,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69451 to 28873. [2020-09-15 13:19:45,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28873 states. [2020-09-15 13:19:45,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28873 states to 28873 states and 153454 transitions. [2020-09-15 13:19:45,924 INFO L78 Accepts]: Start accepts. Automaton has 28873 states and 153454 transitions. Word has length 19 [2020-09-15 13:19:45,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:19:45,925 INFO L479 AbstractCegarLoop]: Abstraction has 28873 states and 153454 transitions. [2020-09-15 13:19:45,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 13:19:45,925 INFO L276 IsEmpty]: Start isEmpty. Operand 28873 states and 153454 transitions. [2020-09-15 13:19:45,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 13:19:45,926 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:19:45,926 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:19:46,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:19:46,127 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]=== [2020-09-15 13:19:46,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:19:46,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1699177508, now seen corresponding path program 2 times [2020-09-15 13:19:46,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:19:46,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109801974] [2020-09-15 13:19:46,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:19:46,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:19:46,190 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 13:19:46,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109801974] [2020-09-15 13:19:46,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:19:46,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 13:19:46,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046936919] [2020-09-15 13:19:46,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 13:19:46,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:19:46,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 13:19:46,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 13:19:46,193 INFO L87 Difference]: Start difference. First operand 28873 states and 153454 transitions. Second operand 7 states. [2020-09-15 13:19:47,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:19:47,030 INFO L93 Difference]: Finished difference Result 70510 states and 333491 transitions. [2020-09-15 13:19:47,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 13:19:47,031 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-15 13:19:47,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:19:47,364 INFO L225 Difference]: With dead ends: 70510 [2020-09-15 13:19:47,364 INFO L226 Difference]: Without dead ends: 70477 [2020-09-15 13:19:47,364 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 [2020-09-15 13:19:48,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70477 states. [2020-09-15 13:19:50,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70477 to 28942. [2020-09-15 13:19:50,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28942 states. [2020-09-15 13:19:50,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28942 states to 28942 states and 153921 transitions. [2020-09-15 13:19:50,269 INFO L78 Accepts]: Start accepts. Automaton has 28942 states and 153921 transitions. Word has length 19 [2020-09-15 13:19:50,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:19:50,269 INFO L479 AbstractCegarLoop]: Abstraction has 28942 states and 153921 transitions. [2020-09-15 13:19:50,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 13:19:50,269 INFO L276 IsEmpty]: Start isEmpty. Operand 28942 states and 153921 transitions. [2020-09-15 13:19:50,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 13:19:50,270 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:19:50,270 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:19:50,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2020-09-15 13:19:50,270 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]=== [2020-09-15 13:19:50,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:19:50,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1699205315, now seen corresponding path program 2 times [2020-09-15 13:19:50,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:19:50,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406414290] [2020-09-15 13:19:50,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:19:50,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:19:50,333 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 13:19:50,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406414290] [2020-09-15 13:19:50,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:19:50,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 13:19:50,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721025001] [2020-09-15 13:19:50,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 13:19:50,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:19:50,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 13:19:50,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 13:19:50,335 INFO L87 Difference]: Start difference. First operand 28942 states and 153921 transitions. Second operand 7 states. [2020-09-15 13:19:51,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:19:51,032 INFO L93 Difference]: Finished difference Result 70096 states and 331298 transitions. [2020-09-15 13:19:51,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 13:19:51,032 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-15 13:19:51,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:19:51,235 INFO L225 Difference]: With dead ends: 70096 [2020-09-15 13:19:51,236 INFO L226 Difference]: Without dead ends: 70063 [2020-09-15 13:19:51,236 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 [2020-09-15 13:19:52,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70063 states. [2020-09-15 13:19:53,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70063 to 29094. [2020-09-15 13:19:53,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29094 states. [2020-09-15 13:19:53,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29094 states to 29094 states and 154883 transitions. [2020-09-15 13:19:53,614 INFO L78 Accepts]: Start accepts. Automaton has 29094 states and 154883 transitions. Word has length 19 [2020-09-15 13:19:53,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:19:53,614 INFO L479 AbstractCegarLoop]: Abstraction has 29094 states and 154883 transitions. [2020-09-15 13:19:53,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 13:19:53,615 INFO L276 IsEmpty]: Start isEmpty. Operand 29094 states and 154883 transitions. [2020-09-15 13:19:53,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 13:19:53,615 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:19:53,616 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:19:53,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2020-09-15 13:19:53,616 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]=== [2020-09-15 13:19:53,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:19:53,616 INFO L82 PathProgramCache]: Analyzing trace with hash -228866966, now seen corresponding path program 1 times [2020-09-15 13:19:53,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:19:53,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529313281] [2020-09-15 13:19:53,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:19:53,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:19:53,705 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 13:19:53,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529313281] [2020-09-15 13:19:53,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787454717] [2020-09-15 13:19:53,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:19:53,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:19:53,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 13:19:53,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:19:53,947 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 13:19:53,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:19:53,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 13:19:53,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361182327] [2020-09-15 13:19:53,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 13:19:53,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:19:53,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 13:19:53,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-15 13:19:53,949 INFO L87 Difference]: Start difference. First operand 29094 states and 154883 transitions. Second operand 16 states. [2020-09-15 13:19:55,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:19:55,587 INFO L93 Difference]: Finished difference Result 100731 states and 448596 transitions. [2020-09-15 13:19:55,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:19:55,588 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-15 13:19:55,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:19:55,879 INFO L225 Difference]: With dead ends: 100731 [2020-09-15 13:19:55,879 INFO L226 Difference]: Without dead ends: 100715 [2020-09-15 13:19:55,880 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 [2020-09-15 13:19:56,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100715 states. [2020-09-15 13:20:00,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100715 to 28719. [2020-09-15 13:20:00,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28719 states. [2020-09-15 13:20:00,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28719 states to 28719 states and 152760 transitions. [2020-09-15 13:20:00,610 INFO L78 Accepts]: Start accepts. Automaton has 28719 states and 152760 transitions. Word has length 21 [2020-09-15 13:20:00,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:20:00,610 INFO L479 AbstractCegarLoop]: Abstraction has 28719 states and 152760 transitions. [2020-09-15 13:20:00,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 13:20:00,610 INFO L276 IsEmpty]: Start isEmpty. Operand 28719 states and 152760 transitions. [2020-09-15 13:20:00,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 13:20:00,611 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:20:00,611 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:20:00,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2020-09-15 13:20:00,812 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]=== [2020-09-15 13:20:00,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:20:00,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1302908714, now seen corresponding path program 2 times [2020-09-15 13:20:00,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:20:00,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267787753] [2020-09-15 13:20:00,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:20:00,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:20:00,897 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 13:20:00,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267787753] [2020-09-15 13:20:00,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23485301] [2020-09-15 13:20:00,898 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:20:01,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 13:20:01,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 13:20:01,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 13:20:01,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:20:01,151 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 13:20:01,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:20:01,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 13:20:01,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812981147] [2020-09-15 13:20:01,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 13:20:01,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:20:01,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 13:20:01,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-15 13:20:01,153 INFO L87 Difference]: Start difference. First operand 28719 states and 152760 transitions. Second operand 16 states. [2020-09-15 13:20:02,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:20:02,854 INFO L93 Difference]: Finished difference Result 99876 states and 444348 transitions. [2020-09-15 13:20:02,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:20:02,854 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-15 13:20:02,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:20:03,137 INFO L225 Difference]: With dead ends: 99876 [2020-09-15 13:20:03,137 INFO L226 Difference]: Without dead ends: 99855 [2020-09-15 13:20:03,137 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 [2020-09-15 13:20:04,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99855 states. [2020-09-15 13:20:05,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99855 to 28343. [2020-09-15 13:20:05,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28343 states. [2020-09-15 13:20:05,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28343 states to 28343 states and 150639 transitions. [2020-09-15 13:20:05,910 INFO L78 Accepts]: Start accepts. Automaton has 28343 states and 150639 transitions. Word has length 21 [2020-09-15 13:20:05,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:20:05,911 INFO L479 AbstractCegarLoop]: Abstraction has 28343 states and 150639 transitions. [2020-09-15 13:20:05,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 13:20:05,911 INFO L276 IsEmpty]: Start isEmpty. Operand 28343 states and 150639 transitions. [2020-09-15 13:20:05,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 13:20:05,912 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:20:05,912 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:20:06,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:20:06,113 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]=== [2020-09-15 13:20:06,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:20:06,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1149181014, now seen corresponding path program 3 times [2020-09-15 13:20:06,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:20:06,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590007248] [2020-09-15 13:20:06,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:20:06,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:20:06,206 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 13:20:06,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590007248] [2020-09-15 13:20:06,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658868385] [2020-09-15 13:20:06,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-15 13:20:06,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-15 13:20:06,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 13:20:06,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 13:20:06,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:20:06,456 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 13:20:06,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:20:06,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 13:20:06,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624894800] [2020-09-15 13:20:06,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 13:20:06,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:20:06,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 13:20:06,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-15 13:20:06,458 INFO L87 Difference]: Start difference. First operand 28343 states and 150639 transitions. Second operand 16 states. [2020-09-15 13:20:08,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:20:08,254 INFO L93 Difference]: Finished difference Result 100071 states and 445291 transitions. [2020-09-15 13:20:08,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:20:08,255 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-15 13:20:08,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:20:08,546 INFO L225 Difference]: With dead ends: 100071 [2020-09-15 13:20:08,546 INFO L226 Difference]: Without dead ends: 100055 [2020-09-15 13:20:08,546 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 [2020-09-15 13:20:12,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100055 states. [2020-09-15 13:20:13,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100055 to 27654. [2020-09-15 13:20:13,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27654 states. [2020-09-15 13:20:13,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27654 states to 27654 states and 147080 transitions. [2020-09-15 13:20:13,225 INFO L78 Accepts]: Start accepts. Automaton has 27654 states and 147080 transitions. Word has length 21 [2020-09-15 13:20:13,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:20:13,225 INFO L479 AbstractCegarLoop]: Abstraction has 27654 states and 147080 transitions. [2020-09-15 13:20:13,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 13:20:13,226 INFO L276 IsEmpty]: Start isEmpty. Operand 27654 states and 147080 transitions. [2020-09-15 13:20:13,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 13:20:13,226 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:20:13,227 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:20:13,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2020-09-15 13:20:13,427 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]=== [2020-09-15 13:20:13,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:20:13,428 INFO L82 PathProgramCache]: Analyzing trace with hash 315341610, now seen corresponding path program 4 times [2020-09-15 13:20:13,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:20:13,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517995452] [2020-09-15 13:20:13,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:20:13,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:20:13,519 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 13:20:13,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517995452] [2020-09-15 13:20:13,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761522334] [2020-09-15 13:20:13,520 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:20:13,637 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 13:20:13,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 13:20:13,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 13:20:13,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:20:13,776 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 13:20:13,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:20:13,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 13:20:13,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869282101] [2020-09-15 13:20:13,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 13:20:13,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:20:13,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 13:20:13,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-15 13:20:13,778 INFO L87 Difference]: Start difference. First operand 27654 states and 147080 transitions. Second operand 16 states. [2020-09-15 13:20:15,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:20:15,355 INFO L93 Difference]: Finished difference Result 99523 states and 442763 transitions. [2020-09-15 13:20:15,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:20:15,356 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-15 13:20:15,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:20:16,319 INFO L225 Difference]: With dead ends: 99523 [2020-09-15 13:20:16,319 INFO L226 Difference]: Without dead ends: 99502 [2020-09-15 13:20:16,320 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 [2020-09-15 13:20:17,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99502 states. [2020-09-15 13:20:18,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99502 to 27278. [2020-09-15 13:20:18,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27278 states. [2020-09-15 13:20:18,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27278 states to 27278 states and 144959 transitions. [2020-09-15 13:20:18,353 INFO L78 Accepts]: Start accepts. Automaton has 27278 states and 144959 transitions. Word has length 21 [2020-09-15 13:20:18,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:20:18,353 INFO L479 AbstractCegarLoop]: Abstraction has 27278 states and 144959 transitions. [2020-09-15 13:20:18,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 13:20:18,353 INFO L276 IsEmpty]: Start isEmpty. Operand 27278 states and 144959 transitions. [2020-09-15 13:20:18,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 13:20:18,354 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:20:18,354 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:20:18,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2020-09-15 13:20:18,555 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]=== [2020-09-15 13:20:18,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:20:18,556 INFO L82 PathProgramCache]: Analyzing trace with hash -822012438, now seen corresponding path program 5 times [2020-09-15 13:20:18,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:20:18,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871762223] [2020-09-15 13:20:18,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:20:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:20:18,648 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 13:20:18,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871762223] [2020-09-15 13:20:18,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:20:18,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 13:20:18,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266459083] [2020-09-15 13:20:18,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 13:20:18,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:20:18,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 13:20:18,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 13:20:18,650 INFO L87 Difference]: Start difference. First operand 27278 states and 144959 transitions. Second operand 9 states. [2020-09-15 13:20:22,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:20:22,014 INFO L93 Difference]: Finished difference Result 99710 states and 443686 transitions. [2020-09-15 13:20:22,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:20:22,015 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-15 13:20:22,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:20:22,315 INFO L225 Difference]: With dead ends: 99710 [2020-09-15 13:20:22,315 INFO L226 Difference]: Without dead ends: 99694 [2020-09-15 13:20:22,316 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 [2020-09-15 13:20:23,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99694 states. [2020-09-15 13:20:24,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99694 to 26597. [2020-09-15 13:20:24,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26597 states. [2020-09-15 13:20:24,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26597 states to 26597 states and 141420 transitions. [2020-09-15 13:20:24,444 INFO L78 Accepts]: Start accepts. Automaton has 26597 states and 141420 transitions. Word has length 21 [2020-09-15 13:20:24,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:20:24,444 INFO L479 AbstractCegarLoop]: Abstraction has 26597 states and 141420 transitions. [2020-09-15 13:20:24,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 13:20:24,444 INFO L276 IsEmpty]: Start isEmpty. Operand 26597 states and 141420 transitions. [2020-09-15 13:20:24,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 13:20:24,445 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:20:24,445 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:20:24,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2020-09-15 13:20:24,446 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]=== [2020-09-15 13:20:24,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:20:24,446 INFO L82 PathProgramCache]: Analyzing trace with hash -848707158, now seen corresponding path program 6 times [2020-09-15 13:20:24,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:20:24,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389625655] [2020-09-15 13:20:24,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:20:24,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:20:24,539 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 13:20:24,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389625655] [2020-09-15 13:20:24,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:20:24,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 13:20:24,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545322845] [2020-09-15 13:20:24,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 13:20:24,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:20:24,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 13:20:24,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 13:20:24,541 INFO L87 Difference]: Start difference. First operand 26597 states and 141420 transitions. Second operand 9 states. [2020-09-15 13:20:26,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:20:26,549 INFO L93 Difference]: Finished difference Result 98863 states and 439458 transitions. [2020-09-15 13:20:26,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:20:26,550 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-15 13:20:26,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:20:26,837 INFO L225 Difference]: With dead ends: 98863 [2020-09-15 13:20:26,837 INFO L226 Difference]: Without dead ends: 98841 [2020-09-15 13:20:26,837 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 [2020-09-15 13:20:27,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98841 states. [2020-09-15 13:20:31,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98841 to 25744. [2020-09-15 13:20:31,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25744 states. [2020-09-15 13:20:31,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25744 states to 25744 states and 137181 transitions. [2020-09-15 13:20:31,633 INFO L78 Accepts]: Start accepts. Automaton has 25744 states and 137181 transitions. Word has length 21 [2020-09-15 13:20:31,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:20:31,633 INFO L479 AbstractCegarLoop]: Abstraction has 25744 states and 137181 transitions. [2020-09-15 13:20:31,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 13:20:31,633 INFO L276 IsEmpty]: Start isEmpty. Operand 25744 states and 137181 transitions. [2020-09-15 13:20:31,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 13:20:31,634 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:20:31,634 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:20:31,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2020-09-15 13:20:31,635 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]=== [2020-09-15 13:20:31,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:20:31,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1818695965, now seen corresponding path program 1 times [2020-09-15 13:20:31,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:20:31,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935871031] [2020-09-15 13:20:31,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:20:31,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:20:31,681 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 13:20:31,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935871031] [2020-09-15 13:20:31,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:20:31,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 13:20:31,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222650155] [2020-09-15 13:20:31,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 13:20:31,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:20:31,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 13:20:31,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 13:20:31,683 INFO L87 Difference]: Start difference. First operand 25744 states and 137181 transitions. Second operand 5 states. [2020-09-15 13:20:32,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:20:32,061 INFO L93 Difference]: Finished difference Result 46463 states and 236107 transitions. [2020-09-15 13:20:32,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 13:20:32,062 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-15 13:20:32,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:20:32,201 INFO L225 Difference]: With dead ends: 46463 [2020-09-15 13:20:32,201 INFO L226 Difference]: Without dead ends: 46417 [2020-09-15 13:20:32,201 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 [2020-09-15 13:20:32,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46417 states. [2020-09-15 13:20:33,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46417 to 31960. [2020-09-15 13:20:33,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31960 states. [2020-09-15 13:20:33,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31960 states to 31960 states and 171209 transitions. [2020-09-15 13:20:33,639 INFO L78 Accepts]: Start accepts. Automaton has 31960 states and 171209 transitions. Word has length 21 [2020-09-15 13:20:33,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:20:33,640 INFO L479 AbstractCegarLoop]: Abstraction has 31960 states and 171209 transitions. [2020-09-15 13:20:33,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 13:20:33,640 INFO L276 IsEmpty]: Start isEmpty. Operand 31960 states and 171209 transitions. [2020-09-15 13:20:33,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 13:20:33,642 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:20:33,642 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:20:33,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2020-09-15 13:20:33,642 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]=== [2020-09-15 13:20:33,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:20:33,642 INFO L82 PathProgramCache]: Analyzing trace with hash 605532395, now seen corresponding path program 1 times [2020-09-15 13:20:33,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:20:33,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201054490] [2020-09-15 13:20:33,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:20:33,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:20:33,711 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 13:20:33,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201054490] [2020-09-15 13:20:33,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087381295] [2020-09-15 13:20:33,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:20:33,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:20:33,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 13:20:33,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:20:33,917 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 13:20:33,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:20:33,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 13:20:33,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607762625] [2020-09-15 13:20:33,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 13:20:33,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:20:33,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 13:20:33,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-15 13:20:33,919 INFO L87 Difference]: Start difference. First operand 31960 states and 171209 transitions. Second operand 12 states. [2020-09-15 13:20:35,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:20:35,382 INFO L93 Difference]: Finished difference Result 75380 states and 361389 transitions. [2020-09-15 13:20:35,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 13:20:35,383 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-15 13:20:35,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:20:35,610 INFO L225 Difference]: With dead ends: 75380 [2020-09-15 13:20:35,610 INFO L226 Difference]: Without dead ends: 75344 [2020-09-15 13:20:35,611 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 [2020-09-15 13:20:36,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75344 states. [2020-09-15 13:20:37,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75344 to 32974. [2020-09-15 13:20:37,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32974 states. [2020-09-15 13:20:37,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32974 states to 32974 states and 176363 transitions. [2020-09-15 13:20:37,487 INFO L78 Accepts]: Start accepts. Automaton has 32974 states and 176363 transitions. Word has length 23 [2020-09-15 13:20:37,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:20:37,488 INFO L479 AbstractCegarLoop]: Abstraction has 32974 states and 176363 transitions. [2020-09-15 13:20:37,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 13:20:37,488 INFO L276 IsEmpty]: Start isEmpty. Operand 32974 states and 176363 transitions. [2020-09-15 13:20:37,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 13:20:37,489 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:20:37,489 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:20:37,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:20:37,691 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]=== [2020-09-15 13:20:37,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:20:37,691 INFO L82 PathProgramCache]: Analyzing trace with hash 768040394, now seen corresponding path program 1 times [2020-09-15 13:20:37,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:20:37,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070003514] [2020-09-15 13:20:37,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:20:37,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:20:37,762 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 13:20:37,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070003514] [2020-09-15 13:20:37,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205275818] [2020-09-15 13:20:37,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:20:37,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:20:37,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 13:20:37,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:20:37,963 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 13:20:37,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:20:37,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 13:20:37,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603762852] [2020-09-15 13:20:37,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 13:20:37,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:20:37,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 13:20:37,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-15 13:20:37,965 INFO L87 Difference]: Start difference. First operand 32974 states and 176363 transitions. Second operand 12 states. [2020-09-15 13:20:39,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:20:39,346 INFO L93 Difference]: Finished difference Result 79487 states and 381757 transitions. [2020-09-15 13:20:39,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 13:20:39,347 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-15 13:20:39,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:20:39,591 INFO L225 Difference]: With dead ends: 79487 [2020-09-15 13:20:39,591 INFO L226 Difference]: Without dead ends: 79445 [2020-09-15 13:20:39,591 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 [2020-09-15 13:20:40,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79445 states. [2020-09-15 13:20:41,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79445 to 33981. [2020-09-15 13:20:41,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33981 states. [2020-09-15 13:20:41,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33981 states to 33981 states and 181710 transitions. [2020-09-15 13:20:41,558 INFO L78 Accepts]: Start accepts. Automaton has 33981 states and 181710 transitions. Word has length 23 [2020-09-15 13:20:41,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:20:41,558 INFO L479 AbstractCegarLoop]: Abstraction has 33981 states and 181710 transitions. [2020-09-15 13:20:41,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 13:20:41,558 INFO L276 IsEmpty]: Start isEmpty. Operand 33981 states and 181710 transitions. [2020-09-15 13:20:41,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 13:20:41,560 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:20:41,560 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:20:41,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:20:41,761 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]=== [2020-09-15 13:20:41,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:20:41,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1041867770, now seen corresponding path program 1 times [2020-09-15 13:20:41,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:20:41,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210891110] [2020-09-15 13:20:41,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:20:41,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:20:41,830 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 13:20:41,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210891110] [2020-09-15 13:20:41,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369064084] [2020-09-15 13:20:41,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:20:41,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:20:41,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 13:20:41,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:20:42,030 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 13:20:42,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:20:42,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 13:20:42,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780077857] [2020-09-15 13:20:42,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 13:20:42,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:20:42,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 13:20:42,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-15 13:20:42,031 INFO L87 Difference]: Start difference. First operand 33981 states and 181710 transitions. Second operand 12 states. [2020-09-15 13:20:43,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:20:43,306 INFO L93 Difference]: Finished difference Result 82728 states and 398553 transitions. [2020-09-15 13:20:43,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 13:20:43,307 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-15 13:20:43,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:20:43,569 INFO L225 Difference]: With dead ends: 82728 [2020-09-15 13:20:43,569 INFO L226 Difference]: Without dead ends: 82673 [2020-09-15 13:20:43,570 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 [2020-09-15 13:20:44,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82673 states. [2020-09-15 13:20:45,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82673 to 34821. [2020-09-15 13:20:45,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34821 states. [2020-09-15 13:20:45,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34821 states to 34821 states and 186422 transitions. [2020-09-15 13:20:45,604 INFO L78 Accepts]: Start accepts. Automaton has 34821 states and 186422 transitions. Word has length 23 [2020-09-15 13:20:45,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:20:45,604 INFO L479 AbstractCegarLoop]: Abstraction has 34821 states and 186422 transitions. [2020-09-15 13:20:45,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 13:20:45,604 INFO L276 IsEmpty]: Start isEmpty. Operand 34821 states and 186422 transitions. [2020-09-15 13:20:45,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 13:20:45,606 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:20:45,606 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:20:45,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:20:45,807 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]=== [2020-09-15 13:20:45,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:20:45,808 INFO L82 PathProgramCache]: Analyzing trace with hash -284839030, now seen corresponding path program 2 times [2020-09-15 13:20:45,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:20:45,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826315443] [2020-09-15 13:20:45,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:20:45,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:20:45,877 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 13:20:45,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826315443] [2020-09-15 13:20:45,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:20:45,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 13:20:45,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736387557] [2020-09-15 13:20:45,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 13:20:45,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:20:45,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 13:20:45,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 13:20:45,879 INFO L87 Difference]: Start difference. First operand 34821 states and 186422 transitions. Second operand 7 states. [2020-09-15 13:20:47,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:20:47,190 INFO L93 Difference]: Finished difference Result 83507 states and 402693 transitions. [2020-09-15 13:20:47,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 13:20:47,191 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-15 13:20:47,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:20:47,461 INFO L225 Difference]: With dead ends: 83507 [2020-09-15 13:20:47,461 INFO L226 Difference]: Without dead ends: 83452 [2020-09-15 13:20:47,462 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 [2020-09-15 13:20:48,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83452 states. [2020-09-15 13:20:49,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83452 to 35694. [2020-09-15 13:20:49,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35694 states. [2020-09-15 13:20:49,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35694 states to 35694 states and 191145 transitions. [2020-09-15 13:20:49,492 INFO L78 Accepts]: Start accepts. Automaton has 35694 states and 191145 transitions. Word has length 23 [2020-09-15 13:20:49,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:20:49,492 INFO L479 AbstractCegarLoop]: Abstraction has 35694 states and 191145 transitions. [2020-09-15 13:20:49,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 13:20:49,493 INFO L276 IsEmpty]: Start isEmpty. Operand 35694 states and 191145 transitions. [2020-09-15 13:20:49,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 13:20:49,495 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:20:49,495 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:20:49,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2020-09-15 13:20:49,495 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]=== [2020-09-15 13:20:49,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:20:49,495 INFO L82 PathProgramCache]: Analyzing trace with hash -284850438, now seen corresponding path program 2 times [2020-09-15 13:20:49,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:20:49,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701016998] [2020-09-15 13:20:49,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:20:49,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:20:49,560 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 13:20:49,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701016998] [2020-09-15 13:20:49,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:20:49,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 13:20:49,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899058190] [2020-09-15 13:20:49,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 13:20:49,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:20:49,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 13:20:49,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 13:20:49,562 INFO L87 Difference]: Start difference. First operand 35694 states and 191145 transitions. Second operand 7 states. [2020-09-15 13:20:50,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:20:50,457 INFO L93 Difference]: Finished difference Result 83523 states and 402462 transitions. [2020-09-15 13:20:50,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 13:20:50,458 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-15 13:20:50,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:20:50,721 INFO L225 Difference]: With dead ends: 83523 [2020-09-15 13:20:50,721 INFO L226 Difference]: Without dead ends: 83468 [2020-09-15 13:20:50,721 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 [2020-09-15 13:20:52,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83468 states. [2020-09-15 13:20:53,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83468 to 36306. [2020-09-15 13:20:53,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36306 states. [2020-09-15 13:20:53,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36306 states to 36306 states and 194552 transitions. [2020-09-15 13:20:53,252 INFO L78 Accepts]: Start accepts. Automaton has 36306 states and 194552 transitions. Word has length 23 [2020-09-15 13:20:53,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:20:53,253 INFO L479 AbstractCegarLoop]: Abstraction has 36306 states and 194552 transitions. [2020-09-15 13:20:53,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 13:20:53,253 INFO L276 IsEmpty]: Start isEmpty. Operand 36306 states and 194552 transitions. [2020-09-15 13:20:53,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 13:20:53,255 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:20:53,255 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:20:53,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2020-09-15 13:20:53,255 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]=== [2020-09-15 13:20:53,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:20:53,255 INFO L82 PathProgramCache]: Analyzing trace with hash -284866837, now seen corresponding path program 2 times [2020-09-15 13:20:53,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:20:53,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179715094] [2020-09-15 13:20:53,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:20:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:20:53,322 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 13:20:53,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179715094] [2020-09-15 13:20:53,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:20:53,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 13:20:53,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917158662] [2020-09-15 13:20:53,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 13:20:53,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:20:53,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 13:20:53,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 13:20:53,324 INFO L87 Difference]: Start difference. First operand 36306 states and 194552 transitions. Second operand 7 states. [2020-09-15 13:20:54,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:20:54,137 INFO L93 Difference]: Finished difference Result 83918 states and 404136 transitions. [2020-09-15 13:20:54,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 13:20:54,138 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-15 13:20:54,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:20:54,398 INFO L225 Difference]: With dead ends: 83918 [2020-09-15 13:20:54,398 INFO L226 Difference]: Without dead ends: 83863 [2020-09-15 13:20:54,398 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 [2020-09-15 13:20:55,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83863 states. [2020-09-15 13:20:56,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83863 to 37062. [2020-09-15 13:20:56,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37062 states. [2020-09-15 13:20:56,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37062 states to 37062 states and 198528 transitions. [2020-09-15 13:20:56,920 INFO L78 Accepts]: Start accepts. Automaton has 37062 states and 198528 transitions. Word has length 23 [2020-09-15 13:20:56,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:20:56,920 INFO L479 AbstractCegarLoop]: Abstraction has 37062 states and 198528 transitions. [2020-09-15 13:20:56,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 13:20:56,921 INFO L276 IsEmpty]: Start isEmpty. Operand 37062 states and 198528 transitions. [2020-09-15 13:20:56,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 13:20:56,923 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:20:56,923 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:20:56,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2020-09-15 13:20:56,924 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]=== [2020-09-15 13:20:56,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:20:56,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1146013160, now seen corresponding path program 1 times [2020-09-15 13:20:56,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:20:56,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693986557] [2020-09-15 13:20:56,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:20:56,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:20:57,023 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 13:20:57,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693986557] [2020-09-15 13:20:57,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561835853] [2020-09-15 13:20:57,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:20:57,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:20:57,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 13:20:57,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:20:57,278 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 13:20:57,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:20:57,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 13:20:57,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238485164] [2020-09-15 13:20:57,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 13:20:57,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:20:57,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 13:20:57,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-15 13:20:57,280 INFO L87 Difference]: Start difference. First operand 37062 states and 198528 transitions. Second operand 16 states. [2020-09-15 13:20:59,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:20:59,324 INFO L93 Difference]: Finished difference Result 122892 states and 561130 transitions. [2020-09-15 13:20:59,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:20:59,324 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 13:20:59,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:21:00,353 INFO L225 Difference]: With dead ends: 122892 [2020-09-15 13:21:00,354 INFO L226 Difference]: Without dead ends: 122862 [2020-09-15 13:21:00,354 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 [2020-09-15 13:21:01,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122862 states. [2020-09-15 13:21:02,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122862 to 36727. [2020-09-15 13:21:02,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36727 states. [2020-09-15 13:21:02,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36727 states to 36727 states and 196466 transitions. [2020-09-15 13:21:02,998 INFO L78 Accepts]: Start accepts. Automaton has 36727 states and 196466 transitions. Word has length 25 [2020-09-15 13:21:02,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:21:02,998 INFO L479 AbstractCegarLoop]: Abstraction has 36727 states and 196466 transitions. [2020-09-15 13:21:02,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 13:21:02,999 INFO L276 IsEmpty]: Start isEmpty. Operand 36727 states and 196466 transitions. [2020-09-15 13:21:03,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 13:21:03,001 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:21:03,002 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:21:03,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2020-09-15 13:21:03,202 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]=== [2020-09-15 13:21:03,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:21:03,203 INFO L82 PathProgramCache]: Analyzing trace with hash -872185784, now seen corresponding path program 1 times [2020-09-15 13:21:03,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:21:03,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733909962] [2020-09-15 13:21:03,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:21:03,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:21:03,300 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 13:21:03,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733909962] [2020-09-15 13:21:03,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815565607] [2020-09-15 13:21:03,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:21:03,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:21:03,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 13:21:03,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:21:03,564 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 13:21:03,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:21:03,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 13:21:03,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627284802] [2020-09-15 13:21:03,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 13:21:03,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:21:03,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 13:21:03,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-15 13:21:03,567 INFO L87 Difference]: Start difference. First operand 36727 states and 196466 transitions. Second operand 16 states. [2020-09-15 13:21:05,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:21:05,872 INFO L93 Difference]: Finished difference Result 121590 states and 554657 transitions. [2020-09-15 13:21:05,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:21:05,872 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 13:21:05,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:21:06,239 INFO L225 Difference]: With dead ends: 121590 [2020-09-15 13:21:06,239 INFO L226 Difference]: Without dead ends: 121560 [2020-09-15 13:21:06,239 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 [2020-09-15 13:21:07,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121560 states. [2020-09-15 13:21:11,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121560 to 36513. [2020-09-15 13:21:11,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36513 states. [2020-09-15 13:21:11,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36513 states to 36513 states and 195090 transitions. [2020-09-15 13:21:11,931 INFO L78 Accepts]: Start accepts. Automaton has 36513 states and 195090 transitions. Word has length 25 [2020-09-15 13:21:11,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:21:11,931 INFO L479 AbstractCegarLoop]: Abstraction has 36513 states and 195090 transitions. [2020-09-15 13:21:11,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 13:21:11,931 INFO L276 IsEmpty]: Start isEmpty. Operand 36513 states and 195090 transitions. [2020-09-15 13:21:11,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 13:21:11,935 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:21:11,935 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:21:12,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:21:12,144 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]=== [2020-09-15 13:21:12,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:21:12,144 INFO L82 PathProgramCache]: Analyzing trace with hash 2096074712, now seen corresponding path program 2 times [2020-09-15 13:21:12,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:21:12,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138389395] [2020-09-15 13:21:12,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:21:12,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:21:12,241 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 13:21:12,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138389395] [2020-09-15 13:21:12,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561297952] [2020-09-15 13:21:12,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:21:12,364 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 13:21:12,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 13:21:12,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 13:21:12,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:21:12,502 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 13:21:12,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:21:12,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 13:21:12,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514750783] [2020-09-15 13:21:12,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 13:21:12,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:21:12,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 13:21:12,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-15 13:21:12,504 INFO L87 Difference]: Start difference. First operand 36513 states and 195090 transitions. Second operand 16 states. [2020-09-15 13:21:14,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:21:14,355 INFO L93 Difference]: Finished difference Result 120395 states and 548664 transitions. [2020-09-15 13:21:14,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:21:14,356 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 13:21:14,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:21:14,710 INFO L225 Difference]: With dead ends: 120395 [2020-09-15 13:21:14,710 INFO L226 Difference]: Without dead ends: 120362 [2020-09-15 13:21:14,710 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 [2020-09-15 13:21:16,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120362 states. [2020-09-15 13:21:17,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120362 to 36444. [2020-09-15 13:21:17,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36444 states. [2020-09-15 13:21:17,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36444 states to 36444 states and 194571 transitions. [2020-09-15 13:21:17,956 INFO L78 Accepts]: Start accepts. Automaton has 36444 states and 194571 transitions. Word has length 25 [2020-09-15 13:21:17,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:21:17,957 INFO L479 AbstractCegarLoop]: Abstraction has 36444 states and 194571 transitions. [2020-09-15 13:21:17,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 13:21:17,957 INFO L276 IsEmpty]: Start isEmpty. Operand 36444 states and 194571 transitions. [2020-09-15 13:21:17,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 13:21:17,959 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:21:17,959 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:21:18,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-09-15 13:21:18,160 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]=== [2020-09-15 13:21:18,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:21:18,161 INFO L82 PathProgramCache]: Analyzing trace with hash 2096063304, now seen corresponding path program 2 times [2020-09-15 13:21:18,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:21:18,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235922992] [2020-09-15 13:21:18,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:21:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:21:18,248 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 13:21:18,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235922992] [2020-09-15 13:21:18,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382152148] [2020-09-15 13:21:18,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:21:18,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 13:21:18,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 13:21:18,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 13:21:18,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:21:18,485 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 13:21:18,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:21:18,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 13:21:18,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699908301] [2020-09-15 13:21:18,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 13:21:18,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:21:18,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 13:21:18,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-15 13:21:18,487 INFO L87 Difference]: Start difference. First operand 36444 states and 194571 transitions. Second operand 16 states. [2020-09-15 13:21:22,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:21:22,661 INFO L93 Difference]: Finished difference Result 119346 states and 543724 transitions. [2020-09-15 13:21:22,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:21:22,662 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 13:21:22,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:21:23,024 INFO L225 Difference]: With dead ends: 119346 [2020-09-15 13:21:23,024 INFO L226 Difference]: Without dead ends: 119313 [2020-09-15 13:21:23,024 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 [2020-09-15 13:21:24,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119313 states. [2020-09-15 13:21:25,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119313 to 36040. [2020-09-15 13:21:25,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36040 states. [2020-09-15 13:21:26,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36040 states to 36040 states and 192287 transitions. [2020-09-15 13:21:26,066 INFO L78 Accepts]: Start accepts. Automaton has 36040 states and 192287 transitions. Word has length 25 [2020-09-15 13:21:26,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:21:26,066 INFO L479 AbstractCegarLoop]: Abstraction has 36040 states and 192287 transitions. [2020-09-15 13:21:26,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 13:21:26,066 INFO L276 IsEmpty]: Start isEmpty. Operand 36040 states and 192287 transitions. [2020-09-15 13:21:26,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 13:21:26,069 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:21:26,069 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:21:26,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2020-09-15 13:21:26,269 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]=== [2020-09-15 13:21:26,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:21:26,270 INFO L82 PathProgramCache]: Analyzing trace with hash 582269272, now seen corresponding path program 3 times [2020-09-15 13:21:26,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:21:26,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348615189] [2020-09-15 13:21:26,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:21:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:21:26,369 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 13:21:26,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348615189] [2020-09-15 13:21:26,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105572611] [2020-09-15 13:21:26,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:21:26,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-09-15 13:21:26,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 13:21:26,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 13:21:26,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:21:26,636 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 13:21:26,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:21:26,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 13:21:26,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744320232] [2020-09-15 13:21:26,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 13:21:26,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:21:26,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 13:21:26,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-15 13:21:26,637 INFO L87 Difference]: Start difference. First operand 36040 states and 192287 transitions. Second operand 16 states. [2020-09-15 13:21:28,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:21:28,711 INFO L93 Difference]: Finished difference Result 119770 states and 545635 transitions. [2020-09-15 13:21:28,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:21:28,712 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 13:21:28,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:21:29,068 INFO L225 Difference]: With dead ends: 119770 [2020-09-15 13:21:29,068 INFO L226 Difference]: Without dead ends: 119740 [2020-09-15 13:21:29,068 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 [2020-09-15 13:21:30,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119740 states. [2020-09-15 13:21:34,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119740 to 35471. [2020-09-15 13:21:34,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35471 states. [2020-09-15 13:21:34,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35471 states to 35471 states and 189238 transitions. [2020-09-15 13:21:34,919 INFO L78 Accepts]: Start accepts. Automaton has 35471 states and 189238 transitions. Word has length 25 [2020-09-15 13:21:34,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:21:34,919 INFO L479 AbstractCegarLoop]: Abstraction has 35471 states and 189238 transitions. [2020-09-15 13:21:34,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 13:21:34,919 INFO L276 IsEmpty]: Start isEmpty. Operand 35471 states and 189238 transitions. [2020-09-15 13:21:34,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 13:21:34,921 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:21:34,922 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:21:35,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2020-09-15 13:21:35,131 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]=== [2020-09-15 13:21:35,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:21:35,131 INFO L82 PathProgramCache]: Analyzing trace with hash 679178599, now seen corresponding path program 1 times [2020-09-15 13:21:35,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:21:35,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068725345] [2020-09-15 13:21:35,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:21:35,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:21:35,216 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 13:21:35,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068725345] [2020-09-15 13:21:35,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110824097] [2020-09-15 13:21:35,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:21:35,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:21:35,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 13:21:35,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:21:35,494 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 13:21:35,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:21:35,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 13:21:35,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557907316] [2020-09-15 13:21:35,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 13:21:35,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:21:35,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 13:21:35,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-15 13:21:35,496 INFO L87 Difference]: Start difference. First operand 35471 states and 189238 transitions. Second operand 16 states. [2020-09-15 13:21:37,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:21:37,466 INFO L93 Difference]: Finished difference Result 121131 states and 553230 transitions. [2020-09-15 13:21:37,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:21:37,467 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 13:21:37,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:21:37,843 INFO L225 Difference]: With dead ends: 121131 [2020-09-15 13:21:37,843 INFO L226 Difference]: Without dead ends: 121101 [2020-09-15 13:21:37,844 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 [2020-09-15 13:21:39,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121101 states. [2020-09-15 13:21:40,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121101 to 35374. [2020-09-15 13:21:40,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35374 states. [2020-09-15 13:21:41,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35374 states to 35374 states and 188534 transitions. [2020-09-15 13:21:41,116 INFO L78 Accepts]: Start accepts. Automaton has 35374 states and 188534 transitions. Word has length 25 [2020-09-15 13:21:41,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:21:41,116 INFO L479 AbstractCegarLoop]: Abstraction has 35374 states and 188534 transitions. [2020-09-15 13:21:41,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 13:21:41,117 INFO L276 IsEmpty]: Start isEmpty. Operand 35374 states and 188534 transitions. [2020-09-15 13:21:41,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 13:21:41,119 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:21:41,119 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:21:41,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2020-09-15 13:21:41,320 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]=== [2020-09-15 13:21:41,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:21:41,320 INFO L82 PathProgramCache]: Analyzing trace with hash -647539609, now seen corresponding path program 2 times [2020-09-15 13:21:41,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:21:41,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436930328] [2020-09-15 13:21:41,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:21:41,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:21:41,417 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 13:21:41,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436930328] [2020-09-15 13:21:41,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402978439] [2020-09-15 13:21:41,417 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:21:41,539 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 13:21:41,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 13:21:41,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 13:21:41,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:21:41,677 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 13:21:41,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:21:41,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 13:21:41,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514639507] [2020-09-15 13:21:41,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 13:21:41,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:21:41,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 13:21:41,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-15 13:21:41,679 INFO L87 Difference]: Start difference. First operand 35374 states and 188534 transitions. Second operand 16 states. [2020-09-15 13:21:44,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:21:44,222 INFO L93 Difference]: Finished difference Result 120194 states and 548412 transitions. [2020-09-15 13:21:44,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:21:44,223 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 13:21:44,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:21:44,590 INFO L225 Difference]: With dead ends: 120194 [2020-09-15 13:21:44,590 INFO L226 Difference]: Without dead ends: 120154 [2020-09-15 13:21:44,590 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 [2020-09-15 13:21:45,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120154 states. [2020-09-15 13:21:50,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120154 to 35219. [2020-09-15 13:21:50,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35219 states. [2020-09-15 13:21:50,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35219 states to 35219 states and 187630 transitions. [2020-09-15 13:21:50,406 INFO L78 Accepts]: Start accepts. Automaton has 35219 states and 187630 transitions. Word has length 25 [2020-09-15 13:21:50,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:21:50,407 INFO L479 AbstractCegarLoop]: Abstraction has 35219 states and 187630 transitions. [2020-09-15 13:21:50,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 13:21:50,407 INFO L276 IsEmpty]: Start isEmpty. Operand 35219 states and 187630 transitions. [2020-09-15 13:21:50,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 13:21:50,409 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:21:50,409 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:21:50,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:21:50,610 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]=== [2020-09-15 13:21:50,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:21:50,611 INFO L82 PathProgramCache]: Analyzing trace with hash -647556008, now seen corresponding path program 4 times [2020-09-15 13:21:50,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:21:50,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816203073] [2020-09-15 13:21:50,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:21:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:21:50,707 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 13:21:50,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816203073] [2020-09-15 13:21:50,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073152007] [2020-09-15 13:21:50,708 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:21:50,829 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 13:21:50,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 13:21:50,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 13:21:50,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:21:50,966 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 13:21:50,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:21:50,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 13:21:50,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962783818] [2020-09-15 13:21:50,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 13:21:50,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:21:50,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 13:21:50,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-15 13:21:50,968 INFO L87 Difference]: Start difference. First operand 35219 states and 187630 transitions. Second operand 16 states. [2020-09-15 13:21:52,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:21:52,720 INFO L93 Difference]: Finished difference Result 118559 states and 539905 transitions. [2020-09-15 13:21:52,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:21:52,721 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 13:21:52,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:21:53,078 INFO L225 Difference]: With dead ends: 118559 [2020-09-15 13:21:53,078 INFO L226 Difference]: Without dead ends: 118526 [2020-09-15 13:21:53,078 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 [2020-09-15 13:21:54,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118526 states. [2020-09-15 13:21:56,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118526 to 34815. [2020-09-15 13:21:56,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34815 states. [2020-09-15 13:21:56,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34815 states to 34815 states and 185346 transitions. [2020-09-15 13:21:56,302 INFO L78 Accepts]: Start accepts. Automaton has 34815 states and 185346 transitions. Word has length 25 [2020-09-15 13:21:56,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:21:56,302 INFO L479 AbstractCegarLoop]: Abstraction has 34815 states and 185346 transitions. [2020-09-15 13:21:56,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 13:21:56,302 INFO L276 IsEmpty]: Start isEmpty. Operand 34815 states and 185346 transitions. [2020-09-15 13:21:56,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 13:21:56,305 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:21:56,305 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:21:56,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2020-09-15 13:21:56,510 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]=== [2020-09-15 13:21:56,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:21:56,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1056609241, now seen corresponding path program 3 times [2020-09-15 13:21:56,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:21:56,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642584576] [2020-09-15 13:21:56,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:21:56,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:21:56,605 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 13:21:56,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642584576] [2020-09-15 13:21:56,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620056262] [2020-09-15 13:21:56,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:21:56,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-15 13:21:56,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 13:21:56,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 13:21:56,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:21:56,857 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 13:21:56,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:21:56,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 13:21:56,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393547180] [2020-09-15 13:21:56,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 13:21:56,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:21:56,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 13:21:56,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-15 13:21:56,859 INFO L87 Difference]: Start difference. First operand 34815 states and 185346 transitions. Second operand 16 states. [2020-09-15 13:21:58,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:21:58,705 INFO L93 Difference]: Finished difference Result 118955 states and 542533 transitions. [2020-09-15 13:21:58,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:21:58,706 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 13:21:58,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:21:59,081 INFO L225 Difference]: With dead ends: 118955 [2020-09-15 13:21:59,081 INFO L226 Difference]: Without dead ends: 118925 [2020-09-15 13:21:59,082 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 [2020-09-15 13:22:01,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118925 states. [2020-09-15 13:22:02,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118925 to 34363. [2020-09-15 13:22:02,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34363 states. [2020-09-15 13:22:02,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34363 states to 34363 states and 182968 transitions. [2020-09-15 13:22:02,390 INFO L78 Accepts]: Start accepts. Automaton has 34363 states and 182968 transitions. Word has length 25 [2020-09-15 13:22:02,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:22:02,391 INFO L479 AbstractCegarLoop]: Abstraction has 34363 states and 182968 transitions. [2020-09-15 13:22:02,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 13:22:02,391 INFO L276 IsEmpty]: Start isEmpty. Operand 34363 states and 182968 transitions. [2020-09-15 13:22:02,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 13:22:02,393 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:22:02,394 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:22:02,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2020-09-15 13:22:02,595 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]=== [2020-09-15 13:22:02,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:22:02,595 INFO L82 PathProgramCache]: Analyzing trace with hash -989383992, now seen corresponding path program 3 times [2020-09-15 13:22:02,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:22:02,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532420998] [2020-09-15 13:22:02,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:22:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:22:02,696 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 13:22:02,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532420998] [2020-09-15 13:22:02,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133028270] [2020-09-15 13:22:02,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-15 13:22:02,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-15 13:22:02,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 13:22:02,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 13:22:02,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:22:02,931 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 13:22:02,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:22:02,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 13:22:02,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098925879] [2020-09-15 13:22:02,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 13:22:02,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:22:02,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 13:22:02,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-15 13:22:02,935 INFO L87 Difference]: Start difference. First operand 34363 states and 182968 transitions. Second operand 16 states. [2020-09-15 13:22:05,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:22:05,214 INFO L93 Difference]: Finished difference Result 117996 states and 537739 transitions. [2020-09-15 13:22:05,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:22:05,214 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 13:22:05,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:22:05,569 INFO L225 Difference]: With dead ends: 117996 [2020-09-15 13:22:05,569 INFO L226 Difference]: Without dead ends: 117966 [2020-09-15 13:22:05,569 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 [2020-09-15 13:22:06,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117966 states. [2020-09-15 13:22:08,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117966 to 34024. [2020-09-15 13:22:08,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34024 states. [2020-09-15 13:22:08,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34024 states to 34024 states and 181250 transitions. [2020-09-15 13:22:08,797 INFO L78 Accepts]: Start accepts. Automaton has 34024 states and 181250 transitions. Word has length 25 [2020-09-15 13:22:08,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:22:08,797 INFO L479 AbstractCegarLoop]: Abstraction has 34024 states and 181250 transitions. [2020-09-15 13:22:08,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 13:22:08,797 INFO L276 IsEmpty]: Start isEmpty. Operand 34024 states and 181250 transitions. [2020-09-15 13:22:08,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 13:22:08,800 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:22:08,800 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:22:09,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2020-09-15 13:22:09,001 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]=== [2020-09-15 13:22:09,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:22:09,001 INFO L82 PathProgramCache]: Analyzing trace with hash 507575079, now seen corresponding path program 4 times [2020-09-15 13:22:09,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:22:09,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782070207] [2020-09-15 13:22:09,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:22:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:22:09,097 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 13:22:09,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782070207] [2020-09-15 13:22:09,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516101299] [2020-09-15 13:22:09,098 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-15 13:22:09,221 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 13:22:09,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 13:22:09,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 13:22:09,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:22:09,357 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 13:22:09,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:22:09,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 13:22:09,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47082771] [2020-09-15 13:22:09,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 13:22:09,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:22:09,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 13:22:09,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-15 13:22:09,358 INFO L87 Difference]: Start difference. First operand 34024 states and 181250 transitions. Second operand 16 states. [2020-09-15 13:22:11,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:22:11,255 INFO L93 Difference]: Finished difference Result 119076 states and 543105 transitions. [2020-09-15 13:22:11,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:22:11,255 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 13:22:11,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:22:11,620 INFO L225 Difference]: With dead ends: 119076 [2020-09-15 13:22:11,620 INFO L226 Difference]: Without dead ends: 119036 [2020-09-15 13:22:11,620 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 [2020-09-15 13:22:13,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119036 states. [2020-09-15 13:22:14,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119036 to 33873. [2020-09-15 13:22:14,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33873 states. [2020-09-15 13:22:14,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33873 states to 33873 states and 180354 transitions. [2020-09-15 13:22:14,737 INFO L78 Accepts]: Start accepts. Automaton has 33873 states and 180354 transitions. Word has length 25 [2020-09-15 13:22:14,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:22:14,738 INFO L479 AbstractCegarLoop]: Abstraction has 33873 states and 180354 transitions. [2020-09-15 13:22:14,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 13:22:14,738 INFO L276 IsEmpty]: Start isEmpty. Operand 33873 states and 180354 transitions. [2020-09-15 13:22:14,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 13:22:14,740 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:22:14,740 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:22:14,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108 [2020-09-15 13:22:14,941 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]=== [2020-09-15 13:22:14,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:22:14,942 INFO L82 PathProgramCache]: Analyzing trace with hash 507547272, now seen corresponding path program 4 times [2020-09-15 13:22:14,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:22:14,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674871752] [2020-09-15 13:22:14,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:22:14,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:22:15,038 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 13:22:15,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674871752] [2020-09-15 13:22:15,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018996882] [2020-09-15 13:22:15,038 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-15 13:22:15,163 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 13:22:15,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 13:22:15,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 13:22:15,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:22:15,298 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 13:22:15,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:22:15,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 13:22:15,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177103634] [2020-09-15 13:22:15,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 13:22:15,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:22:15,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 13:22:15,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-15 13:22:15,300 INFO L87 Difference]: Start difference. First operand 33873 states and 180354 transitions. Second operand 16 states. [2020-09-15 13:22:17,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:22:17,819 INFO L93 Difference]: Finished difference Result 118020 states and 538147 transitions. [2020-09-15 13:22:17,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:22:17,820 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 13:22:17,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:22:18,184 INFO L225 Difference]: With dead ends: 118020 [2020-09-15 13:22:18,184 INFO L226 Difference]: Without dead ends: 117980 [2020-09-15 13:22:18,184 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 [2020-09-15 13:22:19,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117980 states. [2020-09-15 13:22:20,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117980 to 33387. [2020-09-15 13:22:20,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33387 states. [2020-09-15 13:22:20,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33387 states to 33387 states and 177693 transitions. [2020-09-15 13:22:20,699 INFO L78 Accepts]: Start accepts. Automaton has 33387 states and 177693 transitions. Word has length 25 [2020-09-15 13:22:20,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:22:20,699 INFO L479 AbstractCegarLoop]: Abstraction has 33387 states and 177693 transitions. [2020-09-15 13:22:20,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 13:22:20,699 INFO L276 IsEmpty]: Start isEmpty. Operand 33387 states and 177693 transitions. [2020-09-15 13:22:20,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 13:22:20,702 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:22:20,702 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:22:21,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:22:21,351 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]=== [2020-09-15 13:22:21,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:22:21,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1147615783, now seen corresponding path program 5 times [2020-09-15 13:22:21,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:22:21,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829437458] [2020-09-15 13:22:21,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:22:21,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:22:21,449 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 13:22:21,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829437458] [2020-09-15 13:22:21,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:22:21,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 13:22:21,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668896066] [2020-09-15 13:22:21,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 13:22:21,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:22:21,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 13:22:21,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 13:22:21,451 INFO L87 Difference]: Start difference. First operand 33387 states and 177693 transitions. Second operand 9 states. [2020-09-15 13:22:23,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:22:23,287 INFO L93 Difference]: Finished difference Result 118363 states and 539792 transitions. [2020-09-15 13:22:23,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:22:23,288 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 13:22:23,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:22:23,662 INFO L225 Difference]: With dead ends: 118363 [2020-09-15 13:22:23,662 INFO L226 Difference]: Without dead ends: 118333 [2020-09-15 13:22:23,662 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 [2020-09-15 13:22:24,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118333 states. [2020-09-15 13:22:26,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118333 to 32908. [2020-09-15 13:22:26,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32908 states. [2020-09-15 13:22:26,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32908 states to 32908 states and 175152 transitions. [2020-09-15 13:22:26,840 INFO L78 Accepts]: Start accepts. Automaton has 32908 states and 175152 transitions. Word has length 25 [2020-09-15 13:22:26,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:22:26,840 INFO L479 AbstractCegarLoop]: Abstraction has 32908 states and 175152 transitions. [2020-09-15 13:22:26,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 13:22:26,841 INFO L276 IsEmpty]: Start isEmpty. Operand 32908 states and 175152 transitions. [2020-09-15 13:22:26,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 13:22:26,844 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:22:26,844 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:22:26,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2020-09-15 13:22:26,844 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]=== [2020-09-15 13:22:26,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:22:26,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1147599384, now seen corresponding path program 5 times [2020-09-15 13:22:26,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:22:26,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731240824] [2020-09-15 13:22:26,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:22:26,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:22:26,943 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 13:22:26,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731240824] [2020-09-15 13:22:26,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:22:26,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 13:22:26,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555521148] [2020-09-15 13:22:26,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 13:22:26,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:22:26,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 13:22:26,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 13:22:26,945 INFO L87 Difference]: Start difference. First operand 32908 states and 175152 transitions. Second operand 9 states. [2020-09-15 13:22:28,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:22:28,678 INFO L93 Difference]: Finished difference Result 117027 states and 533313 transitions. [2020-09-15 13:22:28,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:22:28,679 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 13:22:28,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:22:29,030 INFO L225 Difference]: With dead ends: 117027 [2020-09-15 13:22:29,030 INFO L226 Difference]: Without dead ends: 116997 [2020-09-15 13:22:29,031 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 [2020-09-15 13:22:30,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116997 states. [2020-09-15 13:22:31,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116997 to 32394. [2020-09-15 13:22:31,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32394 states. [2020-09-15 13:22:32,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32394 states to 32394 states and 172458 transitions. [2020-09-15 13:22:32,008 INFO L78 Accepts]: Start accepts. Automaton has 32394 states and 172458 transitions. Word has length 25 [2020-09-15 13:22:32,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:22:32,008 INFO L479 AbstractCegarLoop]: Abstraction has 32394 states and 172458 transitions. [2020-09-15 13:22:32,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 13:22:32,008 INFO L276 IsEmpty]: Start isEmpty. Operand 32394 states and 172458 transitions. [2020-09-15 13:22:32,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 13:22:32,011 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:22:32,011 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:22:32,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2020-09-15 13:22:32,011 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]=== [2020-09-15 13:22:32,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:22:32,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1136664103, now seen corresponding path program 6 times [2020-09-15 13:22:32,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:22:32,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072230496] [2020-09-15 13:22:32,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:22:32,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:22:32,111 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 13:22:32,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072230496] [2020-09-15 13:22:32,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:22:32,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 13:22:32,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550061474] [2020-09-15 13:22:32,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 13:22:32,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:22:32,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 13:22:32,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 13:22:32,114 INFO L87 Difference]: Start difference. First operand 32394 states and 172458 transitions. Second operand 9 states. [2020-09-15 13:22:34,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:22:34,249 INFO L93 Difference]: Finished difference Result 116213 states and 529114 transitions. [2020-09-15 13:22:34,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:22:34,250 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 13:22:34,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:22:34,622 INFO L225 Difference]: With dead ends: 116213 [2020-09-15 13:22:34,622 INFO L226 Difference]: Without dead ends: 116173 [2020-09-15 13:22:34,623 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 [2020-09-15 13:22:35,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116173 states. [2020-09-15 13:22:36,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116173 to 31530. [2020-09-15 13:22:36,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31530 states. [2020-09-15 13:22:37,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31530 states to 31530 states and 168028 transitions. [2020-09-15 13:22:37,065 INFO L78 Accepts]: Start accepts. Automaton has 31530 states and 168028 transitions. Word has length 25 [2020-09-15 13:22:37,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:22:37,066 INFO L479 AbstractCegarLoop]: Abstraction has 31530 states and 168028 transitions. [2020-09-15 13:22:37,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 13:22:37,066 INFO L276 IsEmpty]: Start isEmpty. Operand 31530 states and 168028 transitions. [2020-09-15 13:22:37,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 13:22:37,068 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:22:37,068 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:22:37,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2020-09-15 13:22:37,069 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]=== [2020-09-15 13:22:37,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:22:37,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1136636296, now seen corresponding path program 5 times [2020-09-15 13:22:37,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:22:37,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655616422] [2020-09-15 13:22:37,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:22:37,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:22:37,165 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 13:22:37,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655616422] [2020-09-15 13:22:37,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:22:37,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 13:22:37,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487138597] [2020-09-15 13:22:37,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 13:22:37,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:22:37,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 13:22:37,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 13:22:37,167 INFO L87 Difference]: Start difference. First operand 31530 states and 168028 transitions. Second operand 9 states. [2020-09-15 13:22:37,588 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-09-15 13:22:39,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:22:39,207 INFO L93 Difference]: Finished difference Result 115048 states and 523573 transitions. [2020-09-15 13:22:39,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:22:39,208 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 13:22:39,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:22:39,564 INFO L225 Difference]: With dead ends: 115048 [2020-09-15 13:22:39,565 INFO L226 Difference]: Without dead ends: 115018 [2020-09-15 13:22:39,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 13:22:40,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115018 states. [2020-09-15 13:22:42,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115018 to 31199. [2020-09-15 13:22:42,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31199 states. [2020-09-15 13:22:42,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31199 states to 31199 states and 166334 transitions. [2020-09-15 13:22:42,639 INFO L78 Accepts]: Start accepts. Automaton has 31199 states and 166334 transitions. Word has length 25 [2020-09-15 13:22:42,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:22:42,639 INFO L479 AbstractCegarLoop]: Abstraction has 31199 states and 166334 transitions. [2020-09-15 13:22:42,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 13:22:42,639 INFO L276 IsEmpty]: Start isEmpty. Operand 31199 states and 166334 transitions. [2020-09-15 13:22:42,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 13:22:42,642 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:22:42,642 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:22:42,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2020-09-15 13:22:42,642 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]=== [2020-09-15 13:22:42,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:22:42,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1120904664, now seen corresponding path program 6 times [2020-09-15 13:22:42,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:22:42,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534070730] [2020-09-15 13:22:42,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:22:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:22:42,740 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 13:22:42,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534070730] [2020-09-15 13:22:42,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:22:42,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 13:22:42,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375924884] [2020-09-15 13:22:42,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 13:22:42,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:22:42,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 13:22:42,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 13:22:42,742 INFO L87 Difference]: Start difference. First operand 31199 states and 166334 transitions. Second operand 9 states. [2020-09-15 13:22:44,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:22:44,441 INFO L93 Difference]: Finished difference Result 114413 states and 520399 transitions. [2020-09-15 13:22:44,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:22:44,443 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 13:22:44,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:22:44,793 INFO L225 Difference]: With dead ends: 114413 [2020-09-15 13:22:44,793 INFO L226 Difference]: Without dead ends: 114373 [2020-09-15 13:22:44,793 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 [2020-09-15 13:22:45,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114373 states. [2020-09-15 13:22:47,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114373 to 30592. [2020-09-15 13:22:47,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30592 states. [2020-09-15 13:22:47,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30592 states to 30592 states and 163260 transitions. [2020-09-15 13:22:47,790 INFO L78 Accepts]: Start accepts. Automaton has 30592 states and 163260 transitions. Word has length 25 [2020-09-15 13:22:47,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:22:47,791 INFO L479 AbstractCegarLoop]: Abstraction has 30592 states and 163260 transitions. [2020-09-15 13:22:47,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 13:22:47,791 INFO L276 IsEmpty]: Start isEmpty. Operand 30592 states and 163260 transitions. [2020-09-15 13:22:47,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 13:22:47,793 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:22:47,793 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:22:47,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2020-09-15 13:22:47,793 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]=== [2020-09-15 13:22:47,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:22:47,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1120893256, now seen corresponding path program 6 times [2020-09-15 13:22:47,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:22:47,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903354950] [2020-09-15 13:22:47,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:22:47,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:22:47,877 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 13:22:47,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903354950] [2020-09-15 13:22:47,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:22:47,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 13:22:47,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219571089] [2020-09-15 13:22:47,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 13:22:47,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:22:47,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 13:22:47,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 13:22:47,878 INFO L87 Difference]: Start difference. First operand 30592 states and 163260 transitions. Second operand 9 states. [2020-09-15 13:22:49,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:22:49,545 INFO L93 Difference]: Finished difference Result 113466 states and 515911 transitions. [2020-09-15 13:22:49,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:22:49,545 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 13:22:49,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:22:49,890 INFO L225 Difference]: With dead ends: 113466 [2020-09-15 13:22:49,890 INFO L226 Difference]: Without dead ends: 113426 [2020-09-15 13:22:49,890 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 [2020-09-15 13:22:51,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113426 states. [2020-09-15 13:22:52,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113426 to 29802. [2020-09-15 13:22:52,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29802 states. [2020-09-15 13:22:52,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29802 states to 29802 states and 159321 transitions. [2020-09-15 13:22:52,801 INFO L78 Accepts]: Start accepts. Automaton has 29802 states and 159321 transitions. Word has length 25 [2020-09-15 13:22:52,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:22:52,801 INFO L479 AbstractCegarLoop]: Abstraction has 29802 states and 159321 transitions. [2020-09-15 13:22:52,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 13:22:52,802 INFO L276 IsEmpty]: Start isEmpty. Operand 29802 states and 159321 transitions. [2020-09-15 13:22:52,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 13:22:52,804 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:22:52,804 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:22:52,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2020-09-15 13:22:52,804 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]=== [2020-09-15 13:22:52,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:22:52,804 INFO L82 PathProgramCache]: Analyzing trace with hash 123792641, now seen corresponding path program 1 times [2020-09-15 13:22:52,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:22:52,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353240242] [2020-09-15 13:22:52,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:22:52,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:22:52,857 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-15 13:22:52,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353240242] [2020-09-15 13:22:52,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:22:52,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 13:22:52,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800177899] [2020-09-15 13:22:52,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 13:22:52,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:22:52,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 13:22:52,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 13:22:52,860 INFO L87 Difference]: Start difference. First operand 29802 states and 159321 transitions. Second operand 5 states. [2020-09-15 13:22:53,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:22:53,333 INFO L93 Difference]: Finished difference Result 53165 states and 272731 transitions. [2020-09-15 13:22:53,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 13:22:53,333 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-09-15 13:22:53,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:22:53,505 INFO L225 Difference]: With dead ends: 53165 [2020-09-15 13:22:53,505 INFO L226 Difference]: Without dead ends: 53102 [2020-09-15 13:22:53,505 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 [2020-09-15 13:22:54,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53102 states. [2020-09-15 13:22:55,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53102 to 37675. [2020-09-15 13:22:55,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37675 states. [2020-09-15 13:22:55,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37675 states to 37675 states and 201015 transitions. [2020-09-15 13:22:55,493 INFO L78 Accepts]: Start accepts. Automaton has 37675 states and 201015 transitions. Word has length 25 [2020-09-15 13:22:55,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:22:55,494 INFO L479 AbstractCegarLoop]: Abstraction has 37675 states and 201015 transitions. [2020-09-15 13:22:55,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 13:22:55,494 INFO L276 IsEmpty]: Start isEmpty. Operand 37675 states and 201015 transitions. [2020-09-15 13:22:55,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 13:22:55,497 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:22:55,497 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] [2020-09-15 13:22:55,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2020-09-15 13:22:55,497 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]=== [2020-09-15 13:22:55,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:22:55,498 INFO L82 PathProgramCache]: Analyzing trace with hash -480284107, now seen corresponding path program 1 times [2020-09-15 13:22:55,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:22:55,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448332929] [2020-09-15 13:22:55,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:22:55,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:22:55,625 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 13:22:55,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448332929] [2020-09-15 13:22:55,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011337096] [2020-09-15 13:22:55,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-15 13:22:55,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:22:55,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 13:22:55,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:22:55,904 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 13:22:55,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:22:55,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 13:22:55,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157048779] [2020-09-15 13:22:55,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 13:22:55,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:22:55,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 13:22:55,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-15 13:22:55,906 INFO L87 Difference]: Start difference. First operand 37675 states and 201015 transitions. Second operand 20 states. [2020-09-15 13:23:00,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:23:00,589 INFO L93 Difference]: Finished difference Result 186148 states and 815009 transitions. [2020-09-15 13:23:00,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 13:23:00,590 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 13:23:00,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:23:01,138 INFO L225 Difference]: With dead ends: 186148 [2020-09-15 13:23:01,138 INFO L226 Difference]: Without dead ends: 186130 [2020-09-15 13:23:01,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1882 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1283, Invalid=4723, Unknown=0, NotChecked=0, Total=6006 [2020-09-15 13:23:02,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186130 states. [2020-09-15 13:23:05,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186130 to 37780. [2020-09-15 13:23:05,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37780 states. [2020-09-15 13:23:05,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37780 states to 37780 states and 201508 transitions. [2020-09-15 13:23:05,624 INFO L78 Accepts]: Start accepts. Automaton has 37780 states and 201508 transitions. Word has length 27 [2020-09-15 13:23:05,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:23:05,624 INFO L479 AbstractCegarLoop]: Abstraction has 37780 states and 201508 transitions. [2020-09-15 13:23:05,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 13:23:05,624 INFO L276 IsEmpty]: Start isEmpty. Operand 37780 states and 201508 transitions. [2020-09-15 13:23:05,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 13:23:05,628 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:23:05,628 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] [2020-09-15 13:23:05,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2020-09-15 13:23:05,829 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]=== [2020-09-15 13:23:05,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:23:05,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1807002315, now seen corresponding path program 2 times [2020-09-15 13:23:05,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:23:05,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141849349] [2020-09-15 13:23:05,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:23:05,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:23:05,953 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 13:23:05,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141849349] [2020-09-15 13:23:05,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475705831] [2020-09-15 13:23:05,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-15 13:23:06,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 13:23:06,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 13:23:06,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 13:23:06,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:23:06,274 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 13:23:06,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:23:06,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 13:23:06,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120407816] [2020-09-15 13:23:06,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 13:23:06,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:23:06,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 13:23:06,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-15 13:23:06,276 INFO L87 Difference]: Start difference. First operand 37780 states and 201508 transitions. Second operand 20 states. [2020-09-15 13:23:11,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:23:11,005 INFO L93 Difference]: Finished difference Result 185731 states and 813247 transitions. [2020-09-15 13:23:11,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 13:23:11,006 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 13:23:11,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:23:11,541 INFO L225 Difference]: With dead ends: 185731 [2020-09-15 13:23:11,541 INFO L226 Difference]: Without dead ends: 185707 [2020-09-15 13:23:11,542 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 [2020-09-15 13:23:13,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185707 states. [2020-09-15 13:23:15,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185707 to 37506. [2020-09-15 13:23:15,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37506 states. [2020-09-15 13:23:16,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37506 states to 37506 states and 200034 transitions. [2020-09-15 13:23:16,031 INFO L78 Accepts]: Start accepts. Automaton has 37506 states and 200034 transitions. Word has length 27 [2020-09-15 13:23:16,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:23:16,031 INFO L479 AbstractCegarLoop]: Abstraction has 37506 states and 200034 transitions. [2020-09-15 13:23:16,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 13:23:16,031 INFO L276 IsEmpty]: Start isEmpty. Operand 37506 states and 200034 transitions. [2020-09-15 13:23:16,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 13:23:16,035 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:23:16,035 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] [2020-09-15 13:23:16,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2020-09-15 13:23:16,236 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]=== [2020-09-15 13:23:16,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:23:16,237 INFO L82 PathProgramCache]: Analyzing trace with hash 2078895349, now seen corresponding path program 3 times [2020-09-15 13:23:16,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:23:16,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710645988] [2020-09-15 13:23:16,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:23:16,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:23:16,367 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 13:23:16,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710645988] [2020-09-15 13:23:16,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203757527] [2020-09-15 13:23:16,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-15 13:23:16,489 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-09-15 13:23:16,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 13:23:16,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 13:23:16,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:23:16,702 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 13:23:16,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:23:16,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 13:23:16,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984806284] [2020-09-15 13:23:16,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 13:23:16,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:23:16,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 13:23:16,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-15 13:23:16,704 INFO L87 Difference]: Start difference. First operand 37506 states and 200034 transitions. Second operand 20 states. [2020-09-15 13:23:21,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:23:21,207 INFO L93 Difference]: Finished difference Result 185071 states and 810108 transitions. [2020-09-15 13:23:21,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 13:23:21,207 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 13:23:21,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:23:21,739 INFO L225 Difference]: With dead ends: 185071 [2020-09-15 13:23:21,739 INFO L226 Difference]: Without dead ends: 185053 [2020-09-15 13:23:21,740 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 [2020-09-15 13:23:24,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185053 states. [2020-09-15 13:23:25,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185053 to 37607. [2020-09-15 13:23:25,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37607 states. [2020-09-15 13:23:26,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37607 states to 37607 states and 200519 transitions. [2020-09-15 13:23:26,994 INFO L78 Accepts]: Start accepts. Automaton has 37607 states and 200519 transitions. Word has length 27 [2020-09-15 13:23:26,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:23:26,995 INFO L479 AbstractCegarLoop]: Abstraction has 37607 states and 200519 transitions. [2020-09-15 13:23:26,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 13:23:26,995 INFO L276 IsEmpty]: Start isEmpty. Operand 37607 states and 200519 transitions. [2020-09-15 13:23:26,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 13:23:26,998 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:23:26,998 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] [2020-09-15 13:23:27,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:23:27,199 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]=== [2020-09-15 13:23:27,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:23:27,200 INFO L82 PathProgramCache]: Analyzing trace with hash -651887627, now seen corresponding path program 4 times [2020-09-15 13:23:27,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:23:27,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725791478] [2020-09-15 13:23:27,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:23:27,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:23:27,326 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 13:23:27,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725791478] [2020-09-15 13:23:27,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13186666] [2020-09-15 13:23:27,327 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-15 13:23:27,451 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 13:23:27,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 13:23:27,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 13:23:27,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:23:27,654 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 13:23:27,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:23:27,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 13:23:27,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844387863] [2020-09-15 13:23:27,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 13:23:27,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:23:27,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 13:23:27,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-15 13:23:27,655 INFO L87 Difference]: Start difference. First operand 37607 states and 200519 transitions. Second operand 20 states. [2020-09-15 13:23:31,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:23:31,944 INFO L93 Difference]: Finished difference Result 184772 states and 808751 transitions. [2020-09-15 13:23:31,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 13:23:31,945 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 13:23:31,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:23:36,484 INFO L225 Difference]: With dead ends: 184772 [2020-09-15 13:23:36,485 INFO L226 Difference]: Without dead ends: 184748 [2020-09-15 13:23:36,485 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 [2020-09-15 13:23:38,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184748 states. [2020-09-15 13:23:40,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184748 to 37341. [2020-09-15 13:23:40,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37341 states. [2020-09-15 13:23:40,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37341 states to 37341 states and 199065 transitions. [2020-09-15 13:23:40,360 INFO L78 Accepts]: Start accepts. Automaton has 37341 states and 199065 transitions. Word has length 27 [2020-09-15 13:23:40,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:23:40,360 INFO L479 AbstractCegarLoop]: Abstraction has 37341 states and 199065 transitions. [2020-09-15 13:23:40,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 13:23:40,360 INFO L276 IsEmpty]: Start isEmpty. Operand 37341 states and 199065 transitions. [2020-09-15 13:23:40,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 13:23:40,364 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:23:40,364 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] [2020-09-15 13:23:40,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:23:40,565 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]=== [2020-09-15 13:23:40,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:23:40,566 INFO L82 PathProgramCache]: Analyzing trace with hash -11846923, now seen corresponding path program 5 times [2020-09-15 13:23:40,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:23:40,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454885871] [2020-09-15 13:23:40,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:23:40,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:23:40,697 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 13:23:40,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454885871] [2020-09-15 13:23:40,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865069151] [2020-09-15 13:23:40,698 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-15 13:23:40,814 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-09-15 13:23:40,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 13:23:40,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 13:23:40,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:23:41,011 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 13:23:41,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:23:41,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 13:23:41,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001582129] [2020-09-15 13:23:41,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 13:23:41,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:23:41,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 13:23:41,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-15 13:23:41,013 INFO L87 Difference]: Start difference. First operand 37341 states and 199065 transitions. Second operand 20 states. [2020-09-15 13:23:45,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:23:45,880 INFO L93 Difference]: Finished difference Result 184120 states and 805632 transitions. [2020-09-15 13:23:45,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 13:23:45,881 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 13:23:45,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:23:46,421 INFO L225 Difference]: With dead ends: 184120 [2020-09-15 13:23:46,421 INFO L226 Difference]: Without dead ends: 184102 [2020-09-15 13:23:46,422 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 [2020-09-15 13:23:48,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184102 states. [2020-09-15 13:23:54,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184102 to 37438. [2020-09-15 13:23:54,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37438 states. [2020-09-15 13:23:54,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37438 states to 37438 states and 199538 transitions. [2020-09-15 13:23:54,298 INFO L78 Accepts]: Start accepts. Automaton has 37438 states and 199538 transitions. Word has length 27 [2020-09-15 13:23:54,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:23:54,298 INFO L479 AbstractCegarLoop]: Abstraction has 37438 states and 199538 transitions. [2020-09-15 13:23:54,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 13:23:54,298 INFO L276 IsEmpty]: Start isEmpty. Operand 37438 states and 199538 transitions. [2020-09-15 13:23:54,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 13:23:54,301 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:23:54,302 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] [2020-09-15 13:23:54,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:23:54,503 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]=== [2020-09-15 13:23:54,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:23:54,503 INFO L82 PathProgramCache]: Analyzing trace with hash -22798603, now seen corresponding path program 6 times [2020-09-15 13:23:54,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:23:54,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689560277] [2020-09-15 13:23:54,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:23:54,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:23:54,639 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 13:23:54,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689560277] [2020-09-15 13:23:54,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335673140] [2020-09-15 13:23:54,640 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-15 13:23:54,767 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-09-15 13:23:54,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 13:23:54,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 13:23:54,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:23:54,987 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 13:23:54,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:23:54,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 13:23:54,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572641925] [2020-09-15 13:23:54,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 13:23:54,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:23:54,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 13:23:54,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-15 13:23:54,989 INFO L87 Difference]: Start difference. First operand 37438 states and 199538 transitions. Second operand 20 states. [2020-09-15 13:23:59,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:23:59,800 INFO L93 Difference]: Finished difference Result 183711 states and 803890 transitions. [2020-09-15 13:23:59,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 13:23:59,801 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 13:23:59,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:24:00,359 INFO L225 Difference]: With dead ends: 183711 [2020-09-15 13:24:00,360 INFO L226 Difference]: Without dead ends: 183683 [2020-09-15 13:24:00,360 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 [2020-09-15 13:24:01,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183683 states. [2020-09-15 13:24:07,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183683 to 37176. [2020-09-15 13:24:07,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37176 states. [2020-09-15 13:24:07,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37176 states to 37176 states and 198103 transitions. [2020-09-15 13:24:07,616 INFO L78 Accepts]: Start accepts. Automaton has 37176 states and 198103 transitions. Word has length 27 [2020-09-15 13:24:07,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:24:07,616 INFO L479 AbstractCegarLoop]: Abstraction has 37176 states and 198103 transitions. [2020-09-15 13:24:07,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 13:24:07,616 INFO L276 IsEmpty]: Start isEmpty. Operand 37176 states and 198103 transitions. [2020-09-15 13:24:07,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 13:24:07,619 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:24:07,619 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:24:07,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2020-09-15 13:24:07,820 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]=== [2020-09-15 13:24:07,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:24:07,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1035670065, now seen corresponding path program 1 times [2020-09-15 13:24:07,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:24:07,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701195276] [2020-09-15 13:24:07,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:24:07,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:24:07,896 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-15 13:24:07,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701195276] [2020-09-15 13:24:07,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365772478] [2020-09-15 13:24:07,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-15 13:24:08,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:24:08,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 13:24:08,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:24:08,106 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-15 13:24:08,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:24:08,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 13:24:08,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509911668] [2020-09-15 13:24:08,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 13:24:08,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:24:08,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 13:24:08,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-15 13:24:08,108 INFO L87 Difference]: Start difference. First operand 37176 states and 198103 transitions. Second operand 12 states. [2020-09-15 13:24:09,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:24:09,500 INFO L93 Difference]: Finished difference Result 82213 states and 399726 transitions. [2020-09-15 13:24:09,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 13:24:09,501 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-09-15 13:24:09,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:24:09,777 INFO L225 Difference]: With dead ends: 82213 [2020-09-15 13:24:09,777 INFO L226 Difference]: Without dead ends: 82165 [2020-09-15 13:24:09,778 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 [2020-09-15 13:24:10,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82165 states. [2020-09-15 13:24:11,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82165 to 38439. [2020-09-15 13:24:11,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38439 states. [2020-09-15 13:24:12,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38439 states to 38439 states and 204452 transitions. [2020-09-15 13:24:12,745 INFO L78 Accepts]: Start accepts. Automaton has 38439 states and 204452 transitions. Word has length 27 [2020-09-15 13:24:12,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:24:12,745 INFO L479 AbstractCegarLoop]: Abstraction has 38439 states and 204452 transitions. [2020-09-15 13:24:12,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 13:24:12,745 INFO L276 IsEmpty]: Start isEmpty. Operand 38439 states and 204452 transitions. [2020-09-15 13:24:12,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 13:24:12,749 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:24:12,749 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] [2020-09-15 13:24:12,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2020-09-15 13:24:12,950 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]=== [2020-09-15 13:24:12,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:24:12,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1753210507, now seen corresponding path program 7 times [2020-09-15 13:24:12,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:24:12,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963422041] [2020-09-15 13:24:12,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:24:12,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:24:13,084 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 13:24:13,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963422041] [2020-09-15 13:24:13,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947389531] [2020-09-15 13:24:13,085 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-15 13:24:13,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:24:13,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 13:24:13,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:24:13,411 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 13:24:13,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:24:13,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 13:24:13,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845527389] [2020-09-15 13:24:13,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 13:24:13,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:24:13,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 13:24:13,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-15 13:24:13,413 INFO L87 Difference]: Start difference. First operand 38439 states and 204452 transitions. Second operand 20 states. [2020-09-15 13:24:17,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:24:17,455 INFO L93 Difference]: Finished difference Result 183266 states and 800955 transitions. [2020-09-15 13:24:17,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 13:24:17,456 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 13:24:17,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:24:21,831 INFO L225 Difference]: With dead ends: 183266 [2020-09-15 13:24:21,831 INFO L226 Difference]: Without dead ends: 183248 [2020-09-15 13:24:21,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1878 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1283, Invalid=4723, Unknown=0, NotChecked=0, Total=6006 [2020-09-15 13:24:23,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183248 states. [2020-09-15 13:24:25,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183248 to 38274. [2020-09-15 13:24:25,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38274 states. [2020-09-15 13:24:25,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38274 states to 38274 states and 203647 transitions. [2020-09-15 13:24:25,603 INFO L78 Accepts]: Start accepts. Automaton has 38274 states and 203647 transitions. Word has length 27 [2020-09-15 13:24:25,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:24:25,603 INFO L479 AbstractCegarLoop]: Abstraction has 38274 states and 203647 transitions. [2020-09-15 13:24:25,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 13:24:25,604 INFO L276 IsEmpty]: Start isEmpty. Operand 38274 states and 203647 transitions. [2020-09-15 13:24:25,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 13:24:25,607 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:24:25,608 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] [2020-09-15 13:24:25,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2020-09-15 13:24:25,809 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]=== [2020-09-15 13:24:25,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:24:25,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1215038581, now seen corresponding path program 8 times [2020-09-15 13:24:25,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:24:25,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403560873] [2020-09-15 13:24:25,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:24:25,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:24:25,941 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 13:24:25,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403560873] [2020-09-15 13:24:25,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281926917] [2020-09-15 13:24:25,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-15 13:24:26,066 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 13:24:26,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 13:24:26,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 13:24:26,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:24:26,282 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 13:24:26,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:24:26,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 13:24:26,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377435624] [2020-09-15 13:24:26,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 13:24:26,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:24:26,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 13:24:26,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-15 13:24:26,284 INFO L87 Difference]: Start difference. First operand 38274 states and 203647 transitions. Second operand 20 states. [2020-09-15 13:24:31,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:24:31,751 INFO L93 Difference]: Finished difference Result 182849 states and 799193 transitions. [2020-09-15 13:24:31,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 13:24:31,752 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 13:24:31,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:24:32,281 INFO L225 Difference]: With dead ends: 182849 [2020-09-15 13:24:32,281 INFO L226 Difference]: Without dead ends: 182825 [2020-09-15 13:24:32,281 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 [2020-09-15 13:24:33,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182825 states. [2020-09-15 13:24:36,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182825 to 37880. [2020-09-15 13:24:36,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37880 states. [2020-09-15 13:24:36,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37880 states to 37880 states and 201614 transitions. [2020-09-15 13:24:36,878 INFO L78 Accepts]: Start accepts. Automaton has 37880 states and 201614 transitions. Word has length 27 [2020-09-15 13:24:36,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:24:36,878 INFO L479 AbstractCegarLoop]: Abstraction has 37880 states and 201614 transitions. [2020-09-15 13:24:36,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 13:24:36,878 INFO L276 IsEmpty]: Start isEmpty. Operand 37880 states and 201614 transitions. [2020-09-15 13:24:36,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 13:24:36,883 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:24:36,883 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] [2020-09-15 13:24:37,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2020-09-15 13:24:37,084 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]=== [2020-09-15 13:24:37,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:24:37,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1641326347, now seen corresponding path program 9 times [2020-09-15 13:24:37,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:24:37,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312279699] [2020-09-15 13:24:37,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:24:37,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:24:37,206 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 13:24:37,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312279699] [2020-09-15 13:24:37,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966977161] [2020-09-15 13:24:37,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-15 13:24:37,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-09-15 13:24:37,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 13:24:37,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 13:24:37,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:24:37,613 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 13:24:37,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:24:37,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 13:24:37,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856141510] [2020-09-15 13:24:37,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 13:24:37,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:24:37,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 13:24:37,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-15 13:24:37,615 INFO L87 Difference]: Start difference. First operand 37880 states and 201614 transitions. Second operand 20 states. [2020-09-15 13:24:42,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:24:42,834 INFO L93 Difference]: Finished difference Result 183813 states and 803277 transitions. [2020-09-15 13:24:42,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 13:24:42,835 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 13:24:42,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:24:43,388 INFO L225 Difference]: With dead ends: 183813 [2020-09-15 13:24:43,388 INFO L226 Difference]: Without dead ends: 183795 [2020-09-15 13:24:43,389 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 [2020-09-15 13:24:45,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183795 states. [2020-09-15 13:24:48,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183795 to 37981. [2020-09-15 13:24:48,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37981 states. [2020-09-15 13:24:48,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37981 states to 37981 states and 202099 transitions. [2020-09-15 13:24:48,504 INFO L78 Accepts]: Start accepts. Automaton has 37981 states and 202099 transitions. Word has length 27 [2020-09-15 13:24:48,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:24:48,505 INFO L479 AbstractCegarLoop]: Abstraction has 37981 states and 202099 transitions. [2020-09-15 13:24:48,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 13:24:48,505 INFO L276 IsEmpty]: Start isEmpty. Operand 37981 states and 202099 transitions. [2020-09-15 13:24:48,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 13:24:48,509 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:24:48,509 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] [2020-09-15 13:24:48,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2020-09-15 13:24:48,718 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]=== [2020-09-15 13:24:48,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:24:48,719 INFO L82 PathProgramCache]: Analyzing trace with hash -144395083, now seen corresponding path program 10 times [2020-09-15 13:24:48,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:24:48,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704937355] [2020-09-15 13:24:48,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:24:48,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:24:48,850 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 13:24:48,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704937355] [2020-09-15 13:24:48,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150343862] [2020-09-15 13:24:48,850 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-15 13:24:48,973 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 13:24:48,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 13:24:48,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 13:24:48,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:24:49,184 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 13:24:49,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:24:49,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 13:24:49,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371706677] [2020-09-15 13:24:49,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 13:24:49,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:24:49,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 13:24:49,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-15 13:24:49,186 INFO L87 Difference]: Start difference. First operand 37981 states and 202099 transitions. Second operand 20 states. [2020-09-15 13:24:54,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:24:54,488 INFO L93 Difference]: Finished difference Result 184566 states and 806586 transitions. [2020-09-15 13:24:54,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 13:24:54,489 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 13:24:54,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:24:55,028 INFO L225 Difference]: With dead ends: 184566 [2020-09-15 13:24:55,028 INFO L226 Difference]: Without dead ends: 184542 [2020-09-15 13:24:55,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1873 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1283, Invalid=4723, Unknown=0, NotChecked=0, Total=6006 [2020-09-15 13:24:57,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184542 states. [2020-09-15 13:24:59,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184542 to 37715. [2020-09-15 13:24:59,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37715 states. [2020-09-15 13:25:00,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37715 states to 37715 states and 200645 transitions. [2020-09-15 13:25:00,132 INFO L78 Accepts]: Start accepts. Automaton has 37715 states and 200645 transitions. Word has length 27 [2020-09-15 13:25:00,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:25:00,133 INFO L479 AbstractCegarLoop]: Abstraction has 37715 states and 200645 transitions. [2020-09-15 13:25:00,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 13:25:00,133 INFO L276 IsEmpty]: Start isEmpty. Operand 37715 states and 200645 transitions. [2020-09-15 13:25:00,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 13:25:00,138 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:25:00,138 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] [2020-09-15 13:25:00,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:25:00,351 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]=== [2020-09-15 13:25:00,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:25:00,352 INFO L82 PathProgramCache]: Analyzing trace with hash 484693941, now seen corresponding path program 11 times [2020-09-15 13:25:00,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:25:00,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769376401] [2020-09-15 13:25:00,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:25:00,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:25:00,479 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 13:25:00,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769376401] [2020-09-15 13:25:00,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896483343] [2020-09-15 13:25:00,480 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-15 13:25:00,602 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-09-15 13:25:00,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 13:25:00,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 13:25:00,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:25:00,816 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 13:25:00,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:25:00,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 13:25:00,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854843426] [2020-09-15 13:25:00,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 13:25:00,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:25:00,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 13:25:00,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-15 13:25:00,818 INFO L87 Difference]: Start difference. First operand 37715 states and 200645 transitions. Second operand 20 states. [2020-09-15 13:25:05,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:25:05,853 INFO L93 Difference]: Finished difference Result 183914 states and 803467 transitions. [2020-09-15 13:25:05,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 13:25:05,854 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 13:25:05,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:25:06,501 INFO L225 Difference]: With dead ends: 183914 [2020-09-15 13:25:06,501 INFO L226 Difference]: Without dead ends: 183896 [2020-09-15 13:25:06,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1861 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1283, Invalid=4723, Unknown=0, NotChecked=0, Total=6006 [2020-09-15 13:25:08,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183896 states. [2020-09-15 13:25:11,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183896 to 37812. [2020-09-15 13:25:11,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37812 states. [2020-09-15 13:25:11,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37812 states to 37812 states and 201118 transitions. [2020-09-15 13:25:11,347 INFO L78 Accepts]: Start accepts. Automaton has 37812 states and 201118 transitions. Word has length 27 [2020-09-15 13:25:11,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:25:11,347 INFO L479 AbstractCegarLoop]: Abstraction has 37812 states and 201118 transitions. [2020-09-15 13:25:11,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 13:25:11,347 INFO L276 IsEmpty]: Start isEmpty. Operand 37812 states and 201118 transitions. [2020-09-15 13:25:11,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 13:25:11,351 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:25:11,351 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] [2020-09-15 13:25:11,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2020-09-15 13:25:11,552 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]=== [2020-09-15 13:25:11,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:25:11,553 INFO L82 PathProgramCache]: Analyzing trace with hash 468950901, now seen corresponding path program 12 times [2020-09-15 13:25:11,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:25:11,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597754078] [2020-09-15 13:25:11,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:25:11,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:25:11,691 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 13:25:11,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597754078] [2020-09-15 13:25:11,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450097836] [2020-09-15 13:25:11,692 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-15 13:25:11,803 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-09-15 13:25:11,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 13:25:11,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 13:25:11,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:25:12,006 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 13:25:12,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:25:12,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 13:25:12,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546492599] [2020-09-15 13:25:12,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 13:25:12,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:25:12,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 13:25:12,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-15 13:25:12,008 INFO L87 Difference]: Start difference. First operand 37812 states and 201118 transitions. Second operand 20 states. [2020-09-15 13:25:17,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:25:17,924 INFO L93 Difference]: Finished difference Result 182421 states and 796955 transitions. [2020-09-15 13:25:17,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 13:25:17,925 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 13:25:17,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:25:18,438 INFO L225 Difference]: With dead ends: 182421 [2020-09-15 13:25:18,438 INFO L226 Difference]: Without dead ends: 182393 [2020-09-15 13:25:18,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1871 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1283, Invalid=4723, Unknown=0, NotChecked=0, Total=6006 [2020-09-15 13:25:20,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182393 states. [2020-09-15 13:25:25,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182393 to 37550. [2020-09-15 13:25:25,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37550 states. [2020-09-15 13:25:25,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37550 states to 37550 states and 199683 transitions. [2020-09-15 13:25:25,463 INFO L78 Accepts]: Start accepts. Automaton has 37550 states and 199683 transitions. Word has length 27 [2020-09-15 13:25:25,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:25:25,463 INFO L479 AbstractCegarLoop]: Abstraction has 37550 states and 199683 transitions. [2020-09-15 13:25:25,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 13:25:25,463 INFO L276 IsEmpty]: Start isEmpty. Operand 37550 states and 199683 transitions. [2020-09-15 13:25:25,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 13:25:25,466 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:25:25,467 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:25:25,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2020-09-15 13:25:25,667 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]=== [2020-09-15 13:25:25,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:25:25,668 INFO L82 PathProgramCache]: Analyzing trace with hash -528149714, now seen corresponding path program 1 times [2020-09-15 13:25:25,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:25:25,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057794795] [2020-09-15 13:25:25,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:25:25,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:25:25,744 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-15 13:25:25,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057794795] [2020-09-15 13:25:25,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483904776] [2020-09-15 13:25:25,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-15 13:25:25,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:25:25,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 13:25:25,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:25:25,947 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-15 13:25:25,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:25:25,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 13:25:25,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874976539] [2020-09-15 13:25:25,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 13:25:25,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:25:25,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 13:25:25,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-15 13:25:25,949 INFO L87 Difference]: Start difference. First operand 37550 states and 199683 transitions. Second operand 12 states. [2020-09-15 13:25:26,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:25:26,914 INFO L93 Difference]: Finished difference Result 86095 states and 418282 transitions. [2020-09-15 13:25:26,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 13:25:26,915 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-09-15 13:25:26,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:25:27,168 INFO L225 Difference]: With dead ends: 86095 [2020-09-15 13:25:27,168 INFO L226 Difference]: Without dead ends: 86043 [2020-09-15 13:25:27,169 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 [2020-09-15 13:25:28,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86043 states. [2020-09-15 13:25:29,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86043 to 39046. [2020-09-15 13:25:29,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39046 states. [2020-09-15 13:25:29,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39046 states to 39046 states and 207545 transitions. [2020-09-15 13:25:29,693 INFO L78 Accepts]: Start accepts. Automaton has 39046 states and 207545 transitions. Word has length 27 [2020-09-15 13:25:29,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:25:29,693 INFO L479 AbstractCegarLoop]: Abstraction has 39046 states and 207545 transitions. [2020-09-15 13:25:29,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 13:25:29,693 INFO L276 IsEmpty]: Start isEmpty. Operand 39046 states and 207545 transitions. [2020-09-15 13:25:29,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 13:25:29,697 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:25:29,697 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] [2020-09-15 13:25:29,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:25:29,898 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]=== [2020-09-15 13:25:29,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:25:29,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1008837557, now seen corresponding path program 13 times [2020-09-15 13:25:29,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:25:29,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090703328] [2020-09-15 13:25:29,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:25:29,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:25:30,027 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 13:25:30,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090703328] [2020-09-15 13:25:30,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281517267] [2020-09-15 13:25:30,028 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-15 13:25:30,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:25:30,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 13:25:30,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:25:30,345 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 13:25:30,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:25:30,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 13:25:30,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436095972] [2020-09-15 13:25:30,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 13:25:30,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:25:30,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 13:25:30,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-15 13:25:30,347 INFO L87 Difference]: Start difference. First operand 39046 states and 207545 transitions. Second operand 20 states. [2020-09-15 13:25:34,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:25:34,671 INFO L93 Difference]: Finished difference Result 182203 states and 795088 transitions. [2020-09-15 13:25:34,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 13:25:34,672 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 13:25:34,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:25:35,928 INFO L225 Difference]: With dead ends: 182203 [2020-09-15 13:25:35,928 INFO L226 Difference]: Without dead ends: 182185 [2020-09-15 13:25:35,929 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 [2020-09-15 13:25:37,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182185 states. [2020-09-15 13:25:42,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182185 to 38881. [2020-09-15 13:25:42,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38881 states. [2020-09-15 13:25:42,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38881 states to 38881 states and 206740 transitions. [2020-09-15 13:25:42,963 INFO L78 Accepts]: Start accepts. Automaton has 38881 states and 206740 transitions. Word has length 27 [2020-09-15 13:25:42,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:25:42,963 INFO L479 AbstractCegarLoop]: Abstraction has 38881 states and 206740 transitions. [2020-09-15 13:25:42,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 13:25:42,964 INFO L276 IsEmpty]: Start isEmpty. Operand 38881 states and 206740 transitions. [2020-09-15 13:25:42,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 13:25:42,969 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:25:42,969 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] [2020-09-15 13:25:43,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:25:43,182 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]=== [2020-09-15 13:25:43,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:25:43,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1789198475, now seen corresponding path program 14 times [2020-09-15 13:25:43,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:25:43,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528768063] [2020-09-15 13:25:43,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:25:43,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:25:43,332 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 13:25:43,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528768063] [2020-09-15 13:25:43,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413847091] [2020-09-15 13:25:43,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-15 13:25:43,453 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 13:25:43,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 13:25:43,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 13:25:43,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:25:43,659 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 13:25:43,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:25:43,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 13:25:43,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154924816] [2020-09-15 13:25:43,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 13:25:43,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:25:43,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 13:25:43,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-15 13:25:43,661 INFO L87 Difference]: Start difference. First operand 38881 states and 206740 transitions. Second operand 20 states. [2020-09-15 13:25:48,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:25:48,236 INFO L93 Difference]: Finished difference Result 182814 states and 797848 transitions. [2020-09-15 13:25:48,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 13:25:48,237 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 13:25:48,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:25:49,597 INFO L225 Difference]: With dead ends: 182814 [2020-09-15 13:25:49,597 INFO L226 Difference]: Without dead ends: 182790 [2020-09-15 13:25:49,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1874 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1283, Invalid=4723, Unknown=0, NotChecked=0, Total=6006 [2020-09-15 13:25:51,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182790 states. [2020-09-15 13:25:56,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182790 to 38491. [2020-09-15 13:25:56,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38491 states. [2020-09-15 13:25:56,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38491 states to 38491 states and 204715 transitions. [2020-09-15 13:25:56,576 INFO L78 Accepts]: Start accepts. Automaton has 38491 states and 204715 transitions. Word has length 27 [2020-09-15 13:25:56,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:25:56,577 INFO L479 AbstractCegarLoop]: Abstraction has 38491 states and 204715 transitions. [2020-09-15 13:25:56,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 13:25:56,577 INFO L276 IsEmpty]: Start isEmpty. Operand 38491 states and 204715 transitions. [2020-09-15 13:25:56,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 13:25:56,581 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:25:56,581 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] [2020-09-15 13:25:56,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,69 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:25:56,782 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]=== [2020-09-15 13:25:56,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:25:56,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1120567157, now seen corresponding path program 15 times [2020-09-15 13:25:56,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:25:56,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990715215] [2020-09-15 13:25:56,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:25:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:25:56,912 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 13:25:56,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990715215] [2020-09-15 13:25:56,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157918907] [2020-09-15 13:25:56,913 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-15 13:25:57,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-15 13:25:57,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 13:25:57,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 13:25:57,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:25:57,232 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 13:25:57,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:25:57,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 13:25:57,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223850701] [2020-09-15 13:25:57,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 13:25:57,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:25:57,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 13:25:57,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-15 13:25:57,234 INFO L87 Difference]: Start difference. First operand 38491 states and 204715 transitions. Second operand 20 states. [2020-09-15 13:26:01,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:26:01,637 INFO L93 Difference]: Finished difference Result 181233 states and 790722 transitions. [2020-09-15 13:26:01,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 13:26:01,638 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 13:26:01,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:26:02,136 INFO L225 Difference]: With dead ends: 181233 [2020-09-15 13:26:02,137 INFO L226 Difference]: Without dead ends: 181215 [2020-09-15 13:26:02,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1871 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1283, Invalid=4723, Unknown=0, NotChecked=0, Total=6006 [2020-09-15 13:26:04,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181215 states. [2020-09-15 13:26:07,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181215 to 38192. [2020-09-15 13:26:07,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38192 states. [2020-09-15 13:26:07,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38192 states to 38192 states and 203358 transitions. [2020-09-15 13:26:07,152 INFO L78 Accepts]: Start accepts. Automaton has 38192 states and 203358 transitions. Word has length 27 [2020-09-15 13:26:07,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:26:07,152 INFO L479 AbstractCegarLoop]: Abstraction has 38192 states and 203358 transitions. [2020-09-15 13:26:07,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 13:26:07,152 INFO L276 IsEmpty]: Start isEmpty. Operand 38192 states and 203358 transitions. [2020-09-15 13:26:07,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 13:26:07,156 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:26:07,156 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] [2020-09-15 13:26:07,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2020-09-15 13:26:07,357 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]=== [2020-09-15 13:26:07,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:26:07,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1610215819, now seen corresponding path program 16 times [2020-09-15 13:26:07,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:26:07,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931301476] [2020-09-15 13:26:07,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:26:07,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:26:07,489 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 13:26:07,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931301476] [2020-09-15 13:26:07,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772254364] [2020-09-15 13:26:07,490 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-15 13:26:07,606 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 13:26:07,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 13:26:07,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 13:26:07,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:26:07,809 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 13:26:07,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:26:07,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 13:26:07,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555027490] [2020-09-15 13:26:07,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 13:26:07,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:26:07,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 13:26:07,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-15 13:26:07,811 INFO L87 Difference]: Start difference. First operand 38192 states and 203358 transitions. Second operand 20 states. [2020-09-15 13:26:15,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:26:15,693 INFO L93 Difference]: Finished difference Result 181989 states and 794023 transitions. [2020-09-15 13:26:15,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 13:26:15,694 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 13:26:15,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:26:16,289 INFO L225 Difference]: With dead ends: 181989 [2020-09-15 13:26:16,289 INFO L226 Difference]: Without dead ends: 181965 [2020-09-15 13:26:16,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1866 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1283, Invalid=4723, Unknown=0, NotChecked=0, Total=6006 [2020-09-15 13:26:17,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181965 states. [2020-09-15 13:26:19,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181965 to 37802. [2020-09-15 13:26:19,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37802 states. [2020-09-15 13:26:20,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37802 states to 37802 states and 201333 transitions. [2020-09-15 13:26:20,103 INFO L78 Accepts]: Start accepts. Automaton has 37802 states and 201333 transitions. Word has length 27 [2020-09-15 13:26:20,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:26:20,103 INFO L479 AbstractCegarLoop]: Abstraction has 37802 states and 201333 transitions. [2020-09-15 13:26:20,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 13:26:20,104 INFO L276 IsEmpty]: Start isEmpty. Operand 37802 states and 201333 transitions. [2020-09-15 13:26:20,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 13:26:20,107 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:26:20,107 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] [2020-09-15 13:26:20,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2020-09-15 13:26:20,308 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]=== [2020-09-15 13:26:20,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:26:20,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1846620555, now seen corresponding path program 17 times [2020-09-15 13:26:20,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:26:20,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198460181] [2020-09-15 13:26:20,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:26:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:26:20,439 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 13:26:20,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198460181] [2020-09-15 13:26:20,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301755319] [2020-09-15 13:26:20,439 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-15 13:26:20,560 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-09-15 13:26:20,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 13:26:20,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 13:26:20,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:26:20,767 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 13:26:20,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:26:20,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 13:26:20,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229934291] [2020-09-15 13:26:20,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 13:26:20,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:26:20,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 13:26:20,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-15 13:26:20,769 INFO L87 Difference]: Start difference. First operand 37802 states and 201333 transitions. Second operand 20 states. [2020-09-15 13:26:25,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:26:25,406 INFO L93 Difference]: Finished difference Result 183299 states and 799959 transitions. [2020-09-15 13:26:25,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 13:26:25,407 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 13:26:25,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:26:25,910 INFO L225 Difference]: With dead ends: 183299 [2020-09-15 13:26:25,910 INFO L226 Difference]: Without dead ends: 183281 [2020-09-15 13:26:25,911 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 [2020-09-15 13:26:28,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183281 states. [2020-09-15 13:26:33,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183281 to 37899. [2020-09-15 13:26:33,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37899 states. [2020-09-15 13:26:33,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37899 states to 37899 states and 201806 transitions. [2020-09-15 13:26:33,564 INFO L78 Accepts]: Start accepts. Automaton has 37899 states and 201806 transitions. Word has length 27 [2020-09-15 13:26:33,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:26:33,565 INFO L479 AbstractCegarLoop]: Abstraction has 37899 states and 201806 transitions. [2020-09-15 13:26:33,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 13:26:33,565 INFO L276 IsEmpty]: Start isEmpty. Operand 37899 states and 201806 transitions. [2020-09-15 13:26:33,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 13:26:33,569 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:26:33,569 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] [2020-09-15 13:26:33,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2020-09-15 13:26:33,770 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]=== [2020-09-15 13:26:33,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:26:33,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1873315275, now seen corresponding path program 18 times [2020-09-15 13:26:33,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:26:33,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74103951] [2020-09-15 13:26:33,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:26:33,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:26:33,903 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 13:26:33,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74103951] [2020-09-15 13:26:33,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945337092] [2020-09-15 13:26:33,904 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-15 13:26:34,019 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-09-15 13:26:34,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 13:26:34,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 13:26:34,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:26:34,228 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 13:26:34,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:26:34,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 13:26:34,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613539019] [2020-09-15 13:26:34,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 13:26:34,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:26:34,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 13:26:34,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-15 13:26:34,229 INFO L87 Difference]: Start difference. First operand 37899 states and 201806 transitions. Second operand 20 states. [2020-09-15 13:26:39,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:26:39,039 INFO L93 Difference]: Finished difference Result 182890 states and 798217 transitions. [2020-09-15 13:26:39,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 13:26:39,040 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 13:26:39,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:26:39,544 INFO L225 Difference]: With dead ends: 182890 [2020-09-15 13:26:39,544 INFO L226 Difference]: Without dead ends: 182862 [2020-09-15 13:26:39,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1861 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1283, Invalid=4723, Unknown=0, NotChecked=0, Total=6006 [2020-09-15 13:26:41,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182862 states. [2020-09-15 13:26:43,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182862 to 37637. [2020-09-15 13:26:43,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37637 states. [2020-09-15 13:26:44,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37637 states to 37637 states and 200371 transitions. [2020-09-15 13:26:44,811 INFO L78 Accepts]: Start accepts. Automaton has 37637 states and 200371 transitions. Word has length 27 [2020-09-15 13:26:44,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:26:44,811 INFO L479 AbstractCegarLoop]: Abstraction has 37637 states and 200371 transitions. [2020-09-15 13:26:44,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 13:26:44,812 INFO L276 IsEmpty]: Start isEmpty. Operand 37637 states and 200371 transitions. [2020-09-15 13:26:44,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 13:26:44,816 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:26:44,816 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:26:45,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2020-09-15 13:26:45,017 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]=== [2020-09-15 13:26:45,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:26:45,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1424539998, now seen corresponding path program 1 times [2020-09-15 13:26:45,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:26:45,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361441460] [2020-09-15 13:26:45,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:26:45,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:26:45,093 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 13:26:45,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361441460] [2020-09-15 13:26:45,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444348735] [2020-09-15 13:26:45,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-15 13:26:45,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:26:45,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 13:26:45,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:26:45,299 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 13:26:45,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:26:45,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 13:26:45,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612982110] [2020-09-15 13:26:45,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 13:26:45,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:26:45,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 13:26:45,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-15 13:26:45,301 INFO L87 Difference]: Start difference. First operand 37637 states and 200371 transitions. Second operand 12 states. [2020-09-15 13:26:46,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:26:46,312 INFO L93 Difference]: Finished difference Result 88848 states and 432494 transitions. [2020-09-15 13:26:46,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 13:26:46,313 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-09-15 13:26:46,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:26:46,605 INFO L225 Difference]: With dead ends: 88848 [2020-09-15 13:26:46,605 INFO L226 Difference]: Without dead ends: 88788 [2020-09-15 13:26:46,606 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 [2020-09-15 13:26:47,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88788 states. [2020-09-15 13:26:51,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88788 to 39292. [2020-09-15 13:26:51,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39292 states. [2020-09-15 13:26:51,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39292 states to 39292 states and 209387 transitions. [2020-09-15 13:26:51,771 INFO L78 Accepts]: Start accepts. Automaton has 39292 states and 209387 transitions. Word has length 27 [2020-09-15 13:26:51,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:26:51,772 INFO L479 AbstractCegarLoop]: Abstraction has 39292 states and 209387 transitions. [2020-09-15 13:26:51,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 13:26:51,772 INFO L276 IsEmpty]: Start isEmpty. Operand 39292 states and 209387 transitions. [2020-09-15 13:26:51,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 13:26:51,776 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:26:51,776 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:26:51,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:26:51,977 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]=== [2020-09-15 13:26:51,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:26:51,978 INFO L82 PathProgramCache]: Analyzing trace with hash -839318940, now seen corresponding path program 1 times [2020-09-15 13:26:51,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:26:51,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618043276] [2020-09-15 13:26:51,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:26:51,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:26:52,052 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 13:26:52,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618043276] [2020-09-15 13:26:52,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012770240] [2020-09-15 13:26:52,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-15 13:26:52,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:26:52,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 13:26:52,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:26:52,259 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 13:26:52,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:26:52,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 13:26:52,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066582543] [2020-09-15 13:26:52,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 13:26:52,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:26:52,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 13:26:52,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-15 13:26:52,261 INFO L87 Difference]: Start difference. First operand 39292 states and 209387 transitions. Second operand 12 states. [2020-09-15 13:26:53,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:26:53,216 INFO L93 Difference]: Finished difference Result 92913 states and 454143 transitions. [2020-09-15 13:26:53,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 13:26:53,217 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-09-15 13:26:53,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:26:54,157 INFO L225 Difference]: With dead ends: 92913 [2020-09-15 13:26:54,157 INFO L226 Difference]: Without dead ends: 92836 [2020-09-15 13:26:54,157 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 [2020-09-15 13:26:55,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92836 states. [2020-09-15 13:26:56,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92836 to 40834. [2020-09-15 13:26:56,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40834 states. [2020-09-15 13:26:56,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40834 states to 40834 states and 218021 transitions. [2020-09-15 13:26:56,243 INFO L78 Accepts]: Start accepts. Automaton has 40834 states and 218021 transitions. Word has length 27 [2020-09-15 13:26:56,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:26:56,244 INFO L479 AbstractCegarLoop]: Abstraction has 40834 states and 218021 transitions. [2020-09-15 13:26:56,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 13:26:56,244 INFO L276 IsEmpty]: Start isEmpty. Operand 40834 states and 218021 transitions. [2020-09-15 13:26:56,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 13:26:56,249 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:26:56,249 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] [2020-09-15 13:26:56,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2020-09-15 13:26:56,979 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]=== [2020-09-15 13:26:56,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:26:56,979 INFO L82 PathProgramCache]: Analyzing trace with hash -947827339, now seen corresponding path program 19 times [2020-09-15 13:26:56,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:26:56,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053242983] [2020-09-15 13:26:56,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:26:56,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:26:57,112 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 13:26:57,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053242983] [2020-09-15 13:26:57,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:26:57,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-15 13:26:57,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822728937] [2020-09-15 13:26:57,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 13:26:57,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:26:57,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 13:26:57,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-15 13:26:57,114 INFO L87 Difference]: Start difference. First operand 40834 states and 218021 transitions. Second operand 11 states. [2020-09-15 13:27:00,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:27:00,819 INFO L93 Difference]: Finished difference Result 180696 states and 786321 transitions. [2020-09-15 13:27:00,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 13:27:00,820 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-15 13:27:00,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:27:01,315 INFO L225 Difference]: With dead ends: 180696 [2020-09-15 13:27:01,316 INFO L226 Difference]: Without dead ends: 180678 [2020-09-15 13:27:01,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1552 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-15 13:27:03,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180678 states. [2020-09-15 13:27:09,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180678 to 40673. [2020-09-15 13:27:09,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40673 states. [2020-09-15 13:27:09,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40673 states to 40673 states and 217228 transitions. [2020-09-15 13:27:09,491 INFO L78 Accepts]: Start accepts. Automaton has 40673 states and 217228 transitions. Word has length 27 [2020-09-15 13:27:09,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:27:09,491 INFO L479 AbstractCegarLoop]: Abstraction has 40673 states and 217228 transitions. [2020-09-15 13:27:09,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 13:27:09,491 INFO L276 IsEmpty]: Start isEmpty. Operand 40673 states and 217228 transitions. [2020-09-15 13:27:09,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 13:27:09,496 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:27:09,496 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] [2020-09-15 13:27:09,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2020-09-15 13:27:09,497 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]=== [2020-09-15 13:27:09,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:27:09,497 INFO L82 PathProgramCache]: Analyzing trace with hash -963570379, now seen corresponding path program 20 times [2020-09-15 13:27:09,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:27:09,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049291756] [2020-09-15 13:27:09,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:27:09,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:27:09,625 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 13:27:09,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049291756] [2020-09-15 13:27:09,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:27:09,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-15 13:27:09,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091067962] [2020-09-15 13:27:09,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 13:27:09,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:27:09,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 13:27:09,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-15 13:27:09,627 INFO L87 Difference]: Start difference. First operand 40673 states and 217228 transitions. Second operand 11 states. [2020-09-15 13:27:14,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:27:14,160 INFO L93 Difference]: Finished difference Result 180287 states and 784579 transitions. [2020-09-15 13:27:14,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 13:27:14,162 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-15 13:27:14,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:27:14,658 INFO L225 Difference]: With dead ends: 180287 [2020-09-15 13:27:14,658 INFO L226 Difference]: Without dead ends: 180263 [2020-09-15 13:27:14,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1559 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-15 13:27:16,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180263 states. [2020-09-15 13:27:18,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180263 to 40321. [2020-09-15 13:27:18,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40321 states. [2020-09-15 13:27:18,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40321 states to 40321 states and 215433 transitions. [2020-09-15 13:27:18,950 INFO L78 Accepts]: Start accepts. Automaton has 40321 states and 215433 transitions. Word has length 27 [2020-09-15 13:27:18,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:27:18,951 INFO L479 AbstractCegarLoop]: Abstraction has 40321 states and 215433 transitions. [2020-09-15 13:27:18,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 13:27:18,951 INFO L276 IsEmpty]: Start isEmpty. Operand 40321 states and 215433 transitions. [2020-09-15 13:27:18,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 13:27:18,958 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:27:18,958 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] [2020-09-15 13:27:18,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2020-09-15 13:27:18,958 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]=== [2020-09-15 13:27:18,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:27:18,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1412510069, now seen corresponding path program 21 times [2020-09-15 13:27:18,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:27:18,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062102356] [2020-09-15 13:27:18,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:27:18,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:27:19,092 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 13:27:19,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062102356] [2020-09-15 13:27:19,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:27:19,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-15 13:27:19,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839437635] [2020-09-15 13:27:19,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 13:27:19,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:27:19,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 13:27:19,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-15 13:27:19,094 INFO L87 Difference]: Start difference. First operand 40321 states and 215433 transitions. Second operand 11 states. [2020-09-15 13:27:23,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:27:23,579 INFO L93 Difference]: Finished difference Result 179815 states and 782456 transitions. [2020-09-15 13:27:23,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 13:27:23,580 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-15 13:27:23,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:27:24,072 INFO L225 Difference]: With dead ends: 179815 [2020-09-15 13:27:24,072 INFO L226 Difference]: Without dead ends: 179797 [2020-09-15 13:27:24,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1545 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-15 13:27:26,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179797 states. [2020-09-15 13:27:31,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179797 to 40030. [2020-09-15 13:27:31,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40030 states. [2020-09-15 13:27:32,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40030 states to 40030 states and 214096 transitions. [2020-09-15 13:27:32,063 INFO L78 Accepts]: Start accepts. Automaton has 40030 states and 214096 transitions. Word has length 27 [2020-09-15 13:27:32,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:27:32,064 INFO L479 AbstractCegarLoop]: Abstraction has 40030 states and 214096 transitions. [2020-09-15 13:27:32,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 13:27:32,064 INFO L276 IsEmpty]: Start isEmpty. Operand 40030 states and 214096 transitions. [2020-09-15 13:27:32,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 13:27:32,069 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:27:32,069 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] [2020-09-15 13:27:32,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2020-09-15 13:27:32,069 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]=== [2020-09-15 13:27:32,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:27:32,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1385815349, now seen corresponding path program 22 times [2020-09-15 13:27:32,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:27:32,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914978015] [2020-09-15 13:27:32,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:27:32,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:27:32,196 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 13:27:32,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914978015] [2020-09-15 13:27:32,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:27:32,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-15 13:27:32,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401813661] [2020-09-15 13:27:32,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 13:27:32,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:27:32,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 13:27:32,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-15 13:27:32,198 INFO L87 Difference]: Start difference. First operand 40030 states and 214096 transitions. Second operand 11 states. [2020-09-15 13:27:36,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:27:36,128 INFO L93 Difference]: Finished difference Result 179585 states and 781438 transitions. [2020-09-15 13:27:36,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 13:27:36,129 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-15 13:27:36,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:27:36,612 INFO L225 Difference]: With dead ends: 179585 [2020-09-15 13:27:36,612 INFO L226 Difference]: Without dead ends: 179561 [2020-09-15 13:27:36,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1535 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-15 13:27:38,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179561 states. [2020-09-15 13:27:41,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179561 to 39678. [2020-09-15 13:27:41,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39678 states. [2020-09-15 13:27:41,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39678 states to 39678 states and 212301 transitions. [2020-09-15 13:27:41,346 INFO L78 Accepts]: Start accepts. Automaton has 39678 states and 212301 transitions. Word has length 27 [2020-09-15 13:27:41,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:27:41,346 INFO L479 AbstractCegarLoop]: Abstraction has 39678 states and 212301 transitions. [2020-09-15 13:27:41,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 13:27:41,347 INFO L276 IsEmpty]: Start isEmpty. Operand 39678 states and 212301 transitions. [2020-09-15 13:27:41,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 13:27:41,351 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:27:41,352 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] [2020-09-15 13:27:41,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2020-09-15 13:27:41,352 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]=== [2020-09-15 13:27:41,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:27:41,352 INFO L82 PathProgramCache]: Analyzing trace with hash -847392523, now seen corresponding path program 23 times [2020-09-15 13:27:41,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:27:41,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158399339] [2020-09-15 13:27:41,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:27:41,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:27:41,486 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 13:27:41,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158399339] [2020-09-15 13:27:41,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:27:41,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-15 13:27:41,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415070223] [2020-09-15 13:27:41,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 13:27:41,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:27:41,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 13:27:41,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-15 13:27:41,488 INFO L87 Difference]: Start difference. First operand 39678 states and 212301 transitions. Second operand 11 states. [2020-09-15 13:27:46,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:27:46,219 INFO L93 Difference]: Finished difference Result 179113 states and 779315 transitions. [2020-09-15 13:27:46,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 13:27:46,220 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-15 13:27:46,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:27:46,707 INFO L225 Difference]: With dead ends: 179113 [2020-09-15 13:27:46,707 INFO L226 Difference]: Without dead ends: 179095 [2020-09-15 13:27:46,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1556 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-15 13:27:48,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179095 states. [2020-09-15 13:27:53,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179095 to 39387. [2020-09-15 13:27:53,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39387 states. [2020-09-15 13:27:53,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39387 states to 39387 states and 210964 transitions. [2020-09-15 13:27:53,778 INFO L78 Accepts]: Start accepts. Automaton has 39387 states and 210964 transitions. Word has length 27 [2020-09-15 13:27:53,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:27:53,779 INFO L479 AbstractCegarLoop]: Abstraction has 39387 states and 210964 transitions. [2020-09-15 13:27:53,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 13:27:53,779 INFO L276 IsEmpty]: Start isEmpty. Operand 39387 states and 210964 transitions. [2020-09-15 13:27:53,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 13:27:53,784 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:27:53,784 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] [2020-09-15 13:27:53,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2020-09-15 13:27:53,784 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]=== [2020-09-15 13:27:53,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:27:53,784 INFO L82 PathProgramCache]: Analyzing trace with hash -858344203, now seen corresponding path program 24 times [2020-09-15 13:27:53,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:27:53,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889834448] [2020-09-15 13:27:53,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:27:53,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:27:53,915 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 13:27:53,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889834448] [2020-09-15 13:27:53,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:27:53,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-15 13:27:53,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449571372] [2020-09-15 13:27:53,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 13:27:53,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:27:53,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 13:27:53,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-15 13:27:53,917 INFO L87 Difference]: Start difference. First operand 39387 states and 210964 transitions. Second operand 11 states. [2020-09-15 13:27:58,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:27:58,298 INFO L93 Difference]: Finished difference Result 178704 states and 777573 transitions. [2020-09-15 13:27:58,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 13:27:58,299 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-15 13:27:58,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:27:58,784 INFO L225 Difference]: With dead ends: 178704 [2020-09-15 13:27:58,784 INFO L226 Difference]: Without dead ends: 178675 [2020-09-15 13:27:58,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1543 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-15 13:28:01,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178675 states. [2020-09-15 13:28:03,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178675 to 38805. [2020-09-15 13:28:03,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38805 states. [2020-09-15 13:28:03,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38805 states to 38805 states and 208284 transitions. [2020-09-15 13:28:03,650 INFO L78 Accepts]: Start accepts. Automaton has 38805 states and 208284 transitions. Word has length 27 [2020-09-15 13:28:03,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:28:03,650 INFO L479 AbstractCegarLoop]: Abstraction has 38805 states and 208284 transitions. [2020-09-15 13:28:03,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 13:28:03,650 INFO L276 IsEmpty]: Start isEmpty. Operand 38805 states and 208284 transitions. [2020-09-15 13:28:03,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 13:28:03,655 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:28:03,655 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:28:03,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2020-09-15 13:28:03,655 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]=== [2020-09-15 13:28:03,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:28:03,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1294328210, now seen corresponding path program 2 times [2020-09-15 13:28:03,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:28:03,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199878203] [2020-09-15 13:28:03,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:28:03,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:28:03,736 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-15 13:28:03,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199878203] [2020-09-15 13:28:03,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:28:03,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 13:28:03,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381886048] [2020-09-15 13:28:03,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 13:28:03,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:28:03,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 13:28:03,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 13:28:03,738 INFO L87 Difference]: Start difference. First operand 38805 states and 208284 transitions. Second operand 7 states. [2020-09-15 13:28:04,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:28:04,683 INFO L93 Difference]: Finished difference Result 90966 states and 445145 transitions. [2020-09-15 13:28:04,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 13:28:04,685 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-15 13:28:04,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:28:04,947 INFO L225 Difference]: With dead ends: 90966 [2020-09-15 13:28:04,947 INFO L226 Difference]: Without dead ends: 90889 [2020-09-15 13:28:04,947 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 [2020-09-15 13:28:05,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90889 states. [2020-09-15 13:28:07,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90889 to 40453. [2020-09-15 13:28:07,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40453 states. [2020-09-15 13:28:07,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40453 states to 40453 states and 217061 transitions. [2020-09-15 13:28:07,726 INFO L78 Accepts]: Start accepts. Automaton has 40453 states and 217061 transitions. Word has length 27 [2020-09-15 13:28:07,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:28:07,726 INFO L479 AbstractCegarLoop]: Abstraction has 40453 states and 217061 transitions. [2020-09-15 13:28:07,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 13:28:07,726 INFO L276 IsEmpty]: Start isEmpty. Operand 40453 states and 217061 transitions. [2020-09-15 13:28:07,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 13:28:07,731 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:28:07,732 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:28:07,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2020-09-15 13:28:07,732 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]=== [2020-09-15 13:28:07,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:28:07,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1294339618, now seen corresponding path program 2 times [2020-09-15 13:28:07,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:28:07,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749044226] [2020-09-15 13:28:07,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:28:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:28:07,807 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-15 13:28:07,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749044226] [2020-09-15 13:28:07,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:28:07,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 13:28:07,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117031853] [2020-09-15 13:28:07,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 13:28:07,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:28:07,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 13:28:07,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 13:28:07,808 INFO L87 Difference]: Start difference. First operand 40453 states and 217061 transitions. Second operand 7 states. [2020-09-15 13:28:08,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:28:08,695 INFO L93 Difference]: Finished difference Result 91560 states and 447373 transitions. [2020-09-15 13:28:08,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 13:28:08,696 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-15 13:28:08,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:28:08,967 INFO L225 Difference]: With dead ends: 91560 [2020-09-15 13:28:08,967 INFO L226 Difference]: Without dead ends: 91483 [2020-09-15 13:28:08,967 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 [2020-09-15 13:28:10,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91483 states. [2020-09-15 13:28:11,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91483 to 41467. [2020-09-15 13:28:11,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41467 states. [2020-09-15 13:28:11,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41467 states to 41467 states and 222391 transitions. [2020-09-15 13:28:11,738 INFO L78 Accepts]: Start accepts. Automaton has 41467 states and 222391 transitions. Word has length 27 [2020-09-15 13:28:11,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:28:11,739 INFO L479 AbstractCegarLoop]: Abstraction has 41467 states and 222391 transitions. [2020-09-15 13:28:11,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 13:28:11,739 INFO L276 IsEmpty]: Start isEmpty. Operand 41467 states and 222391 transitions. [2020-09-15 13:28:11,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 13:28:11,744 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:28:11,744 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:28:11,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2020-09-15 13:28:11,744 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]=== [2020-09-15 13:28:11,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:28:11,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1294356017, now seen corresponding path program 2 times [2020-09-15 13:28:11,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:28:11,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873797194] [2020-09-15 13:28:11,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:28:11,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:28:11,820 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-15 13:28:11,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873797194] [2020-09-15 13:28:11,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:28:11,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 13:28:11,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863940047] [2020-09-15 13:28:11,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 13:28:11,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:28:11,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 13:28:11,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 13:28:11,822 INFO L87 Difference]: Start difference. First operand 41467 states and 222391 transitions. Second operand 7 states. [2020-09-15 13:28:13,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:28:13,331 INFO L93 Difference]: Finished difference Result 92674 states and 452263 transitions. [2020-09-15 13:28:13,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 13:28:13,332 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-15 13:28:13,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:28:13,600 INFO L225 Difference]: With dead ends: 92674 [2020-09-15 13:28:13,601 INFO L226 Difference]: Without dead ends: 92597 [2020-09-15 13:28:13,601 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 [2020-09-15 13:28:14,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92597 states. [2020-09-15 13:28:15,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92597 to 42564. [2020-09-15 13:28:15,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42564 states. [2020-09-15 13:28:15,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42564 states to 42564 states and 227862 transitions. [2020-09-15 13:28:15,676 INFO L78 Accepts]: Start accepts. Automaton has 42564 states and 227862 transitions. Word has length 27 [2020-09-15 13:28:15,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:28:15,677 INFO L479 AbstractCegarLoop]: Abstraction has 42564 states and 227862 transitions. [2020-09-15 13:28:15,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 13:28:15,677 INFO L276 IsEmpty]: Start isEmpty. Operand 42564 states and 227862 transitions. [2020-09-15 13:28:15,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 13:28:15,682 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:28:15,682 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:28:15,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2020-09-15 13:28:15,682 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]=== [2020-09-15 13:28:15,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:28:15,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1294335650, now seen corresponding path program 2 times [2020-09-15 13:28:15,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:28:15,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948390633] [2020-09-15 13:28:15,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:28:15,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:28:15,763 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-15 13:28:15,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948390633] [2020-09-15 13:28:15,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:28:15,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 13:28:15,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565409555] [2020-09-15 13:28:15,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 13:28:15,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:28:15,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 13:28:15,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 13:28:15,765 INFO L87 Difference]: Start difference. First operand 42564 states and 227862 transitions. Second operand 7 states. [2020-09-15 13:28:17,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:28:17,035 INFO L93 Difference]: Finished difference Result 93922 states and 458312 transitions. [2020-09-15 13:28:17,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 13:28:17,036 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-15 13:28:17,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:28:17,314 INFO L225 Difference]: With dead ends: 93922 [2020-09-15 13:28:17,314 INFO L226 Difference]: Without dead ends: 93845 [2020-09-15 13:28:17,315 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 [2020-09-15 13:28:18,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93845 states. [2020-09-15 13:28:22,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93845 to 43794. [2020-09-15 13:28:22,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43794 states. [2020-09-15 13:28:22,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43794 states to 43794 states and 233791 transitions. [2020-09-15 13:28:22,483 INFO L78 Accepts]: Start accepts. Automaton has 43794 states and 233791 transitions. Word has length 27 [2020-09-15 13:28:22,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:28:22,483 INFO L479 AbstractCegarLoop]: Abstraction has 43794 states and 233791 transitions. [2020-09-15 13:28:22,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 13:28:22,483 INFO L276 IsEmpty]: Start isEmpty. Operand 43794 states and 233791 transitions. [2020-09-15 13:28:22,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-15 13:28:22,490 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:28:22,490 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:28:22,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2020-09-15 13:28:22,491 INFO L427 AbstractCegarLoop]: === Iteration 75 === [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]=== [2020-09-15 13:28:22,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:28:22,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1919686780, now seen corresponding path program 1 times [2020-09-15 13:28:22,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:28:22,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867383520] [2020-09-15 13:28:22,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:28:22,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:28:22,594 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 13:28:22,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867383520] [2020-09-15 13:28:22,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617607084] [2020-09-15 13:28:22,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:28:22,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:28:22,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 13:28:22,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:28:22,873 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 13:28:22,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:28:22,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 13:28:22,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574615275] [2020-09-15 13:28:22,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 13:28:22,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:28:22,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 13:28:22,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-15 13:28:22,875 INFO L87 Difference]: Start difference. First operand 43794 states and 233791 transitions. Second operand 16 states. [2020-09-15 13:28:25,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:28:25,085 INFO L93 Difference]: Finished difference Result 140781 states and 654227 transitions. [2020-09-15 13:28:25,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:28:25,086 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-09-15 13:28:25,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:28:25,480 INFO L225 Difference]: With dead ends: 140781 [2020-09-15 13:28:25,480 INFO L226 Difference]: Without dead ends: 140737 [2020-09-15 13:28:25,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 13:28:27,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140737 states. [2020-09-15 13:28:28,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140737 to 43602. [2020-09-15 13:28:28,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43602 states. [2020-09-15 13:28:28,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43602 states to 43602 states and 232379 transitions. [2020-09-15 13:28:28,932 INFO L78 Accepts]: Start accepts. Automaton has 43602 states and 232379 transitions. Word has length 29 [2020-09-15 13:28:28,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:28:28,932 INFO L479 AbstractCegarLoop]: Abstraction has 43602 states and 232379 transitions. [2020-09-15 13:28:28,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 13:28:28,932 INFO L276 IsEmpty]: Start isEmpty. Operand 43602 states and 232379 transitions. [2020-09-15 13:28:28,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-15 13:28:28,939 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:28:28,939 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:28:29,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:28:29,140 INFO L427 AbstractCegarLoop]: === Iteration 76 === [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]=== [2020-09-15 13:28:29,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:28:29,141 INFO L82 PathProgramCache]: Analyzing trace with hash -422590804, now seen corresponding path program 1 times [2020-09-15 13:28:29,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:28:29,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146440666] [2020-09-15 13:28:29,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:28:29,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:28:29,744 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 13:28:29,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146440666] [2020-09-15 13:28:29,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992782474] [2020-09-15 13:28:29,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:28:29,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:28:29,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 13:28:29,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:28:30,018 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 13:28:30,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:28:30,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 13:28:30,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049619714] [2020-09-15 13:28:30,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 13:28:30,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:28:30,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 13:28:30,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-15 13:28:30,020 INFO L87 Difference]: Start difference. First operand 43602 states and 232379 transitions. Second operand 16 states. [2020-09-15 13:28:32,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:28:32,084 INFO L93 Difference]: Finished difference Result 139468 states and 647412 transitions. [2020-09-15 13:28:32,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:28:32,085 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-09-15 13:28:32,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:28:32,481 INFO L225 Difference]: With dead ends: 139468 [2020-09-15 13:28:32,481 INFO L226 Difference]: Without dead ends: 139424 [2020-09-15 13:28:32,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 13:28:33,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139424 states. [2020-09-15 13:28:35,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139424 to 43506. [2020-09-15 13:28:35,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43506 states. [2020-09-15 13:28:36,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43506 states to 43506 states and 231546 transitions. [2020-09-15 13:28:36,014 INFO L78 Accepts]: Start accepts. Automaton has 43506 states and 231546 transitions. Word has length 29 [2020-09-15 13:28:36,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:28:36,014 INFO L479 AbstractCegarLoop]: Abstraction has 43506 states and 231546 transitions. [2020-09-15 13:28:36,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 13:28:36,014 INFO L276 IsEmpty]: Start isEmpty. Operand 43506 states and 231546 transitions. [2020-09-15 13:28:36,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-15 13:28:36,021 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:28:36,021 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:28:36,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:28:36,222 INFO L427 AbstractCegarLoop]: === Iteration 77 === [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]=== [2020-09-15 13:28:36,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:28:36,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1608517554, now seen corresponding path program 1 times [2020-09-15 13:28:36,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:28:36,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821022700] [2020-09-15 13:28:36,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:28:36,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:28:36,333 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 13:28:36,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821022700] [2020-09-15 13:28:36,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956403013] [2020-09-15 13:28:36,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:28:36,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:28:36,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 13:28:36,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:28:36,598 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 13:28:36,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:28:36,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 13:28:36,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154327439] [2020-09-15 13:28:36,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 13:28:36,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:28:36,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 13:28:36,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-15 13:28:36,600 INFO L87 Difference]: Start difference. First operand 43506 states and 231546 transitions. Second operand 16 states. [2020-09-15 13:28:39,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:28:39,146 INFO L93 Difference]: Finished difference Result 138170 states and 641113 transitions. [2020-09-15 13:28:39,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:28:39,147 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-09-15 13:28:39,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:28:39,534 INFO L225 Difference]: With dead ends: 138170 [2020-09-15 13:28:39,535 INFO L226 Difference]: Without dead ends: 138126 [2020-09-15 13:28:39,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 13:28:40,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138126 states. [2020-09-15 13:28:42,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138126 to 43481. [2020-09-15 13:28:42,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43481 states. [2020-09-15 13:28:43,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43481 states to 43481 states and 231123 transitions. [2020-09-15 13:28:43,118 INFO L78 Accepts]: Start accepts. Automaton has 43481 states and 231123 transitions. Word has length 29 [2020-09-15 13:28:43,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:28:43,118 INFO L479 AbstractCegarLoop]: Abstraction has 43481 states and 231123 transitions. [2020-09-15 13:28:43,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 13:28:43,118 INFO L276 IsEmpty]: Start isEmpty. Operand 43481 states and 231123 transitions. [2020-09-15 13:28:43,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-15 13:28:43,126 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:28:43,126 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:28:43,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,78 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:28:43,326 INFO L427 AbstractCegarLoop]: === Iteration 78 === [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]=== [2020-09-15 13:28:43,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:28:43,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1153508284, now seen corresponding path program 2 times [2020-09-15 13:28:43,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:28:43,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316754359] [2020-09-15 13:28:43,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:28:43,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:28:43,430 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-15 13:28:43,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316754359] [2020-09-15 13:28:43,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659535455] [2020-09-15 13:28:43,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 13:28:43,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 13:28:43,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 13:28:43,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 13:28:43,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 13:28:43,695 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-15 13:28:43,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 13:28:43,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 13:28:43,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151354820] [2020-09-15 13:28:43,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 13:28:43,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:28:43,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 13:28:43,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-15 13:28:43,697 INFO L87 Difference]: Start difference. First operand 43481 states and 231123 transitions. Second operand 16 states. [2020-09-15 13:28:45,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:28:45,951 INFO L93 Difference]: Finished difference Result 135919 states and 629813 transitions. [2020-09-15 13:28:45,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 13:28:45,952 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-09-15 13:28:45,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:28:47,371 INFO L225 Difference]: With dead ends: 135919 [2020-09-15 13:28:47,371 INFO L226 Difference]: Without dead ends: 135873 [2020-09-15 13:28:47,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 13:28:48,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135873 states.