/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-lit/fkp2013-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-21 23:09:52,690 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-21 23:09:52,692 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-21 23:09:52,716 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-21 23:09:52,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-21 23:09:52,717 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-21 23:09:52,719 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-21 23:09:52,720 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-21 23:09:52,722 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-21 23:09:52,723 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-21 23:09:52,724 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-21 23:09:52,725 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-21 23:09:52,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-21 23:09:52,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-21 23:09:52,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-21 23:09:52,728 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-21 23:09:52,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-21 23:09:52,730 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-21 23:09:52,732 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-21 23:09:52,733 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-21 23:09:52,735 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-21 23:09:52,736 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-21 23:09:52,737 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-21 23:09:52,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-21 23:09:52,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-21 23:09:52,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-21 23:09:52,741 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-21 23:09:52,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-21 23:09:52,742 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-21 23:09:52,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-21 23:09:52,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-21 23:09:52,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-21 23:09:52,746 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-21 23:09:52,747 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-21 23:09:52,748 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-21 23:09:52,749 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-21 23:09:52,750 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-21 23:09:52,750 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-21 23:09:52,750 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-21 23:09:52,753 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-21 23:09:52,762 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-21 23:09:52,763 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-10-21 23:09:52,802 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-21 23:09:52,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-21 23:09:52,804 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-21 23:09:52,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-21 23:09:52,805 INFO L138 SettingsManager]: * Use SBE=true [2020-10-21 23:09:52,805 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-21 23:09:52,806 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-21 23:09:52,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-21 23:09:52,806 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-21 23:09:52,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-21 23:09:52,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-21 23:09:52,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-21 23:09:52,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-21 23:09:52,808 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-21 23:09:52,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-21 23:09:52,809 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-21 23:09:52,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-21 23:09:52,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-21 23:09:52,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-21 23:09:52,809 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-21 23:09:52,810 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-21 23:09:52,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 23:09:52,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-21 23:09:52,810 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-21 23:09:52,810 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-21 23:09:52,811 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-21 23:09:52,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-21 23:09:52,811 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-21 23:09:52,811 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-21 23:09:53,126 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-21 23:09:53,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-21 23:09:53,146 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-21 23:09:53,147 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-21 23:09:53,148 INFO L275 PluginConnector]: CDTParser initialized [2020-10-21 23:09:53,149 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/fkp2013-1.i [2020-10-21 23:09:53,229 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b896729bf/0ae10eba273f4e0884801e1528d934b9/FLAG9d8b62257 [2020-10-21 23:09:53,761 INFO L306 CDTParser]: Found 1 translation units. [2020-10-21 23:09:53,762 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/fkp2013-1.i [2020-10-21 23:09:53,779 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b896729bf/0ae10eba273f4e0884801e1528d934b9/FLAG9d8b62257 [2020-10-21 23:09:54,055 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b896729bf/0ae10eba273f4e0884801e1528d934b9 [2020-10-21 23:09:54,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-21 23:09:54,072 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-21 23:09:54,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-21 23:09:54,073 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-21 23:09:54,077 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-21 23:09:54,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 11:09:54" (1/1) ... [2020-10-21 23:09:54,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25077106 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:54, skipping insertion in model container [2020-10-21 23:09:54,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 11:09:54" (1/1) ... [2020-10-21 23:09:54,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-21 23:09:54,158 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-21 23:09:54,641 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 23:09:54,651 INFO L203 MainTranslator]: Completed pre-run [2020-10-21 23:09:54,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 23:09:54,764 INFO L208 MainTranslator]: Completed translation [2020-10-21 23:09:54,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:54 WrapperNode [2020-10-21 23:09:54,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-21 23:09:54,766 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-21 23:09:54,766 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-21 23:09:54,766 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-21 23:09:54,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:54" (1/1) ... [2020-10-21 23:09:54,791 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:54" (1/1) ... [2020-10-21 23:09:54,812 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-21 23:09:54,813 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-21 23:09:54,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-21 23:09:54,813 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-21 23:09:54,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:54" (1/1) ... [2020-10-21 23:09:54,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:54" (1/1) ... [2020-10-21 23:09:54,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:54" (1/1) ... [2020-10-21 23:09:54,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:54" (1/1) ... [2020-10-21 23:09:54,829 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:54" (1/1) ... [2020-10-21 23:09:54,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:54" (1/1) ... [2020-10-21 23:09:54,836 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:54" (1/1) ... [2020-10-21 23:09:54,839 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-21 23:09:54,839 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-21 23:09:54,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-21 23:09:54,840 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-21 23:09:54,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 23:09:54,913 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-21 23:09:54,914 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-21 23:09:54,914 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-21 23:09:54,914 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-21 23:09:54,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-21 23:09:54,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-21 23:09:54,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-21 23:09:54,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-21 23:09:54,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-21 23:09:54,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-21 23:09:54,916 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-21 23:09:55,272 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-21 23:09:55,272 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-21 23:09:55,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 11:09:55 BoogieIcfgContainer [2020-10-21 23:09:55,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-21 23:09:55,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-21 23:09:55,277 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-21 23:09:55,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-21 23:09:55,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 11:09:54" (1/3) ... [2020-10-21 23:09:55,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d64a5b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 11:09:55, skipping insertion in model container [2020-10-21 23:09:55,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:54" (2/3) ... [2020-10-21 23:09:55,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d64a5b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 11:09:55, skipping insertion in model container [2020-10-21 23:09:55,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 11:09:55" (3/3) ... [2020-10-21 23:09:55,284 INFO L111 eAbstractionObserver]: Analyzing ICFG fkp2013-1.i [2020-10-21 23:09:55,297 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-21 23:09:55,297 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-21 23:09:55,305 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-21 23:09:55,306 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-21 23:09:55,344 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:55,345 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:55,345 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:55,347 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:55,347 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:55,347 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:55,348 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:55,348 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:55,348 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:55,349 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:55,349 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:55,349 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:55,349 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:55,350 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:55,350 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:55,350 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:55,351 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:55,351 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:55,351 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:55,351 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:55,351 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:55,352 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:55,352 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:55,354 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:55,354 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:55,358 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:55,358 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:55,359 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:55,359 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:55,359 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:55,359 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:55,360 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:55,360 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:55,365 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:55,366 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:55,366 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:55,366 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:55,367 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:55,369 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 23:09:55,383 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-21 23:09:55,405 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 23:09:55,406 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 23:09:55,406 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-21 23:09:55,406 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 23:09:55,406 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 23:09:55,406 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 23:09:55,407 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 23:09:55,407 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 23:09:55,421 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-21 23:09:55,422 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 60 transitions, 130 flow [2020-10-21 23:09:55,424 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 60 transitions, 130 flow [2020-10-21 23:09:55,427 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 63 places, 60 transitions, 130 flow [2020-10-21 23:09:55,483 INFO L129 PetriNetUnfolder]: 4/70 cut-off events. [2020-10-21 23:09:55,483 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-21 23:09:55,493 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 70 events. 4/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 123 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 54. Up to 4 conditions per place. [2020-10-21 23:09:55,498 INFO L116 LiptonReduction]: Number of co-enabled transitions 942 [2020-10-21 23:09:56,665 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2020-10-21 23:09:57,086 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2020-10-21 23:09:57,204 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-21 23:09:57,214 INFO L131 LiptonReduction]: Checked pairs total: 879 [2020-10-21 23:09:57,215 INFO L133 LiptonReduction]: Total number of compositions: 60 [2020-10-21 23:09:57,222 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 12 transitions, 34 flow [2020-10-21 23:09:57,235 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-21 23:09:57,237 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-21 23:09:57,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-21 23:09:57,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:09:57,245 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-21 23:09:57,245 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 23:09:57,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:09:57,251 INFO L82 PathProgramCache]: Analyzing trace with hash 245395, now seen corresponding path program 1 times [2020-10-21 23:09:57,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:09:57,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5577368] [2020-10-21 23:09:57,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:09:57,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:09:57,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:09:57,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5577368] [2020-10-21 23:09:57,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:09:57,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 23:09:57,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994227213] [2020-10-21 23:09:57,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 23:09:57,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:09:57,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 23:09:57,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:09:57,460 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-10-21 23:09:57,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:09:57,496 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2020-10-21 23:09:57,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 23:09:57,498 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-21 23:09:57,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:09:57,510 INFO L225 Difference]: With dead ends: 35 [2020-10-21 23:09:57,510 INFO L226 Difference]: Without dead ends: 31 [2020-10-21 23:09:57,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:09:57,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-21 23:09:57,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-21 23:09:57,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-21 23:09:57,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 51 transitions. [2020-10-21 23:09:57,551 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 51 transitions. Word has length 3 [2020-10-21 23:09:57,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:09:57,551 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 51 transitions. [2020-10-21 23:09:57,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 23:09:57,552 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2020-10-21 23:09:57,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-21 23:09:57,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:09:57,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:09:57,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-21 23:09:57,553 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 23:09:57,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:09:57,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1037099168, now seen corresponding path program 1 times [2020-10-21 23:09:57,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:09:57,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996130080] [2020-10-21 23:09:57,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:09:57,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:09:57,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:09:57,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996130080] [2020-10-21 23:09:57,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:09:57,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 23:09:57,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453215241] [2020-10-21 23:09:57,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 23:09:57,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:09:57,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 23:09:57,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-21 23:09:57,684 INFO L87 Difference]: Start difference. First operand 31 states and 51 transitions. Second operand 4 states. [2020-10-21 23:09:57,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:09:57,698 INFO L93 Difference]: Finished difference Result 26 states and 42 transitions. [2020-10-21 23:09:57,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-21 23:09:57,699 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-21 23:09:57,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:09:57,700 INFO L225 Difference]: With dead ends: 26 [2020-10-21 23:09:57,700 INFO L226 Difference]: Without dead ends: 24 [2020-10-21 23:09:57,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-21 23:09:57,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-21 23:09:57,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-21 23:09:57,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-21 23:09:57,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 39 transitions. [2020-10-21 23:09:57,706 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 39 transitions. Word has length 7 [2020-10-21 23:09:57,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:09:57,706 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 39 transitions. [2020-10-21 23:09:57,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 23:09:57,706 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 39 transitions. [2020-10-21 23:09:57,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-21 23:09:57,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:09:57,707 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-21 23:09:57,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-21 23:09:57,708 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 23:09:57,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:09:57,708 INFO L82 PathProgramCache]: Analyzing trace with hash -2085304898, now seen corresponding path program 1 times [2020-10-21 23:09:57,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:09:57,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099305435] [2020-10-21 23:09:57,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:09:57,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 23:09:57,737 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 23:09:57,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 23:09:57,756 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 23:09:57,788 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-21 23:09:57,789 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-21 23:09:57,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-21 23:09:57,794 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-21 23:09:57,794 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-21 23:09:57,815 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,815 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,816 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,816 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,816 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,816 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,816 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,817 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,817 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,817 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,817 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,817 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,817 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,817 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,818 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,818 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,818 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,818 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,819 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,819 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,819 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,820 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,820 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,820 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,820 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,820 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,821 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,821 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,821 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,821 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,821 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,822 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,822 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,822 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,823 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,823 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,823 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,823 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,824 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,824 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,824 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,824 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,824 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,825 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,825 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,825 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,825 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,825 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,826 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,826 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,826 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,827 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,827 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,827 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,827 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,827 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,828 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,828 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,829 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,830 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,830 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,830 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,830 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,830 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,831 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,831 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,832 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,832 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,832 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,833 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,833 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,834 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,834 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,835 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,835 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,835 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:57,836 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 23:09:57,836 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-21 23:09:57,837 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 23:09:57,837 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 23:09:57,837 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-21 23:09:57,837 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 23:09:57,837 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 23:09:57,837 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 23:09:57,837 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 23:09:57,838 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 23:09:57,840 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-21 23:09:57,840 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 83 transitions, 190 flow [2020-10-21 23:09:57,840 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 88 places, 83 transitions, 190 flow [2020-10-21 23:09:57,841 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 88 places, 83 transitions, 190 flow [2020-10-21 23:09:57,864 INFO L129 PetriNetUnfolder]: 5/92 cut-off events. [2020-10-21 23:09:57,865 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-21 23:09:57,866 INFO L80 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 92 events. 5/92 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 169 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 101. Up to 6 conditions per place. [2020-10-21 23:09:57,869 INFO L116 LiptonReduction]: Number of co-enabled transitions 1428 [2020-10-21 23:09:59,396 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 85 [2020-10-21 23:09:59,511 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-21 23:09:59,528 INFO L131 LiptonReduction]: Checked pairs total: 1665 [2020-10-21 23:09:59,528 INFO L133 LiptonReduction]: Total number of compositions: 83 [2020-10-21 23:09:59,529 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 66 flow [2020-10-21 23:09:59,543 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 224 states. [2020-10-21 23:09:59,543 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states. [2020-10-21 23:09:59,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-21 23:09:59,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:09:59,544 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-21 23:09:59,544 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:09:59,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:09:59,545 INFO L82 PathProgramCache]: Analyzing trace with hash 432278, now seen corresponding path program 1 times [2020-10-21 23:09:59,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:09:59,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447228901] [2020-10-21 23:09:59,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:09:59,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:09:59,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:09:59,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447228901] [2020-10-21 23:09:59,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:09:59,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 23:09:59,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051986027] [2020-10-21 23:09:59,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 23:09:59,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:09:59,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 23:09:59,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:09:59,577 INFO L87 Difference]: Start difference. First operand 224 states. Second operand 3 states. [2020-10-21 23:09:59,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:09:59,603 INFO L93 Difference]: Finished difference Result 185 states and 459 transitions. [2020-10-21 23:09:59,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 23:09:59,603 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-21 23:09:59,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:09:59,608 INFO L225 Difference]: With dead ends: 185 [2020-10-21 23:09:59,608 INFO L226 Difference]: Without dead ends: 171 [2020-10-21 23:09:59,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:09:59,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-21 23:09:59,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-10-21 23:09:59,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-21 23:09:59,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 418 transitions. [2020-10-21 23:09:59,654 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 418 transitions. Word has length 3 [2020-10-21 23:09:59,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:09:59,655 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 418 transitions. [2020-10-21 23:09:59,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 23:09:59,655 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 418 transitions. [2020-10-21 23:09:59,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 23:09:59,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:09:59,656 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:09:59,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-21 23:09:59,656 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:09:59,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:09:59,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1541056090, now seen corresponding path program 1 times [2020-10-21 23:09:59,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:09:59,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874111231] [2020-10-21 23:09:59,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:09:59,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:09:59,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:09:59,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874111231] [2020-10-21 23:09:59,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:09:59,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:09:59,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879835730] [2020-10-21 23:09:59,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:09:59,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:09:59,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:09:59,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:09:59,759 INFO L87 Difference]: Start difference. First operand 171 states and 418 transitions. Second operand 5 states. [2020-10-21 23:09:59,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:09:59,819 INFO L93 Difference]: Finished difference Result 205 states and 460 transitions. [2020-10-21 23:09:59,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:09:59,825 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-21 23:09:59,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:09:59,830 INFO L225 Difference]: With dead ends: 205 [2020-10-21 23:09:59,830 INFO L226 Difference]: Without dead ends: 201 [2020-10-21 23:09:59,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:09:59,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-21 23:09:59,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 162. [2020-10-21 23:09:59,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-21 23:09:59,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 399 transitions. [2020-10-21 23:09:59,853 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 399 transitions. Word has length 9 [2020-10-21 23:09:59,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:09:59,853 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 399 transitions. [2020-10-21 23:09:59,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:09:59,854 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 399 transitions. [2020-10-21 23:09:59,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 23:09:59,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:09:59,856 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:09:59,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-21 23:09:59,856 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:09:59,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:09:59,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1863628944, now seen corresponding path program 1 times [2020-10-21 23:09:59,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:09:59,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535110359] [2020-10-21 23:09:59,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:09:59,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:09:59,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 23:09:59,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535110359] [2020-10-21 23:09:59,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:09:59,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:09:59,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796637266] [2020-10-21 23:09:59,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:09:59,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:09:59,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:09:59,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:09:59,903 INFO L87 Difference]: Start difference. First operand 162 states and 399 transitions. Second operand 5 states. [2020-10-21 23:09:59,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:09:59,949 INFO L93 Difference]: Finished difference Result 189 states and 423 transitions. [2020-10-21 23:09:59,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:09:59,950 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-21 23:09:59,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:09:59,952 INFO L225 Difference]: With dead ends: 189 [2020-10-21 23:09:59,952 INFO L226 Difference]: Without dead ends: 185 [2020-10-21 23:09:59,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:09:59,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-21 23:09:59,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 153. [2020-10-21 23:09:59,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-21 23:09:59,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 367 transitions. [2020-10-21 23:09:59,966 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 367 transitions. Word has length 13 [2020-10-21 23:09:59,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:09:59,967 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 367 transitions. [2020-10-21 23:09:59,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:09:59,967 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 367 transitions. [2020-10-21 23:09:59,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-21 23:09:59,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:09:59,968 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:09:59,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-21 23:09:59,969 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:09:59,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:09:59,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1934445161, now seen corresponding path program 1 times [2020-10-21 23:09:59,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:09:59,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588487291] [2020-10-21 23:09:59,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:09:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 23:09:59,988 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 23:10:00,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 23:10:00,002 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 23:10:00,011 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-21 23:10:00,012 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-21 23:10:00,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-21 23:10:00,013 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-21 23:10:00,014 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-21 23:10:00,026 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,026 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,026 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,027 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,027 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,030 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,030 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,031 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,031 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,031 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,031 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,031 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,032 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,032 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,032 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,033 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,033 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,033 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,033 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,033 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,034 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,034 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,034 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,034 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,034 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,034 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,035 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,037 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,037 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,037 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,037 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,037 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,038 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,038 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,038 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,041 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,041 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,041 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,041 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,041 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,042 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,042 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,042 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,042 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,042 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,042 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,043 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,043 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,043 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,043 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,043 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,044 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,044 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,044 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,044 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,044 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,044 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,045 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,045 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,045 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,045 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,045 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,046 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,046 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,046 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,046 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,046 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,046 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,047 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,047 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,047 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,047 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,047 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,047 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,048 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,048 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,048 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,048 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,049 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,049 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,049 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,049 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,049 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,052 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,052 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,052 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,052 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,052 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,053 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,053 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,053 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,054 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,054 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,055 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,055 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,055 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,055 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,055 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,055 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,057 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,057 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,058 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,058 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,058 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,059 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,059 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,060 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,060 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,060 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,061 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,061 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,062 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,062 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,062 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:00,063 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 23:10:00,063 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-21 23:10:00,063 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 23:10:00,064 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 23:10:00,064 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-21 23:10:00,064 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 23:10:00,064 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 23:10:00,064 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 23:10:00,064 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 23:10:00,064 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 23:10:00,066 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-21 23:10:00,066 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 113 places, 106 transitions, 254 flow [2020-10-21 23:10:00,067 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 113 places, 106 transitions, 254 flow [2020-10-21 23:10:00,067 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 113 places, 106 transitions, 254 flow [2020-10-21 23:10:00,092 INFO L129 PetriNetUnfolder]: 6/114 cut-off events. [2020-10-21 23:10:00,092 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-21 23:10:00,094 INFO L80 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 114 events. 6/114 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 198 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 128. Up to 8 conditions per place. [2020-10-21 23:10:00,097 INFO L116 LiptonReduction]: Number of co-enabled transitions 1998 [2020-10-21 23:10:01,824 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 85 [2020-10-21 23:10:01,976 INFO L131 LiptonReduction]: Checked pairs total: 2809 [2020-10-21 23:10:01,976 INFO L133 LiptonReduction]: Total number of compositions: 111 [2020-10-21 23:10:01,977 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 27 transitions, 96 flow [2020-10-21 23:10:02,003 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 683 states. [2020-10-21 23:10:02,003 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states. [2020-10-21 23:10:02,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-21 23:10:02,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:02,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-21 23:10:02,004 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:02,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:02,004 INFO L82 PathProgramCache]: Analyzing trace with hash 667761, now seen corresponding path program 1 times [2020-10-21 23:10:02,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:02,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995168707] [2020-10-21 23:10:02,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:02,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:02,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:10:02,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995168707] [2020-10-21 23:10:02,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:10:02,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 23:10:02,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121153230] [2020-10-21 23:10:02,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 23:10:02,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:02,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 23:10:02,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:10:02,037 INFO L87 Difference]: Start difference. First operand 683 states. Second operand 3 states. [2020-10-21 23:10:02,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:02,070 INFO L93 Difference]: Finished difference Result 600 states and 1886 transitions. [2020-10-21 23:10:02,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 23:10:02,073 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-21 23:10:02,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:02,079 INFO L225 Difference]: With dead ends: 600 [2020-10-21 23:10:02,080 INFO L226 Difference]: Without dead ends: 559 [2020-10-21 23:10:02,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:10:02,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-10-21 23:10:02,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2020-10-21 23:10:02,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-21 23:10:02,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1737 transitions. [2020-10-21 23:10:02,130 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1737 transitions. Word has length 3 [2020-10-21 23:10:02,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:02,130 INFO L481 AbstractCegarLoop]: Abstraction has 559 states and 1737 transitions. [2020-10-21 23:10:02,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 23:10:02,130 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1737 transitions. [2020-10-21 23:10:02,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 23:10:02,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:02,131 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:02,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-21 23:10:02,131 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:02,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:02,132 INFO L82 PathProgramCache]: Analyzing trace with hash 264166637, now seen corresponding path program 1 times [2020-10-21 23:10:02,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:02,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986935527] [2020-10-21 23:10:02,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:02,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:02,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:10:02,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986935527] [2020-10-21 23:10:02,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:10:02,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:10:02,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289309710] [2020-10-21 23:10:02,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:10:02,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:02,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:10:02,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:10:02,175 INFO L87 Difference]: Start difference. First operand 559 states and 1737 transitions. Second operand 5 states. [2020-10-21 23:10:02,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:02,254 INFO L93 Difference]: Finished difference Result 817 states and 2317 transitions. [2020-10-21 23:10:02,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:10:02,255 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-21 23:10:02,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:02,262 INFO L225 Difference]: With dead ends: 817 [2020-10-21 23:10:02,262 INFO L226 Difference]: Without dead ends: 812 [2020-10-21 23:10:02,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:10:02,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-10-21 23:10:02,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 585. [2020-10-21 23:10:02,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-10-21 23:10:02,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1832 transitions. [2020-10-21 23:10:02,291 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1832 transitions. Word has length 9 [2020-10-21 23:10:02,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:02,291 INFO L481 AbstractCegarLoop]: Abstraction has 585 states and 1832 transitions. [2020-10-21 23:10:02,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:10:02,292 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1832 transitions. [2020-10-21 23:10:02,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 23:10:02,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:02,293 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:02,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-21 23:10:02,293 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:02,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:02,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1293864876, now seen corresponding path program 1 times [2020-10-21 23:10:02,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:02,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256143408] [2020-10-21 23:10:02,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:02,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:02,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 23:10:02,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256143408] [2020-10-21 23:10:02,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:10:02,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:10:02,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072248236] [2020-10-21 23:10:02,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:10:02,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:02,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:10:02,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:10:02,331 INFO L87 Difference]: Start difference. First operand 585 states and 1832 transitions. Second operand 5 states. [2020-10-21 23:10:02,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:02,403 INFO L93 Difference]: Finished difference Result 843 states and 2406 transitions. [2020-10-21 23:10:02,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:10:02,403 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-21 23:10:02,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:02,410 INFO L225 Difference]: With dead ends: 843 [2020-10-21 23:10:02,410 INFO L226 Difference]: Without dead ends: 836 [2020-10-21 23:10:02,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:10:02,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-10-21 23:10:02,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 611. [2020-10-21 23:10:02,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-10-21 23:10:02,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1906 transitions. [2020-10-21 23:10:02,437 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1906 transitions. Word has length 13 [2020-10-21 23:10:02,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:02,437 INFO L481 AbstractCegarLoop]: Abstraction has 611 states and 1906 transitions. [2020-10-21 23:10:02,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:10:02,438 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1906 transitions. [2020-10-21 23:10:02,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 23:10:02,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:02,439 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:02,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-21 23:10:02,439 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:02,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:02,440 INFO L82 PathProgramCache]: Analyzing trace with hash 576563147, now seen corresponding path program 1 times [2020-10-21 23:10:02,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:02,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18307189] [2020-10-21 23:10:02,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:02,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:02,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:10:02,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18307189] [2020-10-21 23:10:02,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771436724] [2020-10-21 23:10:02,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:10:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:02,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-21 23:10:02,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:10:02,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:10:02,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:10:02,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-21 23:10:02,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871281877] [2020-10-21 23:10:02,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:10:02,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:02,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:10:02,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:10:02,699 INFO L87 Difference]: Start difference. First operand 611 states and 1906 transitions. Second operand 9 states. [2020-10-21 23:10:02,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:02,891 INFO L93 Difference]: Finished difference Result 1059 states and 2818 transitions. [2020-10-21 23:10:02,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:10:02,892 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-10-21 23:10:02,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:02,900 INFO L225 Difference]: With dead ends: 1059 [2020-10-21 23:10:02,900 INFO L226 Difference]: Without dead ends: 1052 [2020-10-21 23:10:02,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-21 23:10:02,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-10-21 23:10:02,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 591. [2020-10-21 23:10:02,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-10-21 23:10:02,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1840 transitions. [2020-10-21 23:10:02,934 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1840 transitions. Word has length 15 [2020-10-21 23:10:02,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:02,934 INFO L481 AbstractCegarLoop]: Abstraction has 591 states and 1840 transitions. [2020-10-21 23:10:02,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:10:02,935 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1840 transitions. [2020-10-21 23:10:02,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 23:10:02,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:02,936 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:03,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-21 23:10:03,150 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:03,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:03,150 INFO L82 PathProgramCache]: Analyzing trace with hash -2136392117, now seen corresponding path program 2 times [2020-10-21 23:10:03,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:03,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256555205] [2020-10-21 23:10:03,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:03,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:03,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 23:10:03,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256555205] [2020-10-21 23:10:03,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:10:03,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:10:03,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111214932] [2020-10-21 23:10:03,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:10:03,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:03,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:10:03,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:10:03,200 INFO L87 Difference]: Start difference. First operand 591 states and 1840 transitions. Second operand 7 states. [2020-10-21 23:10:03,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:03,366 INFO L93 Difference]: Finished difference Result 1053 states and 2807 transitions. [2020-10-21 23:10:03,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:10:03,367 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-21 23:10:03,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:03,374 INFO L225 Difference]: With dead ends: 1053 [2020-10-21 23:10:03,375 INFO L226 Difference]: Without dead ends: 1045 [2020-10-21 23:10:03,375 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-21 23:10:03,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-10-21 23:10:03,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 536. [2020-10-21 23:10:03,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-10-21 23:10:03,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1688 transitions. [2020-10-21 23:10:03,402 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1688 transitions. Word has length 15 [2020-10-21 23:10:03,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:03,402 INFO L481 AbstractCegarLoop]: Abstraction has 536 states and 1688 transitions. [2020-10-21 23:10:03,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:10:03,403 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1688 transitions. [2020-10-21 23:10:03,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-21 23:10:03,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:03,404 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:03,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-21 23:10:03,405 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:03,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:03,405 INFO L82 PathProgramCache]: Analyzing trace with hash 304408619, now seen corresponding path program 1 times [2020-10-21 23:10:03,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:03,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937186350] [2020-10-21 23:10:03,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:03,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:03,442 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:10:03,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937186350] [2020-10-21 23:10:03,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:10:03,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:10:03,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318176809] [2020-10-21 23:10:03,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:10:03,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:03,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:10:03,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:10:03,444 INFO L87 Difference]: Start difference. First operand 536 states and 1688 transitions. Second operand 5 states. [2020-10-21 23:10:03,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:03,513 INFO L93 Difference]: Finished difference Result 736 states and 2123 transitions. [2020-10-21 23:10:03,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:10:03,517 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-21 23:10:03,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:03,522 INFO L225 Difference]: With dead ends: 736 [2020-10-21 23:10:03,523 INFO L226 Difference]: Without dead ends: 728 [2020-10-21 23:10:03,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:10:03,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-10-21 23:10:03,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 549. [2020-10-21 23:10:03,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-10-21 23:10:03,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 1684 transitions. [2020-10-21 23:10:03,544 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 1684 transitions. Word has length 17 [2020-10-21 23:10:03,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:03,544 INFO L481 AbstractCegarLoop]: Abstraction has 549 states and 1684 transitions. [2020-10-21 23:10:03,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:10:03,544 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 1684 transitions. [2020-10-21 23:10:03,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-21 23:10:03,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:03,546 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:03,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-21 23:10:03,546 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:03,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:03,546 INFO L82 PathProgramCache]: Analyzing trace with hash 842141785, now seen corresponding path program 1 times [2020-10-21 23:10:03,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:03,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507448872] [2020-10-21 23:10:03,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 23:10:03,560 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 23:10:03,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 23:10:03,571 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 23:10:03,580 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-21 23:10:03,580 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-21 23:10:03,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-21 23:10:03,581 WARN L371 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-21 23:10:03,581 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-21 23:10:03,594 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,594 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,594 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,595 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,595 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,595 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,595 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,595 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,595 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,596 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,596 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,596 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,596 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,596 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,596 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,596 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,597 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,597 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,597 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,597 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,597 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,597 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,597 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,597 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,598 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,598 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,598 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,598 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,598 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,599 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,599 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,599 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,599 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,599 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,599 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,600 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,600 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,600 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,600 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,600 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,601 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,601 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,601 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,601 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,601 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,601 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,602 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,602 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,602 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,602 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,602 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,602 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,603 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,603 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,603 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,603 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,603 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,603 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,604 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,604 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,604 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,604 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,604 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,604 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,604 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,604 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,605 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,605 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,605 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,605 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,605 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,606 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,606 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,606 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,606 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,606 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,606 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,607 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,607 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,607 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,607 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,607 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,607 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,608 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,608 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,608 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,608 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,608 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,608 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,608 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,609 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,609 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,609 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,609 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,609 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,609 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,609 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,610 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,610 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,610 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,610 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,611 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,611 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,611 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,611 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,611 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,611 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,612 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,616 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,617 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,617 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,617 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,617 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,617 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,617 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,618 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,619 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,619 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,619 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,619 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,620 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,620 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,620 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,620 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,621 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,622 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,622 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,622 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,622 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,622 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,622 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,623 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,624 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,624 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,624 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,625 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,625 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,626 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,626 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,626 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,626 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,627 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,628 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,628 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,628 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,628 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,628 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,629 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,630 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,630 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,630 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,630 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:03,631 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 23:10:03,632 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-21 23:10:03,632 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 23:10:03,632 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 23:10:03,632 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-21 23:10:03,632 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 23:10:03,632 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 23:10:03,632 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 23:10:03,633 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 23:10:03,633 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 23:10:03,635 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-21 23:10:03,635 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 138 places, 129 transitions, 322 flow [2020-10-21 23:10:03,635 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 138 places, 129 transitions, 322 flow [2020-10-21 23:10:03,635 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 138 places, 129 transitions, 322 flow [2020-10-21 23:10:03,660 INFO L129 PetriNetUnfolder]: 7/136 cut-off events. [2020-10-21 23:10:03,661 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-21 23:10:03,663 INFO L80 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 136 events. 7/136 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 235 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 156. Up to 10 conditions per place. [2020-10-21 23:10:03,667 INFO L116 LiptonReduction]: Number of co-enabled transitions 2652 [2020-10-21 23:10:05,524 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-10-21 23:10:05,759 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-21 23:10:05,869 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-21 23:10:05,880 INFO L131 LiptonReduction]: Checked pairs total: 3837 [2020-10-21 23:10:05,880 INFO L133 LiptonReduction]: Total number of compositions: 139 [2020-10-21 23:10:05,881 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 33 transitions, 130 flow [2020-10-21 23:10:06,021 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2060 states. [2020-10-21 23:10:06,021 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states. [2020-10-21 23:10:06,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-21 23:10:06,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:06,021 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-21 23:10:06,022 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 23:10:06,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:06,022 INFO L82 PathProgramCache]: Analyzing trace with hash 959619, now seen corresponding path program 1 times [2020-10-21 23:10:06,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:06,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964946049] [2020-10-21 23:10:06,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:06,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:06,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:10:06,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964946049] [2020-10-21 23:10:06,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:10:06,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 23:10:06,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423779922] [2020-10-21 23:10:06,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 23:10:06,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:06,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 23:10:06,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:10:06,048 INFO L87 Difference]: Start difference. First operand 2060 states. Second operand 3 states. [2020-10-21 23:10:06,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:06,085 INFO L93 Difference]: Finished difference Result 1889 states and 7217 transitions. [2020-10-21 23:10:06,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 23:10:06,085 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-21 23:10:06,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:06,102 INFO L225 Difference]: With dead ends: 1889 [2020-10-21 23:10:06,102 INFO L226 Difference]: Without dead ends: 1767 [2020-10-21 23:10:06,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:10:06,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-10-21 23:10:06,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1767. [2020-10-21 23:10:06,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2020-10-21 23:10:06,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 6690 transitions. [2020-10-21 23:10:06,178 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 6690 transitions. Word has length 3 [2020-10-21 23:10:06,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:06,178 INFO L481 AbstractCegarLoop]: Abstraction has 1767 states and 6690 transitions. [2020-10-21 23:10:06,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 23:10:06,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 6690 transitions. [2020-10-21 23:10:06,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 23:10:06,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:06,179 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:06,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-21 23:10:06,179 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 23:10:06,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:06,180 INFO L82 PathProgramCache]: Analyzing trace with hash 323825071, now seen corresponding path program 1 times [2020-10-21 23:10:06,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:06,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698514189] [2020-10-21 23:10:06,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:06,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:06,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:10:06,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698514189] [2020-10-21 23:10:06,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:10:06,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:10:06,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366592431] [2020-10-21 23:10:06,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:10:06,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:06,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:10:06,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:10:06,216 INFO L87 Difference]: Start difference. First operand 1767 states and 6690 transitions. Second operand 5 states. [2020-10-21 23:10:06,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:06,295 INFO L93 Difference]: Finished difference Result 2905 states and 10138 transitions. [2020-10-21 23:10:06,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:10:06,296 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-21 23:10:06,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:06,321 INFO L225 Difference]: With dead ends: 2905 [2020-10-21 23:10:06,321 INFO L226 Difference]: Without dead ends: 2899 [2020-10-21 23:10:06,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:10:06,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-10-21 23:10:06,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1966. [2020-10-21 23:10:06,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1966 states. [2020-10-21 23:10:06,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 7503 transitions. [2020-10-21 23:10:06,417 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 7503 transitions. Word has length 9 [2020-10-21 23:10:06,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:06,417 INFO L481 AbstractCegarLoop]: Abstraction has 1966 states and 7503 transitions. [2020-10-21 23:10:06,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:10:06,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 7503 transitions. [2020-10-21 23:10:06,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 23:10:06,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:06,418 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:06,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-21 23:10:06,418 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 23:10:06,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:06,419 INFO L82 PathProgramCache]: Analyzing trace with hash -2079947915, now seen corresponding path program 1 times [2020-10-21 23:10:06,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:06,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753418791] [2020-10-21 23:10:06,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:06,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:06,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 23:10:06,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753418791] [2020-10-21 23:10:06,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:10:06,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:10:06,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107355350] [2020-10-21 23:10:06,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:10:06,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:06,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:10:06,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:10:06,454 INFO L87 Difference]: Start difference. First operand 1966 states and 7503 transitions. Second operand 5 states. [2020-10-21 23:10:06,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:06,536 INFO L93 Difference]: Finished difference Result 3204 states and 11312 transitions. [2020-10-21 23:10:06,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:10:06,536 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-21 23:10:06,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:06,563 INFO L225 Difference]: With dead ends: 3204 [2020-10-21 23:10:06,564 INFO L226 Difference]: Without dead ends: 3194 [2020-10-21 23:10:06,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:10:06,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2020-10-21 23:10:06,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 2200. [2020-10-21 23:10:06,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-10-21 23:10:06,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 8453 transitions. [2020-10-21 23:10:06,662 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 8453 transitions. Word has length 13 [2020-10-21 23:10:06,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:06,662 INFO L481 AbstractCegarLoop]: Abstraction has 2200 states and 8453 transitions. [2020-10-21 23:10:06,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:10:06,663 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 8453 transitions. [2020-10-21 23:10:06,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 23:10:06,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:06,663 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:06,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-21 23:10:06,664 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 23:10:06,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:06,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1122196189, now seen corresponding path program 1 times [2020-10-21 23:10:06,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:06,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070156935] [2020-10-21 23:10:06,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:06,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:06,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:10:06,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070156935] [2020-10-21 23:10:06,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109319286] [2020-10-21 23:10:06,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:10:06,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:06,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-21 23:10:06,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:10:06,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:10:06,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:10:06,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-21 23:10:06,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246959734] [2020-10-21 23:10:06,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:10:06,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:06,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:10:06,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:10:06,802 INFO L87 Difference]: Start difference. First operand 2200 states and 8453 transitions. Second operand 9 states. [2020-10-21 23:10:07,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:07,036 INFO L93 Difference]: Finished difference Result 4556 states and 14911 transitions. [2020-10-21 23:10:07,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:10:07,037 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-10-21 23:10:07,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:07,061 INFO L225 Difference]: With dead ends: 4556 [2020-10-21 23:10:07,061 INFO L226 Difference]: Without dead ends: 4546 [2020-10-21 23:10:07,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-21 23:10:07,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4546 states. [2020-10-21 23:10:07,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4546 to 2157. [2020-10-21 23:10:07,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2157 states. [2020-10-21 23:10:07,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 8278 transitions. [2020-10-21 23:10:07,219 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 8278 transitions. Word has length 15 [2020-10-21 23:10:07,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:07,219 INFO L481 AbstractCegarLoop]: Abstraction has 2157 states and 8278 transitions. [2020-10-21 23:10:07,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:10:07,219 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 8278 transitions. [2020-10-21 23:10:07,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 23:10:07,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:07,220 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:07,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-21 23:10:07,434 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 23:10:07,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:07,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1670165689, now seen corresponding path program 2 times [2020-10-21 23:10:07,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:07,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100366108] [2020-10-21 23:10:07,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:07,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 23:10:07,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100366108] [2020-10-21 23:10:07,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:10:07,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:10:07,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139716462] [2020-10-21 23:10:07,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:10:07,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:07,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:10:07,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:10:07,481 INFO L87 Difference]: Start difference. First operand 2157 states and 8278 transitions. Second operand 7 states. [2020-10-21 23:10:07,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:07,671 INFO L93 Difference]: Finished difference Result 4612 states and 15111 transitions. [2020-10-21 23:10:07,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:10:07,672 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-21 23:10:07,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:07,687 INFO L225 Difference]: With dead ends: 4612 [2020-10-21 23:10:07,687 INFO L226 Difference]: Without dead ends: 4601 [2020-10-21 23:10:07,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-21 23:10:07,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2020-10-21 23:10:07,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 2035. [2020-10-21 23:10:07,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2035 states. [2020-10-21 23:10:07,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 7845 transitions. [2020-10-21 23:10:07,785 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 7845 transitions. Word has length 15 [2020-10-21 23:10:07,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:07,785 INFO L481 AbstractCegarLoop]: Abstraction has 2035 states and 7845 transitions. [2020-10-21 23:10:07,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:10:07,785 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 7845 transitions. [2020-10-21 23:10:07,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-21 23:10:07,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:07,786 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:07,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-21 23:10:07,787 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 23:10:07,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:07,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1347598745, now seen corresponding path program 1 times [2020-10-21 23:10:07,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:07,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154147709] [2020-10-21 23:10:07,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:07,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:07,817 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:10:07,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154147709] [2020-10-21 23:10:07,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:10:07,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:10:07,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584053978] [2020-10-21 23:10:07,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:10:07,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:07,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:10:07,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:10:07,818 INFO L87 Difference]: Start difference. First operand 2035 states and 7845 transitions. Second operand 5 states. [2020-10-21 23:10:07,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:07,895 INFO L93 Difference]: Finished difference Result 3265 states and 11681 transitions. [2020-10-21 23:10:07,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:10:07,896 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-21 23:10:07,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:07,907 INFO L225 Difference]: With dead ends: 3265 [2020-10-21 23:10:07,907 INFO L226 Difference]: Without dead ends: 3250 [2020-10-21 23:10:07,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:10:07,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2020-10-21 23:10:07,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 2281. [2020-10-21 23:10:07,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2020-10-21 23:10:07,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 8755 transitions. [2020-10-21 23:10:07,993 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 8755 transitions. Word has length 17 [2020-10-21 23:10:07,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:07,993 INFO L481 AbstractCegarLoop]: Abstraction has 2281 states and 8755 transitions. [2020-10-21 23:10:07,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:10:07,993 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 8755 transitions. [2020-10-21 23:10:07,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 23:10:07,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:07,994 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:07,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-21 23:10:07,995 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 23:10:07,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:07,995 INFO L82 PathProgramCache]: Analyzing trace with hash -385592249, now seen corresponding path program 1 times [2020-10-21 23:10:07,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:07,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396337506] [2020-10-21 23:10:07,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:08,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:08,041 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 23:10:08,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396337506] [2020-10-21 23:10:08,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013343178] [2020-10-21 23:10:08,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:10:08,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:08,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-21 23:10:08,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:10:08,145 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 23:10:08,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:10:08,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-21 23:10:08,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216183219] [2020-10-21 23:10:08,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:10:08,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:08,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:10:08,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:10:08,147 INFO L87 Difference]: Start difference. First operand 2281 states and 8755 transitions. Second operand 9 states. [2020-10-21 23:10:08,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:08,366 INFO L93 Difference]: Finished difference Result 4825 states and 15986 transitions. [2020-10-21 23:10:08,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:10:08,367 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-10-21 23:10:08,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:08,389 INFO L225 Difference]: With dead ends: 4825 [2020-10-21 23:10:08,389 INFO L226 Difference]: Without dead ends: 4813 [2020-10-21 23:10:08,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-21 23:10:08,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4813 states. [2020-10-21 23:10:08,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4813 to 2305. [2020-10-21 23:10:08,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-10-21 23:10:08,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 8815 transitions. [2020-10-21 23:10:08,579 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 8815 transitions. Word has length 19 [2020-10-21 23:10:08,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:08,579 INFO L481 AbstractCegarLoop]: Abstraction has 2305 states and 8815 transitions. [2020-10-21 23:10:08,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:10:08,579 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 8815 transitions. [2020-10-21 23:10:08,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 23:10:08,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:08,582 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:08,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:10:08,798 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 23:10:08,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:08,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1935931741, now seen corresponding path program 1 times [2020-10-21 23:10:08,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:08,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205484827] [2020-10-21 23:10:08,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:08,840 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 23:10:08,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205484827] [2020-10-21 23:10:08,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327425317] [2020-10-21 23:10:08,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:10:08,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:08,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-21 23:10:08,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:10:08,974 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 23:10:08,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:10:08,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-21 23:10:08,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565512522] [2020-10-21 23:10:08,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:10:08,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:08,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:10:08,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:10:08,976 INFO L87 Difference]: Start difference. First operand 2305 states and 8815 transitions. Second operand 9 states. [2020-10-21 23:10:09,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:09,230 INFO L93 Difference]: Finished difference Result 4942 states and 16410 transitions. [2020-10-21 23:10:09,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:10:09,231 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-10-21 23:10:09,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:09,248 INFO L225 Difference]: With dead ends: 4942 [2020-10-21 23:10:09,248 INFO L226 Difference]: Without dead ends: 4925 [2020-10-21 23:10:09,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-21 23:10:09,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4925 states. [2020-10-21 23:10:09,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4925 to 2299. [2020-10-21 23:10:09,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2299 states. [2020-10-21 23:10:09,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 8782 transitions. [2020-10-21 23:10:09,357 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 8782 transitions. Word has length 19 [2020-10-21 23:10:09,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:09,357 INFO L481 AbstractCegarLoop]: Abstraction has 2299 states and 8782 transitions. [2020-10-21 23:10:09,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:10:09,357 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 8782 transitions. [2020-10-21 23:10:09,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 23:10:09,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:09,359 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:09,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:10:09,575 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 23:10:09,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:09,575 INFO L82 PathProgramCache]: Analyzing trace with hash -2037741461, now seen corresponding path program 2 times [2020-10-21 23:10:09,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:09,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973700174] [2020-10-21 23:10:09,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:09,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:09,625 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:10:09,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973700174] [2020-10-21 23:10:09,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:10:09,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:10:09,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622122839] [2020-10-21 23:10:09,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:10:09,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:09,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:10:09,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:10:09,627 INFO L87 Difference]: Start difference. First operand 2299 states and 8782 transitions. Second operand 7 states. [2020-10-21 23:10:09,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:09,852 INFO L93 Difference]: Finished difference Result 4934 states and 16393 transitions. [2020-10-21 23:10:09,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:10:09,852 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-21 23:10:09,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:09,871 INFO L225 Difference]: With dead ends: 4934 [2020-10-21 23:10:09,871 INFO L226 Difference]: Without dead ends: 4917 [2020-10-21 23:10:09,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-21 23:10:09,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4917 states. [2020-10-21 23:10:09,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4917 to 2216. [2020-10-21 23:10:09,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2216 states. [2020-10-21 23:10:09,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 8477 transitions. [2020-10-21 23:10:09,970 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 8477 transitions. Word has length 19 [2020-10-21 23:10:09,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:09,970 INFO L481 AbstractCegarLoop]: Abstraction has 2216 states and 8477 transitions. [2020-10-21 23:10:09,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:10:09,970 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 8477 transitions. [2020-10-21 23:10:09,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 23:10:09,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:09,972 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:09,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-21 23:10:09,973 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 23:10:09,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:09,973 INFO L82 PathProgramCache]: Analyzing trace with hash -2037725899, now seen corresponding path program 2 times [2020-10-21 23:10:09,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:09,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664292688] [2020-10-21 23:10:09,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:09,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:10,016 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:10:10,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664292688] [2020-10-21 23:10:10,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:10:10,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:10:10,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440282092] [2020-10-21 23:10:10,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:10:10,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:10,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:10:10,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:10:10,018 INFO L87 Difference]: Start difference. First operand 2216 states and 8477 transitions. Second operand 7 states. [2020-10-21 23:10:10,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:10,248 INFO L93 Difference]: Finished difference Result 4774 states and 15828 transitions. [2020-10-21 23:10:10,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:10:10,248 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-21 23:10:10,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:10,262 INFO L225 Difference]: With dead ends: 4774 [2020-10-21 23:10:10,263 INFO L226 Difference]: Without dead ends: 4757 [2020-10-21 23:10:10,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-21 23:10:10,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2020-10-21 23:10:10,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 2150. [2020-10-21 23:10:10,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2150 states. [2020-10-21 23:10:10,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 8243 transitions. [2020-10-21 23:10:10,437 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 8243 transitions. Word has length 19 [2020-10-21 23:10:10,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:10,437 INFO L481 AbstractCegarLoop]: Abstraction has 2150 states and 8243 transitions. [2020-10-21 23:10:10,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:10:10,437 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 8243 transitions. [2020-10-21 23:10:10,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:10:10,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:10,439 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:10,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-21 23:10:10,440 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 23:10:10,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:10,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1787566869, now seen corresponding path program 1 times [2020-10-21 23:10:10,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:10,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757108054] [2020-10-21 23:10:10,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:10,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:10,510 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:10:10,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757108054] [2020-10-21 23:10:10,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992224327] [2020-10-21 23:10:10,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:10:10,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:10,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 23:10:10,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:10:10,628 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:10:10,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:10:10,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 23:10:10,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189104495] [2020-10-21 23:10:10,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 23:10:10,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:10,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 23:10:10,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 23:10:10,630 INFO L87 Difference]: Start difference. First operand 2150 states and 8243 transitions. Second operand 11 states. [2020-10-21 23:10:11,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:11,173 INFO L93 Difference]: Finished difference Result 6025 states and 18746 transitions. [2020-10-21 23:10:11,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:10:11,173 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-21 23:10:11,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:11,189 INFO L225 Difference]: With dead ends: 6025 [2020-10-21 23:10:11,189 INFO L226 Difference]: Without dead ends: 6017 [2020-10-21 23:10:11,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 23:10:11,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6017 states. [2020-10-21 23:10:11,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6017 to 2117. [2020-10-21 23:10:11,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2117 states. [2020-10-21 23:10:11,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 8106 transitions. [2020-10-21 23:10:11,297 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 8106 transitions. Word has length 21 [2020-10-21 23:10:11,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:11,298 INFO L481 AbstractCegarLoop]: Abstraction has 2117 states and 8106 transitions. [2020-10-21 23:10:11,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 23:10:11,298 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 8106 transitions. [2020-10-21 23:10:11,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:10:11,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:11,300 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:11,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-21 23:10:11,515 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 23:10:11,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:11,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1186960285, now seen corresponding path program 2 times [2020-10-21 23:10:11,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:11,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529790058] [2020-10-21 23:10:11,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:11,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:11,574 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 23:10:11,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529790058] [2020-10-21 23:10:11,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709313491] [2020-10-21 23:10:11,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:10:11,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 23:10:11,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:10:11,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 23:10:11,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:10:11,712 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 23:10:11,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:10:11,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 23:10:11,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027338310] [2020-10-21 23:10:11,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 23:10:11,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:11,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 23:10:11,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 23:10:11,714 INFO L87 Difference]: Start difference. First operand 2117 states and 8106 transitions. Second operand 11 states. [2020-10-21 23:10:12,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:12,263 INFO L93 Difference]: Finished difference Result 5914 states and 18384 transitions. [2020-10-21 23:10:12,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:10:12,264 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-21 23:10:12,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:12,274 INFO L225 Difference]: With dead ends: 5914 [2020-10-21 23:10:12,274 INFO L226 Difference]: Without dead ends: 5903 [2020-10-21 23:10:12,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 23:10:12,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5903 states. [2020-10-21 23:10:12,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5903 to 2085. [2020-10-21 23:10:12,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2085 states. [2020-10-21 23:10:12,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 7975 transitions. [2020-10-21 23:10:12,461 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 7975 transitions. Word has length 21 [2020-10-21 23:10:12,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:12,462 INFO L481 AbstractCegarLoop]: Abstraction has 2085 states and 7975 transitions. [2020-10-21 23:10:12,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 23:10:12,462 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 7975 transitions. [2020-10-21 23:10:12,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:10:12,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:12,464 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:12,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:10:12,677 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 23:10:12,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:12,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1258711819, now seen corresponding path program 3 times [2020-10-21 23:10:12,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:12,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363562277] [2020-10-21 23:10:12,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:12,770 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 23:10:12,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363562277] [2020-10-21 23:10:12,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916746106] [2020-10-21 23:10:12,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:10:12,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-21 23:10:12,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:10:12,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 23:10:12,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:10:12,871 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 23:10:12,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:10:12,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 23:10:12,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139860820] [2020-10-21 23:10:12,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 23:10:12,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:12,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 23:10:12,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 23:10:12,875 INFO L87 Difference]: Start difference. First operand 2085 states and 7975 transitions. Second operand 11 states. [2020-10-21 23:10:13,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:13,389 INFO L93 Difference]: Finished difference Result 5907 states and 18375 transitions. [2020-10-21 23:10:13,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:10:13,389 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-21 23:10:13,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:13,397 INFO L225 Difference]: With dead ends: 5907 [2020-10-21 23:10:13,398 INFO L226 Difference]: Without dead ends: 5899 [2020-10-21 23:10:13,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 23:10:13,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5899 states. [2020-10-21 23:10:13,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5899 to 2008. [2020-10-21 23:10:13,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2008 states. [2020-10-21 23:10:13,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 7698 transitions. [2020-10-21 23:10:13,489 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 7698 transitions. Word has length 21 [2020-10-21 23:10:13,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:13,490 INFO L481 AbstractCegarLoop]: Abstraction has 2008 states and 7698 transitions. [2020-10-21 23:10:13,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 23:10:13,490 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 7698 transitions. [2020-10-21 23:10:13,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:10:13,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:13,491 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:13,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-10-21 23:10:13,704 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 23:10:13,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:13,705 INFO L82 PathProgramCache]: Analyzing trace with hash 709551919, now seen corresponding path program 4 times [2020-10-21 23:10:13,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:13,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267366909] [2020-10-21 23:10:13,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:13,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:13,759 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 23:10:13,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267366909] [2020-10-21 23:10:13,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099616772] [2020-10-21 23:10:13,760 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:10:13,839 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 23:10:13,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:10:13,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 23:10:13,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:10:13,864 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 23:10:13,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:10:13,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 23:10:13,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139212691] [2020-10-21 23:10:13,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 23:10:13,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:13,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 23:10:13,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 23:10:13,866 INFO L87 Difference]: Start difference. First operand 2008 states and 7698 transitions. Second operand 11 states. [2020-10-21 23:10:14,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:14,403 INFO L93 Difference]: Finished difference Result 5835 states and 18155 transitions. [2020-10-21 23:10:14,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:10:14,403 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-21 23:10:14,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:14,412 INFO L225 Difference]: With dead ends: 5835 [2020-10-21 23:10:14,412 INFO L226 Difference]: Without dead ends: 5824 [2020-10-21 23:10:14,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 23:10:14,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5824 states. [2020-10-21 23:10:14,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5824 to 1976. [2020-10-21 23:10:14,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1976 states. [2020-10-21 23:10:14,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 7567 transitions. [2020-10-21 23:10:14,564 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 7567 transitions. Word has length 21 [2020-10-21 23:10:14,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:14,565 INFO L481 AbstractCegarLoop]: Abstraction has 1976 states and 7567 transitions. [2020-10-21 23:10:14,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 23:10:14,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 7567 transitions. [2020-10-21 23:10:14,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:10:14,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:14,577 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:14,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-21 23:10:14,788 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 23:10:14,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:14,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1112329447, now seen corresponding path program 1 times [2020-10-21 23:10:14,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:14,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040882376] [2020-10-21 23:10:14,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:14,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:14,824 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 23:10:14,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040882376] [2020-10-21 23:10:14,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:10:14,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:10:14,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221336259] [2020-10-21 23:10:14,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:10:14,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:14,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:10:14,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:10:14,825 INFO L87 Difference]: Start difference. First operand 1976 states and 7567 transitions. Second operand 5 states. [2020-10-21 23:10:14,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:14,894 INFO L93 Difference]: Finished difference Result 3016 states and 10840 transitions. [2020-10-21 23:10:14,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:10:14,894 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-21 23:10:14,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:14,900 INFO L225 Difference]: With dead ends: 3016 [2020-10-21 23:10:14,901 INFO L226 Difference]: Without dead ends: 3000 [2020-10-21 23:10:14,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:10:14,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2020-10-21 23:10:14,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 2183. [2020-10-21 23:10:14,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2183 states. [2020-10-21 23:10:14,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2183 states to 2183 states and 8210 transitions. [2020-10-21 23:10:14,960 INFO L78 Accepts]: Start accepts. Automaton has 2183 states and 8210 transitions. Word has length 21 [2020-10-21 23:10:14,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:14,960 INFO L481 AbstractCegarLoop]: Abstraction has 2183 states and 8210 transitions. [2020-10-21 23:10:14,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:10:14,961 INFO L276 IsEmpty]: Start isEmpty. Operand 2183 states and 8210 transitions. [2020-10-21 23:10:14,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:10:14,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:14,962 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:14,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-21 23:10:14,963 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 23:10:14,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:14,963 INFO L82 PathProgramCache]: Analyzing trace with hash 235546503, now seen corresponding path program 5 times [2020-10-21 23:10:14,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:14,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507821823] [2020-10-21 23:10:14,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:14,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:15,013 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:10:15,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507821823] [2020-10-21 23:10:15,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:10:15,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:10:15,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391504936] [2020-10-21 23:10:15,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:10:15,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:15,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:10:15,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:10:15,015 INFO L87 Difference]: Start difference. First operand 2183 states and 8210 transitions. Second operand 9 states. [2020-10-21 23:10:15,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:15,517 INFO L93 Difference]: Finished difference Result 6150 states and 19247 transitions. [2020-10-21 23:10:15,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:10:15,518 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 23:10:15,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:15,533 INFO L225 Difference]: With dead ends: 6150 [2020-10-21 23:10:15,533 INFO L226 Difference]: Without dead ends: 6139 [2020-10-21 23:10:15,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 23:10:15,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6139 states. [2020-10-21 23:10:15,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6139 to 2096. [2020-10-21 23:10:15,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2096 states. [2020-10-21 23:10:15,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2096 states to 2096 states and 7876 transitions. [2020-10-21 23:10:15,632 INFO L78 Accepts]: Start accepts. Automaton has 2096 states and 7876 transitions. Word has length 21 [2020-10-21 23:10:15,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:15,633 INFO L481 AbstractCegarLoop]: Abstraction has 2096 states and 7876 transitions. [2020-10-21 23:10:15,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:10:15,633 INFO L276 IsEmpty]: Start isEmpty. Operand 2096 states and 7876 transitions. [2020-10-21 23:10:15,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:10:15,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:15,634 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:15,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-21 23:10:15,635 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 23:10:15,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:15,635 INFO L82 PathProgramCache]: Analyzing trace with hash 250486023, now seen corresponding path program 6 times [2020-10-21 23:10:15,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:15,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786045944] [2020-10-21 23:10:15,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:15,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:15,696 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:10:15,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786045944] [2020-10-21 23:10:15,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:10:15,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:10:15,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419132401] [2020-10-21 23:10:15,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:10:15,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:15,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:10:15,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:10:15,698 INFO L87 Difference]: Start difference. First operand 2096 states and 7876 transitions. Second operand 9 states. [2020-10-21 23:10:16,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:16,250 INFO L93 Difference]: Finished difference Result 6017 states and 18791 transitions. [2020-10-21 23:10:16,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:10:16,252 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 23:10:16,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:16,265 INFO L225 Difference]: With dead ends: 6017 [2020-10-21 23:10:16,265 INFO L226 Difference]: Without dead ends: 6002 [2020-10-21 23:10:16,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 23:10:16,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6002 states. [2020-10-21 23:10:16,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6002 to 1965. [2020-10-21 23:10:16,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2020-10-21 23:10:16,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 7429 transitions. [2020-10-21 23:10:16,355 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 7429 transitions. Word has length 21 [2020-10-21 23:10:16,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:16,355 INFO L481 AbstractCegarLoop]: Abstraction has 1965 states and 7429 transitions. [2020-10-21 23:10:16,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:10:16,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 7429 transitions. [2020-10-21 23:10:16,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-21 23:10:16,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:16,358 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:16,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-21 23:10:16,358 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 23:10:16,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:16,358 INFO L82 PathProgramCache]: Analyzing trace with hash -128688571, now seen corresponding path program 1 times [2020-10-21 23:10:16,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:16,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605793390] [2020-10-21 23:10:16,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 23:10:16,369 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 23:10:16,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 23:10:16,376 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 23:10:16,384 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-21 23:10:16,385 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-21 23:10:16,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-21 23:10:16,386 WARN L371 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-21 23:10:16,386 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-21 23:10:16,399 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,399 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,399 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,399 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,400 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,400 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,400 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,400 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,400 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,400 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,400 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,401 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,401 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,401 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,401 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,401 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,401 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,401 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,402 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,402 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,402 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,402 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,402 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,402 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,402 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,402 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,403 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,403 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,403 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,403 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,403 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,403 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,403 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,404 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,404 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,404 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,404 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,404 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,404 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,404 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,405 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,405 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,405 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,405 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,405 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,405 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,406 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,406 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,406 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,406 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,406 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,406 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,406 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,407 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,407 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,407 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,407 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,407 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,407 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,407 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,407 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,408 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,408 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,408 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,408 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,408 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,408 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,409 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,409 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,409 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,409 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,409 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,409 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,409 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,409 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,410 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,410 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,410 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,410 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,410 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,410 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,410 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,411 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,411 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,411 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,411 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,411 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,411 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,411 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,411 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,412 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,412 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,412 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,412 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,412 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,412 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,412 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,413 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,413 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,413 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,413 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,414 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,414 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,414 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,414 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,414 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,414 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,415 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,415 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,415 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,415 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,415 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,415 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,415 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,415 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,416 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,416 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,416 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,416 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,416 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,416 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,416 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,416 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,417 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,417 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,417 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,417 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,417 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,418 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,418 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,418 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,418 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,418 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,421 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,422 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,422 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,422 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,422 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,422 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,422 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,422 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,424 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,424 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,424 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,424 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,424 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,425 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,425 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,425 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,426 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,426 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,426 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,426 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,427 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,427 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,427 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,427 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,428 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,428 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,428 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,429 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,429 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,429 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,429 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,429 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,431 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,431 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,431 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,431 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,431 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,433 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,433 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,433 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,433 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,433 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,434 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,435 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,435 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,435 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,435 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,436 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,436 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,437 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,437 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,437 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,438 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,438 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,438 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,438 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,439 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:10:16,440 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 23:10:16,440 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-21 23:10:16,440 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 23:10:16,440 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 23:10:16,440 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-21 23:10:16,440 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 23:10:16,441 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 23:10:16,441 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 23:10:16,441 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 23:10:16,441 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 23:10:16,443 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-21 23:10:16,443 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 163 places, 152 transitions, 394 flow [2020-10-21 23:10:16,443 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 163 places, 152 transitions, 394 flow [2020-10-21 23:10:16,443 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 163 places, 152 transitions, 394 flow [2020-10-21 23:10:16,465 INFO L129 PetriNetUnfolder]: 8/158 cut-off events. [2020-10-21 23:10:16,465 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-21 23:10:16,467 INFO L80 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 158 events. 8/158 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 280 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 185. Up to 12 conditions per place. [2020-10-21 23:10:16,474 INFO L116 LiptonReduction]: Number of co-enabled transitions 3390 [2020-10-21 23:10:18,744 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2020-10-21 23:10:18,862 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-21 23:10:18,890 INFO L131 LiptonReduction]: Checked pairs total: 4983 [2020-10-21 23:10:18,890 INFO L133 LiptonReduction]: Total number of compositions: 164 [2020-10-21 23:10:18,891 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 39 transitions, 168 flow [2020-10-21 23:10:19,246 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6191 states. [2020-10-21 23:10:19,246 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states. [2020-10-21 23:10:19,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-21 23:10:19,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:19,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-21 23:10:19,247 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:19,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:19,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1289650, now seen corresponding path program 1 times [2020-10-21 23:10:19,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:19,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135506807] [2020-10-21 23:10:19,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:19,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:19,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:10:19,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135506807] [2020-10-21 23:10:19,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:10:19,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 23:10:19,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284566490] [2020-10-21 23:10:19,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 23:10:19,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:19,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 23:10:19,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:10:19,267 INFO L87 Difference]: Start difference. First operand 6191 states. Second operand 3 states. [2020-10-21 23:10:19,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:19,325 INFO L93 Difference]: Finished difference Result 5844 states and 26316 transitions. [2020-10-21 23:10:19,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 23:10:19,325 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-21 23:10:19,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:19,345 INFO L225 Difference]: With dead ends: 5844 [2020-10-21 23:10:19,345 INFO L226 Difference]: Without dead ends: 5479 [2020-10-21 23:10:19,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:10:19,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5479 states. [2020-10-21 23:10:19,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5479 to 5479. [2020-10-21 23:10:19,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5479 states. [2020-10-21 23:10:19,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5479 states to 5479 states and 24493 transitions. [2020-10-21 23:10:19,535 INFO L78 Accepts]: Start accepts. Automaton has 5479 states and 24493 transitions. Word has length 3 [2020-10-21 23:10:19,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:19,535 INFO L481 AbstractCegarLoop]: Abstraction has 5479 states and 24493 transitions. [2020-10-21 23:10:19,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 23:10:19,535 INFO L276 IsEmpty]: Start isEmpty. Operand 5479 states and 24493 transitions. [2020-10-21 23:10:19,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 23:10:19,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:19,535 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:19,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-21 23:10:19,536 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:19,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:19,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1325680319, now seen corresponding path program 1 times [2020-10-21 23:10:19,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:19,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679260178] [2020-10-21 23:10:19,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:19,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:19,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:10:19,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679260178] [2020-10-21 23:10:19,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:10:19,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:10:19,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446236332] [2020-10-21 23:10:19,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:10:19,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:19,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:10:19,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:10:19,571 INFO L87 Difference]: Start difference. First operand 5479 states and 24493 transitions. Second operand 5 states. [2020-10-21 23:10:19,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:19,695 INFO L93 Difference]: Finished difference Result 9673 states and 40333 transitions. [2020-10-21 23:10:19,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:10:19,696 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-21 23:10:19,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:19,735 INFO L225 Difference]: With dead ends: 9673 [2020-10-21 23:10:19,735 INFO L226 Difference]: Without dead ends: 9666 [2020-10-21 23:10:19,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:10:19,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9666 states. [2020-10-21 23:10:19,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9666 to 6331. [2020-10-21 23:10:19,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6331 states. [2020-10-21 23:10:19,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 28544 transitions. [2020-10-21 23:10:19,975 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 28544 transitions. Word has length 9 [2020-10-21 23:10:19,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:19,975 INFO L481 AbstractCegarLoop]: Abstraction has 6331 states and 28544 transitions. [2020-10-21 23:10:19,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:10:19,975 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 28544 transitions. [2020-10-21 23:10:19,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 23:10:19,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:19,976 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:19,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-21 23:10:19,976 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:19,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:19,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1083735800, now seen corresponding path program 1 times [2020-10-21 23:10:19,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:19,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516369764] [2020-10-21 23:10:19,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:19,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:20,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 23:10:20,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516369764] [2020-10-21 23:10:20,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:10:20,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:10:20,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913360228] [2020-10-21 23:10:20,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:10:20,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:20,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:10:20,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:10:20,021 INFO L87 Difference]: Start difference. First operand 6331 states and 28544 transitions. Second operand 5 states. [2020-10-21 23:10:20,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:20,133 INFO L93 Difference]: Finished difference Result 11081 states and 46826 transitions. [2020-10-21 23:10:20,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:10:20,134 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-21 23:10:20,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:20,159 INFO L225 Difference]: With dead ends: 11081 [2020-10-21 23:10:20,159 INFO L226 Difference]: Without dead ends: 11068 [2020-10-21 23:10:20,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:10:20,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11068 states. [2020-10-21 23:10:21,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11068 to 7391. [2020-10-21 23:10:21,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7391 states. [2020-10-21 23:10:21,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7391 states to 7391 states and 33694 transitions. [2020-10-21 23:10:21,069 INFO L78 Accepts]: Start accepts. Automaton has 7391 states and 33694 transitions. Word has length 13 [2020-10-21 23:10:21,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:21,070 INFO L481 AbstractCegarLoop]: Abstraction has 7391 states and 33694 transitions. [2020-10-21 23:10:21,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:10:21,070 INFO L276 IsEmpty]: Start isEmpty. Operand 7391 states and 33694 transitions. [2020-10-21 23:10:21,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 23:10:21,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:21,070 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:21,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-21 23:10:21,070 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:21,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:21,071 INFO L82 PathProgramCache]: Analyzing trace with hash 717119558, now seen corresponding path program 1 times [2020-10-21 23:10:21,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:21,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166428532] [2020-10-21 23:10:21,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:21,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:21,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:10:21,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166428532] [2020-10-21 23:10:21,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387066129] [2020-10-21 23:10:21,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:10:21,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:21,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-21 23:10:21,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:10:21,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:10:21,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:10:21,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-21 23:10:21,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332703677] [2020-10-21 23:10:21,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:10:21,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:21,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:10:21,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:10:21,209 INFO L87 Difference]: Start difference. First operand 7391 states and 33694 transitions. Second operand 9 states. [2020-10-21 23:10:21,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:21,515 INFO L93 Difference]: Finished difference Result 16749 states and 66010 transitions. [2020-10-21 23:10:21,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:10:21,516 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-10-21 23:10:21,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:21,557 INFO L225 Difference]: With dead ends: 16749 [2020-10-21 23:10:21,557 INFO L226 Difference]: Without dead ends: 16736 [2020-10-21 23:10:21,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-21 23:10:21,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16736 states. [2020-10-21 23:10:21,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16736 to 7303. [2020-10-21 23:10:21,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7303 states. [2020-10-21 23:10:21,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7303 states to 7303 states and 33260 transitions. [2020-10-21 23:10:21,848 INFO L78 Accepts]: Start accepts. Automaton has 7303 states and 33260 transitions. Word has length 15 [2020-10-21 23:10:21,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:21,848 INFO L481 AbstractCegarLoop]: Abstraction has 7303 states and 33260 transitions. [2020-10-21 23:10:21,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:10:21,848 INFO L276 IsEmpty]: Start isEmpty. Operand 7303 states and 33260 transitions. [2020-10-21 23:10:21,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 23:10:21,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:21,849 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:22,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:10:22,050 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:22,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:22,051 INFO L82 PathProgramCache]: Analyzing trace with hash 2088019334, now seen corresponding path program 2 times [2020-10-21 23:10:22,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:22,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42293335] [2020-10-21 23:10:22,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:22,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:22,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 23:10:22,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42293335] [2020-10-21 23:10:22,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:10:22,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:10:22,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979749587] [2020-10-21 23:10:22,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:10:22,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:22,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:10:22,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:10:22,087 INFO L87 Difference]: Start difference. First operand 7303 states and 33260 transitions. Second operand 7 states. [2020-10-21 23:10:22,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:22,355 INFO L93 Difference]: Finished difference Result 17085 states and 67393 transitions. [2020-10-21 23:10:22,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:10:22,356 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-21 23:10:22,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:22,395 INFO L225 Difference]: With dead ends: 17085 [2020-10-21 23:10:22,396 INFO L226 Difference]: Without dead ends: 17071 [2020-10-21 23:10:22,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-21 23:10:22,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17071 states. [2020-10-21 23:10:22,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17071 to 7048. [2020-10-21 23:10:22,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7048 states. [2020-10-21 23:10:22,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7048 states to 7048 states and 32136 transitions. [2020-10-21 23:10:22,821 INFO L78 Accepts]: Start accepts. Automaton has 7048 states and 32136 transitions. Word has length 15 [2020-10-21 23:10:22,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:22,821 INFO L481 AbstractCegarLoop]: Abstraction has 7048 states and 32136 transitions. [2020-10-21 23:10:22,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:10:22,821 INFO L276 IsEmpty]: Start isEmpty. Operand 7048 states and 32136 transitions. [2020-10-21 23:10:22,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-21 23:10:22,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:22,822 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:22,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-21 23:10:22,822 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:22,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:22,822 INFO L82 PathProgramCache]: Analyzing trace with hash -2132652047, now seen corresponding path program 1 times [2020-10-21 23:10:22,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:22,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947974153] [2020-10-21 23:10:22,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:22,845 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:10:22,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947974153] [2020-10-21 23:10:22,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:10:22,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:10:22,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826258911] [2020-10-21 23:10:22,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:10:22,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:22,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:10:22,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:10:22,847 INFO L87 Difference]: Start difference. First operand 7048 states and 32136 transitions. Second operand 5 states. [2020-10-21 23:10:22,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:22,967 INFO L93 Difference]: Finished difference Result 12234 states and 52488 transitions. [2020-10-21 23:10:22,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:10:22,968 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-21 23:10:22,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:22,996 INFO L225 Difference]: With dead ends: 12234 [2020-10-21 23:10:22,996 INFO L226 Difference]: Without dead ends: 12212 [2020-10-21 23:10:22,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:10:23,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12212 states. [2020-10-21 23:10:23,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12212 to 8342. [2020-10-21 23:10:23,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8342 states. [2020-10-21 23:10:23,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8342 states to 8342 states and 38278 transitions. [2020-10-21 23:10:23,240 INFO L78 Accepts]: Start accepts. Automaton has 8342 states and 38278 transitions. Word has length 17 [2020-10-21 23:10:23,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:23,240 INFO L481 AbstractCegarLoop]: Abstraction has 8342 states and 38278 transitions. [2020-10-21 23:10:23,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:10:23,240 INFO L276 IsEmpty]: Start isEmpty. Operand 8342 states and 38278 transitions. [2020-10-21 23:10:23,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 23:10:23,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:23,242 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:23,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-21 23:10:23,242 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:23,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:23,242 INFO L82 PathProgramCache]: Analyzing trace with hash 930798143, now seen corresponding path program 1 times [2020-10-21 23:10:23,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:23,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761258218] [2020-10-21 23:10:23,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:23,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:23,289 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-21 23:10:23,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761258218] [2020-10-21 23:10:23,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842629629] [2020-10-21 23:10:23,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:10:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:23,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-21 23:10:23,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:10:23,397 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-21 23:10:23,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:10:23,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-21 23:10:23,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264175768] [2020-10-21 23:10:23,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:10:23,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:23,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:10:23,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:10:23,402 INFO L87 Difference]: Start difference. First operand 8342 states and 38278 transitions. Second operand 9 states. [2020-10-21 23:10:23,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:23,697 INFO L93 Difference]: Finished difference Result 19016 states and 76191 transitions. [2020-10-21 23:10:23,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:10:23,698 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-10-21 23:10:23,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:23,739 INFO L225 Difference]: With dead ends: 19016 [2020-10-21 23:10:23,739 INFO L226 Difference]: Without dead ends: 18998 [2020-10-21 23:10:23,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-21 23:10:23,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18998 states. [2020-10-21 23:10:24,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18998 to 8452. [2020-10-21 23:10:24,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8452 states. [2020-10-21 23:10:24,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8452 states to 8452 states and 38704 transitions. [2020-10-21 23:10:24,208 INFO L78 Accepts]: Start accepts. Automaton has 8452 states and 38704 transitions. Word has length 19 [2020-10-21 23:10:24,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:24,208 INFO L481 AbstractCegarLoop]: Abstraction has 8452 states and 38704 transitions. [2020-10-21 23:10:24,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:10:24,209 INFO L276 IsEmpty]: Start isEmpty. Operand 8452 states and 38704 transitions. [2020-10-21 23:10:24,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 23:10:24,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:24,210 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:24,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-21 23:10:24,411 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:24,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:24,411 INFO L82 PathProgramCache]: Analyzing trace with hash -779215809, now seen corresponding path program 2 times [2020-10-21 23:10:24,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:24,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205164239] [2020-10-21 23:10:24,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:24,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:24,450 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:10:24,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205164239] [2020-10-21 23:10:24,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:10:24,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:10:24,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294079988] [2020-10-21 23:10:24,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:10:24,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:24,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:10:24,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:10:24,451 INFO L87 Difference]: Start difference. First operand 8452 states and 38704 transitions. Second operand 7 states. [2020-10-21 23:10:24,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:24,713 INFO L93 Difference]: Finished difference Result 19420 states and 77854 transitions. [2020-10-21 23:10:24,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:10:24,714 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-21 23:10:24,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:24,757 INFO L225 Difference]: With dead ends: 19420 [2020-10-21 23:10:24,758 INFO L226 Difference]: Without dead ends: 19395 [2020-10-21 23:10:24,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-21 23:10:24,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19395 states. [2020-10-21 23:10:25,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19395 to 8129. [2020-10-21 23:10:25,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8129 states. [2020-10-21 23:10:25,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8129 states to 8129 states and 37298 transitions. [2020-10-21 23:10:25,069 INFO L78 Accepts]: Start accepts. Automaton has 8129 states and 37298 transitions. Word has length 19 [2020-10-21 23:10:25,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:25,069 INFO L481 AbstractCegarLoop]: Abstraction has 8129 states and 37298 transitions. [2020-10-21 23:10:25,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:10:25,069 INFO L276 IsEmpty]: Start isEmpty. Operand 8129 states and 37298 transitions. [2020-10-21 23:10:25,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 23:10:25,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:25,070 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:25,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-21 23:10:25,071 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:25,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:25,071 INFO L82 PathProgramCache]: Analyzing trace with hash -779225047, now seen corresponding path program 1 times [2020-10-21 23:10:25,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:25,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748983135] [2020-10-21 23:10:25,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:25,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:25,119 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:10:25,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748983135] [2020-10-21 23:10:25,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:10:25,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:10:25,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890183699] [2020-10-21 23:10:25,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:10:25,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:25,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:10:25,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:10:25,121 INFO L87 Difference]: Start difference. First operand 8129 states and 37298 transitions. Second operand 7 states. [2020-10-21 23:10:25,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:25,398 INFO L93 Difference]: Finished difference Result 19373 states and 77785 transitions. [2020-10-21 23:10:25,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:10:25,399 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-21 23:10:25,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:25,442 INFO L225 Difference]: With dead ends: 19373 [2020-10-21 23:10:25,442 INFO L226 Difference]: Without dead ends: 19348 [2020-10-21 23:10:25,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-21 23:10:25,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19348 states. [2020-10-21 23:10:25,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19348 to 8375. [2020-10-21 23:10:25,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8375 states. [2020-10-21 23:10:25,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8375 states to 8375 states and 38394 transitions. [2020-10-21 23:10:25,910 INFO L78 Accepts]: Start accepts. Automaton has 8375 states and 38394 transitions. Word has length 19 [2020-10-21 23:10:25,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:25,910 INFO L481 AbstractCegarLoop]: Abstraction has 8375 states and 38394 transitions. [2020-10-21 23:10:25,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:10:25,910 INFO L276 IsEmpty]: Start isEmpty. Operand 8375 states and 38394 transitions. [2020-10-21 23:10:25,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 23:10:25,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:25,912 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:25,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-21 23:10:25,912 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:25,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:25,912 INFO L82 PathProgramCache]: Analyzing trace with hash -787409047, now seen corresponding path program 2 times [2020-10-21 23:10:25,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:25,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110319205] [2020-10-21 23:10:25,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:25,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:25,953 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:10:25,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110319205] [2020-10-21 23:10:25,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:10:25,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:10:25,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369419455] [2020-10-21 23:10:25,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:10:25,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:25,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:10:25,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:10:25,955 INFO L87 Difference]: Start difference. First operand 8375 states and 38394 transitions. Second operand 7 states. [2020-10-21 23:10:26,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:26,221 INFO L93 Difference]: Finished difference Result 19555 states and 78564 transitions. [2020-10-21 23:10:26,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:10:26,222 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-21 23:10:26,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:26,263 INFO L225 Difference]: With dead ends: 19555 [2020-10-21 23:10:26,263 INFO L226 Difference]: Without dead ends: 19530 [2020-10-21 23:10:26,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-21 23:10:26,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19530 states. [2020-10-21 23:10:26,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19530 to 8317. [2020-10-21 23:10:26,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8317 states. [2020-10-21 23:10:26,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8317 states to 8317 states and 38184 transitions. [2020-10-21 23:10:26,568 INFO L78 Accepts]: Start accepts. Automaton has 8317 states and 38184 transitions. Word has length 19 [2020-10-21 23:10:26,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:26,568 INFO L481 AbstractCegarLoop]: Abstraction has 8317 states and 38184 transitions. [2020-10-21 23:10:26,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:10:26,568 INFO L276 IsEmpty]: Start isEmpty. Operand 8317 states and 38184 transitions. [2020-10-21 23:10:26,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:10:26,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:26,569 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:26,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-21 23:10:26,569 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:26,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:26,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1143809783, now seen corresponding path program 1 times [2020-10-21 23:10:26,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:26,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145874681] [2020-10-21 23:10:26,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:26,614 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-21 23:10:26,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145874681] [2020-10-21 23:10:26,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083105805] [2020-10-21 23:10:26,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:10:26,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:26,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 23:10:26,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:10:26,741 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-21 23:10:26,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:10:26,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 23:10:26,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201703013] [2020-10-21 23:10:26,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 23:10:26,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:26,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 23:10:26,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 23:10:26,744 INFO L87 Difference]: Start difference. First operand 8317 states and 38184 transitions. Second operand 11 states. [2020-10-21 23:10:27,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:27,531 INFO L93 Difference]: Finished difference Result 26969 states and 101544 transitions. [2020-10-21 23:10:27,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:10:27,531 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-21 23:10:27,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:27,589 INFO L225 Difference]: With dead ends: 26969 [2020-10-21 23:10:27,589 INFO L226 Difference]: Without dead ends: 26957 [2020-10-21 23:10:27,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 23:10:27,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26957 states. [2020-10-21 23:10:28,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26957 to 8208. [2020-10-21 23:10:28,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8208 states. [2020-10-21 23:10:28,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8208 states to 8208 states and 37640 transitions. [2020-10-21 23:10:28,148 INFO L78 Accepts]: Start accepts. Automaton has 8208 states and 37640 transitions. Word has length 21 [2020-10-21 23:10:28,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:28,149 INFO L481 AbstractCegarLoop]: Abstraction has 8208 states and 37640 transitions. [2020-10-21 23:10:28,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 23:10:28,149 INFO L276 IsEmpty]: Start isEmpty. Operand 8208 states and 37640 transitions. [2020-10-21 23:10:28,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:10:28,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:28,150 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:28,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2020-10-21 23:10:28,351 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:28,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:28,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1135625783, now seen corresponding path program 2 times [2020-10-21 23:10:28,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:28,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893570081] [2020-10-21 23:10:28,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:28,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:28,403 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-21 23:10:28,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893570081] [2020-10-21 23:10:28,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985062993] [2020-10-21 23:10:28,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:10:28,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 23:10:28,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:10:28,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 23:10:28,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:10:28,522 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-21 23:10:28,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:10:28,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 23:10:28,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876152757] [2020-10-21 23:10:28,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 23:10:28,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:28,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 23:10:28,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 23:10:28,525 INFO L87 Difference]: Start difference. First operand 8208 states and 37640 transitions. Second operand 11 states. [2020-10-21 23:10:29,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:29,297 INFO L93 Difference]: Finished difference Result 26669 states and 100297 transitions. [2020-10-21 23:10:29,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:10:29,298 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-21 23:10:29,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:29,397 INFO L225 Difference]: With dead ends: 26669 [2020-10-21 23:10:29,397 INFO L226 Difference]: Without dead ends: 26653 [2020-10-21 23:10:29,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 23:10:29,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26653 states. [2020-10-21 23:10:29,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26653 to 8091. [2020-10-21 23:10:29,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8091 states. [2020-10-21 23:10:29,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8091 states to 8091 states and 37076 transitions. [2020-10-21 23:10:29,935 INFO L78 Accepts]: Start accepts. Automaton has 8091 states and 37076 transitions. Word has length 21 [2020-10-21 23:10:29,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:29,935 INFO L481 AbstractCegarLoop]: Abstraction has 8091 states and 37076 transitions. [2020-10-21 23:10:29,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 23:10:29,935 INFO L276 IsEmpty]: Start isEmpty. Operand 8091 states and 37076 transitions. [2020-10-21 23:10:29,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:10:29,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:29,936 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:30,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:10:30,137 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:30,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:30,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1502091017, now seen corresponding path program 3 times [2020-10-21 23:10:30,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:30,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736841914] [2020-10-21 23:10:30,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:30,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:30,191 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:10:30,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736841914] [2020-10-21 23:10:30,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:10:30,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:10:30,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025964371] [2020-10-21 23:10:30,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:10:30,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:30,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:10:30,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:10:30,193 INFO L87 Difference]: Start difference. First operand 8091 states and 37076 transitions. Second operand 9 states. [2020-10-21 23:10:30,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:30,895 INFO L93 Difference]: Finished difference Result 26678 states and 100382 transitions. [2020-10-21 23:10:30,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:10:30,895 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 23:10:30,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:30,974 INFO L225 Difference]: With dead ends: 26678 [2020-10-21 23:10:30,974 INFO L226 Difference]: Without dead ends: 26666 [2020-10-21 23:10:30,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 23:10:31,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26666 states. [2020-10-21 23:10:31,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26666 to 7869. [2020-10-21 23:10:31,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7869 states. [2020-10-21 23:10:31,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7869 states to 7869 states and 36086 transitions. [2020-10-21 23:10:31,529 INFO L78 Accepts]: Start accepts. Automaton has 7869 states and 36086 transitions. Word has length 21 [2020-10-21 23:10:31,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:31,529 INFO L481 AbstractCegarLoop]: Abstraction has 7869 states and 36086 transitions. [2020-10-21 23:10:31,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:10:31,530 INFO L276 IsEmpty]: Start isEmpty. Operand 7869 states and 36086 transitions. [2020-10-21 23:10:31,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:10:31,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:31,531 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:31,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-21 23:10:31,531 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:31,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:31,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1510959497, now seen corresponding path program 4 times [2020-10-21 23:10:31,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:31,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36393453] [2020-10-21 23:10:31,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:31,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:31,595 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:10:31,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36393453] [2020-10-21 23:10:31,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:10:31,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:10:31,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725345782] [2020-10-21 23:10:31,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:10:31,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:31,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:10:31,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:10:31,597 INFO L87 Difference]: Start difference. First operand 7869 states and 36086 transitions. Second operand 9 states. [2020-10-21 23:10:32,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:32,182 INFO L93 Difference]: Finished difference Result 26497 states and 99670 transitions. [2020-10-21 23:10:32,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:10:32,182 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 23:10:32,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:32,251 INFO L225 Difference]: With dead ends: 26497 [2020-10-21 23:10:32,251 INFO L226 Difference]: Without dead ends: 26481 [2020-10-21 23:10:32,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 23:10:32,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26481 states. [2020-10-21 23:10:32,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26481 to 7756. [2020-10-21 23:10:32,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7756 states. [2020-10-21 23:10:32,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7756 states to 7756 states and 35534 transitions. [2020-10-21 23:10:32,630 INFO L78 Accepts]: Start accepts. Automaton has 7756 states and 35534 transitions. Word has length 21 [2020-10-21 23:10:32,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:32,630 INFO L481 AbstractCegarLoop]: Abstraction has 7756 states and 35534 transitions. [2020-10-21 23:10:32,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:10:32,630 INFO L276 IsEmpty]: Start isEmpty. Operand 7756 states and 35534 transitions. [2020-10-21 23:10:32,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:10:32,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:32,632 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:32,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-21 23:10:32,632 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:32,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:32,632 INFO L82 PathProgramCache]: Analyzing trace with hash 540308572, now seen corresponding path program 1 times [2020-10-21 23:10:32,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:32,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986806826] [2020-10-21 23:10:32,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:32,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:32,655 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 23:10:32,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986806826] [2020-10-21 23:10:32,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:10:32,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:10:32,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312794070] [2020-10-21 23:10:32,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:10:32,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:32,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:10:32,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:10:32,656 INFO L87 Difference]: Start difference. First operand 7756 states and 35534 transitions. Second operand 5 states. [2020-10-21 23:10:32,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:32,789 INFO L93 Difference]: Finished difference Result 13259 states and 57521 transitions. [2020-10-21 23:10:32,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:10:32,790 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-21 23:10:32,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:32,820 INFO L225 Difference]: With dead ends: 13259 [2020-10-21 23:10:32,820 INFO L226 Difference]: Without dead ends: 13228 [2020-10-21 23:10:32,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:10:32,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13228 states. [2020-10-21 23:10:33,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13228 to 9263. [2020-10-21 23:10:33,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9263 states. [2020-10-21 23:10:33,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9263 states to 9263 states and 42388 transitions. [2020-10-21 23:10:33,090 INFO L78 Accepts]: Start accepts. Automaton has 9263 states and 42388 transitions. Word has length 21 [2020-10-21 23:10:33,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:33,090 INFO L481 AbstractCegarLoop]: Abstraction has 9263 states and 42388 transitions. [2020-10-21 23:10:33,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:10:33,090 INFO L276 IsEmpty]: Start isEmpty. Operand 9263 states and 42388 transitions. [2020-10-21 23:10:33,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:10:33,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:33,092 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:33,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-21 23:10:33,092 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:33,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:33,092 INFO L82 PathProgramCache]: Analyzing trace with hash -785848905, now seen corresponding path program 5 times [2020-10-21 23:10:33,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:33,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197175866] [2020-10-21 23:10:33,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:33,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:33,145 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:10:33,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197175866] [2020-10-21 23:10:33,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:10:33,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:10:33,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740903941] [2020-10-21 23:10:33,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:10:33,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:33,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:10:33,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:10:33,147 INFO L87 Difference]: Start difference. First operand 9263 states and 42388 transitions. Second operand 9 states. [2020-10-21 23:10:33,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:33,912 INFO L93 Difference]: Finished difference Result 29796 states and 113861 transitions. [2020-10-21 23:10:33,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:10:33,913 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 23:10:33,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:33,975 INFO L225 Difference]: With dead ends: 29796 [2020-10-21 23:10:33,975 INFO L226 Difference]: Without dead ends: 29778 [2020-10-21 23:10:33,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 23:10:34,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29778 states. [2020-10-21 23:10:34,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29778 to 8972. [2020-10-21 23:10:34,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8972 states. [2020-10-21 23:10:34,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8972 states to 8972 states and 41051 transitions. [2020-10-21 23:10:34,405 INFO L78 Accepts]: Start accepts. Automaton has 8972 states and 41051 transitions. Word has length 21 [2020-10-21 23:10:34,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:34,406 INFO L481 AbstractCegarLoop]: Abstraction has 8972 states and 41051 transitions. [2020-10-21 23:10:34,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:10:34,406 INFO L276 IsEmpty]: Start isEmpty. Operand 8972 states and 41051 transitions. [2020-10-21 23:10:34,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:10:34,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:34,407 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:34,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-21 23:10:34,407 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:34,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:34,408 INFO L82 PathProgramCache]: Analyzing trace with hash -785164425, now seen corresponding path program 6 times [2020-10-21 23:10:34,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:34,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201911818] [2020-10-21 23:10:34,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:34,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:34,459 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:10:34,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201911818] [2020-10-21 23:10:34,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:10:34,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:10:34,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445234616] [2020-10-21 23:10:34,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:10:34,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:34,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:10:34,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:10:34,461 INFO L87 Difference]: Start difference. First operand 8972 states and 41051 transitions. Second operand 9 states. [2020-10-21 23:10:35,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:35,405 INFO L93 Difference]: Finished difference Result 29387 states and 112119 transitions. [2020-10-21 23:10:35,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:10:35,405 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 23:10:35,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:35,501 INFO L225 Difference]: With dead ends: 29387 [2020-10-21 23:10:35,501 INFO L226 Difference]: Without dead ends: 29364 [2020-10-21 23:10:35,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 23:10:35,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29364 states. [2020-10-21 23:10:35,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29364 to 8573. [2020-10-21 23:10:35,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8573 states. [2020-10-21 23:10:35,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8573 states to 8573 states and 39353 transitions. [2020-10-21 23:10:35,976 INFO L78 Accepts]: Start accepts. Automaton has 8573 states and 39353 transitions. Word has length 21 [2020-10-21 23:10:35,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:35,976 INFO L481 AbstractCegarLoop]: Abstraction has 8573 states and 39353 transitions. [2020-10-21 23:10:35,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:10:35,976 INFO L276 IsEmpty]: Start isEmpty. Operand 8573 states and 39353 transitions. [2020-10-21 23:10:35,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 23:10:35,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:35,978 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:35,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-21 23:10:35,978 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:35,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:35,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1740842922, now seen corresponding path program 1 times [2020-10-21 23:10:35,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:35,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139748507] [2020-10-21 23:10:35,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:35,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:36,015 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-21 23:10:36,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139748507] [2020-10-21 23:10:36,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902630025] [2020-10-21 23:10:36,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:10:36,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:36,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-21 23:10:36,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:10:36,123 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-21 23:10:36,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:10:36,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-21 23:10:36,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298879122] [2020-10-21 23:10:36,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:10:36,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:36,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:10:36,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:10:36,125 INFO L87 Difference]: Start difference. First operand 8573 states and 39353 transitions. Second operand 9 states. [2020-10-21 23:10:36,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:36,460 INFO L93 Difference]: Finished difference Result 19727 states and 80274 transitions. [2020-10-21 23:10:36,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:10:36,461 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-21 23:10:36,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:36,506 INFO L225 Difference]: With dead ends: 19727 [2020-10-21 23:10:36,507 INFO L226 Difference]: Without dead ends: 19703 [2020-10-21 23:10:36,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-21 23:10:36,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19703 states. [2020-10-21 23:10:36,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19703 to 8847. [2020-10-21 23:10:36,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8847 states. [2020-10-21 23:10:36,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8847 states to 8847 states and 40495 transitions. [2020-10-21 23:10:36,973 INFO L78 Accepts]: Start accepts. Automaton has 8847 states and 40495 transitions. Word has length 23 [2020-10-21 23:10:36,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:36,974 INFO L481 AbstractCegarLoop]: Abstraction has 8847 states and 40495 transitions. [2020-10-21 23:10:36,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:10:36,974 INFO L276 IsEmpty]: Start isEmpty. Operand 8847 states and 40495 transitions. [2020-10-21 23:10:36,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 23:10:36,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:36,976 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:37,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-10-21 23:10:37,185 INFO L429 AbstractCegarLoop]: === Iteration 19 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:37,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:37,186 INFO L82 PathProgramCache]: Analyzing trace with hash -2019219285, now seen corresponding path program 1 times [2020-10-21 23:10:37,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:37,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388732142] [2020-10-21 23:10:37,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:37,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:37,227 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:10:37,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388732142] [2020-10-21 23:10:37,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357905425] [2020-10-21 23:10:37,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:10:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:37,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-21 23:10:37,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:10:37,362 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:10:37,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:10:37,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-21 23:10:37,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959442256] [2020-10-21 23:10:37,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:10:37,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:37,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:10:37,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:10:37,363 INFO L87 Difference]: Start difference. First operand 8847 states and 40495 transitions. Second operand 9 states. [2020-10-21 23:10:37,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:37,671 INFO L93 Difference]: Finished difference Result 20670 states and 84217 transitions. [2020-10-21 23:10:37,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:10:37,671 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-21 23:10:37,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:37,718 INFO L225 Difference]: With dead ends: 20670 [2020-10-21 23:10:37,718 INFO L226 Difference]: Without dead ends: 20642 [2020-10-21 23:10:37,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-21 23:10:37,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20642 states. [2020-10-21 23:10:38,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20642 to 9111. [2020-10-21 23:10:38,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9111 states. [2020-10-21 23:10:38,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9111 states to 9111 states and 41667 transitions. [2020-10-21 23:10:38,053 INFO L78 Accepts]: Start accepts. Automaton has 9111 states and 41667 transitions. Word has length 23 [2020-10-21 23:10:38,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:38,053 INFO L481 AbstractCegarLoop]: Abstraction has 9111 states and 41667 transitions. [2020-10-21 23:10:38,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:10:38,053 INFO L276 IsEmpty]: Start isEmpty. Operand 9111 states and 41667 transitions. [2020-10-21 23:10:38,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 23:10:38,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:38,055 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:38,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:10:38,256 INFO L429 AbstractCegarLoop]: === Iteration 20 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:38,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:38,257 INFO L82 PathProgramCache]: Analyzing trace with hash -2015481372, now seen corresponding path program 1 times [2020-10-21 23:10:38,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:38,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259748986] [2020-10-21 23:10:38,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:38,290 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-21 23:10:38,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259748986] [2020-10-21 23:10:38,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195801523] [2020-10-21 23:10:38,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:10:38,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:38,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-21 23:10:38,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:10:38,395 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-21 23:10:38,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:10:38,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-21 23:10:38,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832414682] [2020-10-21 23:10:38,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:10:38,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:38,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:10:38,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:10:38,396 INFO L87 Difference]: Start difference. First operand 9111 states and 41667 transitions. Second operand 9 states. [2020-10-21 23:10:38,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:38,710 INFO L93 Difference]: Finished difference Result 21416 states and 87392 transitions. [2020-10-21 23:10:38,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:10:38,710 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-21 23:10:38,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:38,759 INFO L225 Difference]: With dead ends: 21416 [2020-10-21 23:10:38,759 INFO L226 Difference]: Without dead ends: 21379 [2020-10-21 23:10:38,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-21 23:10:38,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21379 states. [2020-10-21 23:10:39,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21379 to 9320. [2020-10-21 23:10:39,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9320 states. [2020-10-21 23:10:39,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9320 states to 9320 states and 42648 transitions. [2020-10-21 23:10:39,104 INFO L78 Accepts]: Start accepts. Automaton has 9320 states and 42648 transitions. Word has length 23 [2020-10-21 23:10:39,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:39,104 INFO L481 AbstractCegarLoop]: Abstraction has 9320 states and 42648 transitions. [2020-10-21 23:10:39,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:10:39,104 INFO L276 IsEmpty]: Start isEmpty. Operand 9320 states and 42648 transitions. [2020-10-21 23:10:39,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 23:10:39,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:39,107 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:39,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:10:39,322 INFO L429 AbstractCegarLoop]: === Iteration 21 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:39,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:39,322 INFO L82 PathProgramCache]: Analyzing trace with hash -454504671, now seen corresponding path program 2 times [2020-10-21 23:10:39,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:39,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000014225] [2020-10-21 23:10:39,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:39,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:39,355 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 23:10:39,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000014225] [2020-10-21 23:10:39,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:10:39,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:10:39,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339965828] [2020-10-21 23:10:39,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:10:39,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:39,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:10:39,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:10:39,358 INFO L87 Difference]: Start difference. First operand 9320 states and 42648 transitions. Second operand 7 states. [2020-10-21 23:10:39,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:39,648 INFO L93 Difference]: Finished difference Result 21469 states and 87720 transitions. [2020-10-21 23:10:39,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:10:39,649 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-21 23:10:39,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:39,696 INFO L225 Difference]: With dead ends: 21469 [2020-10-21 23:10:39,696 INFO L226 Difference]: Without dead ends: 21432 [2020-10-21 23:10:39,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-21 23:10:39,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21432 states. [2020-10-21 23:10:40,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21432 to 9401. [2020-10-21 23:10:40,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9401 states. [2020-10-21 23:10:40,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9401 states to 9401 states and 43010 transitions. [2020-10-21 23:10:40,203 INFO L78 Accepts]: Start accepts. Automaton has 9401 states and 43010 transitions. Word has length 23 [2020-10-21 23:10:40,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:40,203 INFO L481 AbstractCegarLoop]: Abstraction has 9401 states and 43010 transitions. [2020-10-21 23:10:40,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:10:40,203 INFO L276 IsEmpty]: Start isEmpty. Operand 9401 states and 43010 transitions. [2020-10-21 23:10:40,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 23:10:40,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:40,205 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:40,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-21 23:10:40,205 INFO L429 AbstractCegarLoop]: === Iteration 22 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:40,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:40,206 INFO L82 PathProgramCache]: Analyzing trace with hash -454503958, now seen corresponding path program 2 times [2020-10-21 23:10:40,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:40,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413250288] [2020-10-21 23:10:40,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:40,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:40,241 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 23:10:40,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413250288] [2020-10-21 23:10:40,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:10:40,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:10:40,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225185754] [2020-10-21 23:10:40,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:10:40,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:40,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:10:40,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:10:40,243 INFO L87 Difference]: Start difference. First operand 9401 states and 43010 transitions. Second operand 7 states. [2020-10-21 23:10:40,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:40,527 INFO L93 Difference]: Finished difference Result 21218 states and 86469 transitions. [2020-10-21 23:10:40,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:10:40,527 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-21 23:10:40,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:40,590 INFO L225 Difference]: With dead ends: 21218 [2020-10-21 23:10:40,591 INFO L226 Difference]: Without dead ends: 21181 [2020-10-21 23:10:40,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-21 23:10:40,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21181 states. [2020-10-21 23:10:40,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21181 to 9396. [2020-10-21 23:10:40,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9396 states. [2020-10-21 23:10:40,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9396 states to 9396 states and 42985 transitions. [2020-10-21 23:10:40,946 INFO L78 Accepts]: Start accepts. Automaton has 9396 states and 42985 transitions. Word has length 23 [2020-10-21 23:10:40,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:40,946 INFO L481 AbstractCegarLoop]: Abstraction has 9396 states and 42985 transitions. [2020-10-21 23:10:40,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:10:40,946 INFO L276 IsEmpty]: Start isEmpty. Operand 9396 states and 42985 transitions. [2020-10-21 23:10:40,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 23:10:40,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:40,948 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:40,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-21 23:10:40,948 INFO L429 AbstractCegarLoop]: === Iteration 23 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:40,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:40,949 INFO L82 PathProgramCache]: Analyzing trace with hash -454513196, now seen corresponding path program 2 times [2020-10-21 23:10:40,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:40,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303108385] [2020-10-21 23:10:40,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:40,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:40,978 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 23:10:40,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303108385] [2020-10-21 23:10:40,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:10:40,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:10:40,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940903073] [2020-10-21 23:10:40,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:10:40,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:40,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:10:40,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:10:40,980 INFO L87 Difference]: Start difference. First operand 9396 states and 42985 transitions. Second operand 7 states. [2020-10-21 23:10:41,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:41,260 INFO L93 Difference]: Finished difference Result 21067 states and 85734 transitions. [2020-10-21 23:10:41,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:10:41,261 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-21 23:10:41,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:41,307 INFO L225 Difference]: With dead ends: 21067 [2020-10-21 23:10:41,307 INFO L226 Difference]: Without dead ends: 21030 [2020-10-21 23:10:41,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-21 23:10:41,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21030 states. [2020-10-21 23:10:41,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21030 to 9426. [2020-10-21 23:10:41,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9426 states. [2020-10-21 23:10:41,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9426 states to 9426 states and 43057 transitions. [2020-10-21 23:10:41,641 INFO L78 Accepts]: Start accepts. Automaton has 9426 states and 43057 transitions. Word has length 23 [2020-10-21 23:10:41,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:41,641 INFO L481 AbstractCegarLoop]: Abstraction has 9426 states and 43057 transitions. [2020-10-21 23:10:41,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:10:41,641 INFO L276 IsEmpty]: Start isEmpty. Operand 9426 states and 43057 transitions. [2020-10-21 23:10:41,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:10:41,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:41,644 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:41,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-21 23:10:41,644 INFO L429 AbstractCegarLoop]: === Iteration 24 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:41,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:41,644 INFO L82 PathProgramCache]: Analyzing trace with hash 643055737, now seen corresponding path program 1 times [2020-10-21 23:10:41,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:41,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189214409] [2020-10-21 23:10:41,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:41,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:41,705 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-21 23:10:41,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189214409] [2020-10-21 23:10:41,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664078187] [2020-10-21 23:10:41,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:10:41,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:41,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 23:10:41,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:10:41,811 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-21 23:10:41,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:10:41,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 23:10:41,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695764064] [2020-10-21 23:10:41,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 23:10:41,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:41,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 23:10:41,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 23:10:41,813 INFO L87 Difference]: Start difference. First operand 9426 states and 43057 transitions. Second operand 11 states. [2020-10-21 23:10:42,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:42,551 INFO L93 Difference]: Finished difference Result 30145 states and 115754 transitions. [2020-10-21 23:10:42,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:10:42,551 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-21 23:10:42,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:42,622 INFO L225 Difference]: With dead ends: 30145 [2020-10-21 23:10:42,622 INFO L226 Difference]: Without dead ends: 30125 [2020-10-21 23:10:42,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 23:10:42,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30125 states. [2020-10-21 23:10:43,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30125 to 9346. [2020-10-21 23:10:43,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9346 states. [2020-10-21 23:10:43,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9346 states to 9346 states and 42602 transitions. [2020-10-21 23:10:43,216 INFO L78 Accepts]: Start accepts. Automaton has 9346 states and 42602 transitions. Word has length 25 [2020-10-21 23:10:43,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:43,216 INFO L481 AbstractCegarLoop]: Abstraction has 9346 states and 42602 transitions. [2020-10-21 23:10:43,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 23:10:43,216 INFO L276 IsEmpty]: Start isEmpty. Operand 9346 states and 42602 transitions. [2020-10-21 23:10:43,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:10:43,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:43,219 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:43,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:10:43,419 INFO L429 AbstractCegarLoop]: === Iteration 25 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:43,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:43,420 INFO L82 PathProgramCache]: Analyzing trace with hash 646793650, now seen corresponding path program 1 times [2020-10-21 23:10:43,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:43,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885854695] [2020-10-21 23:10:43,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:43,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:43,465 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-21 23:10:43,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885854695] [2020-10-21 23:10:43,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318363474] [2020-10-21 23:10:43,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:10:43,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:43,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 23:10:43,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:10:43,567 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-21 23:10:43,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:10:43,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 23:10:43,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012442783] [2020-10-21 23:10:43,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 23:10:43,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:43,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 23:10:43,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 23:10:43,569 INFO L87 Difference]: Start difference. First operand 9346 states and 42602 transitions. Second operand 11 states. [2020-10-21 23:10:44,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:44,271 INFO L93 Difference]: Finished difference Result 29704 states and 113936 transitions. [2020-10-21 23:10:44,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:10:44,271 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-21 23:10:44,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:44,339 INFO L225 Difference]: With dead ends: 29704 [2020-10-21 23:10:44,339 INFO L226 Difference]: Without dead ends: 29684 [2020-10-21 23:10:44,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 23:10:44,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29684 states. [2020-10-21 23:10:44,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29684 to 9291. [2020-10-21 23:10:44,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9291 states. [2020-10-21 23:10:44,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9291 states to 9291 states and 42295 transitions. [2020-10-21 23:10:44,780 INFO L78 Accepts]: Start accepts. Automaton has 9291 states and 42295 transitions. Word has length 25 [2020-10-21 23:10:44,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:44,781 INFO L481 AbstractCegarLoop]: Abstraction has 9291 states and 42295 transitions. [2020-10-21 23:10:44,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 23:10:44,781 INFO L276 IsEmpty]: Start isEmpty. Operand 9291 states and 42295 transitions. [2020-10-21 23:10:44,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:10:44,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:44,784 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:44,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-10-21 23:10:44,985 INFO L429 AbstractCegarLoop]: === Iteration 26 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:44,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:44,986 INFO L82 PathProgramCache]: Analyzing trace with hash -2087196945, now seen corresponding path program 2 times [2020-10-21 23:10:44,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:44,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160488998] [2020-10-21 23:10:44,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:44,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:45,039 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-21 23:10:45,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160488998] [2020-10-21 23:10:45,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653507549] [2020-10-21 23:10:45,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:10:45,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 23:10:45,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:10:45,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 23:10:45,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:10:45,155 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-21 23:10:45,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:10:45,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 23:10:45,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887425479] [2020-10-21 23:10:45,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 23:10:45,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:45,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 23:10:45,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 23:10:45,157 INFO L87 Difference]: Start difference. First operand 9291 states and 42295 transitions. Second operand 11 states. [2020-10-21 23:10:45,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:45,863 INFO L93 Difference]: Finished difference Result 29267 states and 112142 transitions. [2020-10-21 23:10:45,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:10:45,863 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-21 23:10:45,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:45,929 INFO L225 Difference]: With dead ends: 29267 [2020-10-21 23:10:45,929 INFO L226 Difference]: Without dead ends: 29245 [2020-10-21 23:10:45,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 23:10:46,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29245 states. [2020-10-21 23:10:46,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29245 to 9288. [2020-10-21 23:10:46,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9288 states. [2020-10-21 23:10:46,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9288 states to 9288 states and 42242 transitions. [2020-10-21 23:10:46,350 INFO L78 Accepts]: Start accepts. Automaton has 9288 states and 42242 transitions. Word has length 25 [2020-10-21 23:10:46,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:46,350 INFO L481 AbstractCegarLoop]: Abstraction has 9288 states and 42242 transitions. [2020-10-21 23:10:46,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 23:10:46,350 INFO L276 IsEmpty]: Start isEmpty. Operand 9288 states and 42242 transitions. [2020-10-21 23:10:46,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:10:46,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:46,353 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:46,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-10-21 23:10:46,554 INFO L429 AbstractCegarLoop]: === Iteration 27 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:46,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:46,554 INFO L82 PathProgramCache]: Analyzing trace with hash -2087205470, now seen corresponding path program 2 times [2020-10-21 23:10:46,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:46,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307004605] [2020-10-21 23:10:46,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:46,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:46,615 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-21 23:10:46,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307004605] [2020-10-21 23:10:46,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465379442] [2020-10-21 23:10:46,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:10:46,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 23:10:46,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:10:46,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 23:10:46,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:10:46,770 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-21 23:10:46,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:10:46,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 23:10:46,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76759073] [2020-10-21 23:10:46,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 23:10:46,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:46,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 23:10:46,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 23:10:46,775 INFO L87 Difference]: Start difference. First operand 9288 states and 42242 transitions. Second operand 11 states. [2020-10-21 23:10:47,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:47,456 INFO L93 Difference]: Finished difference Result 28920 states and 110796 transitions. [2020-10-21 23:10:47,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:10:47,456 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-21 23:10:47,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:47,520 INFO L225 Difference]: With dead ends: 28920 [2020-10-21 23:10:47,520 INFO L226 Difference]: Without dead ends: 28898 [2020-10-21 23:10:47,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 23:10:47,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28898 states. [2020-10-21 23:10:48,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28898 to 9176. [2020-10-21 23:10:48,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9176 states. [2020-10-21 23:10:48,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9176 states to 9176 states and 41695 transitions. [2020-10-21 23:10:48,072 INFO L78 Accepts]: Start accepts. Automaton has 9176 states and 41695 transitions. Word has length 25 [2020-10-21 23:10:48,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:48,072 INFO L481 AbstractCegarLoop]: Abstraction has 9176 states and 41695 transitions. [2020-10-21 23:10:48,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 23:10:48,072 INFO L276 IsEmpty]: Start isEmpty. Operand 9176 states and 41695 transitions. [2020-10-21 23:10:48,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:10:48,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:48,076 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:48,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2020-10-21 23:10:48,277 INFO L429 AbstractCegarLoop]: === Iteration 28 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:48,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:48,277 INFO L82 PathProgramCache]: Analyzing trace with hash 855486073, now seen corresponding path program 3 times [2020-10-21 23:10:48,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:48,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653875581] [2020-10-21 23:10:48,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:48,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:48,331 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:10:48,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653875581] [2020-10-21 23:10:48,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481497363] [2020-10-21 23:10:48,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:10:48,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-21 23:10:48,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:10:48,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 23:10:48,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:10:48,445 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:10:48,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:10:48,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 23:10:48,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54380045] [2020-10-21 23:10:48,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 23:10:48,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:48,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 23:10:48,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 23:10:48,446 INFO L87 Difference]: Start difference. First operand 9176 states and 41695 transitions. Second operand 11 states. [2020-10-21 23:10:49,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:49,166 INFO L93 Difference]: Finished difference Result 29577 states and 113496 transitions. [2020-10-21 23:10:49,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:10:49,167 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-21 23:10:49,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:49,235 INFO L225 Difference]: With dead ends: 29577 [2020-10-21 23:10:49,235 INFO L226 Difference]: Without dead ends: 29557 [2020-10-21 23:10:49,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 23:10:49,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29557 states. [2020-10-21 23:10:49,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29557 to 9202. [2020-10-21 23:10:49,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9202 states. [2020-10-21 23:10:49,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9202 states to 9202 states and 41754 transitions. [2020-10-21 23:10:49,648 INFO L78 Accepts]: Start accepts. Automaton has 9202 states and 41754 transitions. Word has length 25 [2020-10-21 23:10:49,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:49,648 INFO L481 AbstractCegarLoop]: Abstraction has 9202 states and 41754 transitions. [2020-10-21 23:10:49,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 23:10:49,648 INFO L276 IsEmpty]: Start isEmpty. Operand 9202 states and 41754 transitions. [2020-10-21 23:10:49,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:10:49,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:49,651 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:49,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-10-21 23:10:49,852 INFO L429 AbstractCegarLoop]: === Iteration 29 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:49,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:49,853 INFO L82 PathProgramCache]: Analyzing trace with hash 855476835, now seen corresponding path program 1 times [2020-10-21 23:10:49,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:49,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851287036] [2020-10-21 23:10:49,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:49,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:49,903 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:10:49,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851287036] [2020-10-21 23:10:49,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878403840] [2020-10-21 23:10:49,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:10:49,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:49,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 23:10:49,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:10:50,033 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:10:50,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:10:50,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 23:10:50,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260246281] [2020-10-21 23:10:50,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 23:10:50,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:50,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 23:10:50,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 23:10:50,035 INFO L87 Difference]: Start difference. First operand 9202 states and 41754 transitions. Second operand 11 states. [2020-10-21 23:10:51,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:51,028 INFO L93 Difference]: Finished difference Result 29376 states and 112927 transitions. [2020-10-21 23:10:51,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:10:51,029 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-21 23:10:51,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:51,126 INFO L225 Difference]: With dead ends: 29376 [2020-10-21 23:10:51,126 INFO L226 Difference]: Without dead ends: 29356 [2020-10-21 23:10:51,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 23:10:51,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29356 states. [2020-10-21 23:10:51,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29356 to 9152. [2020-10-21 23:10:51,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9152 states. [2020-10-21 23:10:51,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9152 states to 9152 states and 41485 transitions. [2020-10-21 23:10:51,683 INFO L78 Accepts]: Start accepts. Automaton has 9152 states and 41485 transitions. Word has length 25 [2020-10-21 23:10:51,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:51,684 INFO L481 AbstractCegarLoop]: Abstraction has 9152 states and 41485 transitions. [2020-10-21 23:10:51,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 23:10:51,684 INFO L276 IsEmpty]: Start isEmpty. Operand 9152 states and 41485 transitions. [2020-10-21 23:10:51,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:10:51,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:51,687 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:51,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:10:51,902 INFO L429 AbstractCegarLoop]: === Iteration 30 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:51,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:51,902 INFO L82 PathProgramCache]: Analyzing trace with hash 874264633, now seen corresponding path program 4 times [2020-10-21 23:10:51,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:51,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098156130] [2020-10-21 23:10:51,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:51,954 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:10:51,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098156130] [2020-10-21 23:10:51,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594676458] [2020-10-21 23:10:51,955 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:10:52,040 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 23:10:52,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:10:52,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 23:10:52,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:10:52,070 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:10:52,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:10:52,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 23:10:52,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465117567] [2020-10-21 23:10:52,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 23:10:52,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:52,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 23:10:52,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 23:10:52,071 INFO L87 Difference]: Start difference. First operand 9152 states and 41485 transitions. Second operand 11 states. [2020-10-21 23:10:52,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:52,847 INFO L93 Difference]: Finished difference Result 28330 states and 108377 transitions. [2020-10-21 23:10:52,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:10:52,847 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-21 23:10:52,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:52,906 INFO L225 Difference]: With dead ends: 28330 [2020-10-21 23:10:52,906 INFO L226 Difference]: Without dead ends: 28308 [2020-10-21 23:10:52,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 23:10:53,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28308 states. [2020-10-21 23:10:53,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28308 to 8951. [2020-10-21 23:10:53,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8951 states. [2020-10-21 23:10:53,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8951 states to 8951 states and 40581 transitions. [2020-10-21 23:10:53,312 INFO L78 Accepts]: Start accepts. Automaton has 8951 states and 40581 transitions. Word has length 25 [2020-10-21 23:10:53,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:53,312 INFO L481 AbstractCegarLoop]: Abstraction has 8951 states and 40581 transitions. [2020-10-21 23:10:53,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 23:10:53,313 INFO L276 IsEmpty]: Start isEmpty. Operand 8951 states and 40581 transitions. [2020-10-21 23:10:53,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:10:53,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:53,316 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:53,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:10:53,517 INFO L429 AbstractCegarLoop]: === Iteration 31 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:53,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:53,518 INFO L82 PathProgramCache]: Analyzing trace with hash 865386915, now seen corresponding path program 2 times [2020-10-21 23:10:53,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:53,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046450178] [2020-10-21 23:10:53,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:53,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:53,575 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:10:53,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046450178] [2020-10-21 23:10:53,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665843061] [2020-10-21 23:10:53,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:10:53,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 23:10:53,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:10:53,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 23:10:53,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:10:53,692 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:10:53,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:10:53,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 23:10:53,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302624157] [2020-10-21 23:10:53,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 23:10:53,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:53,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 23:10:53,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 23:10:53,694 INFO L87 Difference]: Start difference. First operand 8951 states and 40581 transitions. Second operand 11 states. [2020-10-21 23:10:54,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:54,401 INFO L93 Difference]: Finished difference Result 28806 states and 110558 transitions. [2020-10-21 23:10:54,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:10:54,401 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-21 23:10:54,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:54,466 INFO L225 Difference]: With dead ends: 28806 [2020-10-21 23:10:54,466 INFO L226 Difference]: Without dead ends: 28779 [2020-10-21 23:10:54,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 23:10:54,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28779 states. [2020-10-21 23:10:54,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28779 to 8841. [2020-10-21 23:10:54,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8841 states. [2020-10-21 23:10:54,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8841 states to 8841 states and 40058 transitions. [2020-10-21 23:10:54,882 INFO L78 Accepts]: Start accepts. Automaton has 8841 states and 40058 transitions. Word has length 25 [2020-10-21 23:10:54,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:54,883 INFO L481 AbstractCegarLoop]: Abstraction has 8841 states and 40058 transitions. [2020-10-21 23:10:54,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 23:10:54,883 INFO L276 IsEmpty]: Start isEmpty. Operand 8841 states and 40058 transitions. [2020-10-21 23:10:54,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:10:54,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:54,887 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:55,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2020-10-21 23:10:55,094 INFO L429 AbstractCegarLoop]: === Iteration 32 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:55,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:55,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1242835239, now seen corresponding path program 3 times [2020-10-21 23:10:55,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:55,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617931297] [2020-10-21 23:10:55,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:55,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:55,147 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-21 23:10:55,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617931297] [2020-10-21 23:10:55,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980826997] [2020-10-21 23:10:55,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:10:55,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2020-10-21 23:10:55,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:10:55,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 23:10:55,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:10:55,253 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-21 23:10:55,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:10:55,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 23:10:55,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094172001] [2020-10-21 23:10:55,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 23:10:55,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:55,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 23:10:55,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 23:10:55,254 INFO L87 Difference]: Start difference. First operand 8841 states and 40058 transitions. Second operand 11 states. [2020-10-21 23:10:55,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:55,969 INFO L93 Difference]: Finished difference Result 28636 states and 109852 transitions. [2020-10-21 23:10:55,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:10:55,969 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-21 23:10:55,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:56,025 INFO L225 Difference]: With dead ends: 28636 [2020-10-21 23:10:56,026 INFO L226 Difference]: Without dead ends: 28616 [2020-10-21 23:10:56,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 23:10:56,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28616 states. [2020-10-21 23:10:56,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28616 to 8710. [2020-10-21 23:10:56,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8710 states. [2020-10-21 23:10:56,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8710 states to 8710 states and 39454 transitions. [2020-10-21 23:10:56,408 INFO L78 Accepts]: Start accepts. Automaton has 8710 states and 39454 transitions. Word has length 25 [2020-10-21 23:10:56,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:56,409 INFO L481 AbstractCegarLoop]: Abstraction has 8710 states and 39454 transitions. [2020-10-21 23:10:56,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 23:10:56,409 INFO L276 IsEmpty]: Start isEmpty. Operand 8710 states and 39454 transitions. [2020-10-21 23:10:56,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:10:56,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:56,412 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:56,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:10:56,613 INFO L429 AbstractCegarLoop]: === Iteration 33 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:56,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:56,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1133114986, now seen corresponding path program 3 times [2020-10-21 23:10:56,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:56,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237727383] [2020-10-21 23:10:56,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:56,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:56,667 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-21 23:10:56,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237727383] [2020-10-21 23:10:56,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501646947] [2020-10-21 23:10:56,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:10:56,742 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2020-10-21 23:10:56,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:10:56,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 23:10:56,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:10:56,768 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-21 23:10:56,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:10:56,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 23:10:56,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841351055] [2020-10-21 23:10:56,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 23:10:56,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:56,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 23:10:56,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 23:10:56,770 INFO L87 Difference]: Start difference. First operand 8710 states and 39454 transitions. Second operand 11 states. [2020-10-21 23:10:57,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:57,527 INFO L93 Difference]: Finished difference Result 28297 states and 108461 transitions. [2020-10-21 23:10:57,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:10:57,528 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-21 23:10:57,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:57,596 INFO L225 Difference]: With dead ends: 28297 [2020-10-21 23:10:57,596 INFO L226 Difference]: Without dead ends: 28277 [2020-10-21 23:10:57,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 23:10:57,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28277 states. [2020-10-21 23:10:58,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28277 to 8600. [2020-10-21 23:10:58,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8600 states. [2020-10-21 23:10:58,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8600 states to 8600 states and 38986 transitions. [2020-10-21 23:10:58,147 INFO L78 Accepts]: Start accepts. Automaton has 8600 states and 38986 transitions. Word has length 25 [2020-10-21 23:10:58,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:58,147 INFO L481 AbstractCegarLoop]: Abstraction has 8600 states and 38986 transitions. [2020-10-21 23:10:58,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 23:10:58,147 INFO L276 IsEmpty]: Start isEmpty. Operand 8600 states and 38986 transitions. [2020-10-21 23:10:58,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:10:58,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:58,150 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:58,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2020-10-21 23:10:58,351 INFO L429 AbstractCegarLoop]: === Iteration 34 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:58,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:58,352 INFO L82 PathProgramCache]: Analyzing trace with hash 152652457, now seen corresponding path program 4 times [2020-10-21 23:10:58,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:58,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212709420] [2020-10-21 23:10:58,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:58,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:10:58,410 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-21 23:10:58,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212709420] [2020-10-21 23:10:58,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347380551] [2020-10-21 23:10:58,411 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:10:58,520 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 23:10:58,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:10:58,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 23:10:58,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:10:58,550 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-21 23:10:58,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:10:58,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 23:10:58,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231733254] [2020-10-21 23:10:58,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 23:10:58,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:10:58,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 23:10:58,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 23:10:58,552 INFO L87 Difference]: Start difference. First operand 8600 states and 38986 transitions. Second operand 11 states. [2020-10-21 23:10:59,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:10:59,281 INFO L93 Difference]: Finished difference Result 28565 states and 109596 transitions. [2020-10-21 23:10:59,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:10:59,281 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-21 23:10:59,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:10:59,346 INFO L225 Difference]: With dead ends: 28565 [2020-10-21 23:10:59,346 INFO L226 Difference]: Without dead ends: 28538 [2020-10-21 23:10:59,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 23:10:59,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28538 states. [2020-10-21 23:10:59,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28538 to 8563. [2020-10-21 23:10:59,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8563 states. [2020-10-21 23:10:59,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8563 states to 8563 states and 38809 transitions. [2020-10-21 23:10:59,763 INFO L78 Accepts]: Start accepts. Automaton has 8563 states and 38809 transitions. Word has length 25 [2020-10-21 23:10:59,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:10:59,763 INFO L481 AbstractCegarLoop]: Abstraction has 8563 states and 38809 transitions. [2020-10-21 23:10:59,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 23:10:59,763 INFO L276 IsEmpty]: Start isEmpty. Operand 8563 states and 38809 transitions. [2020-10-21 23:10:59,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:10:59,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:10:59,766 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:10:59,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:10:59,967 INFO L429 AbstractCegarLoop]: === Iteration 35 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:10:59,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:10:59,968 INFO L82 PathProgramCache]: Analyzing trace with hash 152653170, now seen corresponding path program 4 times [2020-10-21 23:10:59,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:10:59,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711822747] [2020-10-21 23:10:59,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:10:59,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:11:00,016 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-21 23:11:00,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711822747] [2020-10-21 23:11:00,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049350487] [2020-10-21 23:11:00,017 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:11:00,100 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 23:11:00,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:11:00,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 23:11:00,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:11:00,127 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-21 23:11:00,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:11:00,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 23:11:00,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288407828] [2020-10-21 23:11:00,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 23:11:00,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:11:00,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 23:11:00,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 23:11:00,128 INFO L87 Difference]: Start difference. First operand 8563 states and 38809 transitions. Second operand 11 states. [2020-10-21 23:11:00,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:11:00,838 INFO L93 Difference]: Finished difference Result 28213 states and 108237 transitions. [2020-10-21 23:11:00,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:11:00,838 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-21 23:11:00,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:11:00,900 INFO L225 Difference]: With dead ends: 28213 [2020-10-21 23:11:00,900 INFO L226 Difference]: Without dead ends: 28186 [2020-10-21 23:11:00,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 23:11:01,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28186 states. [2020-10-21 23:11:01,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28186 to 8421. [2020-10-21 23:11:01,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8421 states. [2020-10-21 23:11:01,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8421 states to 8421 states and 38146 transitions. [2020-10-21 23:11:01,316 INFO L78 Accepts]: Start accepts. Automaton has 8421 states and 38146 transitions. Word has length 25 [2020-10-21 23:11:01,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:11:01,317 INFO L481 AbstractCegarLoop]: Abstraction has 8421 states and 38146 transitions. [2020-10-21 23:11:01,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 23:11:01,317 INFO L276 IsEmpty]: Start isEmpty. Operand 8421 states and 38146 transitions. [2020-10-21 23:11:01,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:11:01,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:11:01,320 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:11:01,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2020-10-21 23:11:01,527 INFO L429 AbstractCegarLoop]: === Iteration 36 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:11:01,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:11:01,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1307676527, now seen corresponding path program 5 times [2020-10-21 23:11:01,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:11:01,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523806951] [2020-10-21 23:11:01,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:11:01,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:11:01,577 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 23:11:01,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523806951] [2020-10-21 23:11:01,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:11:01,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:11:01,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413833100] [2020-10-21 23:11:01,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:11:01,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:11:01,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:11:01,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:11:01,579 INFO L87 Difference]: Start difference. First operand 8421 states and 38146 transitions. Second operand 9 states. [2020-10-21 23:11:02,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:11:02,263 INFO L93 Difference]: Finished difference Result 28226 states and 108274 transitions. [2020-10-21 23:11:02,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:11:02,263 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 23:11:02,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:11:02,332 INFO L225 Difference]: With dead ends: 28226 [2020-10-21 23:11:02,332 INFO L226 Difference]: Without dead ends: 28206 [2020-10-21 23:11:02,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 23:11:02,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28206 states. [2020-10-21 23:11:02,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28206 to 8277. [2020-10-21 23:11:02,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8277 states. [2020-10-21 23:11:02,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8277 states to 8277 states and 37487 transitions. [2020-10-21 23:11:02,762 INFO L78 Accepts]: Start accepts. Automaton has 8277 states and 37487 transitions. Word has length 25 [2020-10-21 23:11:02,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:11:02,763 INFO L481 AbstractCegarLoop]: Abstraction has 8277 states and 37487 transitions. [2020-10-21 23:11:02,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:11:02,763 INFO L276 IsEmpty]: Start isEmpty. Operand 8277 states and 37487 transitions. [2020-10-21 23:11:02,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:11:02,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:11:02,767 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:11:02,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-21 23:11:02,768 INFO L429 AbstractCegarLoop]: === Iteration 37 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:11:02,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:11:02,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1307667289, now seen corresponding path program 5 times [2020-10-21 23:11:02,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:11:02,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543546488] [2020-10-21 23:11:02,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:11:02,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:11:02,820 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 23:11:02,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543546488] [2020-10-21 23:11:02,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:11:02,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:11:02,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734359441] [2020-10-21 23:11:02,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:11:02,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:11:02,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:11:02,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:11:02,822 INFO L87 Difference]: Start difference. First operand 8277 states and 37487 transitions. Second operand 9 states. [2020-10-21 23:11:03,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:11:03,532 INFO L93 Difference]: Finished difference Result 27801 states and 106552 transitions. [2020-10-21 23:11:03,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:11:03,532 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 23:11:03,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:11:03,597 INFO L225 Difference]: With dead ends: 27801 [2020-10-21 23:11:03,597 INFO L226 Difference]: Without dead ends: 27781 [2020-10-21 23:11:03,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 23:11:03,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27781 states. [2020-10-21 23:11:03,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27781 to 8127. [2020-10-21 23:11:03,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8127 states. [2020-10-21 23:11:04,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8127 states to 8127 states and 36806 transitions. [2020-10-21 23:11:04,000 INFO L78 Accepts]: Start accepts. Automaton has 8127 states and 36806 transitions. Word has length 25 [2020-10-21 23:11:04,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:11:04,000 INFO L481 AbstractCegarLoop]: Abstraction has 8127 states and 36806 transitions. [2020-10-21 23:11:04,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:11:04,001 INFO L276 IsEmpty]: Start isEmpty. Operand 8127 states and 36806 transitions. [2020-10-21 23:11:04,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:11:04,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:11:04,004 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:11:04,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-21 23:11:04,004 INFO L429 AbstractCegarLoop]: === Iteration 38 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:11:04,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:11:04,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1308361007, now seen corresponding path program 6 times [2020-10-21 23:11:04,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:11:04,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147178998] [2020-10-21 23:11:04,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:11:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:11:04,057 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 23:11:04,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147178998] [2020-10-21 23:11:04,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:11:04,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:11:04,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261034745] [2020-10-21 23:11:04,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:11:04,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:11:04,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:11:04,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:11:04,059 INFO L87 Difference]: Start difference. First operand 8127 states and 36806 transitions. Second operand 9 states. [2020-10-21 23:11:04,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:11:04,700 INFO L93 Difference]: Finished difference Result 27548 states and 105447 transitions. [2020-10-21 23:11:04,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:11:04,700 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 23:11:04,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:11:04,762 INFO L225 Difference]: With dead ends: 27548 [2020-10-21 23:11:04,762 INFO L226 Difference]: Without dead ends: 27521 [2020-10-21 23:11:04,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 23:11:04,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27521 states. [2020-10-21 23:11:05,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27521 to 7841. [2020-10-21 23:11:05,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7841 states. [2020-10-21 23:11:05,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7841 states to 7841 states and 35578 transitions. [2020-10-21 23:11:05,148 INFO L78 Accepts]: Start accepts. Automaton has 7841 states and 35578 transitions. Word has length 25 [2020-10-21 23:11:05,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:11:05,149 INFO L481 AbstractCegarLoop]: Abstraction has 7841 states and 35578 transitions. [2020-10-21 23:11:05,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:11:05,149 INFO L276 IsEmpty]: Start isEmpty. Operand 7841 states and 35578 transitions. [2020-10-21 23:11:05,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:11:05,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:11:05,152 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:11:05,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-21 23:11:05,152 INFO L429 AbstractCegarLoop]: === Iteration 39 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:11:05,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:11:05,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1308352482, now seen corresponding path program 5 times [2020-10-21 23:11:05,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:11:05,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21956600] [2020-10-21 23:11:05,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:11:05,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:11:05,203 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 23:11:05,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21956600] [2020-10-21 23:11:05,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:11:05,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:11:05,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628100074] [2020-10-21 23:11:05,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:11:05,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:11:05,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:11:05,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:11:05,204 INFO L87 Difference]: Start difference. First operand 7841 states and 35578 transitions. Second operand 9 states. [2020-10-21 23:11:05,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:11:05,873 INFO L93 Difference]: Finished difference Result 27167 states and 103966 transitions. [2020-10-21 23:11:05,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:11:05,873 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 23:11:05,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:11:05,934 INFO L225 Difference]: With dead ends: 27167 [2020-10-21 23:11:05,934 INFO L226 Difference]: Without dead ends: 27147 [2020-10-21 23:11:05,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 23:11:06,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27147 states. [2020-10-21 23:11:06,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27147 to 7743. [2020-10-21 23:11:06,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7743 states. [2020-10-21 23:11:06,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7743 states to 7743 states and 35142 transitions. [2020-10-21 23:11:06,306 INFO L78 Accepts]: Start accepts. Automaton has 7743 states and 35142 transitions. Word has length 25 [2020-10-21 23:11:06,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:11:06,306 INFO L481 AbstractCegarLoop]: Abstraction has 7743 states and 35142 transitions. [2020-10-21 23:11:06,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:11:06,306 INFO L276 IsEmpty]: Start isEmpty. Operand 7743 states and 35142 transitions. [2020-10-21 23:11:06,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:11:06,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:11:06,308 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:11:06,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-21 23:11:06,309 INFO L429 AbstractCegarLoop]: === Iteration 40 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:11:06,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:11:06,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1299483289, now seen corresponding path program 6 times [2020-10-21 23:11:06,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:11:06,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555179401] [2020-10-21 23:11:06,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:11:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:11:06,357 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 23:11:06,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555179401] [2020-10-21 23:11:06,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:11:06,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:11:06,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413636324] [2020-10-21 23:11:06,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:11:06,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:11:06,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:11:06,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:11:06,359 INFO L87 Difference]: Start difference. First operand 7743 states and 35142 transitions. Second operand 9 states. [2020-10-21 23:11:07,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:11:07,035 INFO L93 Difference]: Finished difference Result 26955 states and 103085 transitions. [2020-10-21 23:11:07,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:11:07,035 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 23:11:07,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:11:07,099 INFO L225 Difference]: With dead ends: 26955 [2020-10-21 23:11:07,100 INFO L226 Difference]: Without dead ends: 26928 [2020-10-21 23:11:07,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 23:11:07,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26928 states. [2020-10-21 23:11:07,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26928 to 7532. [2020-10-21 23:11:07,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7532 states. [2020-10-21 23:11:07,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7532 states to 7532 states and 34256 transitions. [2020-10-21 23:11:07,480 INFO L78 Accepts]: Start accepts. Automaton has 7532 states and 34256 transitions. Word has length 25 [2020-10-21 23:11:07,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:11:07,480 INFO L481 AbstractCegarLoop]: Abstraction has 7532 states and 34256 transitions. [2020-10-21 23:11:07,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:11:07,480 INFO L276 IsEmpty]: Start isEmpty. Operand 7532 states and 34256 transitions. [2020-10-21 23:11:07,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:11:07,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:11:07,483 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:11:07,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-10-21 23:11:07,483 INFO L429 AbstractCegarLoop]: === Iteration 41 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:11:07,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:11:07,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1299484002, now seen corresponding path program 6 times [2020-10-21 23:11:07,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:11:07,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412953308] [2020-10-21 23:11:07,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:11:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:11:07,531 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 23:11:07,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412953308] [2020-10-21 23:11:07,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:11:07,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:11:07,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641935627] [2020-10-21 23:11:07,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:11:07,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:11:07,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:11:07,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:11:07,533 INFO L87 Difference]: Start difference. First operand 7532 states and 34256 transitions. Second operand 9 states. [2020-10-21 23:11:08,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:11:08,246 INFO L93 Difference]: Finished difference Result 26632 states and 101828 transitions. [2020-10-21 23:11:08,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:11:08,246 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 23:11:08,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:11:08,312 INFO L225 Difference]: With dead ends: 26632 [2020-10-21 23:11:08,312 INFO L226 Difference]: Without dead ends: 26605 [2020-10-21 23:11:08,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 23:11:08,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26605 states. [2020-10-21 23:11:08,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26605 to 7269. [2020-10-21 23:11:08,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7269 states. [2020-10-21 23:11:08,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7269 states to 7269 states and 33154 transitions. [2020-10-21 23:11:08,788 INFO L78 Accepts]: Start accepts. Automaton has 7269 states and 33154 transitions. Word has length 25 [2020-10-21 23:11:08,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:11:08,788 INFO L481 AbstractCegarLoop]: Abstraction has 7269 states and 33154 transitions. [2020-10-21 23:11:08,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:11:08,788 INFO L276 IsEmpty]: Start isEmpty. Operand 7269 states and 33154 transitions. [2020-10-21 23:11:08,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:11:08,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:11:08,791 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:11:08,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-10-21 23:11:08,791 INFO L429 AbstractCegarLoop]: === Iteration 42 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:11:08,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:11:08,791 INFO L82 PathProgramCache]: Analyzing trace with hash -717538963, now seen corresponding path program 1 times [2020-10-21 23:11:08,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:11:08,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123708024] [2020-10-21 23:11:08,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:11:08,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:11:08,812 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-21 23:11:08,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123708024] [2020-10-21 23:11:08,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:11:08,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:11:08,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116434629] [2020-10-21 23:11:08,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:11:08,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:11:08,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:11:08,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:11:08,814 INFO L87 Difference]: Start difference. First operand 7269 states and 33154 transitions. Second operand 5 states. [2020-10-21 23:11:08,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:11:08,947 INFO L93 Difference]: Finished difference Result 11919 states and 51979 transitions. [2020-10-21 23:11:08,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:11:08,948 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-21 23:11:08,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:11:08,977 INFO L225 Difference]: With dead ends: 11919 [2020-10-21 23:11:08,977 INFO L226 Difference]: Without dead ends: 11887 [2020-10-21 23:11:08,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:11:09,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11887 states. [2020-10-21 23:11:09,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11887 to 8560. [2020-10-21 23:11:09,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8560 states. [2020-10-21 23:11:09,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8560 states to 8560 states and 38495 transitions. [2020-10-21 23:11:09,217 INFO L78 Accepts]: Start accepts. Automaton has 8560 states and 38495 transitions. Word has length 25 [2020-10-21 23:11:09,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:11:09,217 INFO L481 AbstractCegarLoop]: Abstraction has 8560 states and 38495 transitions. [2020-10-21 23:11:09,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:11:09,217 INFO L276 IsEmpty]: Start isEmpty. Operand 8560 states and 38495 transitions. [2020-10-21 23:11:09,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-21 23:11:09,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:11:09,221 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:11:09,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-10-21 23:11:09,221 INFO L429 AbstractCegarLoop]: === Iteration 43 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:11:09,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:11:09,222 INFO L82 PathProgramCache]: Analyzing trace with hash -775462629, now seen corresponding path program 1 times [2020-10-21 23:11:09,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:11:09,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419997885] [2020-10-21 23:11:09,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:11:09,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 23:11:09,230 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 23:11:09,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 23:11:09,236 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 23:11:09,244 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-21 23:11:09,244 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-21 23:11:09,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-10-21 23:11:09,245 WARN L371 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-21 23:11:09,245 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-10-21 23:11:09,269 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,269 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,269 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,269 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,269 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,269 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,269 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,270 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,270 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,270 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,270 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,270 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,270 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,270 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,270 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,271 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,271 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,271 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,271 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,271 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,271 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,271 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,271 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,272 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,272 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,272 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,272 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,272 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,272 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,272 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,272 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,272 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,273 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,273 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,273 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,273 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,273 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,273 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,273 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,273 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,274 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,274 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,274 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,274 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,274 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,274 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,274 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,274 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,275 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,275 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,275 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,275 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,275 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,275 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,275 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,275 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,276 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,276 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,276 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,276 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,276 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,276 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,276 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,276 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,277 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,277 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,277 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,277 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,277 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,277 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,278 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,278 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,278 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,278 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,278 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,279 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,279 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,279 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,279 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,279 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,279 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,279 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,279 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,280 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,280 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,280 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,280 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,280 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,280 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,280 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,280 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,281 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,281 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,281 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,281 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,281 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,281 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,281 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,281 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,281 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,282 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,282 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,282 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,282 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,282 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,282 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,282 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,282 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,283 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,283 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,283 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,283 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,283 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,283 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,283 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,283 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,283 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,284 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,284 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,284 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,284 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,284 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,284 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,284 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,284 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,285 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,285 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,285 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,285 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,285 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,285 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,285 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,285 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,286 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,286 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,286 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,287 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,287 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,287 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,287 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,287 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,287 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,287 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,287 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,287 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,288 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,288 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,288 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,288 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,288 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,289 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,289 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,289 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,289 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,289 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,290 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,290 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,290 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,291 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,291 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,291 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,291 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,292 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,292 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,292 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,292 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,293 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,293 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,293 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,293 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,294 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,294 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,294 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,294 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,295 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,295 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,295 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,295 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,296 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,296 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,296 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,296 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,297 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,297 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,297 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,297 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,298 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,298 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,298 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,298 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,299 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,299 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,299 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,300 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,300 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,300 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,300 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,300 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,301 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,301 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,301 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,302 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,302 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,303 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,303 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,303 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,303 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,303 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,308 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,308 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,308 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,309 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,309 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,310 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,310 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,310 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,310 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,310 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,312 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,312 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,312 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,312 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,312 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,313 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,313 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,313 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,314 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,314 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:11:09,315 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 23:11:09,315 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-10-21 23:11:09,315 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 23:11:09,315 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 23:11:09,315 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-21 23:11:09,315 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 23:11:09,315 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 23:11:09,315 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 23:11:09,315 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 23:11:09,316 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 23:11:09,317 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-21 23:11:09,317 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 188 places, 175 transitions, 470 flow [2020-10-21 23:11:09,317 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 188 places, 175 transitions, 470 flow [2020-10-21 23:11:09,317 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 188 places, 175 transitions, 470 flow [2020-10-21 23:11:09,338 INFO L129 PetriNetUnfolder]: 9/180 cut-off events. [2020-10-21 23:11:09,338 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-10-21 23:11:09,341 INFO L80 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 180 events. 9/180 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 323 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 215. Up to 14 conditions per place. [2020-10-21 23:11:09,348 INFO L116 LiptonReduction]: Number of co-enabled transitions 4212 [2020-10-21 23:11:11,083 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-10-21 23:11:11,886 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2020-10-21 23:11:11,999 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-21 23:11:12,037 INFO L131 LiptonReduction]: Checked pairs total: 6134 [2020-10-21 23:11:12,037 INFO L133 LiptonReduction]: Total number of compositions: 193 [2020-10-21 23:11:12,038 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 45 transitions, 210 flow [2020-10-21 23:11:13,342 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 18584 states. [2020-10-21 23:11:13,342 INFO L276 IsEmpty]: Start isEmpty. Operand 18584 states. [2020-10-21 23:11:13,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-21 23:11:13,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:11:13,343 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-21 23:11:13,343 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:11:13,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:11:13,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1673091, now seen corresponding path program 1 times [2020-10-21 23:11:13,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:11:13,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989713367] [2020-10-21 23:11:13,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:11:13,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:11:13,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:11:13,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989713367] [2020-10-21 23:11:13,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:11:13,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 23:11:13,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602624797] [2020-10-21 23:11:13,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 23:11:13,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:11:13,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 23:11:13,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:11:13,356 INFO L87 Difference]: Start difference. First operand 18584 states. Second operand 3 states. [2020-10-21 23:11:13,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:11:13,507 INFO L93 Difference]: Finished difference Result 17885 states and 92755 transitions. [2020-10-21 23:11:13,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 23:11:13,507 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-21 23:11:13,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:11:13,559 INFO L225 Difference]: With dead ends: 17885 [2020-10-21 23:11:13,560 INFO L226 Difference]: Without dead ends: 16791 [2020-10-21 23:11:13,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:11:13,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16791 states. [2020-10-21 23:11:14,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16791 to 16791. [2020-10-21 23:11:14,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16791 states. [2020-10-21 23:11:14,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16791 states to 16791 states and 86558 transitions. [2020-10-21 23:11:14,209 INFO L78 Accepts]: Start accepts. Automaton has 16791 states and 86558 transitions. Word has length 3 [2020-10-21 23:11:14,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:11:14,209 INFO L481 AbstractCegarLoop]: Abstraction has 16791 states and 86558 transitions. [2020-10-21 23:11:14,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 23:11:14,209 INFO L276 IsEmpty]: Start isEmpty. Operand 16791 states and 86558 transitions. [2020-10-21 23:11:14,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 23:11:14,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:11:14,210 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:11:14,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-10-21 23:11:14,210 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:11:14,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:11:14,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1275789991, now seen corresponding path program 1 times [2020-10-21 23:11:14,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:11:14,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985801875] [2020-10-21 23:11:14,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:11:14,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:11:14,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:11:14,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985801875] [2020-10-21 23:11:14,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:11:14,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:11:14,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686814138] [2020-10-21 23:11:14,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:11:14,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:11:14,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:11:14,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:11:14,228 INFO L87 Difference]: Start difference. First operand 16791 states and 86558 transitions. Second operand 5 states. [2020-10-21 23:11:15,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:11:15,651 INFO L93 Difference]: Finished difference Result 30985 states and 150574 transitions. [2020-10-21 23:11:15,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:11:15,652 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-21 23:11:15,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:11:15,733 INFO L225 Difference]: With dead ends: 30985 [2020-10-21 23:11:15,733 INFO L226 Difference]: Without dead ends: 30977 [2020-10-21 23:11:15,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:11:16,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30977 states. [2020-10-21 23:11:16,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30977 to 19868. [2020-10-21 23:11:16,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19868 states. [2020-10-21 23:11:16,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19868 states to 19868 states and 103363 transitions. [2020-10-21 23:11:16,621 INFO L78 Accepts]: Start accepts. Automaton has 19868 states and 103363 transitions. Word has length 9 [2020-10-21 23:11:16,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:11:16,622 INFO L481 AbstractCegarLoop]: Abstraction has 19868 states and 103363 transitions. [2020-10-21 23:11:16,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:11:16,622 INFO L276 IsEmpty]: Start isEmpty. Operand 19868 states and 103363 transitions. [2020-10-21 23:11:16,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 23:11:16,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:11:16,622 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:11:16,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-10-21 23:11:16,622 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:11:16,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:11:16,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1409436270, now seen corresponding path program 1 times [2020-10-21 23:11:16,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:11:16,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220456587] [2020-10-21 23:11:16,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:11:16,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:11:16,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 23:11:16,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220456587] [2020-10-21 23:11:16,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:11:16,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:11:16,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179758364] [2020-10-21 23:11:16,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:11:16,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:11:16,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:11:16,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:11:16,651 INFO L87 Difference]: Start difference. First operand 19868 states and 103363 transitions. Second operand 5 states. [2020-10-21 23:11:16,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:11:16,913 INFO L93 Difference]: Finished difference Result 36296 states and 178836 transitions. [2020-10-21 23:11:16,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:11:16,914 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-21 23:11:16,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:11:17,023 INFO L225 Difference]: With dead ends: 36296 [2020-10-21 23:11:17,023 INFO L226 Difference]: Without dead ends: 36280 [2020-10-21 23:11:17,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:11:17,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36280 states. [2020-10-21 23:11:17,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36280 to 23806. [2020-10-21 23:11:17,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23806 states. [2020-10-21 23:11:18,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23806 states to 23806 states and 125455 transitions. [2020-10-21 23:11:18,086 INFO L78 Accepts]: Start accepts. Automaton has 23806 states and 125455 transitions. Word has length 13 [2020-10-21 23:11:18,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:11:18,086 INFO L481 AbstractCegarLoop]: Abstraction has 23806 states and 125455 transitions. [2020-10-21 23:11:18,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:11:18,086 INFO L276 IsEmpty]: Start isEmpty. Operand 23806 states and 125455 transitions. [2020-10-21 23:11:18,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 23:11:18,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:11:18,087 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:11:18,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-10-21 23:11:18,087 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:11:18,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:11:18,087 INFO L82 PathProgramCache]: Analyzing trace with hash 431937222, now seen corresponding path program 1 times [2020-10-21 23:11:18,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:11:18,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113760930] [2020-10-21 23:11:18,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:11:18,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:11:18,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:11:18,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113760930] [2020-10-21 23:11:18,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444243642] [2020-10-21 23:11:18,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:11:18,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:11:18,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-21 23:11:18,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:11:18,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:11:18,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:11:18,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-21 23:11:18,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452973508] [2020-10-21 23:11:18,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:11:18,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:11:18,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:11:18,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:11:18,231 INFO L87 Difference]: Start difference. First operand 23806 states and 125455 transitions. Second operand 9 states. [2020-10-21 23:11:18,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:11:18,767 INFO L93 Difference]: Finished difference Result 56720 states and 262685 transitions. [2020-10-21 23:11:18,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:11:18,768 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-10-21 23:11:18,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:11:18,929 INFO L225 Difference]: With dead ends: 56720 [2020-10-21 23:11:18,929 INFO L226 Difference]: Without dead ends: 56704 [2020-10-21 23:11:18,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-21 23:11:19,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56704 states. [2020-10-21 23:11:22,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56704 to 23629. [2020-10-21 23:11:22,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23629 states. [2020-10-21 23:11:22,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23629 states to 23629 states and 124418 transitions. [2020-10-21 23:11:22,459 INFO L78 Accepts]: Start accepts. Automaton has 23629 states and 124418 transitions. Word has length 15 [2020-10-21 23:11:22,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:11:22,459 INFO L481 AbstractCegarLoop]: Abstraction has 23629 states and 124418 transitions. [2020-10-21 23:11:22,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:11:22,460 INFO L276 IsEmpty]: Start isEmpty. Operand 23629 states and 124418 transitions. [2020-10-21 23:11:22,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 23:11:22,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:11:22,460 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:11:22,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:11:22,661 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:11:22,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:11:22,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1553563130, now seen corresponding path program 2 times [2020-10-21 23:11:22,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:11:22,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770581010] [2020-10-21 23:11:22,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:11:22,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:11:22,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 23:11:22,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770581010] [2020-10-21 23:11:22,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:11:22,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:11:22,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076888218] [2020-10-21 23:11:22,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:11:22,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:11:22,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:11:22,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:11:22,695 INFO L87 Difference]: Start difference. First operand 23629 states and 124418 transitions. Second operand 7 states. [2020-10-21 23:11:23,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:11:23,215 INFO L93 Difference]: Finished difference Result 58078 states and 269185 transitions. [2020-10-21 23:11:23,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:11:23,215 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-21 23:11:23,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:11:23,394 INFO L225 Difference]: With dead ends: 58078 [2020-10-21 23:11:23,394 INFO L226 Difference]: Without dead ends: 58061 [2020-10-21 23:11:23,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-21 23:11:24,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58061 states. [2020-10-21 23:11:24,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58061 to 23109. [2020-10-21 23:11:24,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23109 states. [2020-10-21 23:11:24,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23109 states to 23109 states and 121651 transitions. [2020-10-21 23:11:24,771 INFO L78 Accepts]: Start accepts. Automaton has 23109 states and 121651 transitions. Word has length 15 [2020-10-21 23:11:24,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:11:24,771 INFO L481 AbstractCegarLoop]: Abstraction has 23109 states and 121651 transitions. [2020-10-21 23:11:24,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:11:24,772 INFO L276 IsEmpty]: Start isEmpty. Operand 23109 states and 121651 transitions. [2020-10-21 23:11:24,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-21 23:11:24,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:11:24,772 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:11:24,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2020-10-21 23:11:24,772 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:11:24,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:11:24,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1071943576, now seen corresponding path program 1 times [2020-10-21 23:11:24,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:11:24,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261472887] [2020-10-21 23:11:24,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:11:24,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:11:24,790 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:11:24,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261472887] [2020-10-21 23:11:24,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:11:24,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:11:24,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877815986] [2020-10-21 23:11:24,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:11:24,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:11:24,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:11:24,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:11:24,793 INFO L87 Difference]: Start difference. First operand 23109 states and 121651 transitions. Second operand 5 states. [2020-10-21 23:11:25,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:11:25,100 INFO L93 Difference]: Finished difference Result 41885 states and 209629 transitions. [2020-10-21 23:11:25,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:11:25,101 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-21 23:11:25,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:11:25,243 INFO L225 Difference]: With dead ends: 41885 [2020-10-21 23:11:25,243 INFO L226 Difference]: Without dead ends: 41856 [2020-10-21 23:11:25,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:11:25,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41856 states. [2020-10-21 23:11:27,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41856 to 28237. [2020-10-21 23:11:27,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28237 states. [2020-10-21 23:11:27,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28237 states to 28237 states and 150261 transitions. [2020-10-21 23:11:27,191 INFO L78 Accepts]: Start accepts. Automaton has 28237 states and 150261 transitions. Word has length 17 [2020-10-21 23:11:27,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:11:27,191 INFO L481 AbstractCegarLoop]: Abstraction has 28237 states and 150261 transitions. [2020-10-21 23:11:27,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:11:27,191 INFO L276 IsEmpty]: Start isEmpty. Operand 28237 states and 150261 transitions. [2020-10-21 23:11:27,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 23:11:27,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:11:27,192 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:11:27,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2020-10-21 23:11:27,192 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:11:27,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:11:27,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1190529332, now seen corresponding path program 1 times [2020-10-21 23:11:27,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:11:27,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738811695] [2020-10-21 23:11:27,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:11:27,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:11:27,222 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-21 23:11:27,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738811695] [2020-10-21 23:11:27,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719666450] [2020-10-21 23:11:27,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:11:27,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:11:27,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-21 23:11:27,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:11:27,336 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-21 23:11:27,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:11:27,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-21 23:11:27,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352040135] [2020-10-21 23:11:27,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:11:27,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:11:27,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:11:27,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:11:27,337 INFO L87 Difference]: Start difference. First operand 28237 states and 150261 transitions. Second operand 9 states. [2020-10-21 23:11:27,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:11:27,920 INFO L93 Difference]: Finished difference Result 66831 states and 314874 transitions. [2020-10-21 23:11:27,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:11:27,921 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-10-21 23:11:27,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:11:28,119 INFO L225 Difference]: With dead ends: 66831 [2020-10-21 23:11:28,120 INFO L226 Difference]: Without dead ends: 66807 [2020-10-21 23:11:28,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-21 23:11:28,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66807 states. [2020-10-21 23:11:29,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66807 to 28673. [2020-10-21 23:11:29,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28673 states. [2020-10-21 23:11:29,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28673 states to 28673 states and 152375 transitions. [2020-10-21 23:11:29,697 INFO L78 Accepts]: Start accepts. Automaton has 28673 states and 152375 transitions. Word has length 19 [2020-10-21 23:11:29,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:11:29,697 INFO L481 AbstractCegarLoop]: Abstraction has 28673 states and 152375 transitions. [2020-10-21 23:11:29,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:11:29,697 INFO L276 IsEmpty]: Start isEmpty. Operand 28673 states and 152375 transitions. [2020-10-21 23:11:29,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 23:11:29,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:11:29,698 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:11:29,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:11:29,913 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:11:29,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:11:29,913 INFO L82 PathProgramCache]: Analyzing trace with hash -524480060, now seen corresponding path program 1 times [2020-10-21 23:11:29,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:11:29,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107873756] [2020-10-21 23:11:29,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:11:29,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:11:29,946 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 23:11:29,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107873756] [2020-10-21 23:11:29,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550532608] [2020-10-21 23:11:29,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:11:30,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:11:30,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-21 23:11:30,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:11:30,057 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 23:11:30,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:11:30,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-21 23:11:30,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754784714] [2020-10-21 23:11:30,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:11:30,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:11:30,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:11:30,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:11:30,058 INFO L87 Difference]: Start difference. First operand 28673 states and 152375 transitions. Second operand 9 states. [2020-10-21 23:11:30,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:11:30,644 INFO L93 Difference]: Finished difference Result 69484 states and 328264 transitions. [2020-10-21 23:11:30,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:11:30,645 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-10-21 23:11:30,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:11:33,497 INFO L225 Difference]: With dead ends: 69484 [2020-10-21 23:11:33,497 INFO L226 Difference]: Without dead ends: 69451 [2020-10-21 23:11:33,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-21 23:11:34,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69451 states. [2020-10-21 23:11:34,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69451 to 28873. [2020-10-21 23:11:34,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28873 states. [2020-10-21 23:11:35,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28873 states to 28873 states and 153454 transitions. [2020-10-21 23:11:35,036 INFO L78 Accepts]: Start accepts. Automaton has 28873 states and 153454 transitions. Word has length 19 [2020-10-21 23:11:35,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:11:35,036 INFO L481 AbstractCegarLoop]: Abstraction has 28873 states and 153454 transitions. [2020-10-21 23:11:35,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:11:35,037 INFO L276 IsEmpty]: Start isEmpty. Operand 28873 states and 153454 transitions. [2020-10-21 23:11:35,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 23:11:35,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:11:35,037 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:11:35,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:11:35,238 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:11:35,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:11:35,239 INFO L82 PathProgramCache]: Analyzing trace with hash -654401980, now seen corresponding path program 2 times [2020-10-21 23:11:35,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:11:35,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386355788] [2020-10-21 23:11:35,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:11:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:11:35,272 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:11:35,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386355788] [2020-10-21 23:11:35,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:11:35,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:11:35,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214020913] [2020-10-21 23:11:35,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:11:35,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:11:35,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:11:35,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:11:35,273 INFO L87 Difference]: Start difference. First operand 28873 states and 153454 transitions. Second operand 7 states. [2020-10-21 23:11:35,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:11:35,915 INFO L93 Difference]: Finished difference Result 70510 states and 333491 transitions. [2020-10-21 23:11:35,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:11:35,915 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-21 23:11:35,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:11:36,154 INFO L225 Difference]: With dead ends: 70510 [2020-10-21 23:11:36,155 INFO L226 Difference]: Without dead ends: 70477 [2020-10-21 23:11:36,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-21 23:11:36,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70477 states. [2020-10-21 23:11:37,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70477 to 28942. [2020-10-21 23:11:37,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28942 states. [2020-10-21 23:11:38,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28942 states to 28942 states and 153921 transitions. [2020-10-21 23:11:38,558 INFO L78 Accepts]: Start accepts. Automaton has 28942 states and 153921 transitions. Word has length 19 [2020-10-21 23:11:38,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:11:38,558 INFO L481 AbstractCegarLoop]: Abstraction has 28942 states and 153921 transitions. [2020-10-21 23:11:38,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:11:38,558 INFO L276 IsEmpty]: Start isEmpty. Operand 28942 states and 153921 transitions. [2020-10-21 23:11:38,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 23:11:38,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:11:38,559 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:11:38,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2020-10-21 23:11:38,560 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:11:38,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:11:38,560 INFO L82 PathProgramCache]: Analyzing trace with hash -654380404, now seen corresponding path program 2 times [2020-10-21 23:11:38,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:11:38,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101687801] [2020-10-21 23:11:38,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:11:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:11:38,610 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:11:38,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101687801] [2020-10-21 23:11:38,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:11:38,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:11:38,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245620897] [2020-10-21 23:11:38,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:11:38,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:11:38,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:11:38,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:11:38,612 INFO L87 Difference]: Start difference. First operand 28942 states and 153921 transitions. Second operand 7 states. [2020-10-21 23:11:39,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:11:39,159 INFO L93 Difference]: Finished difference Result 70096 states and 331298 transitions. [2020-10-21 23:11:39,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:11:39,160 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-21 23:11:39,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:11:39,363 INFO L225 Difference]: With dead ends: 70096 [2020-10-21 23:11:39,363 INFO L226 Difference]: Without dead ends: 70063 [2020-10-21 23:11:39,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-21 23:11:40,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70063 states. [2020-10-21 23:11:40,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70063 to 29094. [2020-10-21 23:11:40,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29094 states. [2020-10-21 23:11:41,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29094 states to 29094 states and 154883 transitions. [2020-10-21 23:11:41,035 INFO L78 Accepts]: Start accepts. Automaton has 29094 states and 154883 transitions. Word has length 19 [2020-10-21 23:11:41,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:11:41,035 INFO L481 AbstractCegarLoop]: Abstraction has 29094 states and 154883 transitions. [2020-10-21 23:11:41,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:11:41,035 INFO L276 IsEmpty]: Start isEmpty. Operand 29094 states and 154883 transitions. [2020-10-21 23:11:41,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:11:41,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:11:41,036 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:11:41,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2020-10-21 23:11:41,037 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:11:41,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:11:41,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1507492872, now seen corresponding path program 1 times [2020-10-21 23:11:41,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:11:41,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168281299] [2020-10-21 23:11:41,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:11:41,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:11:41,087 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:11:41,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168281299] [2020-10-21 23:11:41,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176580183] [2020-10-21 23:11:41,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:11:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:11:41,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 23:11:41,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:11:41,203 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:11:41,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:11:41,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 23:11:41,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550635889] [2020-10-21 23:11:41,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 23:11:41,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:11:41,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 23:11:41,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 23:11:41,205 INFO L87 Difference]: Start difference. First operand 29094 states and 154883 transitions. Second operand 11 states. [2020-10-21 23:11:42,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:11:42,807 INFO L93 Difference]: Finished difference Result 100731 states and 448596 transitions. [2020-10-21 23:11:42,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:11:42,807 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-21 23:11:42,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:11:43,117 INFO L225 Difference]: With dead ends: 100731 [2020-10-21 23:11:43,117 INFO L226 Difference]: Without dead ends: 100715 [2020-10-21 23:11:43,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 23:11:43,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100715 states. [2020-10-21 23:11:45,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100715 to 28719. [2020-10-21 23:11:45,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28719 states. [2020-10-21 23:11:45,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28719 states to 28719 states and 152760 transitions. [2020-10-21 23:11:45,184 INFO L78 Accepts]: Start accepts. Automaton has 28719 states and 152760 transitions. Word has length 21 [2020-10-21 23:11:45,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:11:45,185 INFO L481 AbstractCegarLoop]: Abstraction has 28719 states and 152760 transitions. [2020-10-21 23:11:45,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 23:11:45,185 INFO L276 IsEmpty]: Start isEmpty. Operand 28719 states and 152760 transitions. [2020-10-21 23:11:45,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:11:45,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:11:45,186 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:11:45,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:11:45,387 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:11:45,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:11:45,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1637414792, now seen corresponding path program 2 times [2020-10-21 23:11:45,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:11:45,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939274293] [2020-10-21 23:11:45,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:11:45,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:11:45,439 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-21 23:11:45,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939274293] [2020-10-21 23:11:45,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723785916] [2020-10-21 23:11:45,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:11:45,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 23:11:45,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:11:45,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 23:11:45,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:11:47,299 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-21 23:11:47,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:11:47,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 23:11:47,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439891423] [2020-10-21 23:11:47,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 23:11:47,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:11:47,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 23:11:47,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 23:11:47,301 INFO L87 Difference]: Start difference. First operand 28719 states and 152760 transitions. Second operand 11 states. [2020-10-21 23:11:48,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:11:48,446 INFO L93 Difference]: Finished difference Result 99876 states and 444348 transitions. [2020-10-21 23:11:48,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:11:48,446 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-21 23:11:48,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:11:48,734 INFO L225 Difference]: With dead ends: 99876 [2020-10-21 23:11:48,734 INFO L226 Difference]: Without dead ends: 99855 [2020-10-21 23:11:48,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 23:11:49,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99855 states. [2020-10-21 23:11:50,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99855 to 28343. [2020-10-21 23:11:50,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28343 states. [2020-10-21 23:11:51,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28343 states to 28343 states and 150639 transitions. [2020-10-21 23:11:51,402 INFO L78 Accepts]: Start accepts. Automaton has 28343 states and 150639 transitions. Word has length 21 [2020-10-21 23:11:51,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:11:51,402 INFO L481 AbstractCegarLoop]: Abstraction has 28343 states and 150639 transitions. [2020-10-21 23:11:51,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 23:11:51,403 INFO L276 IsEmpty]: Start isEmpty. Operand 28343 states and 150639 transitions. [2020-10-21 23:11:51,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:11:51,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:11:51,404 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:11:51,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2020-10-21 23:11:51,604 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:11:51,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:11:51,605 INFO L82 PathProgramCache]: Analyzing trace with hash 430946104, now seen corresponding path program 3 times [2020-10-21 23:11:51,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:11:51,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417830257] [2020-10-21 23:11:51,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:11:51,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:11:51,656 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 23:11:51,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417830257] [2020-10-21 23:11:51,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414153230] [2020-10-21 23:11:51,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:11:51,752 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-21 23:11:51,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:11:51,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 23:11:51,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:11:51,774 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 23:11:51,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:11:51,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 23:11:51,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938411295] [2020-10-21 23:11:51,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 23:11:51,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:11:51,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 23:11:51,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 23:11:51,776 INFO L87 Difference]: Start difference. First operand 28343 states and 150639 transitions. Second operand 11 states. [2020-10-21 23:11:52,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:11:52,935 INFO L93 Difference]: Finished difference Result 100071 states and 445291 transitions. [2020-10-21 23:11:52,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:11:52,935 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-21 23:11:52,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:11:53,235 INFO L225 Difference]: With dead ends: 100071 [2020-10-21 23:11:53,235 INFO L226 Difference]: Without dead ends: 100055 [2020-10-21 23:11:53,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 23:11:54,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100055 states. [2020-10-21 23:11:55,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100055 to 27654. [2020-10-21 23:11:55,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27654 states. [2020-10-21 23:11:56,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27654 states to 27654 states and 147080 transitions. [2020-10-21 23:11:56,101 INFO L78 Accepts]: Start accepts. Automaton has 27654 states and 147080 transitions. Word has length 21 [2020-10-21 23:11:56,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:11:56,101 INFO L481 AbstractCegarLoop]: Abstraction has 27654 states and 147080 transitions. [2020-10-21 23:11:56,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 23:11:56,101 INFO L276 IsEmpty]: Start isEmpty. Operand 27654 states and 147080 transitions. [2020-10-21 23:11:56,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:11:56,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:11:56,102 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:11:56,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:11:56,303 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:11:56,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:11:56,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1514169928, now seen corresponding path program 4 times [2020-10-21 23:11:56,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:11:56,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767511766] [2020-10-21 23:11:56,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:11:56,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:11:56,351 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 23:11:56,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767511766] [2020-10-21 23:11:56,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146033578] [2020-10-21 23:11:56,352 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:11:56,453 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 23:11:56,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:11:56,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 23:11:56,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:11:56,474 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 23:11:56,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:11:56,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 23:11:56,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173311542] [2020-10-21 23:11:56,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 23:11:56,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:11:56,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 23:11:56,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 23:11:56,475 INFO L87 Difference]: Start difference. First operand 27654 states and 147080 transitions. Second operand 11 states. [2020-10-21 23:11:57,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:11:57,587 INFO L93 Difference]: Finished difference Result 99523 states and 442763 transitions. [2020-10-21 23:11:57,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:11:57,587 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-21 23:11:57,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:11:57,887 INFO L225 Difference]: With dead ends: 99523 [2020-10-21 23:11:57,887 INFO L226 Difference]: Without dead ends: 99502 [2020-10-21 23:11:57,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 23:11:58,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99502 states. [2020-10-21 23:12:02,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99502 to 27278. [2020-10-21 23:12:02,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27278 states. [2020-10-21 23:12:02,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27278 states to 27278 states and 144959 transitions. [2020-10-21 23:12:02,673 INFO L78 Accepts]: Start accepts. Automaton has 27278 states and 144959 transitions. Word has length 21 [2020-10-21 23:12:02,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:12:02,674 INFO L481 AbstractCegarLoop]: Abstraction has 27278 states and 144959 transitions. [2020-10-21 23:12:02,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 23:12:02,674 INFO L276 IsEmpty]: Start isEmpty. Operand 27278 states and 144959 transitions. [2020-10-21 23:12:02,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:12:02,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:12:02,675 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:12:02,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2020-10-21 23:12:02,876 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:12:02,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:12:02,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1815083464, now seen corresponding path program 5 times [2020-10-21 23:12:02,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:12:02,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659650107] [2020-10-21 23:12:02,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:12:02,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:12:02,925 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:12:02,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659650107] [2020-10-21 23:12:02,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:12:02,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:12:02,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600368377] [2020-10-21 23:12:02,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:12:02,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:12:02,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:12:02,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:12:02,928 INFO L87 Difference]: Start difference. First operand 27278 states and 144959 transitions. Second operand 9 states. [2020-10-21 23:12:04,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:12:04,051 INFO L93 Difference]: Finished difference Result 99710 states and 443686 transitions. [2020-10-21 23:12:04,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:12:04,051 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 23:12:04,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:12:04,339 INFO L225 Difference]: With dead ends: 99710 [2020-10-21 23:12:04,339 INFO L226 Difference]: Without dead ends: 99694 [2020-10-21 23:12:04,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 23:12:05,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99694 states. [2020-10-21 23:12:06,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99694 to 26597. [2020-10-21 23:12:06,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26597 states. [2020-10-21 23:12:07,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26597 states to 26597 states and 141420 transitions. [2020-10-21 23:12:07,013 INFO L78 Accepts]: Start accepts. Automaton has 26597 states and 141420 transitions. Word has length 21 [2020-10-21 23:12:07,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:12:07,013 INFO L481 AbstractCegarLoop]: Abstraction has 26597 states and 141420 transitions. [2020-10-21 23:12:07,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:12:07,013 INFO L276 IsEmpty]: Start isEmpty. Operand 26597 states and 141420 transitions. [2020-10-21 23:12:07,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:12:07,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:12:07,014 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:12:07,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2020-10-21 23:12:07,014 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:12:07,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:12:07,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1794370504, now seen corresponding path program 6 times [2020-10-21 23:12:07,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:12:07,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216075946] [2020-10-21 23:12:07,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:12:07,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:12:07,067 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:12:07,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216075946] [2020-10-21 23:12:07,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:12:07,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:12:07,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645578192] [2020-10-21 23:12:07,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:12:07,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:12:07,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:12:07,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:12:07,069 INFO L87 Difference]: Start difference. First operand 26597 states and 141420 transitions. Second operand 9 states. [2020-10-21 23:12:08,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:12:08,226 INFO L93 Difference]: Finished difference Result 98863 states and 439458 transitions. [2020-10-21 23:12:08,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:12:08,227 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 23:12:08,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:12:08,555 INFO L225 Difference]: With dead ends: 98863 [2020-10-21 23:12:08,555 INFO L226 Difference]: Without dead ends: 98841 [2020-10-21 23:12:08,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 23:12:09,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98841 states. [2020-10-21 23:12:11,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98841 to 25744. [2020-10-21 23:12:11,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25744 states. [2020-10-21 23:12:11,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25744 states to 25744 states and 137181 transitions. [2020-10-21 23:12:11,224 INFO L78 Accepts]: Start accepts. Automaton has 25744 states and 137181 transitions. Word has length 21 [2020-10-21 23:12:11,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:12:11,224 INFO L481 AbstractCegarLoop]: Abstraction has 25744 states and 137181 transitions. [2020-10-21 23:12:11,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:12:11,224 INFO L276 IsEmpty]: Start isEmpty. Operand 25744 states and 137181 transitions. [2020-10-21 23:12:11,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:12:11,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:12:11,225 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:12:11,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2020-10-21 23:12:11,226 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:12:11,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:12:11,226 INFO L82 PathProgramCache]: Analyzing trace with hash -849037537, now seen corresponding path program 1 times [2020-10-21 23:12:11,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:12:11,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388127403] [2020-10-21 23:12:11,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:12:11,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:12:11,243 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 23:12:11,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388127403] [2020-10-21 23:12:11,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:12:11,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:12:11,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545718106] [2020-10-21 23:12:11,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:12:11,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:12:11,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:12:11,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:12:11,245 INFO L87 Difference]: Start difference. First operand 25744 states and 137181 transitions. Second operand 5 states. [2020-10-21 23:12:11,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:12:11,566 INFO L93 Difference]: Finished difference Result 46463 states and 236107 transitions. [2020-10-21 23:12:11,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:12:11,567 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-21 23:12:11,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:12:11,714 INFO L225 Difference]: With dead ends: 46463 [2020-10-21 23:12:11,715 INFO L226 Difference]: Without dead ends: 46417 [2020-10-21 23:12:11,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:12:12,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46417 states. [2020-10-21 23:12:12,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46417 to 31960. [2020-10-21 23:12:12,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31960 states. [2020-10-21 23:12:13,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31960 states to 31960 states and 171209 transitions. [2020-10-21 23:12:13,065 INFO L78 Accepts]: Start accepts. Automaton has 31960 states and 171209 transitions. Word has length 21 [2020-10-21 23:12:13,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:12:13,065 INFO L481 AbstractCegarLoop]: Abstraction has 31960 states and 171209 transitions. [2020-10-21 23:12:13,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:12:13,065 INFO L276 IsEmpty]: Start isEmpty. Operand 31960 states and 171209 transitions. [2020-10-21 23:12:13,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 23:12:13,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:12:13,066 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:12:13,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2020-10-21 23:12:13,067 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:12:13,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:12:13,067 INFO L82 PathProgramCache]: Analyzing trace with hash -631544749, now seen corresponding path program 1 times [2020-10-21 23:12:13,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:12:13,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490840748] [2020-10-21 23:12:13,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:12:13,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:12:13,104 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-21 23:12:13,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490840748] [2020-10-21 23:12:13,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706804137] [2020-10-21 23:12:13,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:12:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:12:13,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-21 23:12:13,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:12:13,227 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-21 23:12:13,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:12:13,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-21 23:12:13,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772072556] [2020-10-21 23:12:13,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:12:13,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:12:13,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:12:13,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:12:13,229 INFO L87 Difference]: Start difference. First operand 31960 states and 171209 transitions. Second operand 9 states. [2020-10-21 23:12:14,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:12:14,388 INFO L93 Difference]: Finished difference Result 75380 states and 361389 transitions. [2020-10-21 23:12:14,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:12:14,389 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-21 23:12:14,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:12:14,643 INFO L225 Difference]: With dead ends: 75380 [2020-10-21 23:12:14,643 INFO L226 Difference]: Without dead ends: 75344 [2020-10-21 23:12:14,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-21 23:12:15,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75344 states. [2020-10-21 23:12:16,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75344 to 32974. [2020-10-21 23:12:16,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32974 states. [2020-10-21 23:12:16,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32974 states to 32974 states and 176363 transitions. [2020-10-21 23:12:16,431 INFO L78 Accepts]: Start accepts. Automaton has 32974 states and 176363 transitions. Word has length 23 [2020-10-21 23:12:16,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:12:16,432 INFO L481 AbstractCegarLoop]: Abstraction has 32974 states and 176363 transitions. [2020-10-21 23:12:16,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:12:16,432 INFO L276 IsEmpty]: Start isEmpty. Operand 32974 states and 176363 transitions. [2020-10-21 23:12:16,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 23:12:16,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:12:16,433 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:12:16,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:12:16,634 INFO L429 AbstractCegarLoop]: === Iteration 19 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:12:16,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:12:16,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1821918027, now seen corresponding path program 1 times [2020-10-21 23:12:16,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:12:16,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590640651] [2020-10-21 23:12:16,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:12:16,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:12:16,670 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-21 23:12:16,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590640651] [2020-10-21 23:12:16,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807647528] [2020-10-21 23:12:16,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:12:16,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:12:16,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-21 23:12:16,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:12:16,809 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-21 23:12:16,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:12:16,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-21 23:12:16,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477655850] [2020-10-21 23:12:16,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:12:16,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:12:16,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:12:16,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:12:16,810 INFO L87 Difference]: Start difference. First operand 32974 states and 176363 transitions. Second operand 9 states. [2020-10-21 23:12:17,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:12:17,471 INFO L93 Difference]: Finished difference Result 79487 states and 381757 transitions. [2020-10-21 23:12:17,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:12:17,472 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-21 23:12:17,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:12:18,344 INFO L225 Difference]: With dead ends: 79487 [2020-10-21 23:12:18,344 INFO L226 Difference]: Without dead ends: 79445 [2020-10-21 23:12:18,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-21 23:12:19,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79445 states. [2020-10-21 23:12:20,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79445 to 33981. [2020-10-21 23:12:20,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33981 states. [2020-10-21 23:12:20,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33981 states to 33981 states and 181710 transitions. [2020-10-21 23:12:20,158 INFO L78 Accepts]: Start accepts. Automaton has 33981 states and 181710 transitions. Word has length 23 [2020-10-21 23:12:20,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:12:20,158 INFO L481 AbstractCegarLoop]: Abstraction has 33981 states and 181710 transitions. [2020-10-21 23:12:20,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:12:20,158 INFO L276 IsEmpty]: Start isEmpty. Operand 33981 states and 181710 transitions. [2020-10-21 23:12:20,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 23:12:20,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:12:20,160 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:12:20,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,37 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:12:20,361 INFO L429 AbstractCegarLoop]: === Iteration 20 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:12:20,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:12:20,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1140939329, now seen corresponding path program 1 times [2020-10-21 23:12:20,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:12:20,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594003428] [2020-10-21 23:12:20,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:12:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:12:20,400 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:12:20,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594003428] [2020-10-21 23:12:20,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223280669] [2020-10-21 23:12:20,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:12:20,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:12:20,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-21 23:12:20,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:12:20,513 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:12:20,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:12:20,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-21 23:12:20,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544122469] [2020-10-21 23:12:20,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:12:20,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:12:20,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:12:20,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:12:20,520 INFO L87 Difference]: Start difference. First operand 33981 states and 181710 transitions. Second operand 9 states. [2020-10-21 23:12:21,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:12:21,202 INFO L93 Difference]: Finished difference Result 82728 states and 398553 transitions. [2020-10-21 23:12:21,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:12:21,202 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-21 23:12:21,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:12:21,469 INFO L225 Difference]: With dead ends: 82728 [2020-10-21 23:12:21,469 INFO L226 Difference]: Without dead ends: 82673 [2020-10-21 23:12:21,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-21 23:12:22,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82673 states. [2020-10-21 23:12:23,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82673 to 34821. [2020-10-21 23:12:23,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34821 states. [2020-10-21 23:12:23,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34821 states to 34821 states and 186422 transitions. [2020-10-21 23:12:23,975 INFO L78 Accepts]: Start accepts. Automaton has 34821 states and 186422 transitions. Word has length 23 [2020-10-21 23:12:23,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:12:23,976 INFO L481 AbstractCegarLoop]: Abstraction has 34821 states and 186422 transitions. [2020-10-21 23:12:23,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:12:23,976 INFO L276 IsEmpty]: Start isEmpty. Operand 34821 states and 186422 transitions. [2020-10-21 23:12:23,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 23:12:23,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:12:23,978 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:12:24,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable94 [2020-10-21 23:12:24,179 INFO L429 AbstractCegarLoop]: === Iteration 21 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:12:24,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:12:24,179 INFO L82 PathProgramCache]: Analyzing trace with hash 118685707, now seen corresponding path program 2 times [2020-10-21 23:12:24,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:12:24,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357692561] [2020-10-21 23:12:24,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:12:24,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:12:24,215 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 23:12:24,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357692561] [2020-10-21 23:12:24,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:12:24,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:12:24,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294525198] [2020-10-21 23:12:24,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:12:24,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:12:24,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:12:24,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:12:24,218 INFO L87 Difference]: Start difference. First operand 34821 states and 186422 transitions. Second operand 7 states. [2020-10-21 23:12:24,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:12:24,877 INFO L93 Difference]: Finished difference Result 83507 states and 402693 transitions. [2020-10-21 23:12:24,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:12:24,878 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-21 23:12:24,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:12:25,146 INFO L225 Difference]: With dead ends: 83507 [2020-10-21 23:12:25,146 INFO L226 Difference]: Without dead ends: 83452 [2020-10-21 23:12:25,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-21 23:12:26,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83452 states. [2020-10-21 23:12:27,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83452 to 35694. [2020-10-21 23:12:27,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35694 states. [2020-10-21 23:12:27,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35694 states to 35694 states and 191145 transitions. [2020-10-21 23:12:27,701 INFO L78 Accepts]: Start accepts. Automaton has 35694 states and 191145 transitions. Word has length 23 [2020-10-21 23:12:27,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:12:27,701 INFO L481 AbstractCegarLoop]: Abstraction has 35694 states and 191145 transitions. [2020-10-21 23:12:27,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:12:27,702 INFO L276 IsEmpty]: Start isEmpty. Operand 35694 states and 191145 transitions. [2020-10-21 23:12:27,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 23:12:27,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:12:27,704 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:12:27,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2020-10-21 23:12:27,704 INFO L429 AbstractCegarLoop]: === Iteration 22 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:12:27,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:12:27,704 INFO L82 PathProgramCache]: Analyzing trace with hash 118707283, now seen corresponding path program 2 times [2020-10-21 23:12:27,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:12:27,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624086235] [2020-10-21 23:12:27,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:12:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:12:27,740 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 23:12:27,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624086235] [2020-10-21 23:12:27,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:12:27,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:12:27,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073157981] [2020-10-21 23:12:27,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:12:27,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:12:27,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:12:27,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:12:27,742 INFO L87 Difference]: Start difference. First operand 35694 states and 191145 transitions. Second operand 7 states. [2020-10-21 23:12:28,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:12:28,470 INFO L93 Difference]: Finished difference Result 83543 states and 402494 transitions. [2020-10-21 23:12:28,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:12:28,471 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-21 23:12:28,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:12:28,765 INFO L225 Difference]: With dead ends: 83543 [2020-10-21 23:12:28,766 INFO L226 Difference]: Without dead ends: 83488 [2020-10-21 23:12:28,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-21 23:12:29,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83488 states. [2020-10-21 23:12:31,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83488 to 36306. [2020-10-21 23:12:31,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36306 states. [2020-10-21 23:12:31,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36306 states to 36306 states and 194552 transitions. [2020-10-21 23:12:31,267 INFO L78 Accepts]: Start accepts. Automaton has 36306 states and 194552 transitions. Word has length 23 [2020-10-21 23:12:31,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:12:31,267 INFO L481 AbstractCegarLoop]: Abstraction has 36306 states and 194552 transitions. [2020-10-21 23:12:31,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:12:31,267 INFO L276 IsEmpty]: Start isEmpty. Operand 36306 states and 194552 transitions. [2020-10-21 23:12:31,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 23:12:31,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:12:31,269 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:12:31,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2020-10-21 23:12:31,269 INFO L429 AbstractCegarLoop]: === Iteration 23 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:12:31,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:12:31,270 INFO L82 PathProgramCache]: Analyzing trace with hash 118697983, now seen corresponding path program 2 times [2020-10-21 23:12:31,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:12:31,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968649588] [2020-10-21 23:12:31,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:12:31,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:12:31,303 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 23:12:31,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968649588] [2020-10-21 23:12:31,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:12:31,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:12:31,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562369927] [2020-10-21 23:12:31,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:12:31,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:12:31,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:12:31,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:12:31,305 INFO L87 Difference]: Start difference. First operand 36306 states and 194552 transitions. Second operand 7 states. [2020-10-21 23:12:31,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:12:31,949 INFO L93 Difference]: Finished difference Result 83898 states and 404104 transitions. [2020-10-21 23:12:31,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:12:31,949 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-21 23:12:31,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:12:32,213 INFO L225 Difference]: With dead ends: 83898 [2020-10-21 23:12:32,213 INFO L226 Difference]: Without dead ends: 83843 [2020-10-21 23:12:32,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-21 23:12:32,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83843 states. [2020-10-21 23:12:34,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83843 to 37062. [2020-10-21 23:12:34,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37062 states. [2020-10-21 23:12:34,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37062 states to 37062 states and 198528 transitions. [2020-10-21 23:12:34,789 INFO L78 Accepts]: Start accepts. Automaton has 37062 states and 198528 transitions. Word has length 23 [2020-10-21 23:12:34,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:12:34,789 INFO L481 AbstractCegarLoop]: Abstraction has 37062 states and 198528 transitions. [2020-10-21 23:12:34,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:12:34,789 INFO L276 IsEmpty]: Start isEmpty. Operand 37062 states and 198528 transitions. [2020-10-21 23:12:34,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:12:34,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:12:34,792 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:12:34,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2020-10-21 23:12:34,792 INFO L429 AbstractCegarLoop]: === Iteration 24 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:12:34,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:12:34,793 INFO L82 PathProgramCache]: Analyzing trace with hash 379089791, now seen corresponding path program 1 times [2020-10-21 23:12:34,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:12:34,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356577372] [2020-10-21 23:12:34,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:12:34,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:12:34,840 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-21 23:12:34,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356577372] [2020-10-21 23:12:34,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952210119] [2020-10-21 23:12:34,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:12:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:12:34,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 23:12:34,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:12:34,959 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-21 23:12:34,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:12:34,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 23:12:34,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624309346] [2020-10-21 23:12:34,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 23:12:34,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:12:34,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 23:12:34,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 23:12:34,961 INFO L87 Difference]: Start difference. First operand 37062 states and 198528 transitions. Second operand 11 states. [2020-10-21 23:12:36,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:12:36,209 INFO L93 Difference]: Finished difference Result 122892 states and 561130 transitions. [2020-10-21 23:12:36,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:12:36,210 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-21 23:12:36,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:12:36,577 INFO L225 Difference]: With dead ends: 122892 [2020-10-21 23:12:36,578 INFO L226 Difference]: Without dead ends: 122862 [2020-10-21 23:12:36,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 23:12:38,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122862 states. [2020-10-21 23:12:39,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122862 to 36727. [2020-10-21 23:12:39,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36727 states. [2020-10-21 23:12:39,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36727 states to 36727 states and 196466 transitions. [2020-10-21 23:12:39,867 INFO L78 Accepts]: Start accepts. Automaton has 36727 states and 196466 transitions. Word has length 25 [2020-10-21 23:12:39,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:12:39,867 INFO L481 AbstractCegarLoop]: Abstraction has 36727 states and 196466 transitions. [2020-10-21 23:12:39,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 23:12:39,867 INFO L276 IsEmpty]: Start isEmpty. Operand 36727 states and 196466 transitions. [2020-10-21 23:12:39,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:12:39,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:12:39,870 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:12:40,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:12:40,071 INFO L429 AbstractCegarLoop]: === Iteration 25 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:12:40,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:12:40,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1711199731, now seen corresponding path program 1 times [2020-10-21 23:12:40,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:12:40,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975027296] [2020-10-21 23:12:40,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:12:40,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:12:40,124 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-21 23:12:40,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975027296] [2020-10-21 23:12:40,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658095283] [2020-10-21 23:12:40,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:12:40,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:12:40,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 23:12:40,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:12:40,243 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-21 23:12:40,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:12:40,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 23:12:40,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169515392] [2020-10-21 23:12:40,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 23:12:40,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:12:40,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 23:12:40,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 23:12:40,245 INFO L87 Difference]: Start difference. First operand 36727 states and 196466 transitions. Second operand 11 states. [2020-10-21 23:12:41,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:12:41,942 INFO L93 Difference]: Finished difference Result 121590 states and 554657 transitions. [2020-10-21 23:12:41,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:12:41,943 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-21 23:12:41,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:12:42,308 INFO L225 Difference]: With dead ends: 121590 [2020-10-21 23:12:42,308 INFO L226 Difference]: Without dead ends: 121560 [2020-10-21 23:12:42,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 23:12:43,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121560 states. [2020-10-21 23:12:48,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121560 to 36513. [2020-10-21 23:12:48,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36513 states. [2020-10-21 23:12:48,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36513 states to 36513 states and 195090 transitions. [2020-10-21 23:12:48,368 INFO L78 Accepts]: Start accepts. Automaton has 36513 states and 195090 transitions. Word has length 25 [2020-10-21 23:12:48,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:12:48,368 INFO L481 AbstractCegarLoop]: Abstraction has 36513 states and 195090 transitions. [2020-10-21 23:12:48,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 23:12:48,369 INFO L276 IsEmpty]: Start isEmpty. Operand 36513 states and 195090 transitions. [2020-10-21 23:12:48,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:12:48,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:12:48,374 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:12:48,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2020-10-21 23:12:48,575 INFO L429 AbstractCegarLoop]: === Iteration 26 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:12:48,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:12:48,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1324142529, now seen corresponding path program 2 times [2020-10-21 23:12:48,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:12:48,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183637615] [2020-10-21 23:12:48,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:12:48,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:12:48,626 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-21 23:12:48,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183637615] [2020-10-21 23:12:48,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034698367] [2020-10-21 23:12:48,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:12:48,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 23:12:48,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:12:48,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 23:12:48,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:12:48,744 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-21 23:12:48,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:12:48,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 23:12:48,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507864964] [2020-10-21 23:12:48,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 23:12:48,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:12:48,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 23:12:48,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 23:12:48,745 INFO L87 Difference]: Start difference. First operand 36513 states and 195090 transitions. Second operand 11 states. [2020-10-21 23:12:50,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:12:50,007 INFO L93 Difference]: Finished difference Result 120395 states and 548664 transitions. [2020-10-21 23:12:50,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:12:50,008 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-21 23:12:50,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:12:50,391 INFO L225 Difference]: With dead ends: 120395 [2020-10-21 23:12:50,392 INFO L226 Difference]: Without dead ends: 120362 [2020-10-21 23:12:50,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 23:12:51,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120362 states. [2020-10-21 23:12:53,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120362 to 36444. [2020-10-21 23:12:53,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36444 states. [2020-10-21 23:12:53,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36444 states to 36444 states and 194571 transitions. [2020-10-21 23:12:53,731 INFO L78 Accepts]: Start accepts. Automaton has 36444 states and 194571 transitions. Word has length 25 [2020-10-21 23:12:53,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:12:53,732 INFO L481 AbstractCegarLoop]: Abstraction has 36444 states and 194571 transitions. [2020-10-21 23:12:53,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 23:12:53,732 INFO L276 IsEmpty]: Start isEmpty. Operand 36444 states and 194571 transitions. [2020-10-21 23:12:53,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:12:53,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:12:53,734 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:12:53,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:12:53,935 INFO L429 AbstractCegarLoop]: === Iteration 27 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:12:53,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:12:53,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1324130253, now seen corresponding path program 2 times [2020-10-21 23:12:53,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:12:53,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785545848] [2020-10-21 23:12:53,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:12:53,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:12:53,987 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-21 23:12:53,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785545848] [2020-10-21 23:12:53,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627485112] [2020-10-21 23:12:53,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:12:54,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 23:12:54,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:12:54,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 23:12:54,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:12:54,113 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-21 23:12:54,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:12:54,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 23:12:54,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834208510] [2020-10-21 23:12:54,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 23:12:54,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:12:54,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 23:12:54,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 23:12:54,115 INFO L87 Difference]: Start difference. First operand 36444 states and 194571 transitions. Second operand 11 states. [2020-10-21 23:12:55,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:12:55,416 INFO L93 Difference]: Finished difference Result 119346 states and 543724 transitions. [2020-10-21 23:12:55,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:12:55,417 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-21 23:12:55,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:12:55,803 INFO L225 Difference]: With dead ends: 119346 [2020-10-21 23:12:55,804 INFO L226 Difference]: Without dead ends: 119313 [2020-10-21 23:12:55,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 23:12:57,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119313 states. [2020-10-21 23:12:58,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119313 to 36040. [2020-10-21 23:12:58,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36040 states. [2020-10-21 23:12:59,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36040 states to 36040 states and 192287 transitions. [2020-10-21 23:12:59,003 INFO L78 Accepts]: Start accepts. Automaton has 36040 states and 192287 transitions. Word has length 25 [2020-10-21 23:12:59,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:12:59,004 INFO L481 AbstractCegarLoop]: Abstraction has 36040 states and 192287 transitions. [2020-10-21 23:12:59,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 23:12:59,004 INFO L276 IsEmpty]: Start isEmpty. Operand 36040 states and 192287 transitions. [2020-10-21 23:12:59,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:12:59,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:12:59,006 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:12:59,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2020-10-21 23:12:59,213 INFO L429 AbstractCegarLoop]: === Iteration 28 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:12:59,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:12:59,213 INFO L82 PathProgramCache]: Analyzing trace with hash -132968769, now seen corresponding path program 3 times [2020-10-21 23:12:59,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:12:59,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325168155] [2020-10-21 23:12:59,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:12:59,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:12:59,265 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-21 23:12:59,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325168155] [2020-10-21 23:12:59,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113228000] [2020-10-21 23:12:59,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:12:59,364 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-21 23:12:59,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:12:59,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 23:12:59,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:12:59,384 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-21 23:12:59,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:12:59,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 23:12:59,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757295072] [2020-10-21 23:12:59,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 23:12:59,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:12:59,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 23:12:59,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 23:12:59,386 INFO L87 Difference]: Start difference. First operand 36040 states and 192287 transitions. Second operand 11 states. [2020-10-21 23:13:01,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:13:01,133 INFO L93 Difference]: Finished difference Result 119770 states and 545635 transitions. [2020-10-21 23:13:01,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:13:01,133 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-21 23:13:01,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:13:01,503 INFO L225 Difference]: With dead ends: 119770 [2020-10-21 23:13:01,504 INFO L226 Difference]: Without dead ends: 119740 [2020-10-21 23:13:01,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 23:13:02,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119740 states. [2020-10-21 23:13:07,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119740 to 35471. [2020-10-21 23:13:07,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35471 states. [2020-10-21 23:13:07,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35471 states to 35471 states and 189238 transitions. [2020-10-21 23:13:07,566 INFO L78 Accepts]: Start accepts. Automaton has 35471 states and 189238 transitions. Word has length 25 [2020-10-21 23:13:07,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:13:07,567 INFO L481 AbstractCegarLoop]: Abstraction has 35471 states and 189238 transitions. [2020-10-21 23:13:07,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 23:13:07,567 INFO L276 IsEmpty]: Start isEmpty. Operand 35471 states and 189238 transitions. [2020-10-21 23:13:07,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:13:07,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:13:07,569 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:13:07,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2020-10-21 23:13:07,776 INFO L429 AbstractCegarLoop]: === Iteration 29 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:13:07,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:13:07,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1551881963, now seen corresponding path program 1 times [2020-10-21 23:13:07,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:13:07,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732164170] [2020-10-21 23:13:07,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:13:07,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:13:07,827 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 23:13:07,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732164170] [2020-10-21 23:13:07,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714008251] [2020-10-21 23:13:07,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:13:07,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:13:07,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 23:13:07,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:13:07,946 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 23:13:07,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:13:07,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 23:13:07,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920245890] [2020-10-21 23:13:07,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 23:13:07,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:13:07,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 23:13:07,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 23:13:07,950 INFO L87 Difference]: Start difference. First operand 35471 states and 189238 transitions. Second operand 11 states. [2020-10-21 23:13:09,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:13:09,199 INFO L93 Difference]: Finished difference Result 121131 states and 553230 transitions. [2020-10-21 23:13:09,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:13:09,200 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-21 23:13:09,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:13:09,594 INFO L225 Difference]: With dead ends: 121131 [2020-10-21 23:13:09,594 INFO L226 Difference]: Without dead ends: 121101 [2020-10-21 23:13:09,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 23:13:10,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121101 states. [2020-10-21 23:13:12,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121101 to 35374. [2020-10-21 23:13:12,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35374 states. [2020-10-21 23:13:12,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35374 states to 35374 states and 188534 transitions. [2020-10-21 23:13:12,722 INFO L78 Accepts]: Start accepts. Automaton has 35374 states and 188534 transitions. Word has length 25 [2020-10-21 23:13:12,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:13:12,722 INFO L481 AbstractCegarLoop]: Abstraction has 35374 states and 188534 transitions. [2020-10-21 23:13:12,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 23:13:12,723 INFO L276 IsEmpty]: Start isEmpty. Operand 35374 states and 188534 transitions. [2020-10-21 23:13:12,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:13:12,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:13:12,725 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:13:12,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2020-10-21 23:13:12,926 INFO L429 AbstractCegarLoop]: === Iteration 30 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:13:12,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:13:12,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1483438721, now seen corresponding path program 4 times [2020-10-21 23:13:12,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:13:12,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924723386] [2020-10-21 23:13:12,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:13:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:13:12,978 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-21 23:13:12,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924723386] [2020-10-21 23:13:12,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432182172] [2020-10-21 23:13:12,978 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:13:13,071 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 23:13:13,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:13:13,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 23:13:13,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:13:13,092 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-21 23:13:13,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:13:13,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 23:13:13,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8693322] [2020-10-21 23:13:13,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 23:13:13,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:13:13,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 23:13:13,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 23:13:13,094 INFO L87 Difference]: Start difference. First operand 35374 states and 188534 transitions. Second operand 11 states. [2020-10-21 23:13:14,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:13:14,376 INFO L93 Difference]: Finished difference Result 119615 states and 544863 transitions. [2020-10-21 23:13:14,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:13:14,377 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-21 23:13:14,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:13:14,727 INFO L225 Difference]: With dead ends: 119615 [2020-10-21 23:13:14,727 INFO L226 Difference]: Without dead ends: 119582 [2020-10-21 23:13:14,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 23:13:16,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119582 states. [2020-10-21 23:13:17,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119582 to 35305. [2020-10-21 23:13:17,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35305 states. [2020-10-21 23:13:17,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35305 states to 35305 states and 188015 transitions. [2020-10-21 23:13:17,940 INFO L78 Accepts]: Start accepts. Automaton has 35305 states and 188015 transitions. Word has length 25 [2020-10-21 23:13:17,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:13:17,940 INFO L481 AbstractCegarLoop]: Abstraction has 35305 states and 188015 transitions. [2020-10-21 23:13:17,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 23:13:17,940 INFO L276 IsEmpty]: Start isEmpty. Operand 35305 states and 188015 transitions. [2020-10-21 23:13:17,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:13:17,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:13:17,943 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:13:18,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2020-10-21 23:13:18,144 INFO L429 AbstractCegarLoop]: === Iteration 31 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:13:18,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:13:18,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1483448021, now seen corresponding path program 2 times [2020-10-21 23:13:18,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:13:18,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983038238] [2020-10-21 23:13:18,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:13:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:13:18,198 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-21 23:13:18,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983038238] [2020-10-21 23:13:18,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904196897] [2020-10-21 23:13:18,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:13:18,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 23:13:18,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:13:18,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 23:13:18,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:13:18,364 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-21 23:13:18,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:13:18,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 23:13:18,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104723079] [2020-10-21 23:13:18,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 23:13:18,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:13:18,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 23:13:18,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 23:13:18,369 INFO L87 Difference]: Start difference. First operand 35305 states and 188015 transitions. Second operand 11 states. [2020-10-21 23:13:20,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:13:20,240 INFO L93 Difference]: Finished difference Result 119145 states and 543472 transitions. [2020-10-21 23:13:20,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:13:20,241 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-21 23:13:20,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:13:20,632 INFO L225 Difference]: With dead ends: 119145 [2020-10-21 23:13:20,633 INFO L226 Difference]: Without dead ends: 119105 [2020-10-21 23:13:20,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 23:13:21,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119105 states. [2020-10-21 23:13:22,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119105 to 34815. [2020-10-21 23:13:22,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34815 states. [2020-10-21 23:13:23,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34815 states to 34815 states and 185346 transitions. [2020-10-21 23:13:23,107 INFO L78 Accepts]: Start accepts. Automaton has 34815 states and 185346 transitions. Word has length 25 [2020-10-21 23:13:23,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:13:23,107 INFO L481 AbstractCegarLoop]: Abstraction has 34815 states and 185346 transitions. [2020-10-21 23:13:23,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 23:13:23,107 INFO L276 IsEmpty]: Start isEmpty. Operand 34815 states and 185346 transitions. [2020-10-21 23:13:23,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:13:23,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:13:23,111 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:13:23,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2020-10-21 23:13:23,318 INFO L429 AbstractCegarLoop]: === Iteration 32 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:13:23,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:13:23,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1148845205, now seen corresponding path program 3 times [2020-10-21 23:13:23,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:13:23,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720984759] [2020-10-21 23:13:23,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:13:23,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:13:23,372 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:13:23,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720984759] [2020-10-21 23:13:23,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622701102] [2020-10-21 23:13:23,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:13:23,466 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-21 23:13:23,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:13:23,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 23:13:23,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:13:23,488 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:13:23,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:13:23,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 23:13:23,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38934489] [2020-10-21 23:13:23,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 23:13:23,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:13:23,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 23:13:23,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 23:13:23,490 INFO L87 Difference]: Start difference. First operand 34815 states and 185346 transitions. Second operand 11 states. [2020-10-21 23:13:24,196 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-10-21 23:13:25,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:13:25,058 INFO L93 Difference]: Finished difference Result 118955 states and 542533 transitions. [2020-10-21 23:13:25,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:13:25,059 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-21 23:13:25,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:13:25,459 INFO L225 Difference]: With dead ends: 118955 [2020-10-21 23:13:25,459 INFO L226 Difference]: Without dead ends: 118925 [2020-10-21 23:13:25,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 23:13:26,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118925 states. [2020-10-21 23:13:28,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118925 to 34363. [2020-10-21 23:13:28,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34363 states. [2020-10-21 23:13:28,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34363 states to 34363 states and 182968 transitions. [2020-10-21 23:13:28,581 INFO L78 Accepts]: Start accepts. Automaton has 34363 states and 182968 transitions. Word has length 25 [2020-10-21 23:13:28,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:13:28,581 INFO L481 AbstractCegarLoop]: Abstraction has 34363 states and 182968 transitions. [2020-10-21 23:13:28,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 23:13:28,581 INFO L276 IsEmpty]: Start isEmpty. Operand 34363 states and 182968 transitions. [2020-10-21 23:13:28,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:13:28,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:13:28,584 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:13:28,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2020-10-21 23:13:28,785 INFO L429 AbstractCegarLoop]: === Iteration 33 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:13:28,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:13:28,785 INFO L82 PathProgramCache]: Analyzing trace with hash 666370483, now seen corresponding path program 3 times [2020-10-21 23:13:28,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:13:28,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713151927] [2020-10-21 23:13:28,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:13:28,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:13:28,838 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:13:28,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713151927] [2020-10-21 23:13:28,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852024006] [2020-10-21 23:13:28,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:13:28,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-21 23:13:28,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:13:28,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 23:13:28,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:13:28,966 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:13:28,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:13:28,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 23:13:28,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741010374] [2020-10-21 23:13:28,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 23:13:28,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:13:28,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 23:13:28,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 23:13:28,967 INFO L87 Difference]: Start difference. First operand 34363 states and 182968 transitions. Second operand 11 states. [2020-10-21 23:13:30,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:13:30,301 INFO L93 Difference]: Finished difference Result 117996 states and 537739 transitions. [2020-10-21 23:13:30,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:13:30,301 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-21 23:13:30,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:13:30,667 INFO L225 Difference]: With dead ends: 117996 [2020-10-21 23:13:30,667 INFO L226 Difference]: Without dead ends: 117966 [2020-10-21 23:13:30,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 23:13:31,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117966 states. [2020-10-21 23:13:36,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117966 to 34024. [2020-10-21 23:13:36,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34024 states. [2020-10-21 23:13:36,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34024 states to 34024 states and 181250 transitions. [2020-10-21 23:13:36,496 INFO L78 Accepts]: Start accepts. Automaton has 34024 states and 181250 transitions. Word has length 25 [2020-10-21 23:13:36,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:13:36,497 INFO L481 AbstractCegarLoop]: Abstraction has 34024 states and 181250 transitions. [2020-10-21 23:13:36,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 23:13:36,497 INFO L276 IsEmpty]: Start isEmpty. Operand 34024 states and 181250 transitions. [2020-10-21 23:13:36,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:13:36,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:13:36,499 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:13:36,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:13:36,700 INFO L429 AbstractCegarLoop]: === Iteration 34 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:13:36,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:13:36,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1226062165, now seen corresponding path program 4 times [2020-10-21 23:13:36,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:13:36,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450721883] [2020-10-21 23:13:36,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:13:36,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:13:36,753 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:13:36,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450721883] [2020-10-21 23:13:36,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968609472] [2020-10-21 23:13:36,754 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:13:36,848 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 23:13:36,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:13:36,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 23:13:36,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:13:36,867 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:13:36,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:13:36,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 23:13:36,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48088583] [2020-10-21 23:13:36,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 23:13:36,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:13:36,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 23:13:36,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 23:13:36,869 INFO L87 Difference]: Start difference. First operand 34024 states and 181250 transitions. Second operand 11 states. [2020-10-21 23:13:38,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:13:38,140 INFO L93 Difference]: Finished difference Result 119076 states and 543105 transitions. [2020-10-21 23:13:38,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:13:38,140 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-21 23:13:38,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:13:38,519 INFO L225 Difference]: With dead ends: 119076 [2020-10-21 23:13:38,519 INFO L226 Difference]: Without dead ends: 119036 [2020-10-21 23:13:38,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 23:13:40,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119036 states. [2020-10-21 23:13:41,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119036 to 33873. [2020-10-21 23:13:41,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33873 states. [2020-10-21 23:13:41,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33873 states to 33873 states and 180354 transitions. [2020-10-21 23:13:41,589 INFO L78 Accepts]: Start accepts. Automaton has 33873 states and 180354 transitions. Word has length 25 [2020-10-21 23:13:41,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:13:41,589 INFO L481 AbstractCegarLoop]: Abstraction has 33873 states and 180354 transitions. [2020-10-21 23:13:41,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 23:13:41,589 INFO L276 IsEmpty]: Start isEmpty. Operand 33873 states and 180354 transitions. [2020-10-21 23:13:41,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:13:41,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:13:41,591 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:13:41,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:13:41,792 INFO L429 AbstractCegarLoop]: === Iteration 35 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:13:41,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:13:41,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1226040589, now seen corresponding path program 4 times [2020-10-21 23:13:41,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:13:41,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460858559] [2020-10-21 23:13:41,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:13:41,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:13:41,843 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:13:41,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460858559] [2020-10-21 23:13:41,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789658323] [2020-10-21 23:13:41,843 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:13:41,938 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 23:13:41,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:13:41,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 23:13:41,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:13:41,958 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:13:41,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:13:41,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-21 23:13:41,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910620125] [2020-10-21 23:13:41,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 23:13:41,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:13:41,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 23:13:41,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-21 23:13:41,960 INFO L87 Difference]: Start difference. First operand 33873 states and 180354 transitions. Second operand 11 states. Received shutdown request... [2020-10-21 23:13:44,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:13:44,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,50 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:13:44,292 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-21 23:13:44,298 WARN L235 ceAbstractionStarter]: Timeout [2020-10-21 23:13:44,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 11:13:44 BasicIcfg [2020-10-21 23:13:44,298 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-21 23:13:44,299 INFO L168 Benchmark]: Toolchain (without parser) took 230233.74 ms. Allocated memory was 136.8 MB in the beginning and 3.2 GB in the end (delta: 3.0 GB). Free memory was 98.2 MB in the beginning and 2.0 GB in the end (delta: -1.9 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2020-10-21 23:13:44,300 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 136.8 MB. Free memory was 118.3 MB in the beginning and 117.9 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-21 23:13:44,300 INFO L168 Benchmark]: CACSL2BoogieTranslator took 692.04 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 97.4 MB in the beginning and 157.3 MB in the end (delta: -59.9 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-10-21 23:13:44,300 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.09 ms. Allocated memory is still 200.3 MB. Free memory was 157.3 MB in the beginning and 155.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-10-21 23:13:44,301 INFO L168 Benchmark]: Boogie Preprocessor took 26.18 ms. Allocated memory is still 200.3 MB. Free memory was 155.3 MB in the beginning and 153.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-10-21 23:13:44,301 INFO L168 Benchmark]: RCFGBuilder took 435.62 ms. Allocated memory is still 200.3 MB. Free memory was 153.1 MB in the beginning and 131.8 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2020-10-21 23:13:44,301 INFO L168 Benchmark]: TraceAbstraction took 229021.96 ms. Allocated memory was 200.3 MB in the beginning and 3.2 GB in the end (delta: 3.0 GB). Free memory was 131.8 MB in the beginning and 2.0 GB in the end (delta: -1.9 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2020-10-21 23:13:44,303 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 136.8 MB. Free memory was 118.3 MB in the beginning and 117.9 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 692.04 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 97.4 MB in the beginning and 157.3 MB in the end (delta: -59.9 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.09 ms. Allocated memory is still 200.3 MB. Free memory was 157.3 MB in the beginning and 155.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.18 ms. Allocated memory is still 200.3 MB. Free memory was 155.3 MB in the beginning and 153.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 435.62 ms. Allocated memory is still 200.3 MB. Free memory was 153.1 MB in the beginning and 131.8 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 229021.96 ms. Allocated memory was 200.3 MB in the beginning and 3.2 GB in the end (delta: 3.0 GB). Free memory was 131.8 MB in the beginning and 2.0 GB in the end (delta: -1.9 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 544 VarBasedMoverChecksPositive, 5 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 3 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.7s, 63 PlacesBefore, 18 PlacesAfterwards, 60 TransitionsBefore, 12 TransitionsAfterwards, 942 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 3 ChoiceCompositions, 60 TotalNumberOfCompositions, 879 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 790 VarBasedMoverChecksPositive, 11 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 32 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 88 PlacesBefore, 31 PlacesAfterwards, 83 TransitionsBefore, 21 TransitionsAfterwards, 1428 CoEnabledTransitionPairs, 5 FixpointIterations, 35 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 7 ConcurrentYvCompositions, 5 ChoiceCompositions, 83 TotalNumberOfCompositions, 1665 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1118 VarBasedMoverChecksPositive, 18 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 48 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.9s, 113 PlacesBefore, 41 PlacesAfterwards, 106 TransitionsBefore, 27 TransitionsAfterwards, 1998 CoEnabledTransitionPairs, 5 FixpointIterations, 50 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 8 ConcurrentYvCompositions, 7 ChoiceCompositions, 111 TotalNumberOfCompositions, 2809 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1549 VarBasedMoverChecksPositive, 27 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 80 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.2s, 138 PlacesBefore, 51 PlacesAfterwards, 129 TransitionsBefore, 33 TransitionsAfterwards, 2652 CoEnabledTransitionPairs, 6 FixpointIterations, 68 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 14 TrivialYvCompositions, 8 ConcurrentYvCompositions, 9 ChoiceCompositions, 139 TotalNumberOfCompositions, 3837 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1750 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 71 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.4s, 163 PlacesBefore, 61 PlacesAfterwards, 152 TransitionsBefore, 39 TransitionsAfterwards, 3390 CoEnabledTransitionPairs, 6 FixpointIterations, 81 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 22 TrivialYvCompositions, 7 ConcurrentYvCompositions, 11 ChoiceCompositions, 164 TotalNumberOfCompositions, 4983 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 2204 VarBasedMoverChecksPositive, 35 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 103 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.7s, 188 PlacesBefore, 71 PlacesAfterwards, 175 TransitionsBefore, 45 TransitionsAfterwards, 4212 CoEnabledTransitionPairs, 5 FixpointIterations, 99 TrivialSequentialCompositions, 50 ConcurrentSequentialCompositions, 25 TrivialYvCompositions, 6 ConcurrentYvCompositions, 13 ChoiceCompositions, 193 TotalNumberOfCompositions, 6134 MoverChecksTotal - TimeoutResultAtElement [Line: 683]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 683). Cancelled while BasicCegarLoop was constructing difference of abstraction (33873states) and FLOYD_HOARE automaton (currently 29 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (117821 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 57 locations, 1 error locations. Started 6 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 228.6s, OverallIterations: 110, TraceHistogramMax: 6, AutomataDifference: 78.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 14.6s, HoareTripleCheckerStatistics: 6634 SDtfs, 22207 SDslu, 21389 SDs, 0 SdLazy, 23200 SolverSat, 1899 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3008 GetRequests, 956 SyntacticMatches, 0 SemanticMatches, 2052 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12703 ImplicationChecksByTransitivity, 19.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37062occurred in iteration=23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 112.1s AutomataMinimizationTime, 104 MinimizatonAttempts, 2592909 StatesRemovedByMinimization, 97 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 6.9s InterpolantComputationTime, 3234 NumberOfCodeBlocks, 3178 NumberOfCodeBlocksAsserted, 184 NumberOfCheckSat, 2992 ConstructedInterpolants, 0 QuantifiedInterpolants, 188328 SizeOfPredicates, 264 NumberOfNonLiveVariables, 6420 ConjunctsInSsa, 362 ConjunctsInUnsatCore, 154 InterpolantComputations, 56 PerfectInterpolantSequences, 1098/1808 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown