/usr/bin/java -Xmx16000000000 -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/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 22:12:06,679 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 22:12:06,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 22:12:06,711 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 22:12:06,712 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 22:12:06,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 22:12:06,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 22:12:06,716 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 22:12:06,720 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 22:12:06,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 22:12:06,725 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 22:12:06,727 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 22:12:06,727 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 22:12:06,728 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 22:12:06,729 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 22:12:06,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 22:12:06,730 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 22:12:06,731 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 22:12:06,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 22:12:06,734 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 22:12:06,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 22:12:06,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 22:12:06,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 22:12:06,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 22:12:06,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 22:12:06,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 22:12:06,741 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 22:12:06,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 22:12:06,742 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 22:12:06,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 22:12:06,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 22:12:06,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 22:12:06,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 22:12:06,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 22:12:06,746 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 22:12:06,746 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 22:12:06,747 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 22:12:06,747 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 22:12:06,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 22:12:06,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 22:12:06,749 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 22:12:06,750 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-10-15 22:12:06,772 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 22:12:06,772 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 22:12:06,773 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 22:12:06,774 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 22:12:06,774 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 22:12:06,774 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 22:12:06,774 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 22:12:06,774 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 22:12:06,775 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 22:12:06,775 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 22:12:06,775 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 22:12:06,775 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 22:12:06,775 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 22:12:06,776 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 22:12:06,776 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 22:12:06,776 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 22:12:06,776 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 22:12:06,776 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 22:12:06,776 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 22:12:06,777 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 22:12:06,777 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 22:12:06,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 22:12:06,777 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 22:12:06,778 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 22:12:06,778 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 22:12:06,778 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 22:12:06,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 22:12:06,778 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 22:12:06,778 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 22:12:07,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 22:12:07,084 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 22:12:07,088 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 22:12:07,089 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 22:12:07,091 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 22:12:07,092 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.oepc.i [2020-10-15 22:12:07,148 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bbd8873e/814291b4d05e4438b69e9bdb079036bc/FLAGd46aafb9f [2020-10-15 22:12:07,702 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 22:12:07,703 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_tso.oepc.i [2020-10-15 22:12:07,725 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bbd8873e/814291b4d05e4438b69e9bdb079036bc/FLAGd46aafb9f [2020-10-15 22:12:07,999 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bbd8873e/814291b4d05e4438b69e9bdb079036bc [2020-10-15 22:12:08,007 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 22:12:08,009 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 22:12:08,010 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 22:12:08,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 22:12:08,014 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 22:12:08,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 10:12:08" (1/1) ... [2020-10-15 22:12:08,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@892fbc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:12:08, skipping insertion in model container [2020-10-15 22:12:08,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 10:12:08" (1/1) ... [2020-10-15 22:12:08,027 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 22:12:08,089 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 22:12:08,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 22:12:08,641 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 22:12:08,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 22:12:08,760 INFO L208 MainTranslator]: Completed translation [2020-10-15 22:12:08,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:12:08 WrapperNode [2020-10-15 22:12:08,761 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 22:12:08,762 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 22:12:08,762 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 22:12:08,762 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 22:12:08,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:12:08" (1/1) ... [2020-10-15 22:12:08,788 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:12:08" (1/1) ... [2020-10-15 22:12:08,812 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 22:12:08,813 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 22:12:08,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 22:12:08,813 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 22:12:08,823 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:12:08" (1/1) ... [2020-10-15 22:12:08,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:12:08" (1/1) ... [2020-10-15 22:12:08,827 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:12:08" (1/1) ... [2020-10-15 22:12:08,827 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:12:08" (1/1) ... [2020-10-15 22:12:08,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:12:08" (1/1) ... [2020-10-15 22:12:08,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:12:08" (1/1) ... [2020-10-15 22:12:08,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:12:08" (1/1) ... [2020-10-15 22:12:08,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 22:12:08,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 22:12:08,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 22:12:08,843 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 22:12:08,844 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:12:08" (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 [2020-10-15 22:12:08,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 22:12:08,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-15 22:12:08,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 22:12:08,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 22:12:08,919 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-15 22:12:08,919 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-15 22:12:08,919 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-15 22:12:08,919 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-15 22:12:08,919 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-15 22:12:08,920 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-15 22:12:08,920 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-15 22:12:08,920 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-15 22:12:08,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-15 22:12:08,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 22:12:08,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 22:12:08,922 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 22:12:09,303 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 22:12:09,303 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-15 22:12:09,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 10:12:09 BoogieIcfgContainer [2020-10-15 22:12:09,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 22:12:09,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 22:12:09,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 22:12:09,311 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 22:12:09,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 10:12:08" (1/3) ... [2020-10-15 22:12:09,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c485833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 10:12:09, skipping insertion in model container [2020-10-15 22:12:09,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:12:08" (2/3) ... [2020-10-15 22:12:09,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c485833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 10:12:09, skipping insertion in model container [2020-10-15 22:12:09,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 10:12:09" (3/3) ... [2020-10-15 22:12:09,315 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_tso.oepc.i [2020-10-15 22:12:09,328 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 22:12:09,329 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 22:12:09,337 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 22:12:09,338 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 22:12:09,370 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,370 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,370 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,371 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,371 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,372 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,372 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,372 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,372 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,373 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,373 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,373 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,374 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,374 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,374 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,374 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,375 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,375 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,375 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,376 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,376 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,376 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,377 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,377 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,381 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,381 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,381 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,382 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,392 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,392 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,393 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,393 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,395 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,395 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,396 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,396 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,398 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,399 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,399 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,399 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,414 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-15 22:12:09,434 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 22:12:09,434 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 22:12:09,434 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 22:12:09,434 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 22:12:09,434 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 22:12:09,434 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 22:12:09,434 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 22:12:09,435 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 22:12:09,449 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 22:12:09,452 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 80 transitions, 180 flow [2020-10-15 22:12:09,455 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 80 transitions, 180 flow [2020-10-15 22:12:09,457 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-10-15 22:12:09,506 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-10-15 22:12:09,506 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-15 22:12:09,515 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-10-15 22:12:09,519 INFO L117 LiptonReduction]: Number of co-enabled transitions 1822 [2020-10-15 22:12:11,106 INFO L132 LiptonReduction]: Checked pairs total: 3057 [2020-10-15 22:12:11,106 INFO L134 LiptonReduction]: Total number of compositions: 63 [2020-10-15 22:12:11,113 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-10-15 22:12:11,178 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-10-15 22:12:11,180 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-10-15 22:12:11,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 22:12:11,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:12:11,192 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:12:11,193 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:12:11,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:12:11,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1118879254, now seen corresponding path program 1 times [2020-10-15 22:12:11,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:12:11,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89507221] [2020-10-15 22:12:11,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:12:11,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:12:11,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:12:11,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89507221] [2020-10-15 22:12:11,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:12:11,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:12:11,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309876209] [2020-10-15 22:12:11,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-15 22:12:11,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:12:11,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-15 22:12:11,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-15 22:12:11,409 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-10-15 22:12:11,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:12:11,464 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-10-15 22:12:11,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-15 22:12:11,466 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-15 22:12:11,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:12:11,494 INFO L225 Difference]: With dead ends: 850 [2020-10-15 22:12:11,495 INFO L226 Difference]: Without dead ends: 706 [2020-10-15 22:12:11,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-15 22:12:11,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-10-15 22:12:11,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-10-15 22:12:11,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-10-15 22:12:11,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-10-15 22:12:11,631 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-10-15 22:12:11,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:12:11,632 INFO L481 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-10-15 22:12:11,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-15 22:12:11,633 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-10-15 22:12:11,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 22:12:11,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:12:11,636 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:12:11,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 22:12:11,636 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:12:11,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:12:11,637 INFO L82 PathProgramCache]: Analyzing trace with hash -325524913, now seen corresponding path program 1 times [2020-10-15 22:12:11,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:12:11,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629141921] [2020-10-15 22:12:11,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:12:11,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:12:11,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:12:11,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629141921] [2020-10-15 22:12:11,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:12:11,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:12:11,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291071550] [2020-10-15 22:12:11,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:12:11,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:12:11,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:12:11,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:12:11,773 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-10-15 22:12:11,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:12:11,824 INFO L93 Difference]: Finished difference Result 802 states and 2662 transitions. [2020-10-15 22:12:11,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:12:11,825 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-15 22:12:11,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:12:11,832 INFO L225 Difference]: With dead ends: 802 [2020-10-15 22:12:11,832 INFO L226 Difference]: Without dead ends: 658 [2020-10-15 22:12:11,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:12:11,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-10-15 22:12:11,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2020-10-15 22:12:11,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2020-10-15 22:12:11,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 2230 transitions. [2020-10-15 22:12:11,868 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 2230 transitions. Word has length 11 [2020-10-15 22:12:11,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:12:11,869 INFO L481 AbstractCegarLoop]: Abstraction has 658 states and 2230 transitions. [2020-10-15 22:12:11,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:12:11,869 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 2230 transitions. [2020-10-15 22:12:11,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 22:12:11,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:12:11,872 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:12:11,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 22:12:11,873 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:12:11,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:12:11,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1501347001, now seen corresponding path program 1 times [2020-10-15 22:12:11,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:12:11,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312138051] [2020-10-15 22:12:11,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:12:11,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:12:11,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:12:11,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312138051] [2020-10-15 22:12:11,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:12:11,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:12:11,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043278060] [2020-10-15 22:12:11,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:12:11,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:12:11,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:12:11,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:12:11,966 INFO L87 Difference]: Start difference. First operand 658 states and 2230 transitions. Second operand 4 states. [2020-10-15 22:12:11,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:12:11,995 INFO L93 Difference]: Finished difference Result 718 states and 2348 transitions. [2020-10-15 22:12:11,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:12:11,996 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-15 22:12:11,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:12:12,002 INFO L225 Difference]: With dead ends: 718 [2020-10-15 22:12:12,002 INFO L226 Difference]: Without dead ends: 598 [2020-10-15 22:12:12,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:12:12,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2020-10-15 22:12:12,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2020-10-15 22:12:12,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2020-10-15 22:12:12,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 1992 transitions. [2020-10-15 22:12:12,027 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 1992 transitions. Word has length 12 [2020-10-15 22:12:12,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:12:12,027 INFO L481 AbstractCegarLoop]: Abstraction has 598 states and 1992 transitions. [2020-10-15 22:12:12,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:12:12,028 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 1992 transitions. [2020-10-15 22:12:12,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 22:12:12,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:12:12,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:12:12,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 22:12:12,031 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:12:12,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:12:12,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1422147839, now seen corresponding path program 1 times [2020-10-15 22:12:12,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:12:12,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537139862] [2020-10-15 22:12:12,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:12:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:12:12,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:12:12,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537139862] [2020-10-15 22:12:12,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:12:12,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:12:12,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079822224] [2020-10-15 22:12:12,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:12:12,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:12:12,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:12:12,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:12:12,150 INFO L87 Difference]: Start difference. First operand 598 states and 1992 transitions. Second operand 4 states. [2020-10-15 22:12:12,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:12:12,175 INFO L93 Difference]: Finished difference Result 634 states and 2058 transitions. [2020-10-15 22:12:12,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:12:12,176 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-15 22:12:12,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:12:12,180 INFO L225 Difference]: With dead ends: 634 [2020-10-15 22:12:12,180 INFO L226 Difference]: Without dead ends: 562 [2020-10-15 22:12:12,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:12:12,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-10-15 22:12:12,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2020-10-15 22:12:12,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2020-10-15 22:12:12,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 1854 transitions. [2020-10-15 22:12:12,202 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 1854 transitions. Word has length 13 [2020-10-15 22:12:12,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:12:12,203 INFO L481 AbstractCegarLoop]: Abstraction has 562 states and 1854 transitions. [2020-10-15 22:12:12,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:12:12,203 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 1854 transitions. [2020-10-15 22:12:12,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 22:12:12,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:12:12,204 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:12:12,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 22:12:12,205 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:12:12,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:12:12,205 INFO L82 PathProgramCache]: Analyzing trace with hash -464753782, now seen corresponding path program 1 times [2020-10-15 22:12:12,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:12:12,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878445154] [2020-10-15 22:12:12,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:12:12,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:12:12,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:12:12,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878445154] [2020-10-15 22:12:12,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:12:12,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:12:12,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054589426] [2020-10-15 22:12:12,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 22:12:12,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:12:12,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 22:12:12,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:12:12,261 INFO L87 Difference]: Start difference. First operand 562 states and 1854 transitions. Second operand 5 states. [2020-10-15 22:12:12,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:12:12,314 INFO L93 Difference]: Finished difference Result 834 states and 2710 transitions. [2020-10-15 22:12:12,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 22:12:12,314 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-15 22:12:12,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:12:12,318 INFO L225 Difference]: With dead ends: 834 [2020-10-15 22:12:12,318 INFO L226 Difference]: Without dead ends: 450 [2020-10-15 22:12:12,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 22:12:12,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2020-10-15 22:12:12,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 450. [2020-10-15 22:12:12,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-10-15 22:12:12,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1444 transitions. [2020-10-15 22:12:12,335 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1444 transitions. Word has length 14 [2020-10-15 22:12:12,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:12:12,336 INFO L481 AbstractCegarLoop]: Abstraction has 450 states and 1444 transitions. [2020-10-15 22:12:12,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 22:12:12,336 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1444 transitions. [2020-10-15 22:12:12,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 22:12:12,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:12:12,337 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:12:12,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 22:12:12,338 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:12:12,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:12:12,338 INFO L82 PathProgramCache]: Analyzing trace with hash -453774883, now seen corresponding path program 1 times [2020-10-15 22:12:12,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:12:12,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233288525] [2020-10-15 22:12:12,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:12:12,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:12:12,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:12:12,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233288525] [2020-10-15 22:12:12,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:12:12,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 22:12:12,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582209382] [2020-10-15 22:12:12,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 22:12:12,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:12:12,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 22:12:12,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:12:12,385 INFO L87 Difference]: Start difference. First operand 450 states and 1444 transitions. Second operand 5 states. [2020-10-15 22:12:12,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:12:12,451 INFO L93 Difference]: Finished difference Result 834 states and 2560 transitions. [2020-10-15 22:12:12,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 22:12:12,451 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-15 22:12:12,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:12:12,454 INFO L225 Difference]: With dead ends: 834 [2020-10-15 22:12:12,455 INFO L226 Difference]: Without dead ends: 410 [2020-10-15 22:12:12,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 22:12:12,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-10-15 22:12:12,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 346. [2020-10-15 22:12:12,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2020-10-15 22:12:12,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 1030 transitions. [2020-10-15 22:12:12,468 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 1030 transitions. Word has length 15 [2020-10-15 22:12:12,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:12:12,468 INFO L481 AbstractCegarLoop]: Abstraction has 346 states and 1030 transitions. [2020-10-15 22:12:12,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 22:12:12,469 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 1030 transitions. [2020-10-15 22:12:12,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 22:12:12,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:12:12,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:12:12,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 22:12:12,470 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:12:12,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:12:12,470 INFO L82 PathProgramCache]: Analyzing trace with hash -99110680, now seen corresponding path program 1 times [2020-10-15 22:12:12,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:12:12,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114585026] [2020-10-15 22:12:12,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:12:12,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:12:12,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:12:12,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114585026] [2020-10-15 22:12:12,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:12:12,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:12:12,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111306703] [2020-10-15 22:12:12,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:12:12,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:12:12,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:12:12,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:12:12,510 INFO L87 Difference]: Start difference. First operand 346 states and 1030 transitions. Second operand 4 states. [2020-10-15 22:12:12,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:12:12,536 INFO L93 Difference]: Finished difference Result 494 states and 1402 transitions. [2020-10-15 22:12:12,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:12:12,537 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-15 22:12:12,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:12:12,540 INFO L225 Difference]: With dead ends: 494 [2020-10-15 22:12:12,540 INFO L226 Difference]: Without dead ends: 370 [2020-10-15 22:12:12,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:12:12,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2020-10-15 22:12:12,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 322. [2020-10-15 22:12:12,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2020-10-15 22:12:12,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 910 transitions. [2020-10-15 22:12:12,552 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 910 transitions. Word has length 15 [2020-10-15 22:12:12,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:12:12,553 INFO L481 AbstractCegarLoop]: Abstraction has 322 states and 910 transitions. [2020-10-15 22:12:12,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:12:12,553 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 910 transitions. [2020-10-15 22:12:12,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 22:12:12,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:12:12,554 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:12:12,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 22:12:12,555 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:12:12,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:12:12,555 INFO L82 PathProgramCache]: Analyzing trace with hash -96752386, now seen corresponding path program 1 times [2020-10-15 22:12:12,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:12:12,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468184692] [2020-10-15 22:12:12,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:12:12,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:12:12,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:12:12,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468184692] [2020-10-15 22:12:12,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:12:12,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:12:12,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121414871] [2020-10-15 22:12:12,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 22:12:12,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:12:12,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 22:12:12,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:12:12,602 INFO L87 Difference]: Start difference. First operand 322 states and 910 transitions. Second operand 5 states. [2020-10-15 22:12:12,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:12:12,635 INFO L93 Difference]: Finished difference Result 454 states and 1236 transitions. [2020-10-15 22:12:12,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:12:12,636 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-15 22:12:12,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:12:12,638 INFO L225 Difference]: With dead ends: 454 [2020-10-15 22:12:12,638 INFO L226 Difference]: Without dead ends: 238 [2020-10-15 22:12:12,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-15 22:12:12,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-15 22:12:12,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2020-10-15 22:12:12,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-10-15 22:12:12,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 639 transitions. [2020-10-15 22:12:12,648 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 639 transitions. Word has length 15 [2020-10-15 22:12:12,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:12:12,648 INFO L481 AbstractCegarLoop]: Abstraction has 238 states and 639 transitions. [2020-10-15 22:12:12,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 22:12:12,648 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 639 transitions. [2020-10-15 22:12:12,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 22:12:12,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:12:12,649 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:12:12,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 22:12:12,650 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:12:12,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:12:12,650 INFO L82 PathProgramCache]: Analyzing trace with hash 807678122, now seen corresponding path program 2 times [2020-10-15 22:12:12,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:12:12,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895253331] [2020-10-15 22:12:12,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:12:12,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:12:12,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:12:12,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895253331] [2020-10-15 22:12:12,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:12:12,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:12:12,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763137357] [2020-10-15 22:12:12,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:12:12,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:12:12,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:12:12,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:12:12,720 INFO L87 Difference]: Start difference. First operand 238 states and 639 transitions. Second operand 4 states. [2020-10-15 22:12:12,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:12:12,771 INFO L93 Difference]: Finished difference Result 283 states and 696 transitions. [2020-10-15 22:12:12,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:12:12,772 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-15 22:12:12,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:12:12,774 INFO L225 Difference]: With dead ends: 283 [2020-10-15 22:12:12,774 INFO L226 Difference]: Without dead ends: 214 [2020-10-15 22:12:12,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:12:12,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-15 22:12:12,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-10-15 22:12:12,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-15 22:12:12,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 534 transitions. [2020-10-15 22:12:12,784 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 534 transitions. Word has length 15 [2020-10-15 22:12:12,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:12:12,785 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 534 transitions. [2020-10-15 22:12:12,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:12:12,786 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 534 transitions. [2020-10-15 22:12:12,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-15 22:12:12,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:12:12,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:12:12,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 22:12:12,788 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:12:12,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:12:12,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1481069530, now seen corresponding path program 1 times [2020-10-15 22:12:12,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:12:12,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656679583] [2020-10-15 22:12:12,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:12:12,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:12:12,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:12:12,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656679583] [2020-10-15 22:12:12,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:12:12,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 22:12:12,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035988909] [2020-10-15 22:12:12,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 22:12:12,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:12:12,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 22:12:12,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:12:12,886 INFO L87 Difference]: Start difference. First operand 214 states and 534 transitions. Second operand 5 states. [2020-10-15 22:12:12,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:12:12,954 INFO L93 Difference]: Finished difference Result 211 states and 465 transitions. [2020-10-15 22:12:12,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 22:12:12,955 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-15 22:12:12,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:12:12,956 INFO L225 Difference]: With dead ends: 211 [2020-10-15 22:12:12,956 INFO L226 Difference]: Without dead ends: 158 [2020-10-15 22:12:12,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 22:12:12,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-15 22:12:12,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-10-15 22:12:12,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-15 22:12:12,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 339 transitions. [2020-10-15 22:12:12,962 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 339 transitions. Word has length 16 [2020-10-15 22:12:12,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:12:12,964 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 339 transitions. [2020-10-15 22:12:12,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 22:12:12,964 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 339 transitions. [2020-10-15 22:12:12,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 22:12:12,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:12:12,965 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:12:12,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 22:12:12,965 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:12:12,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:12:12,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1331262194, now seen corresponding path program 1 times [2020-10-15 22:12:12,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:12:12,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039373374] [2020-10-15 22:12:12,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:12:12,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:12:13,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:12:13,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039373374] [2020-10-15 22:12:13,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:12:13,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 22:12:13,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715583416] [2020-10-15 22:12:13,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 22:12:13,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:12:13,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 22:12:13,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 22:12:13,038 INFO L87 Difference]: Start difference. First operand 158 states and 339 transitions. Second operand 6 states. [2020-10-15 22:12:13,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:12:13,098 INFO L93 Difference]: Finished difference Result 134 states and 268 transitions. [2020-10-15 22:12:13,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 22:12:13,099 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-15 22:12:13,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:12:13,099 INFO L225 Difference]: With dead ends: 134 [2020-10-15 22:12:13,100 INFO L226 Difference]: Without dead ends: 95 [2020-10-15 22:12:13,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-15 22:12:13,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-15 22:12:13,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-10-15 22:12:13,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-15 22:12:13,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 181 transitions. [2020-10-15 22:12:13,105 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 181 transitions. Word has length 17 [2020-10-15 22:12:13,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:12:13,105 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 181 transitions. [2020-10-15 22:12:13,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 22:12:13,105 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 181 transitions. [2020-10-15 22:12:13,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 22:12:13,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:12:13,106 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:12:13,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 22:12:13,106 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:12:13,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:12:13,107 INFO L82 PathProgramCache]: Analyzing trace with hash 461519417, now seen corresponding path program 1 times [2020-10-15 22:12:13,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:12:13,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546331429] [2020-10-15 22:12:13,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:12:13,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:12:13,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:12:13,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546331429] [2020-10-15 22:12:13,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:12:13,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 22:12:13,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398209141] [2020-10-15 22:12:13,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 22:12:13,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:12:13,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 22:12:13,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:12:13,154 INFO L87 Difference]: Start difference. First operand 95 states and 181 transitions. Second operand 5 states. [2020-10-15 22:12:13,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:12:13,183 INFO L93 Difference]: Finished difference Result 109 states and 198 transitions. [2020-10-15 22:12:13,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 22:12:13,184 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-15 22:12:13,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:12:13,185 INFO L225 Difference]: With dead ends: 109 [2020-10-15 22:12:13,185 INFO L226 Difference]: Without dead ends: 93 [2020-10-15 22:12:13,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-15 22:12:13,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-15 22:12:13,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2020-10-15 22:12:13,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-15 22:12:13,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 169 transitions. [2020-10-15 22:12:13,189 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 169 transitions. Word has length 19 [2020-10-15 22:12:13,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:12:13,189 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 169 transitions. [2020-10-15 22:12:13,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 22:12:13,190 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 169 transitions. [2020-10-15 22:12:13,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 22:12:13,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:12:13,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:12:13,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 22:12:13,191 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:12:13,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:12:13,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1319799301, now seen corresponding path program 2 times [2020-10-15 22:12:13,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:12:13,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267188795] [2020-10-15 22:12:13,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:12:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:12:13,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:12:13,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267188795] [2020-10-15 22:12:13,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:12:13,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 22:12:13,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180489560] [2020-10-15 22:12:13,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 22:12:13,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:12:13,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 22:12:13,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 22:12:13,255 INFO L87 Difference]: Start difference. First operand 91 states and 169 transitions. Second operand 7 states. [2020-10-15 22:12:13,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:12:13,296 INFO L93 Difference]: Finished difference Result 81 states and 154 transitions. [2020-10-15 22:12:13,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 22:12:13,297 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-15 22:12:13,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:12:13,297 INFO L225 Difference]: With dead ends: 81 [2020-10-15 22:12:13,297 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 22:12:13,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-15 22:12:13,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 22:12:13,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 22:12:13,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 22:12:13,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 22:12:13,298 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-10-15 22:12:13,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:12:13,299 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 22:12:13,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 22:12:13,299 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 22:12:13,299 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 22:12:13,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 22:12:13,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 10:12:13 BasicIcfg [2020-10-15 22:12:13,303 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 22:12:13,306 INFO L168 Benchmark]: Toolchain (without parser) took 5296.24 ms. Allocated memory was 245.9 MB in the beginning and 433.6 MB in the end (delta: 187.7 MB). Free memory was 200.4 MB in the beginning and 339.5 MB in the end (delta: -139.1 MB). Peak memory consumption was 48.6 MB. Max. memory is 14.2 GB. [2020-10-15 22:12:13,306 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 245.9 MB. Free memory is still 222.3 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 22:12:13,307 INFO L168 Benchmark]: CACSL2BoogieTranslator took 750.89 ms. Allocated memory was 245.9 MB in the beginning and 299.4 MB in the end (delta: 53.5 MB). Free memory was 200.4 MB in the beginning and 252.7 MB in the end (delta: -52.3 MB). Peak memory consumption was 29.6 MB. Max. memory is 14.2 GB. [2020-10-15 22:12:13,308 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.18 ms. Allocated memory is still 299.4 MB. Free memory was 252.7 MB in the beginning and 250.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 22:12:13,309 INFO L168 Benchmark]: Boogie Preprocessor took 29.10 ms. Allocated memory is still 299.4 MB. Free memory was 250.2 MB in the beginning and 247.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 22:12:13,309 INFO L168 Benchmark]: RCFGBuilder took 463.71 ms. Allocated memory is still 299.4 MB. Free memory was 247.7 MB in the beginning and 223.3 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. [2020-10-15 22:12:13,310 INFO L168 Benchmark]: TraceAbstraction took 3995.69 ms. Allocated memory was 299.4 MB in the beginning and 433.6 MB in the end (delta: 134.2 MB). Free memory was 223.3 MB in the beginning and 339.5 MB in the end (delta: -116.2 MB). Peak memory consumption was 18.1 MB. Max. memory is 14.2 GB. [2020-10-15 22:12:13,314 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 245.9 MB. Free memory is still 222.3 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 750.89 ms. Allocated memory was 245.9 MB in the beginning and 299.4 MB in the end (delta: 53.5 MB). Free memory was 200.4 MB in the beginning and 252.7 MB in the end (delta: -52.3 MB). Peak memory consumption was 29.6 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 51.18 ms. Allocated memory is still 299.4 MB. Free memory was 252.7 MB in the beginning and 250.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 29.10 ms. Allocated memory is still 299.4 MB. Free memory was 250.2 MB in the beginning and 247.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 463.71 ms. Allocated memory is still 299.4 MB. Free memory was 247.7 MB in the beginning and 223.3 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3995.69 ms. Allocated memory was 299.4 MB in the beginning and 433.6 MB in the end (delta: 134.2 MB). Free memory was 223.3 MB in the beginning and 339.5 MB in the end (delta: -116.2 MB). Peak memory consumption was 18.1 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1223 VarBasedMoverChecksPositive, 53 VarBasedMoverChecksNegative, 18 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 103 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 91 PlacesBefore, 39 PlacesAfterwards, 80 TransitionsBefore, 27 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 63 TotalNumberOfCompositions, 3057 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.8s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 347 SDtfs, 346 SDslu, 602 SDs, 0 SdLazy, 217 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=850occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 114 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 191 NumberOfCodeBlocks, 191 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 178 ConstructedInterpolants, 0 QuantifiedInterpolants, 7404 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 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 proved your program to be correct! Received shutdown request...