/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 18:34:21,665 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 18:34:21,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 18:34:21,707 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 18:34:21,708 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 18:34:21,716 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 18:34:21,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 18:34:21,722 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 18:34:21,724 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 18:34:21,727 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 18:34:21,728 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 18:34:21,729 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 18:34:21,729 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 18:34:21,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 18:34:21,734 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 18:34:21,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 18:34:21,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 18:34:21,738 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 18:34:21,739 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 18:34:21,748 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 18:34:21,750 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 18:34:21,751 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 18:34:21,752 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 18:34:21,753 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 18:34:21,764 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-15 18:34:21,769 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 18:34:21,774 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 18:34:21,775 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 18:34:21,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 18:34:21,779 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 18:34:21,779 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 18:34:21,780 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 18:34:21,780 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 18:34:21,780 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 18:34:21,784 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 18:34:21,785 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 18:34:21,785 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 18:34:21,824 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 18:34:21,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 18:34:21,826 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 18:34:21,826 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 18:34:21,826 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 18:34:21,827 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 18:34:21,827 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 18:34:21,827 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 18:34:21,827 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 18:34:21,828 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 18:34:21,829 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 18:34:21,829 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 18:34:21,829 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 18:34:21,830 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 18:34:21,830 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 18:34:21,830 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 18:34:21,830 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 18:34:21,830 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 18:34:21,831 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 18:34:21,831 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 18:34:21,831 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 18:34:21,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 18:34:21,832 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 18:34:21,832 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 18:34:21,832 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 18:34:21,832 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 18:34:21,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 18:34:21,833 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 18:34:21,833 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 18:34:21,833 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 18:34:22,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 18:34:22,184 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 18:34:22,188 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 18:34:22,189 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 18:34:22,191 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 18:34:22,192 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i [2020-10-15 18:34:22,253 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/594dcdd68/7cd014ebdd5c43d39a3a130fd30ec7fd/FLAGe5b28bf25 [2020-10-15 18:34:22,772 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 18:34:22,773 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i [2020-10-15 18:34:22,787 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/594dcdd68/7cd014ebdd5c43d39a3a130fd30ec7fd/FLAGe5b28bf25 [2020-10-15 18:34:23,006 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/594dcdd68/7cd014ebdd5c43d39a3a130fd30ec7fd [2020-10-15 18:34:23,015 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 18:34:23,016 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 18:34:23,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 18:34:23,018 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 18:34:23,021 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 18:34:23,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:34:23" (1/1) ... [2020-10-15 18:34:23,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1025cc11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:34:23, skipping insertion in model container [2020-10-15 18:34:23,027 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:34:23" (1/1) ... [2020-10-15 18:34:23,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 18:34:23,088 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 18:34:23,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 18:34:23,509 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 18:34:23,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 18:34:23,738 INFO L208 MainTranslator]: Completed translation [2020-10-15 18:34:23,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:34:23 WrapperNode [2020-10-15 18:34:23,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 18:34:23,739 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 18:34:23,740 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 18:34:23,740 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 18:34:23,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:34:23" (1/1) ... [2020-10-15 18:34:23,765 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:34:23" (1/1) ... [2020-10-15 18:34:23,786 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 18:34:23,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 18:34:23,787 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 18:34:23,787 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 18:34:23,794 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:34:23" (1/1) ... [2020-10-15 18:34:23,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:34:23" (1/1) ... [2020-10-15 18:34:23,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:34:23" (1/1) ... [2020-10-15 18:34:23,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:34:23" (1/1) ... [2020-10-15 18:34:23,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:34:23" (1/1) ... [2020-10-15 18:34:23,807 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:34:23" (1/1) ... [2020-10-15 18:34:23,810 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:34:23" (1/1) ... [2020-10-15 18:34:23,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 18:34:23,814 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 18:34:23,814 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 18:34:23,814 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 18:34:23,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:34:23" (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 18:34:23,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 18:34:23,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-15 18:34:23,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 18:34:23,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 18:34:23,873 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-15 18:34:23,873 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-15 18:34:23,873 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-15 18:34:23,873 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-15 18:34:23,874 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-15 18:34:23,874 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-15 18:34:23,874 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-15 18:34:23,874 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-15 18:34:23,874 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-15 18:34:23,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 18:34:23,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 18:34:23,877 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 18:34:24,253 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 18:34:24,253 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-15 18:34:24,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:34:24 BoogieIcfgContainer [2020-10-15 18:34:24,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 18:34:24,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 18:34:24,257 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 18:34:24,261 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 18:34:24,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 06:34:23" (1/3) ... [2020-10-15 18:34:24,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dd1375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 06:34:24, skipping insertion in model container [2020-10-15 18:34:24,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:34:23" (2/3) ... [2020-10-15 18:34:24,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dd1375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 06:34:24, skipping insertion in model container [2020-10-15 18:34:24,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:34:24" (3/3) ... [2020-10-15 18:34:24,265 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_tso.opt.i [2020-10-15 18:34:24,276 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 18:34:24,277 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 18:34:24,285 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 18:34:24,286 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 18:34:24,315 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:34:24,316 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:34:24,316 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:34:24,316 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:34:24,317 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:34:24,317 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:34:24,318 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:34:24,318 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:34:24,318 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:34:24,318 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:34:24,319 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:34:24,319 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:34:24,319 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:34:24,320 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:34:24,320 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:34:24,320 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:34:24,320 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:34:24,321 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:34:24,321 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:34:24,321 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:34:24,322 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:34:24,322 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:34:24,322 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:34:24,323 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:34:24,326 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:34:24,326 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:34:24,327 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:34:24,327 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:34:24,336 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:34:24,336 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:34:24,337 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:34:24,337 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:34:24,339 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:34:24,340 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:34:24,340 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:34:24,340 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:34:24,342 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:34:24,343 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:34:24,343 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:34:24,343 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:34:24,360 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-15 18:34:24,379 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 18:34:24,380 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 18:34:24,380 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 18:34:24,380 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 18:34:24,380 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 18:34:24,380 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 18:34:24,381 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 18:34:24,381 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 18:34:24,395 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 18:34:24,398 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 80 transitions, 180 flow [2020-10-15 18:34:24,400 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 80 transitions, 180 flow [2020-10-15 18:34:24,402 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-10-15 18:34:24,450 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-10-15 18:34:24,450 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-15 18:34:24,456 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 18:34:24,459 INFO L117 LiptonReduction]: Number of co-enabled transitions 1822 [2020-10-15 18:34:26,007 INFO L132 LiptonReduction]: Checked pairs total: 3057 [2020-10-15 18:34:26,008 INFO L134 LiptonReduction]: Total number of compositions: 63 [2020-10-15 18:34:26,015 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-10-15 18:34:26,078 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-10-15 18:34:26,080 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-10-15 18:34:26,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 18:34:26,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:34:26,093 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:34:26,093 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:34:26,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:34:26,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1118879254, now seen corresponding path program 1 times [2020-10-15 18:34:26,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:34:26,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306068254] [2020-10-15 18:34:26,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:34:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:34:26,318 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 18:34:26,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306068254] [2020-10-15 18:34:26,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:34:26,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 18:34:26,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383672732] [2020-10-15 18:34:26,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-15 18:34:26,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:34:26,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-15 18:34:26,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-15 18:34:26,347 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-10-15 18:34:26,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:34:26,409 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-10-15 18:34:26,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-15 18:34:26,410 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-15 18:34:26,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:34:26,439 INFO L225 Difference]: With dead ends: 850 [2020-10-15 18:34:26,440 INFO L226 Difference]: Without dead ends: 706 [2020-10-15 18:34:26,441 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 18:34:26,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-10-15 18:34:26,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-10-15 18:34:26,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-10-15 18:34:26,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-10-15 18:34:26,580 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-10-15 18:34:26,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:34:26,581 INFO L481 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-10-15 18:34:26,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-15 18:34:26,581 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-10-15 18:34:26,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 18:34:26,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:34:26,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:34:26,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 18:34:26,585 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:34:26,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:34:26,585 INFO L82 PathProgramCache]: Analyzing trace with hash -325524913, now seen corresponding path program 1 times [2020-10-15 18:34:26,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:34:26,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444335378] [2020-10-15 18:34:26,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:34:26,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:34:26,724 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 18:34:26,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444335378] [2020-10-15 18:34:26,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:34:26,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 18:34:26,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036585981] [2020-10-15 18:34:26,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 18:34:26,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:34:26,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 18:34:26,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 18:34:26,728 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-10-15 18:34:26,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:34:26,783 INFO L93 Difference]: Finished difference Result 802 states and 2662 transitions. [2020-10-15 18:34:26,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 18:34:26,784 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-15 18:34:26,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:34:26,790 INFO L225 Difference]: With dead ends: 802 [2020-10-15 18:34:26,791 INFO L226 Difference]: Without dead ends: 658 [2020-10-15 18:34:26,792 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 18:34:26,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-10-15 18:34:26,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2020-10-15 18:34:26,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2020-10-15 18:34:26,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 2230 transitions. [2020-10-15 18:34:26,821 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 2230 transitions. Word has length 11 [2020-10-15 18:34:26,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:34:26,821 INFO L481 AbstractCegarLoop]: Abstraction has 658 states and 2230 transitions. [2020-10-15 18:34:26,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 18:34:26,821 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 2230 transitions. [2020-10-15 18:34:26,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 18:34:26,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:34:26,824 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:34:26,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 18:34:26,825 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:34:26,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:34:26,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1501347001, now seen corresponding path program 1 times [2020-10-15 18:34:26,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:34:26,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363780509] [2020-10-15 18:34:26,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:34:26,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:34:26,888 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 18:34:26,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363780509] [2020-10-15 18:34:26,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:34:26,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 18:34:26,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779832493] [2020-10-15 18:34:26,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 18:34:26,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:34:26,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 18:34:26,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 18:34:26,890 INFO L87 Difference]: Start difference. First operand 658 states and 2230 transitions. Second operand 4 states. [2020-10-15 18:34:26,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:34:26,919 INFO L93 Difference]: Finished difference Result 718 states and 2348 transitions. [2020-10-15 18:34:26,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 18:34:26,919 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-15 18:34:26,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:34:26,924 INFO L225 Difference]: With dead ends: 718 [2020-10-15 18:34:26,925 INFO L226 Difference]: Without dead ends: 598 [2020-10-15 18:34:26,925 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 18:34:26,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2020-10-15 18:34:26,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2020-10-15 18:34:26,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2020-10-15 18:34:26,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 1992 transitions. [2020-10-15 18:34:26,948 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 1992 transitions. Word has length 12 [2020-10-15 18:34:26,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:34:26,948 INFO L481 AbstractCegarLoop]: Abstraction has 598 states and 1992 transitions. [2020-10-15 18:34:26,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 18:34:26,948 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 1992 transitions. [2020-10-15 18:34:26,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 18:34:26,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:34:26,950 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:34:26,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 18:34:26,951 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:34:26,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:34:26,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1422147839, now seen corresponding path program 1 times [2020-10-15 18:34:26,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:34:26,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507012270] [2020-10-15 18:34:26,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:34:26,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:34:27,003 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 18:34:27,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507012270] [2020-10-15 18:34:27,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:34:27,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 18:34:27,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140499360] [2020-10-15 18:34:27,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 18:34:27,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:34:27,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 18:34:27,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 18:34:27,005 INFO L87 Difference]: Start difference. First operand 598 states and 1992 transitions. Second operand 4 states. [2020-10-15 18:34:27,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:34:27,042 INFO L93 Difference]: Finished difference Result 668 states and 2153 transitions. [2020-10-15 18:34:27,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 18:34:27,043 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-15 18:34:27,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:34:27,048 INFO L225 Difference]: With dead ends: 668 [2020-10-15 18:34:27,048 INFO L226 Difference]: Without dead ends: 578 [2020-10-15 18:34:27,048 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 18:34:27,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-10-15 18:34:27,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2020-10-15 18:34:27,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-10-15 18:34:27,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 1906 transitions. [2020-10-15 18:34:27,070 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 1906 transitions. Word has length 13 [2020-10-15 18:34:27,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:34:27,070 INFO L481 AbstractCegarLoop]: Abstraction has 578 states and 1906 transitions. [2020-10-15 18:34:27,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 18:34:27,071 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 1906 transitions. [2020-10-15 18:34:27,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 18:34:27,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:34:27,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:34:27,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 18:34:27,073 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:34:27,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:34:27,073 INFO L82 PathProgramCache]: Analyzing trace with hash 796896076, now seen corresponding path program 1 times [2020-10-15 18:34:27,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:34:27,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508419547] [2020-10-15 18:34:27,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:34:27,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:34:27,123 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 18:34:27,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508419547] [2020-10-15 18:34:27,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:34:27,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 18:34:27,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178815358] [2020-10-15 18:34:27,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 18:34:27,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:34:27,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 18:34:27,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 18:34:27,126 INFO L87 Difference]: Start difference. First operand 578 states and 1906 transitions. Second operand 4 states. [2020-10-15 18:34:27,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:34:27,163 INFO L93 Difference]: Finished difference Result 814 states and 2558 transitions. [2020-10-15 18:34:27,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 18:34:27,164 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-15 18:34:27,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:34:27,169 INFO L225 Difference]: With dead ends: 814 [2020-10-15 18:34:27,169 INFO L226 Difference]: Without dead ends: 618 [2020-10-15 18:34:27,169 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 18:34:27,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-10-15 18:34:27,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 538. [2020-10-15 18:34:27,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-10-15 18:34:27,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 1706 transitions. [2020-10-15 18:34:27,190 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 1706 transitions. Word has length 14 [2020-10-15 18:34:27,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:34:27,190 INFO L481 AbstractCegarLoop]: Abstraction has 538 states and 1706 transitions. [2020-10-15 18:34:27,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 18:34:27,190 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 1706 transitions. [2020-10-15 18:34:27,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 18:34:27,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:34:27,192 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:34:27,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 18:34:27,192 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:34:27,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:34:27,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1106275611, now seen corresponding path program 1 times [2020-10-15 18:34:27,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:34:27,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428025994] [2020-10-15 18:34:27,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:34:27,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:34:27,238 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 18:34:27,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428025994] [2020-10-15 18:34:27,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:34:27,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 18:34:27,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314412717] [2020-10-15 18:34:27,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 18:34:27,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:34:27,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 18:34:27,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 18:34:27,241 INFO L87 Difference]: Start difference. First operand 538 states and 1706 transitions. Second operand 4 states. [2020-10-15 18:34:27,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:34:27,265 INFO L93 Difference]: Finished difference Result 562 states and 1746 transitions. [2020-10-15 18:34:27,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 18:34:27,266 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-15 18:34:27,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:34:27,270 INFO L225 Difference]: With dead ends: 562 [2020-10-15 18:34:27,271 INFO L226 Difference]: Without dead ends: 514 [2020-10-15 18:34:27,271 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 18:34:27,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-10-15 18:34:27,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 514. [2020-10-15 18:34:27,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514 states. [2020-10-15 18:34:27,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1618 transitions. [2020-10-15 18:34:27,289 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 1618 transitions. Word has length 14 [2020-10-15 18:34:27,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:34:27,289 INFO L481 AbstractCegarLoop]: Abstraction has 514 states and 1618 transitions. [2020-10-15 18:34:27,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 18:34:27,290 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 1618 transitions. [2020-10-15 18:34:27,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 18:34:27,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:34:27,291 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:34:27,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 18:34:27,292 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:34:27,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:34:27,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1523462552, now seen corresponding path program 1 times [2020-10-15 18:34:27,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:34:27,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283811989] [2020-10-15 18:34:27,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:34:27,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:34:27,346 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 18:34:27,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283811989] [2020-10-15 18:34:27,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:34:27,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 18:34:27,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521204636] [2020-10-15 18:34:27,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 18:34:27,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:34:27,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 18:34:27,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 18:34:27,349 INFO L87 Difference]: Start difference. First operand 514 states and 1618 transitions. Second operand 5 states. [2020-10-15 18:34:27,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:34:27,388 INFO L93 Difference]: Finished difference Result 778 states and 2412 transitions. [2020-10-15 18:34:27,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 18:34:27,389 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-15 18:34:27,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:34:27,392 INFO L225 Difference]: With dead ends: 778 [2020-10-15 18:34:27,392 INFO L226 Difference]: Without dead ends: 418 [2020-10-15 18:34:27,392 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 18:34:27,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-10-15 18:34:27,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2020-10-15 18:34:27,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-10-15 18:34:27,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 1276 transitions. [2020-10-15 18:34:27,407 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 1276 transitions. Word has length 15 [2020-10-15 18:34:27,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:34:27,407 INFO L481 AbstractCegarLoop]: Abstraction has 418 states and 1276 transitions. [2020-10-15 18:34:27,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 18:34:27,407 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 1276 transitions. [2020-10-15 18:34:27,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 18:34:27,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:34:27,409 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:34:27,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 18:34:27,409 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:34:27,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:34:27,409 INFO L82 PathProgramCache]: Analyzing trace with hash -99110680, now seen corresponding path program 2 times [2020-10-15 18:34:27,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:34:27,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63702696] [2020-10-15 18:34:27,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:34:27,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:34:27,446 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 18:34:27,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63702696] [2020-10-15 18:34:27,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:34:27,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 18:34:27,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447296239] [2020-10-15 18:34:27,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 18:34:27,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:34:27,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 18:34:27,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 18:34:27,448 INFO L87 Difference]: Start difference. First operand 418 states and 1276 transitions. Second operand 4 states. [2020-10-15 18:34:27,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:34:27,479 INFO L93 Difference]: Finished difference Result 598 states and 1736 transitions. [2020-10-15 18:34:27,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 18:34:27,480 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-15 18:34:27,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:34:27,483 INFO L225 Difference]: With dead ends: 598 [2020-10-15 18:34:27,483 INFO L226 Difference]: Without dead ends: 442 [2020-10-15 18:34:27,484 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 18:34:27,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-10-15 18:34:27,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 394. [2020-10-15 18:34:27,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-10-15 18:34:27,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1140 transitions. [2020-10-15 18:34:27,498 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1140 transitions. Word has length 15 [2020-10-15 18:34:27,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:34:27,499 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 1140 transitions. [2020-10-15 18:34:27,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 18:34:27,499 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1140 transitions. [2020-10-15 18:34:27,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 18:34:27,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:34:27,500 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:34:27,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 18:34:27,501 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:34:27,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:34:27,501 INFO L82 PathProgramCache]: Analyzing trace with hash -96752386, now seen corresponding path program 1 times [2020-10-15 18:34:27,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:34:27,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156893957] [2020-10-15 18:34:27,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:34:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:34:27,554 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 18:34:27,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156893957] [2020-10-15 18:34:27,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:34:27,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 18:34:27,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280537074] [2020-10-15 18:34:27,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 18:34:27,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:34:27,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 18:34:27,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 18:34:27,557 INFO L87 Difference]: Start difference. First operand 394 states and 1140 transitions. Second operand 5 states. [2020-10-15 18:34:27,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:34:27,599 INFO L93 Difference]: Finished difference Result 542 states and 1518 transitions. [2020-10-15 18:34:27,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 18:34:27,600 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-15 18:34:27,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:34:27,602 INFO L225 Difference]: With dead ends: 542 [2020-10-15 18:34:27,602 INFO L226 Difference]: Without dead ends: 254 [2020-10-15 18:34:27,603 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 18:34:27,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-15 18:34:27,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2020-10-15 18:34:27,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-15 18:34:27,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 691 transitions. [2020-10-15 18:34:27,614 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 691 transitions. Word has length 15 [2020-10-15 18:34:27,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:34:27,615 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 691 transitions. [2020-10-15 18:34:27,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 18:34:27,615 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 691 transitions. [2020-10-15 18:34:27,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 18:34:27,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:34:27,616 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:34:27,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 18:34:27,617 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:34:27,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:34:27,617 INFO L82 PathProgramCache]: Analyzing trace with hash 807678122, now seen corresponding path program 2 times [2020-10-15 18:34:27,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:34:27,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317021886] [2020-10-15 18:34:27,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:34:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:34:27,729 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 18:34:27,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317021886] [2020-10-15 18:34:27,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:34:27,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 18:34:27,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799855192] [2020-10-15 18:34:27,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 18:34:27,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:34:27,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 18:34:27,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 18:34:27,732 INFO L87 Difference]: Start difference. First operand 254 states and 691 transitions. Second operand 4 states. [2020-10-15 18:34:27,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:34:27,769 INFO L93 Difference]: Finished difference Result 302 states and 756 transitions. [2020-10-15 18:34:27,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 18:34:27,769 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-15 18:34:27,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:34:27,771 INFO L225 Difference]: With dead ends: 302 [2020-10-15 18:34:27,771 INFO L226 Difference]: Without dead ends: 229 [2020-10-15 18:34:27,772 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 18:34:27,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-15 18:34:27,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2020-10-15 18:34:27,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-15 18:34:27,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 581 transitions. [2020-10-15 18:34:27,779 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 581 transitions. Word has length 15 [2020-10-15 18:34:27,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:34:27,780 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 581 transitions. [2020-10-15 18:34:27,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 18:34:27,781 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 581 transitions. [2020-10-15 18:34:27,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-15 18:34:27,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:34:27,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:34:27,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 18:34:27,782 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:34:27,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:34:27,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1481069530, now seen corresponding path program 1 times [2020-10-15 18:34:27,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:34:27,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689994526] [2020-10-15 18:34:27,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:34:27,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:34:27,860 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 18:34:27,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689994526] [2020-10-15 18:34:27,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:34:27,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 18:34:27,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470633410] [2020-10-15 18:34:27,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 18:34:27,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:34:27,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 18:34:27,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 18:34:27,863 INFO L87 Difference]: Start difference. First operand 229 states and 581 transitions. Second operand 5 states. [2020-10-15 18:34:27,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:34:27,918 INFO L93 Difference]: Finished difference Result 227 states and 514 transitions. [2020-10-15 18:34:27,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 18:34:27,919 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-15 18:34:27,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:34:27,921 INFO L225 Difference]: With dead ends: 227 [2020-10-15 18:34:27,921 INFO L226 Difference]: Without dead ends: 171 [2020-10-15 18:34:27,922 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 18:34:27,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-15 18:34:27,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-10-15 18:34:27,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-15 18:34:27,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 378 transitions. [2020-10-15 18:34:27,929 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 378 transitions. Word has length 16 [2020-10-15 18:34:27,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:34:27,929 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 378 transitions. [2020-10-15 18:34:27,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 18:34:27,929 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 378 transitions. [2020-10-15 18:34:27,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 18:34:27,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:34:27,930 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 18:34:27,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 18:34:27,931 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:34:27,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:34:27,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1331262194, now seen corresponding path program 1 times [2020-10-15 18:34:27,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:34:27,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540907789] [2020-10-15 18:34:27,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:34:27,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:34:28,018 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 18:34:28,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540907789] [2020-10-15 18:34:28,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:34:28,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 18:34:28,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936971889] [2020-10-15 18:34:28,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 18:34:28,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:34:28,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 18:34:28,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 18:34:28,021 INFO L87 Difference]: Start difference. First operand 171 states and 378 transitions. Second operand 6 states. [2020-10-15 18:34:28,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:34:28,080 INFO L93 Difference]: Finished difference Result 147 states and 307 transitions. [2020-10-15 18:34:28,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 18:34:28,081 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-15 18:34:28,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:34:28,082 INFO L225 Difference]: With dead ends: 147 [2020-10-15 18:34:28,082 INFO L226 Difference]: Without dead ends: 107 [2020-10-15 18:34:28,083 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 18:34:28,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-15 18:34:28,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-10-15 18:34:28,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-15 18:34:28,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 217 transitions. [2020-10-15 18:34:28,087 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 217 transitions. Word has length 17 [2020-10-15 18:34:28,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:34:28,087 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 217 transitions. [2020-10-15 18:34:28,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 18:34:28,088 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 217 transitions. [2020-10-15 18:34:28,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 18:34:28,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:34:28,088 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 18:34:28,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 18:34:28,089 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:34:28,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:34:28,089 INFO L82 PathProgramCache]: Analyzing trace with hash 461519417, now seen corresponding path program 1 times [2020-10-15 18:34:28,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:34:28,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750127238] [2020-10-15 18:34:28,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:34:28,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:34:28,155 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 18:34:28,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750127238] [2020-10-15 18:34:28,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:34:28,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 18:34:28,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808226508] [2020-10-15 18:34:28,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 18:34:28,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:34:28,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 18:34:28,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 18:34:28,157 INFO L87 Difference]: Start difference. First operand 107 states and 217 transitions. Second operand 5 states. [2020-10-15 18:34:28,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:34:28,191 INFO L93 Difference]: Finished difference Result 121 states and 234 transitions. [2020-10-15 18:34:28,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 18:34:28,191 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-15 18:34:28,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:34:28,192 INFO L225 Difference]: With dead ends: 121 [2020-10-15 18:34:28,192 INFO L226 Difference]: Without dead ends: 105 [2020-10-15 18:34:28,193 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 18:34:28,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-15 18:34:28,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2020-10-15 18:34:28,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-15 18:34:28,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 205 transitions. [2020-10-15 18:34:28,197 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 205 transitions. Word has length 19 [2020-10-15 18:34:28,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:34:28,197 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 205 transitions. [2020-10-15 18:34:28,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 18:34:28,198 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 205 transitions. [2020-10-15 18:34:28,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 18:34:28,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:34:28,199 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 18:34:28,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 18:34:28,199 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:34:28,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:34:28,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1319799301, now seen corresponding path program 2 times [2020-10-15 18:34:28,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:34:28,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205193584] [2020-10-15 18:34:28,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:34:28,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:34:28,305 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 18:34:28,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205193584] [2020-10-15 18:34:28,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:34:28,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 18:34:28,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445471794] [2020-10-15 18:34:28,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 18:34:28,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:34:28,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 18:34:28,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 18:34:28,308 INFO L87 Difference]: Start difference. First operand 103 states and 205 transitions. Second operand 7 states. [2020-10-15 18:34:28,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:34:28,358 INFO L93 Difference]: Finished difference Result 93 states and 190 transitions. [2020-10-15 18:34:28,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 18:34:28,358 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-15 18:34:28,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:34:28,359 INFO L225 Difference]: With dead ends: 93 [2020-10-15 18:34:28,359 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 18:34:28,359 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 18:34:28,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 18:34:28,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 18:34:28,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 18:34:28,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 18:34:28,360 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-10-15 18:34:28,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:34:28,360 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 18:34:28,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 18:34:28,361 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 18:34:28,361 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 18:34:28,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 18:34:28,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 06:34:28 BasicIcfg [2020-10-15 18:34:28,366 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 18:34:28,369 INFO L168 Benchmark]: Toolchain (without parser) took 5351.54 ms. Allocated memory was 249.0 MB in the beginning and 431.0 MB in the end (delta: 181.9 MB). Free memory was 202.9 MB in the beginning and 310.2 MB in the end (delta: -107.3 MB). Peak memory consumption was 74.6 MB. Max. memory is 14.2 GB. [2020-10-15 18:34:28,370 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 249.0 MB. Free memory was 224.6 MB in the beginning and 223.7 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. [2020-10-15 18:34:28,372 INFO L168 Benchmark]: CACSL2BoogieTranslator took 721.67 ms. Allocated memory was 249.0 MB in the beginning and 306.2 MB in the end (delta: 57.1 MB). Free memory was 202.9 MB in the beginning and 261.3 MB in the end (delta: -58.4 MB). Peak memory consumption was 31.9 MB. Max. memory is 14.2 GB. [2020-10-15 18:34:28,373 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.22 ms. Allocated memory is still 306.2 MB. Free memory was 261.3 MB in the beginning and 259.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-15 18:34:28,373 INFO L168 Benchmark]: Boogie Preprocessor took 26.35 ms. Allocated memory is still 306.2 MB. Free memory was 259.6 MB in the beginning and 257.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-15 18:34:28,374 INFO L168 Benchmark]: RCFGBuilder took 442.53 ms. Allocated memory is still 306.2 MB. Free memory was 257.9 MB in the beginning and 233.4 MB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 14.2 GB. [2020-10-15 18:34:28,375 INFO L168 Benchmark]: TraceAbstraction took 4109.02 ms. Allocated memory was 306.2 MB in the beginning and 431.0 MB in the end (delta: 124.8 MB). Free memory was 232.6 MB in the beginning and 310.2 MB in the end (delta: -77.6 MB). Peak memory consumption was 47.2 MB. Max. memory is 14.2 GB. [2020-10-15 18:34:28,378 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 249.0 MB. Free memory was 224.6 MB in the beginning and 223.7 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 721.67 ms. Allocated memory was 249.0 MB in the beginning and 306.2 MB in the end (delta: 57.1 MB). Free memory was 202.9 MB in the beginning and 261.3 MB in the end (delta: -58.4 MB). Peak memory consumption was 31.9 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 47.22 ms. Allocated memory is still 306.2 MB. Free memory was 261.3 MB in the beginning and 259.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 26.35 ms. Allocated memory is still 306.2 MB. Free memory was 259.6 MB in the beginning and 257.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * RCFGBuilder took 442.53 ms. Allocated memory is still 306.2 MB. Free memory was 257.9 MB in the beginning and 233.4 MB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 14.2 GB. * TraceAbstraction took 4109.02 ms. Allocated memory was 306.2 MB in the beginning and 431.0 MB in the end (delta: 124.8 MB). Free memory was 232.6 MB in the beginning and 310.2 MB in the end (delta: -77.6 MB). Peak memory consumption was 47.2 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: 3.9s, OverallIterations: 14, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 369 SDtfs, 330 SDslu, 594 SDs, 0 SdLazy, 226 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 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, 14 MinimizatonAttempts, 130 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 205 NumberOfCodeBlocks, 205 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 191 ConstructedInterpolants, 0 QuantifiedInterpolants, 8005 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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...