/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 22:08:40,749 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 22:08:40,751 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 22:08:40,782 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 22:08:40,782 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 22:08:40,784 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 22:08:40,785 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 22:08:40,792 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 22:08:40,794 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 22:08:40,796 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 22:08:40,798 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 22:08:40,800 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 22:08:40,800 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 22:08:40,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 22:08:40,804 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 22:08:40,805 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 22:08:40,806 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 22:08:40,807 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 22:08:40,809 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 22:08:40,813 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 22:08:40,815 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 22:08:40,817 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 22:08:40,819 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 22:08:40,819 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 22:08:40,822 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 22:08:40,822 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 22:08:40,823 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 22:08:40,826 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 22:08:40,826 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 22:08:40,827 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 22:08:40,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 22:08:40,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 22:08:40,829 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 22:08:40,831 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 22:08:40,838 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 22:08:40,839 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 22:08:40,839 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 22:08:40,839 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 22:08:40,840 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 22:08:40,842 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 22:08:40,843 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 22:08:40,844 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-10-15 22:08:40,883 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 22:08:40,883 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 22:08:40,884 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 22:08:40,885 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 22:08:40,885 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 22:08:40,885 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 22:08:40,885 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 22:08:40,886 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 22:08:40,886 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 22:08:40,886 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 22:08:40,887 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 22:08:40,887 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 22:08:40,887 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 22:08:40,888 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 22:08:40,888 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 22:08:40,889 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 22:08:40,889 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 22:08:40,889 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 22:08:40,889 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 22:08:40,889 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 22:08:40,890 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 22:08:40,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 22:08:40,890 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 22:08:40,890 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 22:08:40,890 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 22:08:40,891 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 22:08:40,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 22:08:40,891 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 22:08:40,891 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 22:08:41,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 22:08:41,185 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 22:08:41,189 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 22:08:41,190 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 22:08:41,192 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 22:08:41,193 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.opt.i [2020-10-15 22:08:41,256 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/422b0ebea/2ccb507dca6e4c39b9e0edfbd2b14555/FLAG6cdbb9b03 [2020-10-15 22:08:41,737 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 22:08:41,738 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.opt.i [2020-10-15 22:08:41,751 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/422b0ebea/2ccb507dca6e4c39b9e0edfbd2b14555/FLAG6cdbb9b03 [2020-10-15 22:08:42,053 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/422b0ebea/2ccb507dca6e4c39b9e0edfbd2b14555 [2020-10-15 22:08:42,060 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 22:08:42,062 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 22:08:42,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 22:08:42,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 22:08:42,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 22:08:42,067 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 10:08:42" (1/1) ... [2020-10-15 22:08:42,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77c441a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:08:42, skipping insertion in model container [2020-10-15 22:08:42,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 10:08:42" (1/1) ... [2020-10-15 22:08:42,077 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 22:08:42,116 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 22:08:42,597 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 22:08:42,611 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 22:08:42,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 22:08:42,736 INFO L208 MainTranslator]: Completed translation [2020-10-15 22:08:42,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:08:42 WrapperNode [2020-10-15 22:08:42,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 22:08:42,738 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 22:08:42,738 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 22:08:42,738 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 22:08:42,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:08:42" (1/1) ... [2020-10-15 22:08:42,762 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:08:42" (1/1) ... [2020-10-15 22:08:42,782 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 22:08:42,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 22:08:42,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 22:08:42,783 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 22:08:42,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:08:42" (1/1) ... [2020-10-15 22:08:42,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:08:42" (1/1) ... [2020-10-15 22:08:42,794 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:08:42" (1/1) ... [2020-10-15 22:08:42,794 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:08:42" (1/1) ... [2020-10-15 22:08:42,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:08:42" (1/1) ... [2020-10-15 22:08:42,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:08:42" (1/1) ... [2020-10-15 22:08:42,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:08:42" (1/1) ... [2020-10-15 22:08:42,807 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 22:08:42,807 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 22:08:42,807 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 22:08:42,807 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 22:08:42,808 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:08:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 22:08:42,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 22:08:42,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-15 22:08:42,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 22:08:42,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 22:08:42,867 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-15 22:08:42,867 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-15 22:08:42,868 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-15 22:08:42,868 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-15 22:08:42,868 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-15 22:08:42,868 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-15 22:08:42,868 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-15 22:08:42,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 22:08:42,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 22:08:42,870 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 22:08:43,218 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 22:08:43,218 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-15 22:08:43,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 10:08:43 BoogieIcfgContainer [2020-10-15 22:08:43,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 22:08:43,221 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 22:08:43,221 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 22:08:43,225 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 22:08:43,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 10:08:42" (1/3) ... [2020-10-15 22:08:43,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e8208e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 10:08:43, skipping insertion in model container [2020-10-15 22:08:43,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:08:42" (2/3) ... [2020-10-15 22:08:43,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e8208e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 10:08:43, skipping insertion in model container [2020-10-15 22:08:43,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 10:08:43" (3/3) ... [2020-10-15 22:08:43,228 INFO L111 eAbstractionObserver]: Analyzing ICFG safe004_tso.opt.i [2020-10-15 22:08:43,239 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 22:08:43,239 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 22:08:43,246 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 22:08:43,247 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 22:08:43,273 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:08:43,274 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:08:43,274 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:08:43,274 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:08:43,274 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:08:43,275 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:08:43,275 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:08:43,275 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:08:43,276 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:08:43,276 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:08:43,276 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:08:43,276 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:08:43,277 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:08:43,277 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:08:43,277 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:08:43,277 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:08:43,278 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:08:43,278 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:08:43,282 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:08:43,282 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:08:43,285 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:08:43,286 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:08:43,292 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:08:43,292 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:08:43,293 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:08:43,293 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:08:43,295 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:08:43,295 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:08:43,295 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:08:43,296 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:08:43,308 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-15 22:08:43,324 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 22:08:43,324 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 22:08:43,324 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 22:08:43,324 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 22:08:43,324 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 22:08:43,324 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 22:08:43,324 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 22:08:43,325 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 22:08:43,336 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 22:08:43,338 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-10-15 22:08:43,341 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 69 transitions, 153 flow [2020-10-15 22:08:43,343 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-15 22:08:43,384 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-15 22:08:43,385 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-15 22:08:43,390 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-15 22:08:43,392 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-15 22:08:44,846 INFO L132 LiptonReduction]: Checked pairs total: 2581 [2020-10-15 22:08:44,846 INFO L134 LiptonReduction]: Total number of compositions: 58 [2020-10-15 22:08:44,852 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-15 22:08:44,881 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-15 22:08:44,883 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-15 22:08:44,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-15 22:08:44,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:08:44,892 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:08:44,892 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:08:44,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:08:44,898 INFO L82 PathProgramCache]: Analyzing trace with hash -245765301, now seen corresponding path program 1 times [2020-10-15 22:08:44,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:08:44,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252952291] [2020-10-15 22:08:44,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:08:45,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:08:45,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:08:45,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252952291] [2020-10-15 22:08:45,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:08:45,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 22:08:45,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760140121] [2020-10-15 22:08:45,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 22:08:45,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:08:45,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 22:08:45,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:08:45,159 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-15 22:08:45,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:08:45,207 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-15 22:08:45,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 22:08:45,209 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-15 22:08:45,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:08:45,225 INFO L225 Difference]: With dead ends: 282 [2020-10-15 22:08:45,225 INFO L226 Difference]: Without dead ends: 218 [2020-10-15 22:08:45,226 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:08:45,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-15 22:08:45,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-15 22:08:45,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-15 22:08:45,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-15 22:08:45,292 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-15 22:08:45,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:08:45,293 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-15 22:08:45,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 22:08:45,293 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-15 22:08:45,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 22:08:45,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:08:45,295 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:08:45,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 22:08:45,296 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:08:45,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:08:45,296 INFO L82 PathProgramCache]: Analyzing trace with hash 971209488, now seen corresponding path program 1 times [2020-10-15 22:08:45,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:08:45,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077200965] [2020-10-15 22:08:45,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:08:45,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:08:45,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:08:45,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077200965] [2020-10-15 22:08:45,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:08:45,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:08:45,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931006550] [2020-10-15 22:08:45,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:08:45,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:08:45,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:08:45,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:08:45,428 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-10-15 22:08:45,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:08:45,459 INFO L93 Difference]: Finished difference Result 296 states and 796 transitions. [2020-10-15 22:08:45,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 22:08:45,460 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-15 22:08:45,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:08:45,462 INFO L225 Difference]: With dead ends: 296 [2020-10-15 22:08:45,463 INFO L226 Difference]: Without dead ends: 200 [2020-10-15 22:08:45,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:08:45,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-15 22:08:45,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2020-10-15 22:08:45,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-10-15 22:08:45,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 536 transitions. [2020-10-15 22:08:45,482 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 536 transitions. Word has length 9 [2020-10-15 22:08:45,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:08:45,483 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 536 transitions. [2020-10-15 22:08:45,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:08:45,483 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 536 transitions. [2020-10-15 22:08:45,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 22:08:45,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:08:45,484 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:08:45,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 22:08:45,485 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:08:45,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:08:45,485 INFO L82 PathProgramCache]: Analyzing trace with hash -222134721, now seen corresponding path program 1 times [2020-10-15 22:08:45,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:08:45,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626063961] [2020-10-15 22:08:45,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:08:45,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:08:45,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:08:45,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626063961] [2020-10-15 22:08:45,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:08:45,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:08:45,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887004586] [2020-10-15 22:08:45,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:08:45,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:08:45,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:08:45,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:08:45,556 INFO L87 Difference]: Start difference. First operand 200 states and 536 transitions. Second operand 4 states. [2020-10-15 22:08:45,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:08:45,600 INFO L93 Difference]: Finished difference Result 314 states and 804 transitions. [2020-10-15 22:08:45,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:08:45,601 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-15 22:08:45,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:08:45,604 INFO L225 Difference]: With dead ends: 314 [2020-10-15 22:08:45,604 INFO L226 Difference]: Without dead ends: 182 [2020-10-15 22:08:45,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:08:45,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-15 22:08:45,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 146. [2020-10-15 22:08:45,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-15 22:08:45,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 354 transitions. [2020-10-15 22:08:45,626 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 354 transitions. Word has length 10 [2020-10-15 22:08:45,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:08:45,627 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 354 transitions. [2020-10-15 22:08:45,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:08:45,627 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 354 transitions. [2020-10-15 22:08:45,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 22:08:45,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:08:45,628 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:08:45,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 22:08:45,629 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:08:45,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:08:45,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1304596236, now seen corresponding path program 1 times [2020-10-15 22:08:45,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:08:45,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451794565] [2020-10-15 22:08:45,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:08:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:08:45,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:08:45,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451794565] [2020-10-15 22:08:45,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:08:45,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:08:45,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126536055] [2020-10-15 22:08:45,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 22:08:45,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:08:45,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 22:08:45,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:08:45,674 INFO L87 Difference]: Start difference. First operand 146 states and 354 transitions. Second operand 3 states. [2020-10-15 22:08:45,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:08:45,686 INFO L93 Difference]: Finished difference Result 176 states and 419 transitions. [2020-10-15 22:08:45,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 22:08:45,687 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-15 22:08:45,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:08:45,688 INFO L225 Difference]: With dead ends: 176 [2020-10-15 22:08:45,688 INFO L226 Difference]: Without dead ends: 86 [2020-10-15 22:08:45,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:08:45,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-15 22:08:45,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-10-15 22:08:45,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-15 22:08:45,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 199 transitions. [2020-10-15 22:08:45,695 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 199 transitions. Word has length 11 [2020-10-15 22:08:45,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:08:45,696 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 199 transitions. [2020-10-15 22:08:45,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 22:08:45,696 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 199 transitions. [2020-10-15 22:08:45,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 22:08:45,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:08:45,697 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:08:45,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 22:08:45,697 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:08:45,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:08:45,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1787778239, now seen corresponding path program 1 times [2020-10-15 22:08:45,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:08:45,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954735322] [2020-10-15 22:08:45,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:08:45,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:08:45,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:08:45,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954735322] [2020-10-15 22:08:45,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:08:45,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 22:08:45,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414631372] [2020-10-15 22:08:45,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 22:08:45,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:08:45,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 22:08:45,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:08:45,733 INFO L87 Difference]: Start difference. First operand 86 states and 199 transitions. Second operand 3 states. [2020-10-15 22:08:45,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:08:45,738 INFO L93 Difference]: Finished difference Result 80 states and 180 transitions. [2020-10-15 22:08:45,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 22:08:45,738 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-15 22:08:45,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:08:45,739 INFO L225 Difference]: With dead ends: 80 [2020-10-15 22:08:45,740 INFO L226 Difference]: Without dead ends: 80 [2020-10-15 22:08:45,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:08:45,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-15 22:08:45,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-10-15 22:08:45,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-15 22:08:45,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 180 transitions. [2020-10-15 22:08:45,745 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 180 transitions. Word has length 12 [2020-10-15 22:08:45,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:08:45,745 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 180 transitions. [2020-10-15 22:08:45,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 22:08:45,746 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 180 transitions. [2020-10-15 22:08:45,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 22:08:45,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:08:45,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:08:45,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 22:08:45,747 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:08:45,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:08:45,748 INFO L82 PathProgramCache]: Analyzing trace with hash 413447767, now seen corresponding path program 1 times [2020-10-15 22:08:45,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:08:45,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580354423] [2020-10-15 22:08:45,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:08:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:08:45,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:08:45,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580354423] [2020-10-15 22:08:45,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:08:45,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:08:45,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156745679] [2020-10-15 22:08:45,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:08:45,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:08:45,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:08:45,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:08:45,782 INFO L87 Difference]: Start difference. First operand 80 states and 180 transitions. Second operand 4 states. [2020-10-15 22:08:45,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:08:45,800 INFO L93 Difference]: Finished difference Result 104 states and 232 transitions. [2020-10-15 22:08:45,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 22:08:45,800 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-15 22:08:45,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:08:45,801 INFO L225 Difference]: With dead ends: 104 [2020-10-15 22:08:45,801 INFO L226 Difference]: Without dead ends: 68 [2020-10-15 22:08:45,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:08:45,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-15 22:08:45,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-15 22:08:45,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-15 22:08:45,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-10-15 22:08:45,806 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 13 [2020-10-15 22:08:45,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:08:45,806 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-10-15 22:08:45,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:08:45,807 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-10-15 22:08:45,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 22:08:45,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:08:45,808 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:08:45,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 22:08:45,808 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:08:45,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:08:45,808 INFO L82 PathProgramCache]: Analyzing trace with hash 413415217, now seen corresponding path program 2 times [2020-10-15 22:08:45,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:08:45,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748163305] [2020-10-15 22:08:45,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:08:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:08:45,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:08:45,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748163305] [2020-10-15 22:08:45,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:08:45,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:08:45,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582949061] [2020-10-15 22:08:45,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:08:45,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:08:45,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:08:45,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:08:45,868 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 4 states. [2020-10-15 22:08:45,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:08:45,895 INFO L93 Difference]: Finished difference Result 81 states and 157 transitions. [2020-10-15 22:08:45,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:08:45,896 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-15 22:08:45,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:08:45,897 INFO L225 Difference]: With dead ends: 81 [2020-10-15 22:08:45,897 INFO L226 Difference]: Without dead ends: 59 [2020-10-15 22:08:45,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:08:45,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-15 22:08:45,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-15 22:08:45,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-15 22:08:45,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-10-15 22:08:45,901 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 13 [2020-10-15 22:08:45,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:08:45,901 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-10-15 22:08:45,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:08:45,901 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-10-15 22:08:45,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 22:08:45,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:08:45,902 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:08:45,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 22:08:45,902 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:08:45,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:08:45,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1574125730, now seen corresponding path program 1 times [2020-10-15 22:08:45,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:08:45,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488490452] [2020-10-15 22:08:45,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:08:45,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:08:45,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:08:45,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488490452] [2020-10-15 22:08:45,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:08:45,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:08:45,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265893640] [2020-10-15 22:08:45,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 22:08:45,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:08:45,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 22:08:45,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:08:45,971 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 5 states. [2020-10-15 22:08:46,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:08:46,011 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2020-10-15 22:08:46,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 22:08:46,012 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-15 22:08:46,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:08:46,012 INFO L225 Difference]: With dead ends: 60 [2020-10-15 22:08:46,013 INFO L226 Difference]: Without dead ends: 45 [2020-10-15 22:08:46,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 22:08:46,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-15 22:08:46,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-15 22:08:46,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-15 22:08:46,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-10-15 22:08:46,015 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 14 [2020-10-15 22:08:46,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:08:46,016 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-10-15 22:08:46,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 22:08:46,016 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-10-15 22:08:46,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 22:08:46,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:08:46,020 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:08:46,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 22:08:46,021 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:08:46,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:08:46,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1126720068, now seen corresponding path program 1 times [2020-10-15 22:08:46,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:08:46,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288285803] [2020-10-15 22:08:46,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:08:46,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:08:46,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:08:46,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288285803] [2020-10-15 22:08:46,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:08:46,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 22:08:46,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33671558] [2020-10-15 22:08:46,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 22:08:46,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:08:46,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 22:08:46,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 22:08:46,114 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 6 states. [2020-10-15 22:08:46,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:08:46,174 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-10-15 22:08:46,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 22:08:46,175 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-15 22:08:46,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:08:46,176 INFO L225 Difference]: With dead ends: 42 [2020-10-15 22:08:46,176 INFO L226 Difference]: Without dead ends: 36 [2020-10-15 22:08:46,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-15 22:08:46,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-15 22:08:46,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-15 22:08:46,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-15 22:08:46,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-10-15 22:08:46,178 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-10-15 22:08:46,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:08:46,179 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-10-15 22:08:46,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 22:08:46,179 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-10-15 22:08:46,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 22:08:46,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:08:46,180 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:08:46,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 22:08:46,180 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:08:46,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:08:46,181 INFO L82 PathProgramCache]: Analyzing trace with hash 392863110, now seen corresponding path program 1 times [2020-10-15 22:08:46,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:08:46,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783149014] [2020-10-15 22:08:46,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:08:46,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:08:46,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:08:46,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783149014] [2020-10-15 22:08:46,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:08:46,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:08:46,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89204602] [2020-10-15 22:08:46,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 22:08:46,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:08:46,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 22:08:46,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:08:46,204 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 3 states. [2020-10-15 22:08:46,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:08:46,208 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-10-15 22:08:46,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 22:08:46,209 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-15 22:08:46,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:08:46,209 INFO L225 Difference]: With dead ends: 35 [2020-10-15 22:08:46,209 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 22:08:46,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:08:46,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 22:08:46,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 22:08:46,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 22:08:46,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 22:08:46,210 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-15 22:08:46,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:08:46,210 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 22:08:46,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 22:08:46,211 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 22:08:46,211 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 22:08:46,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 22:08:46,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 10:08:46 BasicIcfg [2020-10-15 22:08:46,214 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 22:08:46,217 INFO L168 Benchmark]: Toolchain (without parser) took 4154.61 ms. Allocated memory was 246.9 MB in the beginning and 366.0 MB in the end (delta: 119.0 MB). Free memory was 200.4 MB in the beginning and 234.5 MB in the end (delta: -34.1 MB). Peak memory consumption was 84.9 MB. Max. memory is 14.2 GB. [2020-10-15 22:08:46,217 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 246.9 MB. Free memory is still 220.8 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 22:08:46,218 INFO L168 Benchmark]: CACSL2BoogieTranslator took 674.87 ms. Allocated memory was 246.9 MB in the beginning and 301.5 MB in the end (delta: 54.5 MB). Free memory was 200.4 MB in the beginning and 254.1 MB in the end (delta: -53.7 MB). Peak memory consumption was 30.4 MB. Max. memory is 14.2 GB. [2020-10-15 22:08:46,219 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.28 ms. Allocated memory is still 301.5 MB. Free memory is still 254.1 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 22:08:46,219 INFO L168 Benchmark]: Boogie Preprocessor took 24.40 ms. Allocated memory is still 301.5 MB. Free memory was 254.1 MB in the beginning and 251.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 22:08:46,220 INFO L168 Benchmark]: RCFGBuilder took 413.21 ms. Allocated memory is still 301.5 MB. Free memory was 251.6 MB in the beginning and 229.7 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. [2020-10-15 22:08:46,221 INFO L168 Benchmark]: TraceAbstraction took 2993.13 ms. Allocated memory was 301.5 MB in the beginning and 366.0 MB in the end (delta: 64.5 MB). Free memory was 229.7 MB in the beginning and 234.5 MB in the end (delta: -4.8 MB). Peak memory consumption was 59.6 MB. Max. memory is 14.2 GB. [2020-10-15 22:08:46,225 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 246.9 MB. Free memory is still 220.8 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 674.87 ms. Allocated memory was 246.9 MB in the beginning and 301.5 MB in the end (delta: 54.5 MB). Free memory was 200.4 MB in the beginning and 254.1 MB in the end (delta: -53.7 MB). Peak memory consumption was 30.4 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 44.28 ms. Allocated memory is still 301.5 MB. Free memory is still 254.1 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Preprocessor took 24.40 ms. Allocated memory is still 301.5 MB. Free memory was 254.1 MB in the beginning and 251.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 413.21 ms. Allocated memory is still 301.5 MB. Free memory was 251.6 MB in the beginning and 229.7 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2993.13 ms. Allocated memory was 301.5 MB in the beginning and 366.0 MB in the end (delta: 64.5 MB). Free memory was 229.7 MB in the beginning and 234.5 MB in the end (delta: -4.8 MB). Peak memory consumption was 59.6 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 819 VarBasedMoverChecksPositive, 36 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 60 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.5s, 77 PlacesBefore, 31 PlacesAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 58 TotalNumberOfCompositions, 2581 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 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 193 SDtfs, 137 SDslu, 200 SDs, 0 SdLazy, 124 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 36 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 3668 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...