/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe027_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-18 01:46:50,711 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-18 01:46:50,716 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-18 01:46:50,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-18 01:46:50,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-18 01:46:50,773 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-18 01:46:50,775 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-18 01:46:50,779 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-18 01:46:50,781 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-18 01:46:50,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-18 01:46:50,783 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-18 01:46:50,787 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-18 01:46:50,788 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-18 01:46:50,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-18 01:46:50,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-18 01:46:50,795 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-18 01:46:50,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-18 01:46:50,800 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-18 01:46:50,802 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-18 01:46:50,810 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-18 01:46:50,813 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-18 01:46:50,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-18 01:46:50,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-18 01:46:50,817 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-18 01:46:50,822 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-18 01:46:50,822 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-18 01:46:50,822 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-18 01:46:50,825 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-18 01:46:50,826 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-18 01:46:50,828 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-18 01:46:50,829 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-18 01:46:50,829 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-18 01:46:50,830 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-18 01:46:50,831 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-18 01:46:50,832 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-18 01:46:50,833 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-18 01:46:50,834 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-18 01:46:50,834 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-18 01:46:50,834 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-18 01:46:50,835 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-18 01:46:50,837 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-18 01:46:50,838 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-18 01:46:50,890 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-18 01:46:50,890 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-18 01:46:50,893 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-18 01:46:50,893 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-18 01:46:50,893 INFO L138 SettingsManager]: * Use SBE=true [2020-09-18 01:46:50,893 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-18 01:46:50,894 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-18 01:46:50,894 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-18 01:46:50,894 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-18 01:46:50,895 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-18 01:46:50,896 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-18 01:46:50,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-18 01:46:50,896 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-18 01:46:50,897 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-18 01:46:50,897 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-18 01:46:50,897 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-18 01:46:50,897 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-18 01:46:50,898 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-18 01:46:50,898 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-18 01:46:50,898 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-18 01:46:50,898 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-18 01:46:50,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-18 01:46:50,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-18 01:46:50,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-18 01:46:50,899 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-18 01:46:50,899 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-18 01:46:50,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-18 01:46:50,900 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-18 01:46:50,900 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-18 01:46:50,900 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-18 01:46:50,900 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-18 01:46:51,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-18 01:46:51,387 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-18 01:46:51,393 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-18 01:46:51,396 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-18 01:46:51,396 INFO L275 PluginConnector]: CDTParser initialized [2020-09-18 01:46:51,398 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe027_pso.oepc.i [2020-09-18 01:46:51,483 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c6948538/656c8a19e2454a0d95310d107dc7a3c6/FLAGe737f25db [2020-09-18 01:46:52,161 INFO L306 CDTParser]: Found 1 translation units. [2020-09-18 01:46:52,162 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe027_pso.oepc.i [2020-09-18 01:46:52,180 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c6948538/656c8a19e2454a0d95310d107dc7a3c6/FLAGe737f25db [2020-09-18 01:46:52,383 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c6948538/656c8a19e2454a0d95310d107dc7a3c6 [2020-09-18 01:46:52,397 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-18 01:46:52,402 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-18 01:46:52,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-18 01:46:52,403 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-18 01:46:52,407 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-18 01:46:52,409 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 01:46:52" (1/1) ... [2020-09-18 01:46:52,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@462e4a5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:46:52, skipping insertion in model container [2020-09-18 01:46:52,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 01:46:52" (1/1) ... [2020-09-18 01:46:52,423 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-18 01:46:52,482 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-18 01:46:53,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 01:46:53,054 INFO L203 MainTranslator]: Completed pre-run [2020-09-18 01:46:53,103 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 01:46:53,189 INFO L208 MainTranslator]: Completed translation [2020-09-18 01:46:53,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:46:53 WrapperNode [2020-09-18 01:46:53,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-18 01:46:53,191 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-18 01:46:53,191 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-18 01:46:53,192 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-18 01:46:53,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:46:53" (1/1) ... [2020-09-18 01:46:53,232 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:46:53" (1/1) ... [2020-09-18 01:46:53,258 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-18 01:46:53,259 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-18 01:46:53,259 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-18 01:46:53,259 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-18 01:46:53,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:46:53" (1/1) ... [2020-09-18 01:46:53,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:46:53" (1/1) ... [2020-09-18 01:46:53,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:46:53" (1/1) ... [2020-09-18 01:46:53,272 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:46:53" (1/1) ... [2020-09-18 01:46:53,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:46:53" (1/1) ... [2020-09-18 01:46:53,284 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:46:53" (1/1) ... [2020-09-18 01:46:53,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:46:53" (1/1) ... [2020-09-18 01:46:53,290 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-18 01:46:53,291 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-18 01:46:53,291 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-18 01:46:53,291 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-18 01:46:53,292 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:46:53" (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 [2020-09-18 01:46:53,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-18 01:46:53,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-18 01:46:53,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-18 01:46:53,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-18 01:46:53,370 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-18 01:46:53,370 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-18 01:46:53,370 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-18 01:46:53,370 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-18 01:46:53,371 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-18 01:46:53,371 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-18 01:46:53,371 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-09-18 01:46:53,371 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-09-18 01:46:53,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-18 01:46:53,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-18 01:46:53,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-18 01:46:53,374 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-18 01:46:53,846 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-18 01:46:53,847 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-18 01:46:53,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 01:46:53 BoogieIcfgContainer [2020-09-18 01:46:53,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-18 01:46:53,859 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-18 01:46:53,859 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-18 01:46:53,863 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-18 01:46:53,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 01:46:52" (1/3) ... [2020-09-18 01:46:53,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@466b7607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 01:46:53, skipping insertion in model container [2020-09-18 01:46:53,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:46:53" (2/3) ... [2020-09-18 01:46:53,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@466b7607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 01:46:53, skipping insertion in model container [2020-09-18 01:46:53,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 01:46:53" (3/3) ... [2020-09-18 01:46:53,870 INFO L109 eAbstractionObserver]: Analyzing ICFG safe027_pso.oepc.i [2020-09-18 01:46:53,883 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-18 01:46:53,883 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-18 01:46:53,896 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-18 01:46:53,898 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-18 01:46:53,945 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:46:53,946 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:46:53,946 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:46:53,946 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:46:53,947 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:46:53,947 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:46:53,948 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:46:53,948 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:46:53,948 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:46:53,949 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:46:53,949 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:46:53,950 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:46:53,951 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:46:53,951 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:46:53,952 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:46:53,952 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:46:53,953 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:46:53,954 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:46:53,954 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:46:53,955 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:46:53,955 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:46:53,955 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:46:53,956 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:46:53,957 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:46:53,967 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:46:53,967 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:46:53,968 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:46:53,968 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:46:53,981 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:46:53,981 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:46:53,981 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:46:53,982 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:46:53,984 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:46:53,984 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:46:53,985 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:46:53,985 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:46:53,988 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:46:53,989 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:46:53,989 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:46:53,989 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:46:54,012 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-18 01:46:54,035 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-18 01:46:54,035 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-18 01:46:54,035 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-18 01:46:54,035 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-18 01:46:54,036 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-18 01:46:54,036 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-18 01:46:54,036 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-18 01:46:54,036 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-18 01:46:54,055 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 82 transitions, 184 flow [2020-09-18 01:46:54,057 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 93 places, 82 transitions, 184 flow [2020-09-18 01:46:54,110 INFO L129 PetriNetUnfolder]: 2/78 cut-off events. [2020-09-18 01:46:54,110 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 01:46:54,117 INFO L80 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 78 events. 2/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 61 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-09-18 01:46:54,121 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 93 places, 82 transitions, 184 flow [2020-09-18 01:46:54,145 INFO L129 PetriNetUnfolder]: 2/78 cut-off events. [2020-09-18 01:46:54,145 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 01:46:54,146 INFO L80 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 78 events. 2/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 61 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-09-18 01:46:54,149 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1822 [2020-09-18 01:46:54,151 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-18 01:46:55,616 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2807 [2020-09-18 01:46:55,617 INFO L214 etLargeBlockEncoding]: Total number of compositions: 63 [2020-09-18 01:46:55,621 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-09-18 01:46:55,682 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-09-18 01:46:55,685 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-09-18 01:46:55,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-18 01:46:55,697 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 01:46:55,698 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 01:46:55,699 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 01:46:55,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 01:46:55,707 INFO L82 PathProgramCache]: Analyzing trace with hash 91051740, now seen corresponding path program 1 times [2020-09-18 01:46:55,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 01:46:55,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738918975] [2020-09-18 01:46:55,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 01:46:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 01:46:55,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 01:46:55,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738918975] [2020-09-18 01:46:55,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 01:46:55,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 01:46:55,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1329958921] [2020-09-18 01:46:55,959 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 01:46:55,963 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 01:46:55,982 INFO L274 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-09-18 01:46:55,982 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 01:46:55,984 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 01:46:55,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-18 01:46:55,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 01:46:56,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-18 01:46:56,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-18 01:46:56,008 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-09-18 01:46:56,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 01:46:56,063 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-09-18 01:46:56,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-18 01:46:56,064 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-09-18 01:46:56,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 01:46:56,095 INFO L225 Difference]: With dead ends: 850 [2020-09-18 01:46:56,095 INFO L226 Difference]: Without dead ends: 706 [2020-09-18 01:46:56,097 INFO L675 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 [2020-09-18 01:46:56,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-09-18 01:46:56,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-09-18 01:46:56,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-09-18 01:46:56,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-09-18 01:46:56,242 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-09-18 01:46:56,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 01:46:56,249 INFO L479 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-09-18 01:46:56,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-18 01:46:56,249 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-09-18 01:46:56,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-18 01:46:56,251 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 01:46:56,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 01:46:56,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-18 01:46:56,252 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 01:46:56,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 01:46:56,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1472387704, now seen corresponding path program 1 times [2020-09-18 01:46:56,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 01:46:56,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093108663] [2020-09-18 01:46:56,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 01:46:56,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 01:46:56,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 01:46:56,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093108663] [2020-09-18 01:46:56,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 01:46:56,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 01:46:56,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1913820367] [2020-09-18 01:46:56,453 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 01:46:56,455 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 01:46:56,456 INFO L274 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-09-18 01:46:56,457 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 01:46:56,457 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 01:46:56,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 01:46:56,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 01:46:56,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 01:46:56,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 01:46:56,460 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-09-18 01:46:56,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 01:46:56,503 INFO L93 Difference]: Finished difference Result 778 states and 2592 transitions. [2020-09-18 01:46:56,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-18 01:46:56,504 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-18 01:46:56,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 01:46:56,511 INFO L225 Difference]: With dead ends: 778 [2020-09-18 01:46:56,511 INFO L226 Difference]: Without dead ends: 634 [2020-09-18 01:46:56,512 INFO L675 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 [2020-09-18 01:46:56,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-09-18 01:46:56,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2020-09-18 01:46:56,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2020-09-18 01:46:56,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 2148 transitions. [2020-09-18 01:46:56,538 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 2148 transitions. Word has length 11 [2020-09-18 01:46:56,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 01:46:56,539 INFO L479 AbstractCegarLoop]: Abstraction has 634 states and 2148 transitions. [2020-09-18 01:46:56,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 01:46:56,539 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 2148 transitions. [2020-09-18 01:46:56,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-18 01:46:56,541 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 01:46:56,542 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 01:46:56,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-18 01:46:56,542 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 01:46:56,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 01:46:56,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1606888751, now seen corresponding path program 1 times [2020-09-18 01:46:56,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 01:46:56,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289945502] [2020-09-18 01:46:56,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 01:46:56,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 01:46:56,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 01:46:56,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289945502] [2020-09-18 01:46:56,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 01:46:56,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 01:46:56,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1727976778] [2020-09-18 01:46:56,687 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 01:46:56,688 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 01:46:56,691 INFO L274 McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions. [2020-09-18 01:46:56,691 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 01:46:56,747 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 01:46:56,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-18 01:46:56,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 01:46:56,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-18 01:46:56,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-18 01:46:56,748 INFO L87 Difference]: Start difference. First operand 634 states and 2148 transitions. Second operand 5 states. [2020-09-18 01:46:56,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 01:46:56,834 INFO L93 Difference]: Finished difference Result 814 states and 2703 transitions. [2020-09-18 01:46:56,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-18 01:46:56,836 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-18 01:46:56,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 01:46:56,839 INFO L225 Difference]: With dead ends: 814 [2020-09-18 01:46:56,839 INFO L226 Difference]: Without dead ends: 394 [2020-09-18 01:46:56,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-18 01:46:56,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-09-18 01:46:56,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2020-09-18 01:46:56,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-09-18 01:46:56,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1266 transitions. [2020-09-18 01:46:56,855 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1266 transitions. Word has length 12 [2020-09-18 01:46:56,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 01:46:56,856 INFO L479 AbstractCegarLoop]: Abstraction has 394 states and 1266 transitions. [2020-09-18 01:46:56,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-18 01:46:56,856 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1266 transitions. [2020-09-18 01:46:56,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-18 01:46:56,857 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 01:46:56,857 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 01:46:56,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-18 01:46:56,858 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 01:46:56,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 01:46:56,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1921114608, now seen corresponding path program 1 times [2020-09-18 01:46:56,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 01:46:56,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941413351] [2020-09-18 01:46:56,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 01:46:56,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 01:46:56,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 01:46:56,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941413351] [2020-09-18 01:46:56,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 01:46:56,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 01:46:56,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1210383139] [2020-09-18 01:46:56,979 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 01:46:56,980 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 01:46:56,983 INFO L274 McrAutomatonBuilder]: Finished intersection with 16 states and 17 transitions. [2020-09-18 01:46:56,983 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 01:46:56,994 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 01:46:56,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 01:46:56,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 01:46:56,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 01:46:56,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 01:46:56,995 INFO L87 Difference]: Start difference. First operand 394 states and 1266 transitions. Second operand 4 states. [2020-09-18 01:46:57,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 01:46:57,026 INFO L93 Difference]: Finished difference Result 430 states and 1332 transitions. [2020-09-18 01:46:57,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-18 01:46:57,026 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-18 01:46:57,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 01:46:57,029 INFO L225 Difference]: With dead ends: 430 [2020-09-18 01:46:57,029 INFO L226 Difference]: Without dead ends: 358 [2020-09-18 01:46:57,030 INFO L675 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 [2020-09-18 01:46:57,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-09-18 01:46:57,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2020-09-18 01:46:57,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-09-18 01:46:57,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 1128 transitions. [2020-09-18 01:46:57,044 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 1128 transitions. Word has length 13 [2020-09-18 01:46:57,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 01:46:57,044 INFO L479 AbstractCegarLoop]: Abstraction has 358 states and 1128 transitions. [2020-09-18 01:46:57,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 01:46:57,044 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 1128 transitions. [2020-09-18 01:46:57,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-18 01:46:57,046 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 01:46:57,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 01:46:57,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-18 01:46:57,046 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 01:46:57,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 01:46:57,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1081404616, now seen corresponding path program 1 times [2020-09-18 01:46:57,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 01:46:57,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439037112] [2020-09-18 01:46:57,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 01:46:57,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 01:46:57,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 01:46:57,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439037112] [2020-09-18 01:46:57,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 01:46:57,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 01:46:57,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [926225796] [2020-09-18 01:46:57,123 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 01:46:57,125 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 01:46:57,128 INFO L274 McrAutomatonBuilder]: Finished intersection with 24 states and 34 transitions. [2020-09-18 01:46:57,128 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 01:46:57,201 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 01:46:57,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-18 01:46:57,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 01:46:57,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-18 01:46:57,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-18 01:46:57,203 INFO L87 Difference]: Start difference. First operand 358 states and 1128 transitions. Second operand 5 states. [2020-09-18 01:46:57,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 01:46:57,264 INFO L93 Difference]: Finished difference Result 496 states and 1517 transitions. [2020-09-18 01:46:57,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-18 01:46:57,265 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-18 01:46:57,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 01:46:57,268 INFO L225 Difference]: With dead ends: 496 [2020-09-18 01:46:57,268 INFO L226 Difference]: Without dead ends: 262 [2020-09-18 01:46:57,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-18 01:46:57,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-09-18 01:46:57,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2020-09-18 01:46:57,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-09-18 01:46:57,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 771 transitions. [2020-09-18 01:46:57,280 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 771 transitions. Word has length 14 [2020-09-18 01:46:57,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 01:46:57,281 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 771 transitions. [2020-09-18 01:46:57,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-18 01:46:57,281 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 771 transitions. [2020-09-18 01:46:57,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-18 01:46:57,282 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 01:46:57,282 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 01:46:57,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-18 01:46:57,282 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 01:46:57,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 01:46:57,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1257194017, now seen corresponding path program 1 times [2020-09-18 01:46:57,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 01:46:57,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77994004] [2020-09-18 01:46:57,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 01:46:57,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 01:46:57,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 01:46:57,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77994004] [2020-09-18 01:46:57,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 01:46:57,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 01:46:57,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1584840531] [2020-09-18 01:46:57,362 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 01:46:57,365 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 01:46:57,372 INFO L274 McrAutomatonBuilder]: Finished intersection with 34 states and 55 transitions. [2020-09-18 01:46:57,372 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 01:46:57,404 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 01:46:57,447 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 01:46:57,460 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 01:46:57,483 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 01:46:57,501 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 01:46:57,522 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 01:46:57,534 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 01:46:57,550 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 01:46:57,557 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [9912#(not (= 4 ~__unbuffered_cnt~0))] [2020-09-18 01:46:57,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-18 01:46:57,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 01:46:57,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-18 01:46:57,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-18 01:46:57,558 INFO L87 Difference]: Start difference. First operand 262 states and 771 transitions. Second operand 5 states. [2020-09-18 01:46:57,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 01:46:57,633 INFO L93 Difference]: Finished difference Result 263 states and 689 transitions. [2020-09-18 01:46:57,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-18 01:46:57,634 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-18 01:46:57,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 01:46:57,636 INFO L225 Difference]: With dead ends: 263 [2020-09-18 01:46:57,636 INFO L226 Difference]: Without dead ends: 182 [2020-09-18 01:46:57,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-18 01:46:57,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-09-18 01:46:57,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-09-18 01:46:57,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-09-18 01:46:57,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 443 transitions. [2020-09-18 01:46:57,642 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 443 transitions. Word has length 15 [2020-09-18 01:46:57,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 01:46:57,643 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 443 transitions. [2020-09-18 01:46:57,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-18 01:46:57,643 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 443 transitions. [2020-09-18 01:46:57,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-18 01:46:57,644 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 01:46:57,644 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 01:46:57,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-18 01:46:57,644 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 01:46:57,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 01:46:57,645 INFO L82 PathProgramCache]: Analyzing trace with hash -981483084, now seen corresponding path program 1 times [2020-09-18 01:46:57,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 01:46:57,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396534776] [2020-09-18 01:46:57,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 01:46:57,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 01:46:57,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 01:46:57,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396534776] [2020-09-18 01:46:57,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 01:46:57,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-18 01:46:57,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1625959376] [2020-09-18 01:46:57,728 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 01:46:57,730 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 01:46:57,761 INFO L274 McrAutomatonBuilder]: Finished intersection with 45 states and 77 transitions. [2020-09-18 01:46:57,761 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 01:46:57,795 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 01:46:57,813 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 01:46:57,835 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 01:46:57,912 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [10550#(<= ~__unbuffered_cnt~0 0)] [2020-09-18 01:46:57,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-18 01:46:57,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 01:46:57,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-18 01:46:57,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-18 01:46:57,913 INFO L87 Difference]: Start difference. First operand 182 states and 443 transitions. Second operand 7 states. [2020-09-18 01:46:57,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 01:46:57,978 INFO L93 Difference]: Finished difference Result 165 states and 373 transitions. [2020-09-18 01:46:57,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-18 01:46:57,979 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-09-18 01:46:57,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 01:46:57,980 INFO L225 Difference]: With dead ends: 165 [2020-09-18 01:46:57,980 INFO L226 Difference]: Without dead ends: 132 [2020-09-18 01:46:57,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 6 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-18 01:46:57,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-09-18 01:46:57,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2020-09-18 01:46:57,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-09-18 01:46:57,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 295 transitions. [2020-09-18 01:46:57,986 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 295 transitions. Word has length 17 [2020-09-18 01:46:57,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 01:46:57,986 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 295 transitions. [2020-09-18 01:46:57,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-18 01:46:57,986 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 295 transitions. [2020-09-18 01:46:57,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-18 01:46:57,987 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 01:46:57,987 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 01:46:57,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-18 01:46:57,988 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 01:46:57,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 01:46:57,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1311703103, now seen corresponding path program 1 times [2020-09-18 01:46:57,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 01:46:57,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381790987] [2020-09-18 01:46:57,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 01:46:58,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 01:46:58,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 01:46:58,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381790987] [2020-09-18 01:46:58,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 01:46:58,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-18 01:46:58,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [298104916] [2020-09-18 01:46:58,078 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 01:46:58,081 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 01:46:58,088 INFO L274 McrAutomatonBuilder]: Finished intersection with 46 states and 75 transitions. [2020-09-18 01:46:58,088 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 01:46:58,101 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 01:46:58,188 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [10989#(<= ~__unbuffered_cnt~0 0)] [2020-09-18 01:46:58,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-18 01:46:58,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 01:46:58,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-18 01:46:58,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-18 01:46:58,190 INFO L87 Difference]: Start difference. First operand 132 states and 295 transitions. Second operand 8 states. [2020-09-18 01:46:58,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 01:46:58,262 INFO L93 Difference]: Finished difference Result 121 states and 271 transitions. [2020-09-18 01:46:58,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-18 01:46:58,263 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-09-18 01:46:58,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 01:46:58,264 INFO L225 Difference]: With dead ends: 121 [2020-09-18 01:46:58,264 INFO L226 Difference]: Without dead ends: 112 [2020-09-18 01:46:58,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-18 01:46:58,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-18 01:46:58,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2020-09-18 01:46:58,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-09-18 01:46:58,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 255 transitions. [2020-09-18 01:46:58,268 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 255 transitions. Word has length 19 [2020-09-18 01:46:58,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 01:46:58,269 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 255 transitions. [2020-09-18 01:46:58,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-18 01:46:58,269 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 255 transitions. [2020-09-18 01:46:58,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-18 01:46:58,270 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 01:46:58,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 01:46:58,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-18 01:46:58,270 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 01:46:58,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 01:46:58,271 INFO L82 PathProgramCache]: Analyzing trace with hash 188961609, now seen corresponding path program 1 times [2020-09-18 01:46:58,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 01:46:58,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789479164] [2020-09-18 01:46:58,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 01:46:58,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 01:46:58,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 01:46:58,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789479164] [2020-09-18 01:46:58,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 01:46:58,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-18 01:46:58,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [163762495] [2020-09-18 01:46:58,346 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 01:46:58,348 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 01:46:58,358 INFO L274 McrAutomatonBuilder]: Finished intersection with 48 states and 77 transitions. [2020-09-18 01:46:58,358 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 01:46:58,431 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 01:46:58,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-18 01:46:58,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 01:46:58,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-18 01:46:58,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-18 01:46:58,432 INFO L87 Difference]: Start difference. First operand 112 states and 255 transitions. Second operand 5 states. [2020-09-18 01:46:58,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 01:46:58,465 INFO L93 Difference]: Finished difference Result 146 states and 329 transitions. [2020-09-18 01:46:58,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-18 01:46:58,465 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-18 01:46:58,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 01:46:58,466 INFO L225 Difference]: With dead ends: 146 [2020-09-18 01:46:58,466 INFO L226 Difference]: Without dead ends: 52 [2020-09-18 01:46:58,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-18 01:46:58,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-18 01:46:58,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-09-18 01:46:58,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-18 01:46:58,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 98 transitions. [2020-09-18 01:46:58,469 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 98 transitions. Word has length 21 [2020-09-18 01:46:58,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 01:46:58,470 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 98 transitions. [2020-09-18 01:46:58,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-18 01:46:58,470 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 98 transitions. [2020-09-18 01:46:58,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-18 01:46:58,471 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 01:46:58,471 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 01:46:58,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-18 01:46:58,471 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 01:46:58,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 01:46:58,472 INFO L82 PathProgramCache]: Analyzing trace with hash -62971415, now seen corresponding path program 2 times [2020-09-18 01:46:58,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 01:46:58,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575524233] [2020-09-18 01:46:58,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 01:46:58,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 01:46:58,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 01:46:58,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575524233] [2020-09-18 01:46:58,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 01:46:58,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-18 01:46:58,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1218641825] [2020-09-18 01:46:58,545 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 01:46:58,548 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 01:46:58,555 INFO L274 McrAutomatonBuilder]: Finished intersection with 27 states and 31 transitions. [2020-09-18 01:46:58,555 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 01:46:58,566 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 01:46:58,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-18 01:46:58,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 01:46:58,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-18 01:46:58,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-18 01:46:58,567 INFO L87 Difference]: Start difference. First operand 52 states and 98 transitions. Second operand 5 states. [2020-09-18 01:46:58,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 01:46:58,599 INFO L93 Difference]: Finished difference Result 51 states and 97 transitions. [2020-09-18 01:46:58,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-18 01:46:58,600 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-18 01:46:58,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 01:46:58,602 INFO L225 Difference]: With dead ends: 51 [2020-09-18 01:46:58,602 INFO L226 Difference]: Without dead ends: 0 [2020-09-18 01:46:58,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-18 01:46:58,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-18 01:46:58,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-18 01:46:58,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-18 01:46:58,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-18 01:46:58,604 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-09-18 01:46:58,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 01:46:58,604 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-18 01:46:58,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-18 01:46:58,604 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-18 01:46:58,604 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-18 01:46:58,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-18 01:46:58,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 01:46:58 BasicIcfg [2020-09-18 01:46:58,628 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-18 01:46:58,631 INFO L168 Benchmark]: Toolchain (without parser) took 6231.71 ms. Allocated memory was 140.5 MB in the beginning and 285.7 MB in the end (delta: 145.2 MB). Free memory was 102.7 MB in the beginning and 253.1 MB in the end (delta: -150.4 MB). Peak memory consumption was 154.7 MB. Max. memory is 7.1 GB. [2020-09-18 01:46:58,632 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-18 01:46:58,633 INFO L168 Benchmark]: CACSL2BoogieTranslator took 787.79 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.0 MB in the beginning and 161.6 MB in the end (delta: -59.6 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2020-09-18 01:46:58,634 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.20 ms. Allocated memory is still 203.9 MB. Free memory was 161.6 MB in the beginning and 159.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-09-18 01:46:58,635 INFO L168 Benchmark]: Boogie Preprocessor took 31.50 ms. Allocated memory is still 203.9 MB. Free memory was 159.5 MB in the beginning and 157.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-18 01:46:58,636 INFO L168 Benchmark]: RCFGBuilder took 567.31 ms. Allocated memory is still 203.9 MB. Free memory was 157.5 MB in the beginning and 133.2 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-09-18 01:46:58,637 INFO L168 Benchmark]: TraceAbstraction took 4769.43 ms. Allocated memory was 203.9 MB in the beginning and 285.7 MB in the end (delta: 81.8 MB). Free memory was 133.2 MB in the beginning and 253.1 MB in the end (delta: -120.0 MB). Peak memory consumption was 121.7 MB. Max. memory is 7.1 GB. [2020-09-18 01:46:58,641 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 787.79 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.0 MB in the beginning and 161.6 MB in the end (delta: -59.6 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 67.20 ms. Allocated memory is still 203.9 MB. Free memory was 161.6 MB in the beginning and 159.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.50 ms. Allocated memory is still 203.9 MB. Free memory was 159.5 MB in the beginning and 157.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 567.31 ms. Allocated memory is still 203.9 MB. Free memory was 157.5 MB in the beginning and 133.2 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4769.43 ms. Allocated memory was 203.9 MB in the beginning and 285.7 MB in the end (delta: 81.8 MB). Free memory was 133.2 MB in the beginning and 253.1 MB in the end (delta: -120.0 MB). Peak memory consumption was 121.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 93 ProgramPointsBefore, 39 ProgramPointsAfterwards, 82 TransitionsBefore, 27 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 933 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2807 CheckedPairsTotal, 63 TotalNumberOfCompositions - 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, 81 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.5s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 245 SDtfs, 258 SDslu, 466 SDs, 0 SdLazy, 201 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 170 GetRequests, 112 SyntacticMatches, 12 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 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, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 153 NumberOfCodeBlocks, 153 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 143 ConstructedInterpolants, 0 QuantifiedInterpolants, 6535 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...