/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 12:57:09,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 12:57:09,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 12:57:09,512 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 12:57:09,513 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 12:57:09,514 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 12:57:09,515 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 12:57:09,517 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 12:57:09,519 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 12:57:09,519 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 12:57:09,520 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 12:57:09,521 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 12:57:09,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 12:57:09,523 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 12:57:09,524 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 12:57:09,525 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 12:57:09,526 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 12:57:09,527 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 12:57:09,531 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 12:57:09,535 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 12:57:09,537 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 12:57:09,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 12:57:09,542 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 12:57:09,542 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 12:57:09,545 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-09 12:57:09,550 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 12:57:09,550 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 12:57:09,551 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 12:57:09,552 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 12:57:09,553 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 12:57:09,553 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 12:57:09,554 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 12:57:09,555 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 12:57:09,555 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 12:57:09,556 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 12:57:09,557 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 12:57:09,558 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-09 12:57:09,599 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 12:57:09,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 12:57:09,601 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 12:57:09,602 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 12:57:09,602 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 12:57:09,602 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 12:57:09,602 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 12:57:09,602 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 12:57:09,603 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 12:57:09,603 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 12:57:09,604 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 12:57:09,604 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 12:57:09,604 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 12:57:09,605 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 12:57:09,605 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 12:57:09,605 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 12:57:09,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 12:57:09,606 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 12:57:09,606 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 12:57:09,606 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 12:57:09,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 12:57:09,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 12:57:09,607 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 12:57:09,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 12:57:09,607 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 12:57:09,607 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-09 12:57:09,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 12:57:09,608 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-09 12:57:09,608 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-09 12:57:09,608 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 12:57:09,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 12:57:09,896 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 12:57:09,899 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 12:57:09,900 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 12:57:09,901 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 12:57:09,902 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i [2020-10-09 12:57:09,969 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0dce52f0/a22d1257d51f4e7da352e83ca9fb31f9/FLAGa72213582 [2020-10-09 12:57:10,471 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 12:57:10,472 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i [2020-10-09 12:57:10,488 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0dce52f0/a22d1257d51f4e7da352e83ca9fb31f9/FLAGa72213582 [2020-10-09 12:57:10,783 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0dce52f0/a22d1257d51f4e7da352e83ca9fb31f9 [2020-10-09 12:57:10,791 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 12:57:10,792 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 12:57:10,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 12:57:10,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 12:57:10,796 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 12:57:10,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 12:57:10" (1/1) ... [2020-10-09 12:57:10,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7581190f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:57:10, skipping insertion in model container [2020-10-09 12:57:10,799 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 12:57:10" (1/1) ... [2020-10-09 12:57:10,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 12:57:10,849 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 12:57:11,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 12:57:11,195 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 12:57:11,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 12:57:11,485 INFO L208 MainTranslator]: Completed translation [2020-10-09 12:57:11,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:57:11 WrapperNode [2020-10-09 12:57:11,487 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 12:57:11,489 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 12:57:11,489 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 12:57:11,489 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 12:57:11,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:57:11" (1/1) ... [2020-10-09 12:57:11,514 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:57:11" (1/1) ... [2020-10-09 12:57:11,535 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 12:57:11,535 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 12:57:11,536 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 12:57:11,536 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 12:57:11,543 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:57:11" (1/1) ... [2020-10-09 12:57:11,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:57:11" (1/1) ... [2020-10-09 12:57:11,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:57:11" (1/1) ... [2020-10-09 12:57:11,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:57:11" (1/1) ... [2020-10-09 12:57:11,553 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:57:11" (1/1) ... [2020-10-09 12:57:11,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:57:11" (1/1) ... [2020-10-09 12:57:11,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:57:11" (1/1) ... [2020-10-09 12:57:11,560 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 12:57:11,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 12:57:11,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 12:57:11,561 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 12:57:11,561 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:57:11" (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 [2020-10-09 12:57:11,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 12:57:11,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-09 12:57:11,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 12:57:11,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 12:57:11,628 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-09 12:57:11,628 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-09 12:57:11,628 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-09 12:57:11,628 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-09 12:57:11,628 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-09 12:57:11,629 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-09 12:57:11,629 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-09 12:57:11,629 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-09 12:57:11,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-09 12:57:11,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 12:57:11,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 12:57:11,632 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-09 12:57:12,005 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 12:57:12,005 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-09 12:57:12,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 12:57:12 BoogieIcfgContainer [2020-10-09 12:57:12,008 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 12:57:12,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 12:57:12,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 12:57:12,012 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 12:57:12,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 12:57:10" (1/3) ... [2020-10-09 12:57:12,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@452238ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 12:57:12, skipping insertion in model container [2020-10-09 12:57:12,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:57:11" (2/3) ... [2020-10-09 12:57:12,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@452238ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 12:57:12, skipping insertion in model container [2020-10-09 12:57:12,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 12:57:12" (3/3) ... [2020-10-09 12:57:12,016 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_tso.opt.i [2020-10-09 12:57:12,027 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-09 12:57:12,027 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 12:57:12,035 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-09 12:57:12,036 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 12:57:12,063 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:57:12,064 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:57:12,064 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:57:12,067 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:57:12,067 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:57:12,068 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:57:12,068 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:57:12,068 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:57:12,068 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:57:12,069 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:57:12,069 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:57:12,069 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:57:12,070 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:57:12,070 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:57:12,070 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:57:12,070 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:57:12,071 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:57:12,071 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:57:12,071 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:57:12,071 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:57:12,072 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:57:12,072 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:57:12,072 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:57:12,072 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:57:12,076 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:57:12,076 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:57:12,076 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:57:12,077 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:57:12,083 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:57:12,083 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:57:12,083 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:57:12,083 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:57:12,085 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:57:12,086 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:57:12,086 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:57:12,086 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:57:12,088 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:57:12,089 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:57:12,089 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:57:12,089 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:57:12,104 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-09 12:57:12,124 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 12:57:12,124 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-09 12:57:12,124 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 12:57:12,124 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 12:57:12,125 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 12:57:12,125 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 12:57:12,125 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 12:57:12,125 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 12:57:12,138 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-09 12:57:12,141 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 80 transitions, 180 flow [2020-10-09 12:57:12,144 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 80 transitions, 180 flow [2020-10-09 12:57:12,146 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-10-09 12:57:12,190 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-10-09 12:57:12,191 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 12:57:12,196 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-10-09 12:57:12,199 INFO L117 LiptonReduction]: Number of co-enabled transitions 1822 [2020-10-09 12:57:13,645 INFO L132 LiptonReduction]: Checked pairs total: 3057 [2020-10-09 12:57:13,645 INFO L134 LiptonReduction]: Total number of compositions: 63 [2020-10-09 12:57:13,652 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-10-09 12:57:13,713 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-10-09 12:57:13,716 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-10-09 12:57:13,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-09 12:57:13,726 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:57:13,727 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:57:13,727 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:57:13,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:57:13,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1118879254, now seen corresponding path program 1 times [2020-10-09 12:57:13,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:57:13,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667308329] [2020-10-09 12:57:13,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:57:13,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:57:13,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 12:57:13,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667308329] [2020-10-09 12:57:13,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:57:13,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 12:57:13,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87474376] [2020-10-09 12:57:13,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-09 12:57:13,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:57:13,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-09 12:57:13,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-09 12:57:13,944 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-10-09 12:57:13,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:57:13,988 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-10-09 12:57:13,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-09 12:57:13,990 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-09 12:57:13,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:57:14,021 INFO L225 Difference]: With dead ends: 850 [2020-10-09 12:57:14,021 INFO L226 Difference]: Without dead ends: 706 [2020-10-09 12:57:14,022 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-09 12:57:14,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-10-09 12:57:14,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-10-09 12:57:14,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-10-09 12:57:14,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-10-09 12:57:14,161 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-10-09 12:57:14,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:57:14,165 INFO L481 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-10-09 12:57:14,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-09 12:57:14,165 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-10-09 12:57:14,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 12:57:14,170 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:57:14,171 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:57:14,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-09 12:57:14,171 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:57:14,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:57:14,172 INFO L82 PathProgramCache]: Analyzing trace with hash -325524913, now seen corresponding path program 1 times [2020-10-09 12:57:14,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:57:14,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244482370] [2020-10-09 12:57:14,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:57:14,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:57:14,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 12:57:14,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244482370] [2020-10-09 12:57:14,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:57:14,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 12:57:14,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057429368] [2020-10-09 12:57:14,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 12:57:14,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:57:14,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 12:57:14,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-09 12:57:14,303 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-10-09 12:57:14,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:57:14,346 INFO L93 Difference]: Finished difference Result 802 states and 2662 transitions. [2020-10-09 12:57:14,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-09 12:57:14,347 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-09 12:57:14,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:57:14,353 INFO L225 Difference]: With dead ends: 802 [2020-10-09 12:57:14,353 INFO L226 Difference]: Without dead ends: 658 [2020-10-09 12:57:14,354 INFO L673 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 [2020-10-09 12:57:14,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-10-09 12:57:14,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2020-10-09 12:57:14,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2020-10-09 12:57:14,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 2230 transitions. [2020-10-09 12:57:14,382 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 2230 transitions. Word has length 11 [2020-10-09 12:57:14,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:57:14,382 INFO L481 AbstractCegarLoop]: Abstraction has 658 states and 2230 transitions. [2020-10-09 12:57:14,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 12:57:14,382 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 2230 transitions. [2020-10-09 12:57:14,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 12:57:14,385 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:57:14,385 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:57:14,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-09 12:57:14,385 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:57:14,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:57:14,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1501347001, now seen corresponding path program 1 times [2020-10-09 12:57:14,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:57:14,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471489460] [2020-10-09 12:57:14,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:57:14,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:57:14,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 12:57:14,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471489460] [2020-10-09 12:57:14,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:57:14,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 12:57:14,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722024448] [2020-10-09 12:57:14,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 12:57:14,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:57:14,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 12:57:14,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-09 12:57:14,454 INFO L87 Difference]: Start difference. First operand 658 states and 2230 transitions. Second operand 4 states. [2020-10-09 12:57:14,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:57:14,482 INFO L93 Difference]: Finished difference Result 718 states and 2348 transitions. [2020-10-09 12:57:14,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-09 12:57:14,482 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-09 12:57:14,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:57:14,487 INFO L225 Difference]: With dead ends: 718 [2020-10-09 12:57:14,487 INFO L226 Difference]: Without dead ends: 598 [2020-10-09 12:57:14,488 INFO L673 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 [2020-10-09 12:57:14,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2020-10-09 12:57:14,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2020-10-09 12:57:14,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2020-10-09 12:57:14,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 1992 transitions. [2020-10-09 12:57:14,509 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 1992 transitions. Word has length 12 [2020-10-09 12:57:14,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:57:14,510 INFO L481 AbstractCegarLoop]: Abstraction has 598 states and 1992 transitions. [2020-10-09 12:57:14,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 12:57:14,510 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 1992 transitions. [2020-10-09 12:57:14,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 12:57:14,512 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:57:14,512 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:57:14,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-09 12:57:14,512 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:57:14,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:57:14,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1422147839, now seen corresponding path program 1 times [2020-10-09 12:57:14,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:57:14,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138384338] [2020-10-09 12:57:14,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:57:14,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:57:14,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 12:57:14,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138384338] [2020-10-09 12:57:14,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:57:14,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 12:57:14,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421381225] [2020-10-09 12:57:14,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 12:57:14,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:57:14,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 12:57:14,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-09 12:57:14,572 INFO L87 Difference]: Start difference. First operand 598 states and 1992 transitions. Second operand 4 states. [2020-10-09 12:57:14,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:57:14,605 INFO L93 Difference]: Finished difference Result 668 states and 2153 transitions. [2020-10-09 12:57:14,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-09 12:57:14,606 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-09 12:57:14,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:57:14,611 INFO L225 Difference]: With dead ends: 668 [2020-10-09 12:57:14,611 INFO L226 Difference]: Without dead ends: 578 [2020-10-09 12:57:14,611 INFO L673 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 [2020-10-09 12:57:14,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-10-09 12:57:14,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2020-10-09 12:57:14,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-10-09 12:57:14,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 1906 transitions. [2020-10-09 12:57:14,631 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 1906 transitions. Word has length 13 [2020-10-09 12:57:14,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:57:14,632 INFO L481 AbstractCegarLoop]: Abstraction has 578 states and 1906 transitions. [2020-10-09 12:57:14,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 12:57:14,632 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 1906 transitions. [2020-10-09 12:57:14,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 12:57:14,634 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:57:14,634 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:57:14,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-09 12:57:14,634 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:57:14,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:57:14,634 INFO L82 PathProgramCache]: Analyzing trace with hash 796896076, now seen corresponding path program 1 times [2020-10-09 12:57:14,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:57:14,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263030720] [2020-10-09 12:57:14,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:57:14,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:57:14,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 12:57:14,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263030720] [2020-10-09 12:57:14,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:57:14,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 12:57:14,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458124189] [2020-10-09 12:57:14,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 12:57:14,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:57:14,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 12:57:14,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-09 12:57:14,685 INFO L87 Difference]: Start difference. First operand 578 states and 1906 transitions. Second operand 4 states. [2020-10-09 12:57:14,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:57:14,722 INFO L93 Difference]: Finished difference Result 814 states and 2558 transitions. [2020-10-09 12:57:14,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-09 12:57:14,722 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-09 12:57:14,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:57:14,727 INFO L225 Difference]: With dead ends: 814 [2020-10-09 12:57:14,727 INFO L226 Difference]: Without dead ends: 618 [2020-10-09 12:57:14,727 INFO L673 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 [2020-10-09 12:57:14,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-10-09 12:57:14,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 538. [2020-10-09 12:57:14,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-10-09 12:57:14,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 1706 transitions. [2020-10-09 12:57:14,746 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 1706 transitions. Word has length 14 [2020-10-09 12:57:14,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:57:14,746 INFO L481 AbstractCegarLoop]: Abstraction has 538 states and 1706 transitions. [2020-10-09 12:57:14,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 12:57:14,747 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 1706 transitions. [2020-10-09 12:57:14,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 12:57:14,748 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:57:14,748 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:57:14,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-09 12:57:14,749 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:57:14,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:57:14,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1106275611, now seen corresponding path program 1 times [2020-10-09 12:57:14,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:57:14,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003226524] [2020-10-09 12:57:14,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:57:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:57:14,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 12:57:14,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003226524] [2020-10-09 12:57:14,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:57:14,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 12:57:14,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929113394] [2020-10-09 12:57:14,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 12:57:14,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:57:14,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 12:57:14,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-09 12:57:14,796 INFO L87 Difference]: Start difference. First operand 538 states and 1706 transitions. Second operand 4 states. [2020-10-09 12:57:14,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:57:14,819 INFO L93 Difference]: Finished difference Result 562 states and 1746 transitions. [2020-10-09 12:57:14,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-09 12:57:14,819 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-09 12:57:14,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:57:14,823 INFO L225 Difference]: With dead ends: 562 [2020-10-09 12:57:14,823 INFO L226 Difference]: Without dead ends: 514 [2020-10-09 12:57:14,824 INFO L673 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 [2020-10-09 12:57:14,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-10-09 12:57:14,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 514. [2020-10-09 12:57:14,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514 states. [2020-10-09 12:57:14,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1618 transitions. [2020-10-09 12:57:14,840 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 1618 transitions. Word has length 14 [2020-10-09 12:57:14,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:57:14,840 INFO L481 AbstractCegarLoop]: Abstraction has 514 states and 1618 transitions. [2020-10-09 12:57:14,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 12:57:14,840 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 1618 transitions. [2020-10-09 12:57:14,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 12:57:14,842 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:57:14,842 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:57:14,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-09 12:57:14,842 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:57:14,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:57:14,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1523462552, now seen corresponding path program 1 times [2020-10-09 12:57:14,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:57:14,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549428660] [2020-10-09 12:57:14,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:57:14,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:57:14,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 12:57:14,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549428660] [2020-10-09 12:57:14,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:57:14,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 12:57:14,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952289387] [2020-10-09 12:57:14,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 12:57:14,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:57:14,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 12:57:14,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-09 12:57:14,914 INFO L87 Difference]: Start difference. First operand 514 states and 1618 transitions. Second operand 5 states. [2020-10-09 12:57:14,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:57:14,953 INFO L93 Difference]: Finished difference Result 778 states and 2412 transitions. [2020-10-09 12:57:14,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-09 12:57:14,954 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-09 12:57:14,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:57:14,957 INFO L225 Difference]: With dead ends: 778 [2020-10-09 12:57:14,957 INFO L226 Difference]: Without dead ends: 418 [2020-10-09 12:57:14,957 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-09 12:57:14,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-10-09 12:57:14,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2020-10-09 12:57:14,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-10-09 12:57:14,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 1276 transitions. [2020-10-09 12:57:14,971 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 1276 transitions. Word has length 15 [2020-10-09 12:57:14,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:57:14,971 INFO L481 AbstractCegarLoop]: Abstraction has 418 states and 1276 transitions. [2020-10-09 12:57:14,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 12:57:14,971 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 1276 transitions. [2020-10-09 12:57:14,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 12:57:14,972 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:57:14,973 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:57:14,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-09 12:57:14,973 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:57:14,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:57:14,973 INFO L82 PathProgramCache]: Analyzing trace with hash -99110680, now seen corresponding path program 2 times [2020-10-09 12:57:14,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:57:14,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885024115] [2020-10-09 12:57:14,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:57:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:57:15,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 12:57:15,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885024115] [2020-10-09 12:57:15,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:57:15,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 12:57:15,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690242914] [2020-10-09 12:57:15,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 12:57:15,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:57:15,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 12:57:15,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-09 12:57:15,022 INFO L87 Difference]: Start difference. First operand 418 states and 1276 transitions. Second operand 4 states. [2020-10-09 12:57:15,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:57:15,055 INFO L93 Difference]: Finished difference Result 598 states and 1736 transitions. [2020-10-09 12:57:15,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-09 12:57:15,056 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-09 12:57:15,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:57:15,059 INFO L225 Difference]: With dead ends: 598 [2020-10-09 12:57:15,060 INFO L226 Difference]: Without dead ends: 442 [2020-10-09 12:57:15,061 INFO L673 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 [2020-10-09 12:57:15,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-10-09 12:57:15,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 394. [2020-10-09 12:57:15,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-10-09 12:57:15,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1140 transitions. [2020-10-09 12:57:15,087 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1140 transitions. Word has length 15 [2020-10-09 12:57:15,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:57:15,088 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 1140 transitions. [2020-10-09 12:57:15,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 12:57:15,088 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1140 transitions. [2020-10-09 12:57:15,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 12:57:15,090 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:57:15,090 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:57:15,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-09 12:57:15,090 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:57:15,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:57:15,091 INFO L82 PathProgramCache]: Analyzing trace with hash -96752386, now seen corresponding path program 1 times [2020-10-09 12:57:15,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:57:15,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784783695] [2020-10-09 12:57:15,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:57:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:57:15,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 12:57:15,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784783695] [2020-10-09 12:57:15,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:57:15,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 12:57:15,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828486019] [2020-10-09 12:57:15,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 12:57:15,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:57:15,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 12:57:15,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-09 12:57:15,183 INFO L87 Difference]: Start difference. First operand 394 states and 1140 transitions. Second operand 5 states. [2020-10-09 12:57:15,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:57:15,239 INFO L93 Difference]: Finished difference Result 542 states and 1518 transitions. [2020-10-09 12:57:15,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-09 12:57:15,241 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-09 12:57:15,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:57:15,243 INFO L225 Difference]: With dead ends: 542 [2020-10-09 12:57:15,243 INFO L226 Difference]: Without dead ends: 254 [2020-10-09 12:57:15,243 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-09 12:57:15,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-09 12:57:15,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2020-10-09 12:57:15,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-09 12:57:15,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 691 transitions. [2020-10-09 12:57:15,252 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 691 transitions. Word has length 15 [2020-10-09 12:57:15,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:57:15,252 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 691 transitions. [2020-10-09 12:57:15,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 12:57:15,252 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 691 transitions. [2020-10-09 12:57:15,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 12:57:15,253 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:57:15,253 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:57:15,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-09 12:57:15,254 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:57:15,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:57:15,254 INFO L82 PathProgramCache]: Analyzing trace with hash 807678122, now seen corresponding path program 2 times [2020-10-09 12:57:15,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:57:15,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654187284] [2020-10-09 12:57:15,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:57:15,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:57:15,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 12:57:15,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654187284] [2020-10-09 12:57:15,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:57:15,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 12:57:15,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824218612] [2020-10-09 12:57:15,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 12:57:15,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:57:15,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 12:57:15,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-09 12:57:15,335 INFO L87 Difference]: Start difference. First operand 254 states and 691 transitions. Second operand 4 states. [2020-10-09 12:57:15,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:57:15,366 INFO L93 Difference]: Finished difference Result 302 states and 756 transitions. [2020-10-09 12:57:15,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-09 12:57:15,367 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-09 12:57:15,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:57:15,368 INFO L225 Difference]: With dead ends: 302 [2020-10-09 12:57:15,369 INFO L226 Difference]: Without dead ends: 229 [2020-10-09 12:57:15,369 INFO L673 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 [2020-10-09 12:57:15,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-09 12:57:15,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2020-10-09 12:57:15,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-09 12:57:15,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 581 transitions. [2020-10-09 12:57:15,376 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 581 transitions. Word has length 15 [2020-10-09 12:57:15,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:57:15,376 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 581 transitions. [2020-10-09 12:57:15,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 12:57:15,376 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 581 transitions. [2020-10-09 12:57:15,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-09 12:57:15,377 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:57:15,377 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:57:15,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-09 12:57:15,378 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:57:15,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:57:15,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1481069530, now seen corresponding path program 1 times [2020-10-09 12:57:15,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:57:15,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519798674] [2020-10-09 12:57:15,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:57:15,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:57:15,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 12:57:15,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519798674] [2020-10-09 12:57:15,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:57:15,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-09 12:57:15,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491699760] [2020-10-09 12:57:15,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 12:57:15,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:57:15,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 12:57:15,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-09 12:57:15,427 INFO L87 Difference]: Start difference. First operand 229 states and 581 transitions. Second operand 5 states. [2020-10-09 12:57:15,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:57:15,469 INFO L93 Difference]: Finished difference Result 227 states and 514 transitions. [2020-10-09 12:57:15,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 12:57:15,470 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-09 12:57:15,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:57:15,471 INFO L225 Difference]: With dead ends: 227 [2020-10-09 12:57:15,471 INFO L226 Difference]: Without dead ends: 171 [2020-10-09 12:57:15,472 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-09 12:57:15,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-09 12:57:15,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-10-09 12:57:15,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-09 12:57:15,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 378 transitions. [2020-10-09 12:57:15,477 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 378 transitions. Word has length 16 [2020-10-09 12:57:15,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:57:15,477 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 378 transitions. [2020-10-09 12:57:15,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 12:57:15,477 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 378 transitions. [2020-10-09 12:57:15,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-09 12:57:15,478 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:57:15,478 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:57:15,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-09 12:57:15,478 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:57:15,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:57:15,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1331262194, now seen corresponding path program 1 times [2020-10-09 12:57:15,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:57:15,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279340773] [2020-10-09 12:57:15,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:57:15,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:57:15,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 12:57:15,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279340773] [2020-10-09 12:57:15,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:57:15,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-09 12:57:15,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180128588] [2020-10-09 12:57:15,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-09 12:57:15,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:57:15,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-09 12:57:15,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-09 12:57:15,532 INFO L87 Difference]: Start difference. First operand 171 states and 378 transitions. Second operand 6 states. [2020-10-09 12:57:15,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:57:15,583 INFO L93 Difference]: Finished difference Result 147 states and 307 transitions. [2020-10-09 12:57:15,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-09 12:57:15,584 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-09 12:57:15,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:57:15,585 INFO L225 Difference]: With dead ends: 147 [2020-10-09 12:57:15,586 INFO L226 Difference]: Without dead ends: 107 [2020-10-09 12:57:15,586 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-09 12:57:15,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-09 12:57:15,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-10-09 12:57:15,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-09 12:57:15,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 217 transitions. [2020-10-09 12:57:15,589 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 217 transitions. Word has length 17 [2020-10-09 12:57:15,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:57:15,590 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 217 transitions. [2020-10-09 12:57:15,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-09 12:57:15,590 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 217 transitions. [2020-10-09 12:57:15,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-09 12:57:15,590 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:57:15,591 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:57:15,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-09 12:57:15,591 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:57:15,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:57:15,591 INFO L82 PathProgramCache]: Analyzing trace with hash 461519417, now seen corresponding path program 1 times [2020-10-09 12:57:15,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:57:15,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540283031] [2020-10-09 12:57:15,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:57:15,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:57:15,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 12:57:15,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540283031] [2020-10-09 12:57:15,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:57:15,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-09 12:57:15,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31220494] [2020-10-09 12:57:15,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 12:57:15,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:57:15,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 12:57:15,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-09 12:57:15,628 INFO L87 Difference]: Start difference. First operand 107 states and 217 transitions. Second operand 5 states. [2020-10-09 12:57:15,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:57:15,655 INFO L93 Difference]: Finished difference Result 121 states and 234 transitions. [2020-10-09 12:57:15,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 12:57:15,656 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-09 12:57:15,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:57:15,657 INFO L225 Difference]: With dead ends: 121 [2020-10-09 12:57:15,657 INFO L226 Difference]: Without dead ends: 105 [2020-10-09 12:57:15,657 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-09 12:57:15,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-09 12:57:15,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2020-10-09 12:57:15,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-09 12:57:15,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 205 transitions. [2020-10-09 12:57:15,661 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 205 transitions. Word has length 19 [2020-10-09 12:57:15,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:57:15,661 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 205 transitions. [2020-10-09 12:57:15,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 12:57:15,661 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 205 transitions. [2020-10-09 12:57:15,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-09 12:57:15,662 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:57:15,662 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:57:15,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-09 12:57:15,662 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:57:15,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:57:15,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1319799301, now seen corresponding path program 2 times [2020-10-09 12:57:15,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:57:15,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040272196] [2020-10-09 12:57:15,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:57:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:57:15,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 12:57:15,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040272196] [2020-10-09 12:57:15,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:57:15,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-09 12:57:15,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314258011] [2020-10-09 12:57:15,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-09 12:57:15,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:57:15,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-09 12:57:15,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-09 12:57:15,722 INFO L87 Difference]: Start difference. First operand 103 states and 205 transitions. Second operand 7 states. [2020-10-09 12:57:15,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:57:15,768 INFO L93 Difference]: Finished difference Result 93 states and 190 transitions. [2020-10-09 12:57:15,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-09 12:57:15,768 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-09 12:57:15,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:57:15,769 INFO L225 Difference]: With dead ends: 93 [2020-10-09 12:57:15,769 INFO L226 Difference]: Without dead ends: 0 [2020-10-09 12:57:15,769 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-09 12:57:15,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-09 12:57:15,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-09 12:57:15,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-09 12:57:15,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-09 12:57:15,770 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-10-09 12:57:15,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:57:15,770 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-09 12:57:15,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-09 12:57:15,771 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-09 12:57:15,771 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-09 12:57:15,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-09 12:57:15,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 12:57:15 BasicIcfg [2020-10-09 12:57:15,775 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 12:57:15,777 INFO L168 Benchmark]: Toolchain (without parser) took 4984.25 ms. Allocated memory was 252.7 MB in the beginning and 419.4 MB in the end (delta: 166.7 MB). Free memory was 205.1 MB in the beginning and 282.7 MB in the end (delta: -77.6 MB). Peak memory consumption was 89.1 MB. Max. memory is 14.2 GB. [2020-10-09 12:57:15,778 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 252.7 MB. Free memory is still 226.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 12:57:15,778 INFO L168 Benchmark]: CACSL2BoogieTranslator took 694.59 ms. Allocated memory was 252.7 MB in the beginning and 320.9 MB in the end (delta: 68.2 MB). Free memory was 205.1 MB in the beginning and 275.8 MB in the end (delta: -70.7 MB). Peak memory consumption was 30.9 MB. Max. memory is 14.2 GB. [2020-10-09 12:57:15,779 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.35 ms. Allocated memory is still 320.9 MB. Free memory was 275.8 MB in the beginning and 273.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 12:57:15,780 INFO L168 Benchmark]: Boogie Preprocessor took 24.45 ms. Allocated memory is still 320.9 MB. Free memory was 273.3 MB in the beginning and 270.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 12:57:15,780 INFO L168 Benchmark]: RCFGBuilder took 447.46 ms. Allocated memory is still 320.9 MB. Free memory was 270.8 MB in the beginning and 246.4 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. [2020-10-09 12:57:15,781 INFO L168 Benchmark]: TraceAbstraction took 3765.75 ms. Allocated memory was 320.9 MB in the beginning and 419.4 MB in the end (delta: 98.6 MB). Free memory was 246.4 MB in the beginning and 282.7 MB in the end (delta: -36.3 MB). Peak memory consumption was 62.2 MB. Max. memory is 14.2 GB. [2020-10-09 12:57:15,785 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 252.7 MB. Free memory is still 226.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 694.59 ms. Allocated memory was 252.7 MB in the beginning and 320.9 MB in the end (delta: 68.2 MB). Free memory was 205.1 MB in the beginning and 275.8 MB in the end (delta: -70.7 MB). Peak memory consumption was 30.9 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 46.35 ms. Allocated memory is still 320.9 MB. Free memory was 275.8 MB in the beginning and 273.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 24.45 ms. Allocated memory is still 320.9 MB. Free memory was 273.3 MB in the beginning and 270.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 447.46 ms. Allocated memory is still 320.9 MB. Free memory was 270.8 MB in the beginning and 246.4 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3765.75 ms. Allocated memory was 320.9 MB in the beginning and 419.4 MB in the end (delta: 98.6 MB). Free memory was 246.4 MB in the beginning and 282.7 MB in the end (delta: -36.3 MB). Peak memory consumption was 62.2 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1223 VarBasedMoverChecksPositive, 53 VarBasedMoverChecksNegative, 18 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 103 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.5s, 91 PlacesBefore, 39 PlacesAfterwards, 80 TransitionsBefore, 27 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 63 TotalNumberOfCompositions, 3057 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 14, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 369 SDtfs, 330 SDslu, 594 SDs, 0 SdLazy, 226 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=850occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 130 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 205 NumberOfCodeBlocks, 205 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 191 ConstructedInterpolants, 0 QuantifiedInterpolants, 8005 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...