/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-21 22:02:38,391 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-21 22:02:38,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-21 22:02:38,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-21 22:02:38,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-21 22:02:38,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-21 22:02:38,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-21 22:02:38,424 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-21 22:02:38,426 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-21 22:02:38,426 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-21 22:02:38,427 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-21 22:02:38,428 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-21 22:02:38,429 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-21 22:02:38,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-21 22:02:38,436 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-21 22:02:38,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-21 22:02:38,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-21 22:02:38,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-21 22:02:38,444 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-21 22:02:38,447 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-21 22:02:38,450 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-21 22:02:38,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-21 22:02:38,455 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-21 22:02:38,455 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-21 22:02:38,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-21 22:02:38,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-21 22:02:38,464 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-21 22:02:38,465 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-21 22:02:38,466 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-21 22:02:38,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-21 22:02:38,468 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-21 22:02:38,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-21 22:02:38,469 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-21 22:02:38,470 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-21 22:02:38,472 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-21 22:02:38,472 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-21 22:02:38,473 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-21 22:02:38,473 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-21 22:02:38,473 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-21 22:02:38,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-21 22:02:38,477 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-21 22:02:38,477 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 [2020-10-21 22:02:38,531 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-21 22:02:38,534 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-21 22:02:38,536 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-21 22:02:38,536 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-21 22:02:38,536 INFO L138 SettingsManager]: * Use SBE=true [2020-10-21 22:02:38,536 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-21 22:02:38,536 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-21 22:02:38,537 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-21 22:02:38,537 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-21 22:02:38,539 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-21 22:02:38,539 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-21 22:02:38,539 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-21 22:02:38,540 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-21 22:02:38,540 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-21 22:02:38,540 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-21 22:02:38,540 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-21 22:02:38,540 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-21 22:02:38,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-21 22:02:38,541 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-21 22:02:38,541 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-21 22:02:38,541 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-21 22:02:38,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 22:02:38,541 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-21 22:02:38,542 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-21 22:02:38,542 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-21 22:02:38,545 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-21 22:02:38,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-21 22:02:38,546 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-21 22:02:38,546 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-21 22:02:38,546 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-21 22:02:38,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-21 22:02:38,859 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-21 22:02:38,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-21 22:02:38,867 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-21 22:02:38,868 INFO L275 PluginConnector]: CDTParser initialized [2020-10-21 22:02:38,868 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.oepc.i [2020-10-21 22:02:38,940 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d609ed42/5da70cc9a08444ae9ec30e233c144a60/FLAGb09d88ab7 [2020-10-21 22:02:39,462 INFO L306 CDTParser]: Found 1 translation units. [2020-10-21 22:02:39,463 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_tso.oepc.i [2020-10-21 22:02:39,479 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d609ed42/5da70cc9a08444ae9ec30e233c144a60/FLAGb09d88ab7 [2020-10-21 22:02:39,694 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d609ed42/5da70cc9a08444ae9ec30e233c144a60 [2020-10-21 22:02:39,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-21 22:02:39,709 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-21 22:02:39,712 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-21 22:02:39,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-21 22:02:39,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-21 22:02:39,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 10:02:39" (1/1) ... [2020-10-21 22:02:39,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@204fd117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:39, skipping insertion in model container [2020-10-21 22:02:39,722 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 10:02:39" (1/1) ... [2020-10-21 22:02:39,731 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-21 22:02:39,779 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-21 22:02:40,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 22:02:40,296 INFO L203 MainTranslator]: Completed pre-run [2020-10-21 22:02:40,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 22:02:40,439 INFO L208 MainTranslator]: Completed translation [2020-10-21 22:02:40,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:40 WrapperNode [2020-10-21 22:02:40,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-21 22:02:40,441 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-21 22:02:40,441 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-21 22:02:40,441 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-21 22:02:40,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:40" (1/1) ... [2020-10-21 22:02:40,471 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:40" (1/1) ... [2020-10-21 22:02:40,496 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-21 22:02:40,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-21 22:02:40,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-21 22:02:40,497 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-21 22:02:40,507 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:40" (1/1) ... [2020-10-21 22:02:40,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:40" (1/1) ... [2020-10-21 22:02:40,510 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:40" (1/1) ... [2020-10-21 22:02:40,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:40" (1/1) ... [2020-10-21 22:02:40,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:40" (1/1) ... [2020-10-21 22:02:40,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:40" (1/1) ... [2020-10-21 22:02:40,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:40" (1/1) ... [2020-10-21 22:02:40,526 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-21 22:02:40,526 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-21 22:02:40,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-21 22:02:40,527 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-21 22:02:40,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:40" (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 [2020-10-21 22:02:40,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-21 22:02:40,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-21 22:02:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-21 22:02:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-21 22:02:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-21 22:02:40,598 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-21 22:02:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-21 22:02:40,598 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-21 22:02:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-21 22:02:40,599 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-21 22:02:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-21 22:02:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-21 22:02:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-21 22:02:40,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-21 22:02:40,601 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-21 22:02:41,020 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-21 22:02:41,020 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-21 22:02:41,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 10:02:41 BoogieIcfgContainer [2020-10-21 22:02:41,027 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-21 22:02:41,029 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-21 22:02:41,029 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-21 22:02:41,034 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-21 22:02:41,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 10:02:39" (1/3) ... [2020-10-21 22:02:41,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79d316b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 10:02:41, skipping insertion in model container [2020-10-21 22:02:41,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:40" (2/3) ... [2020-10-21 22:02:41,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79d316b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 10:02:41, skipping insertion in model container [2020-10-21 22:02:41,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 10:02:41" (3/3) ... [2020-10-21 22:02:41,038 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_tso.oepc.i [2020-10-21 22:02:41,050 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-21 22:02:41,050 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-21 22:02:41,060 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-21 22:02:41,061 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-21 22:02:41,097 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:41,097 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:41,097 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:41,098 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:41,098 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:41,099 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:41,099 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:41,099 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:41,100 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:41,100 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:41,100 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:41,101 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:41,101 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:41,101 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:41,102 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:41,102 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:41,102 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:41,103 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:41,107 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:41,107 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:41,107 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:41,108 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:41,113 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:41,114 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:41,114 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:41,114 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:41,116 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:41,117 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:41,117 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:41,117 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:41,120 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 22:02:41,131 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-21 22:02:41,149 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 22:02:41,149 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 22:02:41,150 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-21 22:02:41,150 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 22:02:41,150 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 22:02:41,150 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 22:02:41,150 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 22:02:41,150 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 22:02:41,163 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-21 22:02:41,165 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 77 transitions, 169 flow [2020-10-21 22:02:41,167 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 77 transitions, 169 flow [2020-10-21 22:02:41,169 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 77 transitions, 169 flow [2020-10-21 22:02:41,219 INFO L129 PetriNetUnfolder]: 3/74 cut-off events. [2020-10-21 22:02:41,219 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-21 22:02:41,224 INFO L80 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 74 events. 3/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2020-10-21 22:02:41,228 INFO L116 LiptonReduction]: Number of co-enabled transitions 1348 [2020-10-21 22:02:42,615 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-10-21 22:02:43,028 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-10-21 22:02:43,428 INFO L131 LiptonReduction]: Checked pairs total: 3056 [2020-10-21 22:02:43,428 INFO L133 LiptonReduction]: Total number of compositions: 75 [2020-10-21 22:02:43,438 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 21 transitions, 57 flow [2020-10-21 22:02:43,479 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-10-21 22:02:43,481 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-10-21 22:02:43,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-21 22:02:43,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:02:43,493 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:02:43,494 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:02:43,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:02:43,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1972841711, now seen corresponding path program 1 times [2020-10-21 22:02:43,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:02:43,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497553504] [2020-10-21 22:02:43,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:02:43,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:02:43,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:02:43,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497553504] [2020-10-21 22:02:43,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:02:43,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 22:02:43,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771196658] [2020-10-21 22:02:43,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 22:02:43,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:02:43,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 22:02:43,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:02:43,766 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-10-21 22:02:43,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:02:43,817 INFO L93 Difference]: Finished difference Result 220 states and 612 transitions. [2020-10-21 22:02:43,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 22:02:43,821 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-21 22:02:43,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:02:43,837 INFO L225 Difference]: With dead ends: 220 [2020-10-21 22:02:43,837 INFO L226 Difference]: Without dead ends: 172 [2020-10-21 22:02:43,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:02:43,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-21 22:02:43,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2020-10-21 22:02:43,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-21 22:02:43,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 460 transitions. [2020-10-21 22:02:43,904 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 460 transitions. Word has length 8 [2020-10-21 22:02:43,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:02:43,905 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 460 transitions. [2020-10-21 22:02:43,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 22:02:43,905 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 460 transitions. [2020-10-21 22:02:43,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 22:02:43,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:02:43,907 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:02:43,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-21 22:02:43,908 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:02:43,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:02:43,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1028549814, now seen corresponding path program 1 times [2020-10-21 22:02:43,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:02:43,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942714963] [2020-10-21 22:02:43,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:02:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:02:43,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:02:43,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942714963] [2020-10-21 22:02:44,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:02:44,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 22:02:44,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596065532] [2020-10-21 22:02:44,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 22:02:44,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:02:44,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 22:02:44,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:02:44,005 INFO L87 Difference]: Start difference. First operand 172 states and 460 transitions. Second operand 3 states. [2020-10-21 22:02:44,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:02:44,022 INFO L93 Difference]: Finished difference Result 163 states and 430 transitions. [2020-10-21 22:02:44,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 22:02:44,022 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-21 22:02:44,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:02:44,025 INFO L225 Difference]: With dead ends: 163 [2020-10-21 22:02:44,025 INFO L226 Difference]: Without dead ends: 163 [2020-10-21 22:02:44,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:02:44,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-21 22:02:44,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-10-21 22:02:44,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-21 22:02:44,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 430 transitions. [2020-10-21 22:02:44,047 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 430 transitions. Word has length 9 [2020-10-21 22:02:44,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:02:44,047 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 430 transitions. [2020-10-21 22:02:44,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 22:02:44,048 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 430 transitions. [2020-10-21 22:02:44,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-21 22:02:44,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:02:44,052 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:02:44,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-21 22:02:44,053 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:02:44,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:02:44,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1819291053, now seen corresponding path program 1 times [2020-10-21 22:02:44,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:02:44,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788815395] [2020-10-21 22:02:44,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:02:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:02:44,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:02:44,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788815395] [2020-10-21 22:02:44,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:02:44,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 22:02:44,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735786151] [2020-10-21 22:02:44,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 22:02:44,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:02:44,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 22:02:44,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:02:44,106 INFO L87 Difference]: Start difference. First operand 163 states and 430 transitions. Second operand 3 states. [2020-10-21 22:02:44,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:02:44,119 INFO L93 Difference]: Finished difference Result 211 states and 528 transitions. [2020-10-21 22:02:44,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 22:02:44,119 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-21 22:02:44,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:02:44,122 INFO L225 Difference]: With dead ends: 211 [2020-10-21 22:02:44,122 INFO L226 Difference]: Without dead ends: 175 [2020-10-21 22:02:44,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:02:44,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-21 22:02:44,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 157. [2020-10-21 22:02:44,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-21 22:02:44,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 393 transitions. [2020-10-21 22:02:44,140 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 393 transitions. Word has length 10 [2020-10-21 22:02:44,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:02:44,140 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 393 transitions. [2020-10-21 22:02:44,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 22:02:44,140 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 393 transitions. [2020-10-21 22:02:44,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-21 22:02:44,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:02:44,142 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:02:44,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-21 22:02:44,142 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:02:44,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:02:44,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1819353363, now seen corresponding path program 1 times [2020-10-21 22:02:44,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:02:44,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382861662] [2020-10-21 22:02:44,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:02:44,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:02:44,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:02:44,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382861662] [2020-10-21 22:02:44,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:02:44,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 22:02:44,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422225103] [2020-10-21 22:02:44,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 22:02:44,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:02:44,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 22:02:44,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 22:02:44,202 INFO L87 Difference]: Start difference. First operand 157 states and 393 transitions. Second operand 4 states. [2020-10-21 22:02:44,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:02:44,229 INFO L93 Difference]: Finished difference Result 196 states and 467 transitions. [2020-10-21 22:02:44,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-21 22:02:44,230 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-21 22:02:44,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:02:44,232 INFO L225 Difference]: With dead ends: 196 [2020-10-21 22:02:44,232 INFO L226 Difference]: Without dead ends: 124 [2020-10-21 22:02:44,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:02:44,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-21 22:02:44,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-10-21 22:02:44,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-21 22:02:44,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 291 transitions. [2020-10-21 22:02:44,243 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 291 transitions. Word has length 10 [2020-10-21 22:02:44,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:02:44,244 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 291 transitions. [2020-10-21 22:02:44,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 22:02:44,244 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 291 transitions. [2020-10-21 22:02:44,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-21 22:02:44,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:02:44,245 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:02:44,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-21 22:02:44,246 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:02:44,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:02:44,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1404816041, now seen corresponding path program 1 times [2020-10-21 22:02:44,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:02:44,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598799089] [2020-10-21 22:02:44,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:02:44,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:02:44,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:02:44,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598799089] [2020-10-21 22:02:44,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:02:44,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 22:02:44,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146085927] [2020-10-21 22:02:44,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 22:02:44,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:02:44,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 22:02:44,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 22:02:44,371 INFO L87 Difference]: Start difference. First operand 124 states and 291 transitions. Second operand 4 states. [2020-10-21 22:02:44,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:02:44,402 INFO L93 Difference]: Finished difference Result 144 states and 309 transitions. [2020-10-21 22:02:44,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-21 22:02:44,403 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-21 22:02:44,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:02:44,404 INFO L225 Difference]: With dead ends: 144 [2020-10-21 22:02:44,405 INFO L226 Difference]: Without dead ends: 108 [2020-10-21 22:02:44,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:02:44,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-21 22:02:44,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-10-21 22:02:44,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-21 22:02:44,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 232 transitions. [2020-10-21 22:02:44,413 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 232 transitions. Word has length 11 [2020-10-21 22:02:44,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:02:44,413 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 232 transitions. [2020-10-21 22:02:44,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 22:02:44,414 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 232 transitions. [2020-10-21 22:02:44,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 22:02:44,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:02:44,415 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:02:44,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-21 22:02:44,415 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:02:44,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:02:44,416 INFO L82 PathProgramCache]: Analyzing trace with hash 693308811, now seen corresponding path program 1 times [2020-10-21 22:02:44,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:02:44,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641623640] [2020-10-21 22:02:44,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:02:44,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:02:44,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:02:44,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641623640] [2020-10-21 22:02:44,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:02:44,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:02:44,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402938202] [2020-10-21 22:02:44,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:02:44,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:02:44,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:02:44,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:02:44,496 INFO L87 Difference]: Start difference. First operand 108 states and 232 transitions. Second operand 5 states. [2020-10-21 22:02:44,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:02:44,551 INFO L93 Difference]: Finished difference Result 108 states and 214 transitions. [2020-10-21 22:02:44,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:02:44,552 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-21 22:02:44,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:02:44,553 INFO L225 Difference]: With dead ends: 108 [2020-10-21 22:02:44,553 INFO L226 Difference]: Without dead ends: 84 [2020-10-21 22:02:44,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-21 22:02:44,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-21 22:02:44,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-10-21 22:02:44,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-21 22:02:44,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 164 transitions. [2020-10-21 22:02:44,559 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 164 transitions. Word has length 12 [2020-10-21 22:02:44,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:02:44,559 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 164 transitions. [2020-10-21 22:02:44,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:02:44,560 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 164 transitions. [2020-10-21 22:02:44,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-21 22:02:44,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:02:44,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:02:44,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-21 22:02:44,561 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:02:44,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:02:44,562 INFO L82 PathProgramCache]: Analyzing trace with hash 489181955, now seen corresponding path program 1 times [2020-10-21 22:02:44,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:02:44,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902290187] [2020-10-21 22:02:44,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:02:44,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:02:44,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:02:44,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902290187] [2020-10-21 22:02:44,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:02:44,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-21 22:02:44,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212021335] [2020-10-21 22:02:44,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-21 22:02:44,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:02:44,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-21 22:02:44,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-21 22:02:44,695 INFO L87 Difference]: Start difference. First operand 84 states and 164 transitions. Second operand 6 states. [2020-10-21 22:02:44,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:02:44,771 INFO L93 Difference]: Finished difference Result 80 states and 154 transitions. [2020-10-21 22:02:44,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-21 22:02:44,771 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-21 22:02:44,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:02:44,772 INFO L225 Difference]: With dead ends: 80 [2020-10-21 22:02:44,772 INFO L226 Difference]: Without dead ends: 33 [2020-10-21 22:02:44,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:02:44,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-21 22:02:44,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-21 22:02:44,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-21 22:02:44,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 51 transitions. [2020-10-21 22:02:44,776 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 51 transitions. Word has length 14 [2020-10-21 22:02:44,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:02:44,777 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 51 transitions. [2020-10-21 22:02:44,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-21 22:02:44,777 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2020-10-21 22:02:44,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-21 22:02:44,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:02:44,779 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:02:44,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-21 22:02:44,780 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:02:44,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:02:44,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1917932335, now seen corresponding path program 1 times [2020-10-21 22:02:44,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:02:44,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121385413] [2020-10-21 22:02:44,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:02:44,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:02:44,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:02:44,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121385413] [2020-10-21 22:02:44,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:02:44,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:02:44,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424733882] [2020-10-21 22:02:44,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 22:02:44,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:02:44,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 22:02:44,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 22:02:44,863 INFO L87 Difference]: Start difference. First operand 33 states and 51 transitions. Second operand 4 states. [2020-10-21 22:02:44,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:02:44,877 INFO L93 Difference]: Finished difference Result 32 states and 50 transitions. [2020-10-21 22:02:44,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-21 22:02:44,878 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-21 22:02:44,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:02:44,878 INFO L225 Difference]: With dead ends: 32 [2020-10-21 22:02:44,878 INFO L226 Difference]: Without dead ends: 0 [2020-10-21 22:02:44,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:02:44,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-21 22:02:44,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-21 22:02:44,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-21 22:02:44,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-21 22:02:44,880 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-10-21 22:02:44,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:02:44,880 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-21 22:02:44,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 22:02:44,880 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-21 22:02:44,880 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-21 22:02:44,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-21 22:02:44,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 10:02:44 BasicIcfg [2020-10-21 22:02:44,885 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-21 22:02:44,887 INFO L168 Benchmark]: Toolchain (without parser) took 5182.10 ms. Allocated memory was 140.5 MB in the beginning and 277.9 MB in the end (delta: 137.4 MB). Free memory was 102.0 MB in the beginning and 219.9 MB in the end (delta: -117.9 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2020-10-21 22:02:44,888 INFO L168 Benchmark]: CDTParser took 4.18 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-21 22:02:44,888 INFO L168 Benchmark]: CACSL2BoogieTranslator took 727.66 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 100.9 MB in the beginning and 158.8 MB in the end (delta: -57.9 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-10-21 22:02:44,889 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.95 ms. Allocated memory is still 204.5 MB. Free memory was 158.8 MB in the beginning and 156.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-10-21 22:02:44,890 INFO L168 Benchmark]: Boogie Preprocessor took 29.20 ms. Allocated memory is still 204.5 MB. Free memory was 156.1 MB in the beginning and 154.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-21 22:02:44,891 INFO L168 Benchmark]: RCFGBuilder took 501.29 ms. Allocated memory is still 204.5 MB. Free memory was 154.8 MB in the beginning and 130.9 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-10-21 22:02:44,892 INFO L168 Benchmark]: TraceAbstraction took 3855.85 ms. Allocated memory was 204.5 MB in the beginning and 277.9 MB in the end (delta: 73.4 MB). Free memory was 130.2 MB in the beginning and 219.9 MB in the end (delta: -89.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-21 22:02:44,896 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 4.18 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 727.66 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 100.9 MB in the beginning and 158.8 MB in the end (delta: -57.9 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 55.95 ms. Allocated memory is still 204.5 MB. Free memory was 158.8 MB in the beginning and 156.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.20 ms. Allocated memory is still 204.5 MB. Free memory was 156.1 MB in the beginning and 154.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 501.29 ms. Allocated memory is still 204.5 MB. Free memory was 154.8 MB in the beginning and 130.9 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3855.85 ms. Allocated memory was 204.5 MB in the beginning and 277.9 MB in the end (delta: 73.4 MB). Free memory was 130.2 MB in the beginning and 219.9 MB in the end (delta: -89.6 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 936 VarBasedMoverChecksPositive, 44 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 36 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 72 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.2s, 84 PlacesBefore, 30 PlacesAfterwards, 77 TransitionsBefore, 21 TransitionsAfterwards, 1348 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 75 TotalNumberOfCompositions, 3056 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 134 SDtfs, 110 SDslu, 162 SDs, 0 SdLazy, 101 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 2616 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...