/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/safe014_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 15:04:52,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 15:04:52,369 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 15:04:52,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 15:04:52,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 15:04:52,419 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 15:04:52,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 15:04:52,426 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 15:04:52,429 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 15:04:52,431 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 15:04:52,432 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 15:04:52,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 15:04:52,434 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 15:04:52,436 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 15:04:52,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 15:04:52,440 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 15:04:52,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 15:04:52,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 15:04:52,444 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 15:04:52,451 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 15:04:52,454 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 15:04:52,455 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 15:04:52,456 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 15:04:52,456 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 15:04:52,473 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 15:04:52,473 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 15:04:52,474 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 15:04:52,475 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 15:04:52,475 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 15:04:52,476 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 15:04:52,478 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 15:04:52,479 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 15:04:52,479 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 15:04:52,480 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 15:04:52,481 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 15:04:52,484 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 15:04:52,485 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 15:04:52,485 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 15:04:52,485 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 15:04:52,486 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 15:04:52,487 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 15:04:52,488 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 [2020-10-11 15:04:52,533 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 15:04:52,533 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 15:04:52,535 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 15:04:52,535 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 15:04:52,535 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 15:04:52,536 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 15:04:52,536 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 15:04:52,536 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 15:04:52,536 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 15:04:52,536 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 15:04:52,537 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 15:04:52,538 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 15:04:52,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 15:04:52,538 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 15:04:52,539 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 15:04:52,539 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 15:04:52,539 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 15:04:52,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 15:04:52,539 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 15:04:52,540 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 15:04:52,540 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 15:04:52,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 15:04:52,541 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 15:04:52,541 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 15:04:52,541 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 15:04:52,541 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 15:04:52,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 15:04:52,542 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-11 15:04:52,542 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-11 15:04:52,542 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 15:04:52,854 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 15:04:52,869 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 15:04:52,873 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 15:04:52,875 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 15:04:52,875 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 15:04:52,876 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_tso.oepc.i [2020-10-11 15:04:52,938 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd07d4c64/c0459ebc4df547ad9b31c351da54cf74/FLAG38833219e [2020-10-11 15:04:53,484 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 15:04:53,485 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_tso.oepc.i [2020-10-11 15:04:53,503 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd07d4c64/c0459ebc4df547ad9b31c351da54cf74/FLAG38833219e [2020-10-11 15:04:53,767 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd07d4c64/c0459ebc4df547ad9b31c351da54cf74 [2020-10-11 15:04:53,777 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 15:04:53,778 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 15:04:53,779 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 15:04:53,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 15:04:53,783 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 15:04:53,784 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 03:04:53" (1/1) ... [2020-10-11 15:04:53,787 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@122f49bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:53, skipping insertion in model container [2020-10-11 15:04:53,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 03:04:53" (1/1) ... [2020-10-11 15:04:53,795 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 15:04:53,861 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 15:04:54,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 15:04:54,360 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 15:04:54,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 15:04:54,524 INFO L208 MainTranslator]: Completed translation [2020-10-11 15:04:54,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:54 WrapperNode [2020-10-11 15:04:54,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 15:04:54,527 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 15:04:54,527 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 15:04:54,527 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 15:04:54,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:54" (1/1) ... [2020-10-11 15:04:54,551 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:54" (1/1) ... [2020-10-11 15:04:54,570 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 15:04:54,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 15:04:54,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 15:04:54,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 15:04:54,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:54" (1/1) ... [2020-10-11 15:04:54,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:54" (1/1) ... [2020-10-11 15:04:54,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:54" (1/1) ... [2020-10-11 15:04:54,583 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:54" (1/1) ... [2020-10-11 15:04:54,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:54" (1/1) ... [2020-10-11 15:04:54,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:54" (1/1) ... [2020-10-11 15:04:54,594 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:54" (1/1) ... [2020-10-11 15:04:54,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 15:04:54,598 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 15:04:54,598 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 15:04:54,598 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 15:04:54,599 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:54" (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 [2020-10-11 15:04:54,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 15:04:54,668 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-11 15:04:54,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 15:04:54,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 15:04:54,668 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-11 15:04:54,668 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-11 15:04:54,668 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-11 15:04:54,669 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-11 15:04:54,669 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-11 15:04:54,669 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-11 15:04:54,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-11 15:04:54,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 15:04:54,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 15:04:54,671 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 15:04:55,007 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 15:04:55,007 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-11 15:04:55,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 03:04:55 BoogieIcfgContainer [2020-10-11 15:04:55,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 15:04:55,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 15:04:55,011 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 15:04:55,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 15:04:55,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 03:04:53" (1/3) ... [2020-10-11 15:04:55,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a8420cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 03:04:55, skipping insertion in model container [2020-10-11 15:04:55,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:54" (2/3) ... [2020-10-11 15:04:55,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a8420cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 03:04:55, skipping insertion in model container [2020-10-11 15:04:55,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 03:04:55" (3/3) ... [2020-10-11 15:04:55,018 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_tso.oepc.i [2020-10-11 15:04:55,032 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-11 15:04:55,032 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 15:04:55,041 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 15:04:55,042 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 15:04:55,071 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:55,072 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:55,072 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:55,072 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:55,073 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:55,073 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:55,074 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:55,074 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:55,074 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:55,074 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:55,075 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:55,075 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:55,076 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:55,076 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:55,076 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:55,076 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:55,077 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:55,077 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:55,081 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:55,081 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:55,081 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:55,082 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:55,088 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:55,089 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:55,089 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:55,089 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:55,091 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:55,092 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:55,092 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:55,092 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:55,108 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-11 15:04:55,130 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 15:04:55,131 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-11 15:04:55,131 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 15:04:55,131 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 15:04:55,131 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 15:04:55,131 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 15:04:55,131 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 15:04:55,132 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 15:04:55,145 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-11 15:04:55,148 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-11 15:04:55,151 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-11 15:04:55,153 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-11 15:04:55,198 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-11 15:04:55,198 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 15:04:55,204 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-11 15:04:55,207 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-11 15:04:56,781 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-10-11 15:04:56,847 INFO L132 LiptonReduction]: Checked pairs total: 2810 [2020-10-11 15:04:56,847 INFO L134 LiptonReduction]: Total number of compositions: 60 [2020-10-11 15:04:56,854 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-11 15:04:56,884 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-11 15:04:56,886 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-11 15:04:56,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-11 15:04:56,894 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:04:56,895 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:04:56,896 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:04:56,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:04:56,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-10-11 15:04:56,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:04:56,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739164194] [2020-10-11 15:04:56,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:04:57,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:04:57,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:04:57,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739164194] [2020-10-11 15:04:57,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:04:57,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-11 15:04:57,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800186759] [2020-10-11 15:04:57,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 15:04:57,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:04:57,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 15:04:57,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 15:04:57,181 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-11 15:04:57,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:04:57,225 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-11 15:04:57,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 15:04:57,227 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-11 15:04:57,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:04:57,244 INFO L225 Difference]: With dead ends: 282 [2020-10-11 15:04:57,244 INFO L226 Difference]: Without dead ends: 218 [2020-10-11 15:04:57,245 INFO L673 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 [2020-10-11 15:04:57,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-11 15:04:57,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-11 15:04:57,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-11 15:04:57,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-11 15:04:57,352 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-11 15:04:57,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:04:57,354 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-11 15:04:57,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 15:04:57,355 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-11 15:04:57,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-11 15:04:57,357 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:04:57,357 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:04:57,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 15:04:57,358 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:04:57,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:04:57,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1035713695, now seen corresponding path program 1 times [2020-10-11 15:04:57,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:04:57,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778210345] [2020-10-11 15:04:57,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:04:57,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:04:57,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:04:57,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778210345] [2020-10-11 15:04:57,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:04:57,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 15:04:57,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692525982] [2020-10-11 15:04:57,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 15:04:57,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:04:57,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 15:04:57,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:04:57,447 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-10-11 15:04:57,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:04:57,474 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-10-11 15:04:57,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-11 15:04:57,475 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-11 15:04:57,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:04:57,477 INFO L225 Difference]: With dead ends: 242 [2020-10-11 15:04:57,477 INFO L226 Difference]: Without dead ends: 116 [2020-10-11 15:04:57,478 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 [2020-10-11 15:04:57,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-11 15:04:57,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-10-11 15:04:57,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-11 15:04:57,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 284 transitions. [2020-10-11 15:04:57,487 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 284 transitions. Word has length 9 [2020-10-11 15:04:57,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:04:57,488 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 284 transitions. [2020-10-11 15:04:57,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 15:04:57,488 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 284 transitions. [2020-10-11 15:04:57,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 15:04:57,489 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:04:57,489 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:04:57,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 15:04:57,490 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:04:57,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:04:57,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1517475135, now seen corresponding path program 1 times [2020-10-11 15:04:57,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:04:57,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983356291] [2020-10-11 15:04:57,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:04:57,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:04:57,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:04:57,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983356291] [2020-10-11 15:04:57,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:04:57,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 15:04:57,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008576719] [2020-10-11 15:04:57,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 15:04:57,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:04:57,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 15:04:57,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:04:57,567 INFO L87 Difference]: Start difference. First operand 116 states and 284 transitions. Second operand 4 states. [2020-10-11 15:04:57,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:04:57,601 INFO L93 Difference]: Finished difference Result 164 states and 394 transitions. [2020-10-11 15:04:57,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-11 15:04:57,602 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-11 15:04:57,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:04:57,603 INFO L225 Difference]: With dead ends: 164 [2020-10-11 15:04:57,603 INFO L226 Difference]: Without dead ends: 92 [2020-10-11 15:04:57,605 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 [2020-10-11 15:04:57,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-11 15:04:57,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-10-11 15:04:57,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-11 15:04:57,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 214 transitions. [2020-10-11 15:04:57,613 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 214 transitions. Word has length 11 [2020-10-11 15:04:57,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:04:57,614 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 214 transitions. [2020-10-11 15:04:57,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 15:04:57,614 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 214 transitions. [2020-10-11 15:04:57,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 15:04:57,615 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:04:57,615 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:04:57,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 15:04:57,616 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:04:57,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:04:57,618 INFO L82 PathProgramCache]: Analyzing trace with hash -142823170, now seen corresponding path program 1 times [2020-10-11 15:04:57,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:04:57,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944184937] [2020-10-11 15:04:57,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:04:57,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:04:57,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:04:57,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944184937] [2020-10-11 15:04:57,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:04:57,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:04:57,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153461838] [2020-10-11 15:04:57,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 15:04:57,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:04:57,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 15:04:57,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:04:57,720 INFO L87 Difference]: Start difference. First operand 92 states and 214 transitions. Second operand 4 states. [2020-10-11 15:04:57,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:04:57,746 INFO L93 Difference]: Finished difference Result 122 states and 275 transitions. [2020-10-11 15:04:57,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 15:04:57,747 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-11 15:04:57,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:04:57,748 INFO L225 Difference]: With dead ends: 122 [2020-10-11 15:04:57,748 INFO L226 Difference]: Without dead ends: 68 [2020-10-11 15:04:57,749 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 [2020-10-11 15:04:57,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-11 15:04:57,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-11 15:04:57,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-11 15:04:57,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-10-11 15:04:57,754 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 12 [2020-10-11 15:04:57,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:04:57,754 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-10-11 15:04:57,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 15:04:57,755 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-10-11 15:04:57,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 15:04:57,756 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:04:57,756 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:04:57,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 15:04:57,756 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:04:57,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:04:57,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1246852910, now seen corresponding path program 1 times [2020-10-11 15:04:57,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:04:57,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5595122] [2020-10-11 15:04:57,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:04:57,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:04:57,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:04:57,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5595122] [2020-10-11 15:04:57,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:04:57,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 15:04:57,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127683486] [2020-10-11 15:04:57,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 15:04:57,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:04:57,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 15:04:57,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:04:57,852 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 4 states. [2020-10-11 15:04:57,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:04:57,885 INFO L93 Difference]: Finished difference Result 81 states and 157 transitions. [2020-10-11 15:04:57,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 15:04:57,886 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-11 15:04:57,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:04:57,887 INFO L225 Difference]: With dead ends: 81 [2020-10-11 15:04:57,887 INFO L226 Difference]: Without dead ends: 59 [2020-10-11 15:04:57,887 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 [2020-10-11 15:04:57,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-11 15:04:57,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-11 15:04:57,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-11 15:04:57,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-10-11 15:04:57,891 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 13 [2020-10-11 15:04:57,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:04:57,892 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-10-11 15:04:57,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 15:04:57,892 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-10-11 15:04:57,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 15:04:57,893 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:04:57,893 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:04:57,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 15:04:57,894 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:04:57,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:04:57,894 INFO L82 PathProgramCache]: Analyzing trace with hash 433937672, now seen corresponding path program 1 times [2020-10-11 15:04:57,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:04:57,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641669233] [2020-10-11 15:04:57,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:04:57,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:04:57,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:04:57,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641669233] [2020-10-11 15:04:57,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:04:57,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:04:57,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727531676] [2020-10-11 15:04:57,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 15:04:57,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:04:57,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 15:04:57,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:04:57,961 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 5 states. [2020-10-11 15:04:57,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:04:57,997 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2020-10-11 15:04:57,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 15:04:57,998 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-11 15:04:57,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:04:57,999 INFO L225 Difference]: With dead ends: 60 [2020-10-11 15:04:57,999 INFO L226 Difference]: Without dead ends: 45 [2020-10-11 15:04:57,999 INFO L673 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 [2020-10-11 15:04:58,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-11 15:04:58,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-11 15:04:58,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-11 15:04:58,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-10-11 15:04:58,002 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 14 [2020-10-11 15:04:58,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:04:58,003 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-10-11 15:04:58,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 15:04:58,003 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-10-11 15:04:58,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 15:04:58,004 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:04:58,004 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:04:58,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 15:04:58,004 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:04:58,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:04:58,005 INFO L82 PathProgramCache]: Analyzing trace with hash 567169455, now seen corresponding path program 1 times [2020-10-11 15:04:58,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:04:58,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263141605] [2020-10-11 15:04:58,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:04:58,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:04:58,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:04:58,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263141605] [2020-10-11 15:04:58,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:04:58,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-11 15:04:58,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489005117] [2020-10-11 15:04:58,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 15:04:58,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:04:58,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 15:04:58,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-11 15:04:58,082 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 6 states. [2020-10-11 15:04:58,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:04:58,133 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-10-11 15:04:58,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 15:04:58,134 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-11 15:04:58,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:04:58,135 INFO L225 Difference]: With dead ends: 42 [2020-10-11 15:04:58,135 INFO L226 Difference]: Without dead ends: 36 [2020-10-11 15:04:58,135 INFO L673 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 [2020-10-11 15:04:58,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-11 15:04:58,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-11 15:04:58,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-11 15:04:58,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-10-11 15:04:58,140 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-10-11 15:04:58,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:04:58,140 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-10-11 15:04:58,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 15:04:58,140 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-10-11 15:04:58,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-11 15:04:58,141 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:04:58,141 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:04:58,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 15:04:58,141 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:04:58,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:04:58,142 INFO L82 PathProgramCache]: Analyzing trace with hash -412776350, now seen corresponding path program 1 times [2020-10-11 15:04:58,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:04:58,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919109024] [2020-10-11 15:04:58,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:04:58,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:04:58,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:04:58,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919109024] [2020-10-11 15:04:58,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:04:58,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:04:58,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961176547] [2020-10-11 15:04:58,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 15:04:58,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:04:58,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 15:04:58,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:04:58,175 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-10-11 15:04:58,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:04:58,187 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-10-11 15:04:58,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-11 15:04:58,187 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-11 15:04:58,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:04:58,188 INFO L225 Difference]: With dead ends: 35 [2020-10-11 15:04:58,188 INFO L226 Difference]: Without dead ends: 0 [2020-10-11 15:04:58,188 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 [2020-10-11 15:04:58,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-11 15:04:58,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-11 15:04:58,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-11 15:04:58,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-11 15:04:58,189 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-11 15:04:58,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:04:58,190 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-11 15:04:58,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 15:04:58,190 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-11 15:04:58,190 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-11 15:04:58,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-11 15:04:58,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 03:04:58 BasicIcfg [2020-10-11 15:04:58,194 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 15:04:58,196 INFO L168 Benchmark]: Toolchain (without parser) took 4417.91 ms. Allocated memory was 249.6 MB in the beginning and 369.6 MB in the end (delta: 120.1 MB). Free memory was 202.8 MB in the beginning and 230.3 MB in the end (delta: -27.5 MB). Peak memory consumption was 92.5 MB. Max. memory is 14.2 GB. [2020-10-11 15:04:58,197 INFO L168 Benchmark]: CDTParser took 0.55 ms. Allocated memory is still 249.6 MB. Free memory is still 223.4 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 15:04:58,198 INFO L168 Benchmark]: CACSL2BoogieTranslator took 747.37 ms. Allocated memory was 249.6 MB in the beginning and 309.9 MB in the end (delta: 60.3 MB). Free memory was 202.8 MB in the beginning and 260.7 MB in the end (delta: -57.9 MB). Peak memory consumption was 27.0 MB. Max. memory is 14.2 GB. [2020-10-11 15:04:58,198 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.63 ms. Allocated memory is still 309.9 MB. Free memory was 260.7 MB in the beginning and 258.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 15:04:58,199 INFO L168 Benchmark]: Boogie Preprocessor took 26.57 ms. Allocated memory is still 309.9 MB. Free memory was 258.1 MB in the beginning and 255.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 15:04:58,200 INFO L168 Benchmark]: RCFGBuilder took 412.50 ms. Allocated memory is still 309.9 MB. Free memory was 255.6 MB in the beginning and 233.8 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-11 15:04:58,201 INFO L168 Benchmark]: TraceAbstraction took 3182.93 ms. Allocated memory was 309.9 MB in the beginning and 369.6 MB in the end (delta: 59.8 MB). Free memory was 233.8 MB in the beginning and 230.3 MB in the end (delta: 3.5 MB). Peak memory consumption was 63.2 MB. Max. memory is 14.2 GB. [2020-10-11 15:04:58,205 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55 ms. Allocated memory is still 249.6 MB. Free memory is still 223.4 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 747.37 ms. Allocated memory was 249.6 MB in the beginning and 309.9 MB in the end (delta: 60.3 MB). Free memory was 202.8 MB in the beginning and 260.7 MB in the end (delta: -57.9 MB). Peak memory consumption was 27.0 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 43.63 ms. Allocated memory is still 309.9 MB. Free memory was 260.7 MB in the beginning and 258.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 26.57 ms. Allocated memory is still 309.9 MB. Free memory was 258.1 MB in the beginning and 255.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 412.50 ms. Allocated memory is still 309.9 MB. Free memory was 255.6 MB in the beginning and 233.8 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3182.93 ms. Allocated memory was 309.9 MB in the beginning and 369.6 MB in the end (delta: 59.8 MB). Free memory was 233.8 MB in the beginning and 230.3 MB in the end (delta: 3.5 MB). Peak memory consumption was 63.2 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 843 VarBasedMoverChecksPositive, 42 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 36 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 61 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 78 PlacesBefore, 31 PlacesAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 60 TotalNumberOfCompositions, 2810 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 138 SDtfs, 138 SDslu, 173 SDs, 0 SdLazy, 111 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 3141 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...