/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe019_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 06:45:48,414 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 06:45:48,417 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 06:45:48,436 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 06:45:48,436 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 06:45:48,438 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 06:45:48,440 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 06:45:48,446 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 06:45:48,448 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 06:45:48,450 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 06:45:48,452 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 06:45:48,454 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 06:45:48,455 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 06:45:48,458 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 06:45:48,460 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 06:45:48,462 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 06:45:48,464 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 06:45:48,466 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 06:45:48,468 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 06:45:48,473 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 06:45:48,478 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 06:45:48,482 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 06:45:48,483 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 06:45:48,484 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 06:45:48,486 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 06:45:48,486 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 06:45:48,486 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 06:45:48,488 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 06:45:48,490 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 06:45:48,491 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 06:45:48,491 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 06:45:48,492 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 06:45:48,493 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 06:45:48,493 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 06:45:48,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 06:45:48,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 06:45:48,495 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 06:45:48,496 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 06:45:48,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 06:45:48,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 06:45:48,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 06:45:48,499 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2020-04-18 06:45:48,522 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 06:45:48,523 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 06:45:48,525 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 06:45:48,525 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 06:45:48,526 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 06:45:48,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 06:45:48,526 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 06:45:48,526 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 06:45:48,527 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 06:45:48,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 06:45:48,528 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 06:45:48,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 06:45:48,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 06:45:48,529 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 06:45:48,529 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 06:45:48,530 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 06:45:48,530 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 06:45:48,530 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 06:45:48,530 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 06:45:48,532 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 06:45:48,533 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 06:45:48,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 06:45:48,533 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 06:45:48,533 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 06:45:48,534 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 06:45:48,534 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 06:45:48,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 06:45:48,534 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 06:45:48,534 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 06:45:48,535 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 06:45:48,809 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 06:45:48,822 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 06:45:48,825 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 06:45:48,828 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 06:45:48,828 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 06:45:48,829 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_tso.oepc.i [2020-04-18 06:45:48,904 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18cff2f67/42c6a2f7a2244ff79a14025411148bca/FLAGb98f65c33 [2020-04-18 06:45:49,515 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 06:45:49,516 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_tso.oepc.i [2020-04-18 06:45:49,538 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18cff2f67/42c6a2f7a2244ff79a14025411148bca/FLAGb98f65c33 [2020-04-18 06:45:49,759 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18cff2f67/42c6a2f7a2244ff79a14025411148bca [2020-04-18 06:45:49,768 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 06:45:49,785 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 06:45:49,787 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 06:45:49,787 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 06:45:49,790 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 06:45:49,792 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:45:49" (1/1) ... [2020-04-18 06:45:49,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b2ad1c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:45:49, skipping insertion in model container [2020-04-18 06:45:49,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:45:49" (1/1) ... [2020-04-18 06:45:49,803 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 06:45:49,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 06:45:50,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 06:45:50,406 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 06:45:50,474 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 06:45:50,572 INFO L208 MainTranslator]: Completed translation [2020-04-18 06:45:50,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:45:50 WrapperNode [2020-04-18 06:45:50,574 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 06:45:50,575 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 06:45:50,575 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 06:45:50,575 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 06:45:50,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:45:50" (1/1) ... [2020-04-18 06:45:50,604 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:45:50" (1/1) ... [2020-04-18 06:45:50,627 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 06:45:50,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 06:45:50,627 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 06:45:50,627 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 06:45:50,637 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:45:50" (1/1) ... [2020-04-18 06:45:50,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:45:50" (1/1) ... [2020-04-18 06:45:50,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:45:50" (1/1) ... [2020-04-18 06:45:50,640 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:45:50" (1/1) ... [2020-04-18 06:45:50,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:45:50" (1/1) ... [2020-04-18 06:45:50,654 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:45:50" (1/1) ... [2020-04-18 06:45:50,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:45:50" (1/1) ... [2020-04-18 06:45:50,660 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 06:45:50,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 06:45:50,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 06:45:50,668 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 06:45:50,668 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:45:50" (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 [2020-04-18 06:45:50,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 06:45:50,726 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 06:45:50,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 06:45:50,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 06:45:50,726 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 06:45:50,727 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 06:45:50,727 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 06:45:50,727 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 06:45:50,727 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 06:45:50,727 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 06:45:50,727 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-04-18 06:45:50,728 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-04-18 06:45:50,728 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 06:45:50,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 06:45:50,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 06:45:50,729 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 06:45:51,150 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 06:45:51,150 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 06:45:51,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:45:51 BoogieIcfgContainer [2020-04-18 06:45:51,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 06:45:51,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 06:45:51,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 06:45:51,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 06:45:51,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 06:45:49" (1/3) ... [2020-04-18 06:45:51,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ecc5bbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:45:51, skipping insertion in model container [2020-04-18 06:45:51,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:45:50" (2/3) ... [2020-04-18 06:45:51,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ecc5bbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:45:51, skipping insertion in model container [2020-04-18 06:45:51,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:45:51" (3/3) ... [2020-04-18 06:45:51,165 INFO L109 eAbstractionObserver]: Analyzing ICFG safe019_tso.oepc.i [2020-04-18 06:45:51,176 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 06:45:51,176 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 06:45:51,184 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 06:45:51,185 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 06:45:51,214 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:45:51,215 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:45:51,215 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:45:51,215 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:45:51,216 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:45:51,216 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:45:51,217 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:45:51,217 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:45:51,217 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:45:51,218 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:45:51,218 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:45:51,218 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:45:51,219 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:45:51,219 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:45:51,219 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:45:51,220 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:45:51,220 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:45:51,220 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:45:51,221 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:45:51,221 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:45:51,221 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:45:51,222 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:45:51,222 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:45:51,223 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:45:51,227 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:45:51,227 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:45:51,228 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:45:51,228 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:45:51,234 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:45:51,234 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:45:51,234 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:45:51,235 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:45:51,238 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:45:51,238 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:45:51,238 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:45:51,239 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:45:51,242 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:45:51,242 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:45:51,242 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:45:51,243 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:45:51,259 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-18 06:45:51,282 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 06:45:51,283 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 06:45:51,283 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 06:45:51,283 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 06:45:51,283 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 06:45:51,283 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 06:45:51,283 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 06:45:51,284 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 06:45:51,298 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 81 transitions, 182 flow [2020-04-18 06:45:56,649 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 47252 states. [2020-04-18 06:45:56,651 INFO L276 IsEmpty]: Start isEmpty. Operand 47252 states. [2020-04-18 06:45:56,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 06:45:56,729 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:45:56,731 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:45:56,731 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:45:56,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:45:56,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1175723912, now seen corresponding path program 1 times [2020-04-18 06:45:56,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:45:56,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92374144] [2020-04-18 06:45:56,749 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:45:56,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:45:57,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:45:57,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92374144] [2020-04-18 06:45:57,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:45:57,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:45:57,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083081429] [2020-04-18 06:45:57,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:45:57,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:45:57,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:45:57,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:45:57,289 INFO L87 Difference]: Start difference. First operand 47252 states. Second operand 7 states. [2020-04-18 06:45:59,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:45:59,692 INFO L93 Difference]: Finished difference Result 97124 states and 412900 transitions. [2020-04-18 06:45:59,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 06:45:59,694 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-04-18 06:45:59,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:45:59,963 INFO L225 Difference]: With dead ends: 97124 [2020-04-18 06:45:59,964 INFO L226 Difference]: Without dead ends: 28448 [2020-04-18 06:45:59,968 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 06:46:00,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28448 states. [2020-04-18 06:46:01,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28448 to 24128. [2020-04-18 06:46:01,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24128 states. [2020-04-18 06:46:01,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24128 states to 24128 states and 100604 transitions. [2020-04-18 06:46:01,535 INFO L78 Accepts]: Start accepts. Automaton has 24128 states and 100604 transitions. Word has length 40 [2020-04-18 06:46:01,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:46:01,537 INFO L479 AbstractCegarLoop]: Abstraction has 24128 states and 100604 transitions. [2020-04-18 06:46:01,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:46:01,537 INFO L276 IsEmpty]: Start isEmpty. Operand 24128 states and 100604 transitions. [2020-04-18 06:46:01,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 06:46:01,583 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:46:01,583 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:46:01,584 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:46:01,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:46:01,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1653000969, now seen corresponding path program 1 times [2020-04-18 06:46:01,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:46:01,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133483276] [2020-04-18 06:46:01,585 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:46:01,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:46:01,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:46:01,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133483276] [2020-04-18 06:46:01,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:46:01,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:46:01,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571522025] [2020-04-18 06:46:01,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:46:01,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:46:01,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:46:01,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:46:01,820 INFO L87 Difference]: Start difference. First operand 24128 states and 100604 transitions. Second operand 7 states. [2020-04-18 06:46:03,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:46:03,748 INFO L93 Difference]: Finished difference Result 35000 states and 143960 transitions. [2020-04-18 06:46:03,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 06:46:03,749 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-04-18 06:46:03,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:46:03,867 INFO L225 Difference]: With dead ends: 35000 [2020-04-18 06:46:03,867 INFO L226 Difference]: Without dead ends: 27272 [2020-04-18 06:46:03,868 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 06:46:04,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27272 states. [2020-04-18 06:46:04,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27272 to 23048. [2020-04-18 06:46:04,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23048 states. [2020-04-18 06:46:04,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23048 states to 23048 states and 95600 transitions. [2020-04-18 06:46:04,740 INFO L78 Accepts]: Start accepts. Automaton has 23048 states and 95600 transitions. Word has length 42 [2020-04-18 06:46:04,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:46:04,741 INFO L479 AbstractCegarLoop]: Abstraction has 23048 states and 95600 transitions. [2020-04-18 06:46:04,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:46:04,741 INFO L276 IsEmpty]: Start isEmpty. Operand 23048 states and 95600 transitions. [2020-04-18 06:46:05,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 06:46:05,025 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:46:05,025 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:46:05,025 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:46:05,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:46:05,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1667841322, now seen corresponding path program 1 times [2020-04-18 06:46:05,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:46:05,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673706644] [2020-04-18 06:46:05,027 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:46:05,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:46:05,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:46:05,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673706644] [2020-04-18 06:46:05,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:46:05,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 06:46:05,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550806520] [2020-04-18 06:46:05,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 06:46:05,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:46:05,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 06:46:05,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-04-18 06:46:05,246 INFO L87 Difference]: Start difference. First operand 23048 states and 95600 transitions. Second operand 8 states. [2020-04-18 06:46:05,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:46:05,677 INFO L93 Difference]: Finished difference Result 38336 states and 157750 transitions. [2020-04-18 06:46:05,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-18 06:46:05,678 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-04-18 06:46:05,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:46:05,799 INFO L225 Difference]: With dead ends: 38336 [2020-04-18 06:46:05,799 INFO L226 Difference]: Without dead ends: 22008 [2020-04-18 06:46:05,800 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-04-18 06:46:05,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22008 states. [2020-04-18 06:46:06,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22008 to 19128. [2020-04-18 06:46:06,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19128 states. [2020-04-18 06:46:06,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19128 states to 19128 states and 79182 transitions. [2020-04-18 06:46:06,451 INFO L78 Accepts]: Start accepts. Automaton has 19128 states and 79182 transitions. Word has length 44 [2020-04-18 06:46:06,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:46:06,452 INFO L479 AbstractCegarLoop]: Abstraction has 19128 states and 79182 transitions. [2020-04-18 06:46:06,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 06:46:06,452 INFO L276 IsEmpty]: Start isEmpty. Operand 19128 states and 79182 transitions. [2020-04-18 06:46:06,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 06:46:06,472 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:46:06,472 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:46:06,473 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:46:06,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:46:06,473 INFO L82 PathProgramCache]: Analyzing trace with hash 324984480, now seen corresponding path program 2 times [2020-04-18 06:46:06,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:46:06,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057824181] [2020-04-18 06:46:06,474 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:46:06,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:46:06,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:46:06,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057824181] [2020-04-18 06:46:06,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:46:06,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:46:06,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904380132] [2020-04-18 06:46:06,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:46:06,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:46:06,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:46:06,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:46:06,613 INFO L87 Difference]: Start difference. First operand 19128 states and 79182 transitions. Second operand 7 states. [2020-04-18 06:46:07,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:46:07,284 INFO L93 Difference]: Finished difference Result 26808 states and 109462 transitions. [2020-04-18 06:46:07,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 06:46:07,284 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 44 [2020-04-18 06:46:07,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:46:07,362 INFO L225 Difference]: With dead ends: 26808 [2020-04-18 06:46:07,363 INFO L226 Difference]: Without dead ends: 21912 [2020-04-18 06:46:07,364 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 06:46:07,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21912 states. [2020-04-18 06:46:07,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21912 to 17688. [2020-04-18 06:46:07,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17688 states. [2020-04-18 06:46:07,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17688 states to 17688 states and 72870 transitions. [2020-04-18 06:46:07,853 INFO L78 Accepts]: Start accepts. Automaton has 17688 states and 72870 transitions. Word has length 44 [2020-04-18 06:46:07,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:46:07,854 INFO L479 AbstractCegarLoop]: Abstraction has 17688 states and 72870 transitions. [2020-04-18 06:46:07,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:46:07,854 INFO L276 IsEmpty]: Start isEmpty. Operand 17688 states and 72870 transitions. [2020-04-18 06:46:07,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 06:46:07,874 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:46:07,874 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:46:07,874 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:46:07,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:46:07,875 INFO L82 PathProgramCache]: Analyzing trace with hash -65157711, now seen corresponding path program 1 times [2020-04-18 06:46:07,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:46:07,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35898201] [2020-04-18 06:46:07,875 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:46:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:46:08,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:46:08,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35898201] [2020-04-18 06:46:08,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:46:08,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:46:08,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240530378] [2020-04-18 06:46:08,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:46:08,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:46:08,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:46:08,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:46:08,015 INFO L87 Difference]: Start difference. First operand 17688 states and 72870 transitions. Second operand 7 states. [2020-04-18 06:46:08,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:46:08,527 INFO L93 Difference]: Finished difference Result 28632 states and 116622 transitions. [2020-04-18 06:46:08,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 06:46:08,528 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2020-04-18 06:46:08,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:46:08,586 INFO L225 Difference]: With dead ends: 28632 [2020-04-18 06:46:08,586 INFO L226 Difference]: Without dead ends: 18456 [2020-04-18 06:46:08,586 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-04-18 06:46:08,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18456 states. [2020-04-18 06:46:08,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18456 to 15576. [2020-04-18 06:46:08,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15576 states. [2020-04-18 06:46:08,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15576 states to 15576 states and 63238 transitions. [2020-04-18 06:46:08,995 INFO L78 Accepts]: Start accepts. Automaton has 15576 states and 63238 transitions. Word has length 45 [2020-04-18 06:46:08,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:46:08,996 INFO L479 AbstractCegarLoop]: Abstraction has 15576 states and 63238 transitions. [2020-04-18 06:46:08,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:46:08,996 INFO L276 IsEmpty]: Start isEmpty. Operand 15576 states and 63238 transitions. [2020-04-18 06:46:09,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 06:46:09,017 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:46:09,018 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:46:09,018 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:46:09,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:46:09,018 INFO L82 PathProgramCache]: Analyzing trace with hash -63664033, now seen corresponding path program 1 times [2020-04-18 06:46:09,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:46:09,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700247805] [2020-04-18 06:46:09,019 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:46:09,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:46:09,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:46:09,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700247805] [2020-04-18 06:46:09,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:46:09,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:46:09,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560585413] [2020-04-18 06:46:09,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:46:09,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:46:09,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:46:09,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:46:09,117 INFO L87 Difference]: Start difference. First operand 15576 states and 63238 transitions. Second operand 7 states. [2020-04-18 06:46:09,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:46:09,423 INFO L93 Difference]: Finished difference Result 22856 states and 91686 transitions. [2020-04-18 06:46:09,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 06:46:09,425 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 46 [2020-04-18 06:46:09,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:46:09,461 INFO L225 Difference]: With dead ends: 22856 [2020-04-18 06:46:09,462 INFO L226 Difference]: Without dead ends: 11336 [2020-04-18 06:46:09,462 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-04-18 06:46:09,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11336 states. [2020-04-18 06:46:09,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11336 to 11336. [2020-04-18 06:46:09,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11336 states. [2020-04-18 06:46:09,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11336 states to 11336 states and 44980 transitions. [2020-04-18 06:46:09,730 INFO L78 Accepts]: Start accepts. Automaton has 11336 states and 44980 transitions. Word has length 46 [2020-04-18 06:46:09,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:46:09,730 INFO L479 AbstractCegarLoop]: Abstraction has 11336 states and 44980 transitions. [2020-04-18 06:46:09,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:46:09,730 INFO L276 IsEmpty]: Start isEmpty. Operand 11336 states and 44980 transitions. [2020-04-18 06:46:09,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 06:46:09,747 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:46:09,747 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:46:09,747 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:46:09,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:46:09,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1394698080, now seen corresponding path program 1 times [2020-04-18 06:46:09,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:46:09,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737885515] [2020-04-18 06:46:09,748 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:46:09,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:46:09,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:46:09,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737885515] [2020-04-18 06:46:09,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:46:09,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 06:46:09,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866339626] [2020-04-18 06:46:09,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 06:46:09,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:46:09,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 06:46:09,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 06:46:09,888 INFO L87 Difference]: Start difference. First operand 11336 states and 44980 transitions. Second operand 6 states. [2020-04-18 06:46:10,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:46:10,198 INFO L93 Difference]: Finished difference Result 15708 states and 61798 transitions. [2020-04-18 06:46:10,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 06:46:10,198 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2020-04-18 06:46:10,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:46:10,225 INFO L225 Difference]: With dead ends: 15708 [2020-04-18 06:46:10,225 INFO L226 Difference]: Without dead ends: 10972 [2020-04-18 06:46:10,225 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 06:46:10,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10972 states. [2020-04-18 06:46:10,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10972 to 10972. [2020-04-18 06:46:10,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10972 states. [2020-04-18 06:46:10,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10972 states to 10972 states and 43330 transitions. [2020-04-18 06:46:10,446 INFO L78 Accepts]: Start accepts. Automaton has 10972 states and 43330 transitions. Word has length 48 [2020-04-18 06:46:10,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:46:10,446 INFO L479 AbstractCegarLoop]: Abstraction has 10972 states and 43330 transitions. [2020-04-18 06:46:10,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 06:46:10,447 INFO L276 IsEmpty]: Start isEmpty. Operand 10972 states and 43330 transitions. [2020-04-18 06:46:10,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 06:46:10,461 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:46:10,462 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:46:10,462 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:46:10,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:46:10,462 INFO L82 PathProgramCache]: Analyzing trace with hash -352681890, now seen corresponding path program 1 times [2020-04-18 06:46:10,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:46:10,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984246391] [2020-04-18 06:46:10,463 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:46:10,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:46:10,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:46:10,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984246391] [2020-04-18 06:46:10,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:46:10,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:46:10,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132441963] [2020-04-18 06:46:10,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:46:10,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:46:10,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:46:10,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:46:10,583 INFO L87 Difference]: Start difference. First operand 10972 states and 43330 transitions. Second operand 7 states. [2020-04-18 06:46:10,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:46:10,776 INFO L93 Difference]: Finished difference Result 13870 states and 53911 transitions. [2020-04-18 06:46:10,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 06:46:10,777 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 49 [2020-04-18 06:46:10,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:46:10,796 INFO L225 Difference]: With dead ends: 13870 [2020-04-18 06:46:10,796 INFO L226 Difference]: Without dead ends: 9406 [2020-04-18 06:46:10,796 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-04-18 06:46:10,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9406 states. [2020-04-18 06:46:10,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9406 to 9406. [2020-04-18 06:46:10,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9406 states. [2020-04-18 06:46:10,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9406 states to 9406 states and 36397 transitions. [2020-04-18 06:46:10,968 INFO L78 Accepts]: Start accepts. Automaton has 9406 states and 36397 transitions. Word has length 49 [2020-04-18 06:46:10,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:46:10,969 INFO L479 AbstractCegarLoop]: Abstraction has 9406 states and 36397 transitions. [2020-04-18 06:46:10,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:46:10,969 INFO L276 IsEmpty]: Start isEmpty. Operand 9406 states and 36397 transitions. [2020-04-18 06:46:10,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-04-18 06:46:10,981 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:46:10,981 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:46:10,981 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:46:10,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:46:10,982 INFO L82 PathProgramCache]: Analyzing trace with hash 969848715, now seen corresponding path program 1 times [2020-04-18 06:46:10,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:46:10,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534503743] [2020-04-18 06:46:10,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:46:10,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:46:11,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:46:11,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534503743] [2020-04-18 06:46:11,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:46:11,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 06:46:11,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539541157] [2020-04-18 06:46:11,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 06:46:11,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:46:11,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 06:46:11,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 06:46:11,120 INFO L87 Difference]: Start difference. First operand 9406 states and 36397 transitions. Second operand 8 states. [2020-04-18 06:46:11,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:46:11,340 INFO L93 Difference]: Finished difference Result 9883 states and 37375 transitions. [2020-04-18 06:46:11,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 06:46:11,341 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2020-04-18 06:46:11,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:46:11,353 INFO L225 Difference]: With dead ends: 9883 [2020-04-18 06:46:11,353 INFO L226 Difference]: Without dead ends: 6499 [2020-04-18 06:46:11,353 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-04-18 06:46:11,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6499 states. [2020-04-18 06:46:11,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6499 to 6499. [2020-04-18 06:46:11,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6499 states. [2020-04-18 06:46:11,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6499 states to 6499 states and 24160 transitions. [2020-04-18 06:46:11,474 INFO L78 Accepts]: Start accepts. Automaton has 6499 states and 24160 transitions. Word has length 50 [2020-04-18 06:46:11,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:46:11,474 INFO L479 AbstractCegarLoop]: Abstraction has 6499 states and 24160 transitions. [2020-04-18 06:46:11,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 06:46:11,474 INFO L276 IsEmpty]: Start isEmpty. Operand 6499 states and 24160 transitions. [2020-04-18 06:46:11,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-04-18 06:46:11,482 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:46:11,482 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:46:11,482 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:46:11,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:46:11,482 INFO L82 PathProgramCache]: Analyzing trace with hash 525596606, now seen corresponding path program 1 times [2020-04-18 06:46:11,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:46:11,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045959681] [2020-04-18 06:46:11,483 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:46:11,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:46:11,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:46:11,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045959681] [2020-04-18 06:46:11,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:46:11,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 06:46:11,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043149302] [2020-04-18 06:46:11,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 06:46:11,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:46:11,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 06:46:11,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-04-18 06:46:11,587 INFO L87 Difference]: Start difference. First operand 6499 states and 24160 transitions. Second operand 8 states. [2020-04-18 06:46:11,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:46:11,775 INFO L93 Difference]: Finished difference Result 9731 states and 36287 transitions. [2020-04-18 06:46:11,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 06:46:11,775 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-04-18 06:46:11,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:46:11,789 INFO L225 Difference]: With dead ends: 9731 [2020-04-18 06:46:11,789 INFO L226 Difference]: Without dead ends: 6237 [2020-04-18 06:46:11,790 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-04-18 06:46:11,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6237 states. [2020-04-18 06:46:11,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6237 to 5589. [2020-04-18 06:46:11,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5589 states. [2020-04-18 06:46:11,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5589 states to 5589 states and 20680 transitions. [2020-04-18 06:46:11,883 INFO L78 Accepts]: Start accepts. Automaton has 5589 states and 20680 transitions. Word has length 52 [2020-04-18 06:46:11,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:46:11,883 INFO L479 AbstractCegarLoop]: Abstraction has 5589 states and 20680 transitions. [2020-04-18 06:46:11,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 06:46:11,883 INFO L276 IsEmpty]: Start isEmpty. Operand 5589 states and 20680 transitions. [2020-04-18 06:46:11,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-04-18 06:46:11,891 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:46:11,891 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:46:11,891 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:46:11,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:46:11,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1408819894, now seen corresponding path program 2 times [2020-04-18 06:46:11,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:46:11,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899499317] [2020-04-18 06:46:11,892 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:46:11,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:46:12,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:46:12,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899499317] [2020-04-18 06:46:12,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:46:12,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-04-18 06:46:12,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882287531] [2020-04-18 06:46:12,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 06:46:12,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:46:12,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 06:46:12,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-04-18 06:46:12,003 INFO L87 Difference]: Start difference. First operand 5589 states and 20680 transitions. Second operand 9 states. [2020-04-18 06:46:12,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:46:12,213 INFO L93 Difference]: Finished difference Result 4671 states and 16846 transitions. [2020-04-18 06:46:12,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-04-18 06:46:12,213 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-04-18 06:46:12,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:46:12,217 INFO L225 Difference]: With dead ends: 4671 [2020-04-18 06:46:12,217 INFO L226 Difference]: Without dead ends: 2371 [2020-04-18 06:46:12,218 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2020-04-18 06:46:12,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2371 states. [2020-04-18 06:46:12,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2371 to 2371. [2020-04-18 06:46:12,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2371 states. [2020-04-18 06:46:12,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2371 states to 2371 states and 8287 transitions. [2020-04-18 06:46:12,248 INFO L78 Accepts]: Start accepts. Automaton has 2371 states and 8287 transitions. Word has length 52 [2020-04-18 06:46:12,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:46:12,248 INFO L479 AbstractCegarLoop]: Abstraction has 2371 states and 8287 transitions. [2020-04-18 06:46:12,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 06:46:12,248 INFO L276 IsEmpty]: Start isEmpty. Operand 2371 states and 8287 transitions. [2020-04-18 06:46:12,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-04-18 06:46:12,251 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:46:12,251 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:46:12,251 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:46:12,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:46:12,252 INFO L82 PathProgramCache]: Analyzing trace with hash -2067083925, now seen corresponding path program 1 times [2020-04-18 06:46:12,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:46:12,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380697922] [2020-04-18 06:46:12,252 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:46:12,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:46:12,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:46:12,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380697922] [2020-04-18 06:46:12,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:46:12,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:46:12,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850045013] [2020-04-18 06:46:12,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:46:12,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:46:12,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:46:12,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:46:12,341 INFO L87 Difference]: Start difference. First operand 2371 states and 8287 transitions. Second operand 7 states. [2020-04-18 06:46:12,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:46:12,422 INFO L93 Difference]: Finished difference Result 2209 states and 7693 transitions. [2020-04-18 06:46:12,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 06:46:12,422 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-04-18 06:46:12,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:46:12,423 INFO L225 Difference]: With dead ends: 2209 [2020-04-18 06:46:12,423 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 06:46:12,423 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-04-18 06:46:12,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 06:46:12,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 06:46:12,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 06:46:12,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 06:46:12,424 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 54 [2020-04-18 06:46:12,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:46:12,425 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 06:46:12,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:46:12,425 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 06:46:12,425 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 06:46:12,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 06:46:12 BasicIcfg [2020-04-18 06:46:12,429 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 06:46:12,431 INFO L168 Benchmark]: Toolchain (without parser) took 22660.99 ms. Allocated memory was 145.8 MB in the beginning and 1.4 GB in the end (delta: 1.3 GB). Free memory was 102.2 MB in the beginning and 843.9 MB in the end (delta: -741.8 MB). Peak memory consumption was 543.8 MB. Max. memory is 7.1 GB. [2020-04-18 06:46:12,432 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 145.8 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. [2020-04-18 06:46:12,433 INFO L168 Benchmark]: CACSL2BoogieTranslator took 787.58 ms. Allocated memory was 145.8 MB in the beginning and 203.9 MB in the end (delta: 58.2 MB). Free memory was 100.1 MB in the beginning and 158.3 MB in the end (delta: -58.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-04-18 06:46:12,434 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.23 ms. Allocated memory is still 203.9 MB. Free memory was 158.3 MB in the beginning and 155.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-04-18 06:46:12,434 INFO L168 Benchmark]: Boogie Preprocessor took 33.48 ms. Allocated memory is still 203.9 MB. Free memory was 155.6 MB in the beginning and 154.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 06:46:12,435 INFO L168 Benchmark]: RCFGBuilder took 487.44 ms. Allocated memory is still 203.9 MB. Free memory was 154.3 MB in the beginning and 130.0 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-04-18 06:46:12,436 INFO L168 Benchmark]: TraceAbstraction took 21272.56 ms. Allocated memory was 203.9 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 130.0 MB in the beginning and 843.9 MB in the end (delta: -714.0 MB). Peak memory consumption was 513.4 MB. Max. memory is 7.1 GB. [2020-04-18 06:46:12,441 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 145.8 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 787.58 ms. Allocated memory was 145.8 MB in the beginning and 203.9 MB in the end (delta: 58.2 MB). Free memory was 100.1 MB in the beginning and 158.3 MB in the end (delta: -58.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 52.23 ms. Allocated memory is still 203.9 MB. Free memory was 158.3 MB in the beginning and 155.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.48 ms. Allocated memory is still 203.9 MB. Free memory was 155.6 MB in the beginning and 154.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 487.44 ms. Allocated memory is still 203.9 MB. Free memory was 154.3 MB in the beginning and 130.0 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 21272.56 ms. Allocated memory was 203.9 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 130.0 MB in the beginning and 843.9 MB in the end (delta: -714.0 MB). Peak memory consumption was 513.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 80 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 21.1s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 8.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.3s, HoareTripleCheckerStatistics: 1358 SDtfs, 2448 SDslu, 4738 SDs, 0 SdLazy, 605 SolverSat, 131 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 162 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47252occurred 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: 4.8s AutomataMinimizationTime, 12 MinimizatonAttempts, 19176 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 566 NumberOfCodeBlocks, 566 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 554 ConstructedInterpolants, 0 QuantifiedInterpolants, 116686 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...