/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 11:10:05,579 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 11:10:05,583 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 11:10:05,648 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 11:10:05,650 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 11:10:05,655 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 11:10:05,659 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 11:10:05,670 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 11:10:05,675 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 11:10:05,684 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 11:10:05,686 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 11:10:05,688 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 11:10:05,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 11:10:05,693 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 11:10:05,695 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 11:10:05,698 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 11:10:05,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 11:10:05,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 11:10:05,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 11:10:05,737 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 11:10:05,740 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 11:10:05,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 11:10:05,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 11:10:05,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 11:10:05,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 11:10:05,757 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 11:10:05,758 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 11:10:05,761 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 11:10:05,762 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 11:10:05,763 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 11:10:05,763 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 11:10:05,764 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 11:10:05,767 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 11:10:05,768 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 11:10:05,769 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 11:10:05,770 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 11:10:05,771 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 11:10:05,771 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 11:10:05,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 11:10:05,773 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 11:10:05,774 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 11:10:05,775 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 11:10:05,845 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 11:10:05,846 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 11:10:05,852 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 11:10:05,852 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 11:10:05,852 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 11:10:05,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 11:10:05,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 11:10:05,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 11:10:05,853 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 11:10:05,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 11:10:05,855 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 11:10:05,856 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 11:10:05,856 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 11:10:05,856 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 11:10:05,857 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 11:10:05,857 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 11:10:05,857 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 11:10:05,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 11:10:05,858 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 11:10:05,858 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 11:10:05,859 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 11:10:05,859 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 11:10:05,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 11:10:05,859 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 11:10:05,860 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 11:10:05,860 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 11:10:06,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 11:10:06,371 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 11:10:06,375 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 11:10:06,377 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 11:10:06,378 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 11:10:06,380 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc.i [2020-12-22 11:10:06,482 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c423d07e/10591b557aa241489cc2aef5d84c0baa/FLAG3822d1bef [2020-12-22 11:10:07,586 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 11:10:07,588 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe019_pso.oepc.i [2020-12-22 11:10:07,616 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c423d07e/10591b557aa241489cc2aef5d84c0baa/FLAG3822d1bef [2020-12-22 11:10:07,723 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c423d07e/10591b557aa241489cc2aef5d84c0baa [2020-12-22 11:10:07,728 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 11:10:07,731 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 11:10:07,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 11:10:07,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 11:10:07,742 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 11:10:07,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:10:07" (1/1) ... [2020-12-22 11:10:07,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d17b30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:10:07, skipping insertion in model container [2020-12-22 11:10:07,746 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:10:07" (1/1) ... [2020-12-22 11:10:07,756 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 11:10:07,842 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 11:10:08,060 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe019_pso.oepc.i[950,963] [2020-12-22 11:10:08,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:10:08,391 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 11:10:08,408 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe019_pso.oepc.i[950,963] [2020-12-22 11:10:08,459 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:10:08,594 INFO L208 MainTranslator]: Completed translation [2020-12-22 11:10:08,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:10:08 WrapperNode [2020-12-22 11:10:08,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 11:10:08,598 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 11:10:08,598 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 11:10:08,598 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 11:10:08,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:10:08" (1/1) ... [2020-12-22 11:10:08,650 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:10:08" (1/1) ... [2020-12-22 11:10:08,678 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 11:10:08,679 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 11:10:08,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 11:10:08,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 11:10:08,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:10:08" (1/1) ... [2020-12-22 11:10:08,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:10:08" (1/1) ... [2020-12-22 11:10:08,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:10:08" (1/1) ... [2020-12-22 11:10:08,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:10:08" (1/1) ... [2020-12-22 11:10:08,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:10:08" (1/1) ... [2020-12-22 11:10:08,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:10:08" (1/1) ... [2020-12-22 11:10:08,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:10:08" (1/1) ... [2020-12-22 11:10:08,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 11:10:08,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 11:10:08,715 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 11:10:08,715 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 11:10:08,716 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:10:08" (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 [2020-12-22 11:10:08,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 11:10:08,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-22 11:10:08,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 11:10:08,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 11:10:08,832 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-22 11:10:08,832 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-22 11:10:08,832 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-22 11:10:08,833 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-22 11:10:08,833 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-22 11:10:08,833 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-22 11:10:08,833 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-12-22 11:10:08,833 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-12-22 11:10:08,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 11:10:08,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-22 11:10:08,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 11:10:08,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 11:10:08,837 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-22 11:10:09,414 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 11:10:09,415 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-22 11:10:09,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:10:09 BoogieIcfgContainer [2020-12-22 11:10:09,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 11:10:09,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 11:10:09,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 11:10:09,426 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 11:10:09,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:10:07" (1/3) ... [2020-12-22 11:10:09,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e4d09ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:10:09, skipping insertion in model container [2020-12-22 11:10:09,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:10:08" (2/3) ... [2020-12-22 11:10:09,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e4d09ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:10:09, skipping insertion in model container [2020-12-22 11:10:09,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:10:09" (3/3) ... [2020-12-22 11:10:09,432 INFO L111 eAbstractionObserver]: Analyzing ICFG safe019_pso.oepc.i [2020-12-22 11:10:09,442 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-22 11:10:09,443 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 11:10:09,451 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 11:10:09,453 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-22 11:10:09,517 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,518 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,518 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,519 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,519 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,520 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,520 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,520 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,521 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,522 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,522 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,522 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,523 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,523 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,524 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,524 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,524 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,524 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,525 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,525 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,534 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,534 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,535 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,536 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,538 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,538 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,540 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,541 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,542 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,543 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,543 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,543 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,544 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,545 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,546 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,548 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,549 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,549 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,549 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,551 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,551 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,552 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,554 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,554 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,555 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,555 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,555 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,556 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,560 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,561 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,561 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,563 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,572 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,573 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,573 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,573 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,585 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,586 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,586 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,586 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,600 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,601 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,601 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,601 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:10:09,609 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-22 11:10:09,640 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 11:10:09,694 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 11:10:09,694 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 11:10:09,695 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 11:10:09,695 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 11:10:09,695 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 11:10:09,696 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 11:10:09,696 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 11:10:09,696 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 11:10:09,721 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-22 11:10:09,725 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 86 transitions, 192 flow [2020-12-22 11:10:09,731 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 86 transitions, 192 flow [2020-12-22 11:10:09,734 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-12-22 11:10:09,860 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-12-22 11:10:09,861 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-22 11:10:09,881 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2020-12-22 11:10:09,889 INFO L116 LiptonReduction]: Number of co-enabled transitions 1866 [2020-12-22 11:10:13,489 WARN L197 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-22 11:10:13,613 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-22 11:10:13,839 WARN L197 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-22 11:10:13,941 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-22 11:10:14,261 INFO L131 LiptonReduction]: Checked pairs total: 2978 [2020-12-22 11:10:14,262 INFO L133 LiptonReduction]: Total number of compositions: 68 [2020-12-22 11:10:14,271 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 25 transitions, 70 flow [2020-12-22 11:10:14,337 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 706 states. [2020-12-22 11:10:14,339 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2020-12-22 11:10:14,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 11:10:14,352 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:10:14,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:10:14,354 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:10:14,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:10:14,363 INFO L82 PathProgramCache]: Analyzing trace with hash -36259415, now seen corresponding path program 1 times [2020-12-22 11:10:14,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:10:14,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299756963] [2020-12-22 11:10:14,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:10:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:10:14,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:10:14,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299756963] [2020-12-22 11:10:14,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:10:14,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-22 11:10:14,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508233321] [2020-12-22 11:10:14,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 11:10:14,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:10:14,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 11:10:14,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 11:10:14,804 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 3 states. [2020-12-22 11:10:14,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:10:14,923 INFO L93 Difference]: Finished difference Result 670 states and 2295 transitions. [2020-12-22 11:10:14,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 11:10:14,925 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-22 11:10:14,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:10:14,969 INFO L225 Difference]: With dead ends: 670 [2020-12-22 11:10:14,970 INFO L226 Difference]: Without dead ends: 526 [2020-12-22 11:10:14,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 11:10:15,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-12-22 11:10:15,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2020-12-22 11:10:15,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2020-12-22 11:10:15,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 1743 transitions. [2020-12-22 11:10:15,137 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 1743 transitions. Word has length 10 [2020-12-22 11:10:15,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:10:15,138 INFO L481 AbstractCegarLoop]: Abstraction has 526 states and 1743 transitions. [2020-12-22 11:10:15,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 11:10:15,138 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1743 transitions. [2020-12-22 11:10:15,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 11:10:15,142 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:10:15,142 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:10:15,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 11:10:15,143 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:10:15,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:10:15,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1165014530, now seen corresponding path program 1 times [2020-12-22 11:10:15,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:10:15,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458775897] [2020-12-22 11:10:15,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:10:15,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:10:15,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:10:15,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458775897] [2020-12-22 11:10:15,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:10:15,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:10:15,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566158239] [2020-12-22 11:10:15,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:10:15,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:10:15,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:10:15,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:10:15,340 INFO L87 Difference]: Start difference. First operand 526 states and 1743 transitions. Second operand 4 states. [2020-12-22 11:10:15,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:10:15,399 INFO L93 Difference]: Finished difference Result 724 states and 2331 transitions. [2020-12-22 11:10:15,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 11:10:15,400 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-22 11:10:15,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:10:15,408 INFO L225 Difference]: With dead ends: 724 [2020-12-22 11:10:15,409 INFO L226 Difference]: Without dead ends: 412 [2020-12-22 11:10:15,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:10:15,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-12-22 11:10:15,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2020-12-22 11:10:15,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-12-22 11:10:15,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 1323 transitions. [2020-12-22 11:10:15,472 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 1323 transitions. Word has length 11 [2020-12-22 11:10:15,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:10:15,472 INFO L481 AbstractCegarLoop]: Abstraction has 412 states and 1323 transitions. [2020-12-22 11:10:15,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:10:15,473 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 1323 transitions. [2020-12-22 11:10:15,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 11:10:15,478 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:10:15,478 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:10:15,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 11:10:15,479 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:10:15,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:10:15,479 INFO L82 PathProgramCache]: Analyzing trace with hash -485610361, now seen corresponding path program 1 times [2020-12-22 11:10:15,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:10:15,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773810677] [2020-12-22 11:10:15,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:10:15,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:10:15,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:10:15,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773810677] [2020-12-22 11:10:15,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:10:15,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-22 11:10:15,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662339704] [2020-12-22 11:10:15,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 11:10:15,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:10:15,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 11:10:15,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 11:10:15,603 INFO L87 Difference]: Start difference. First operand 412 states and 1323 transitions. Second operand 3 states. [2020-12-22 11:10:15,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:10:15,615 INFO L93 Difference]: Finished difference Result 394 states and 1254 transitions. [2020-12-22 11:10:15,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 11:10:15,616 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-12-22 11:10:15,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:10:15,620 INFO L225 Difference]: With dead ends: 394 [2020-12-22 11:10:15,621 INFO L226 Difference]: Without dead ends: 394 [2020-12-22 11:10:15,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 11:10:15,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-12-22 11:10:15,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2020-12-22 11:10:15,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-12-22 11:10:15,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1254 transitions. [2020-12-22 11:10:15,645 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1254 transitions. Word has length 12 [2020-12-22 11:10:15,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:10:15,645 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 1254 transitions. [2020-12-22 11:10:15,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 11:10:15,645 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1254 transitions. [2020-12-22 11:10:15,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 11:10:15,648 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:10:15,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:10:15,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 11:10:15,649 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:10:15,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:10:15,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1949399229, now seen corresponding path program 1 times [2020-12-22 11:10:15,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:10:15,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868627576] [2020-12-22 11:10:15,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:10:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:10:15,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:10:15,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868627576] [2020-12-22 11:10:15,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:10:15,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:10:15,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449824401] [2020-12-22 11:10:15,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:10:15,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:10:15,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:10:15,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:10:15,721 INFO L87 Difference]: Start difference. First operand 394 states and 1254 transitions. Second operand 4 states. [2020-12-22 11:10:15,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:10:15,761 INFO L93 Difference]: Finished difference Result 508 states and 1549 transitions. [2020-12-22 11:10:15,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 11:10:15,762 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-22 11:10:15,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:10:15,771 INFO L225 Difference]: With dead ends: 508 [2020-12-22 11:10:15,771 INFO L226 Difference]: Without dead ends: 412 [2020-12-22 11:10:15,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:10:15,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-12-22 11:10:15,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 376. [2020-12-22 11:10:15,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-12-22 11:10:15,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1137 transitions. [2020-12-22 11:10:15,799 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1137 transitions. Word has length 13 [2020-12-22 11:10:15,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:10:15,801 INFO L481 AbstractCegarLoop]: Abstraction has 376 states and 1137 transitions. [2020-12-22 11:10:15,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:10:15,802 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1137 transitions. [2020-12-22 11:10:15,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 11:10:15,806 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:10:15,807 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:10:15,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 11:10:15,807 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:10:15,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:10:15,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1949381931, now seen corresponding path program 1 times [2020-12-22 11:10:15,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:10:15,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353285814] [2020-12-22 11:10:15,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:10:15,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:10:15,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:10:15,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353285814] [2020-12-22 11:10:15,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:10:15,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:10:15,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318373529] [2020-12-22 11:10:15,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:10:15,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:10:15,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:10:15,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:10:15,959 INFO L87 Difference]: Start difference. First operand 376 states and 1137 transitions. Second operand 4 states. [2020-12-22 11:10:15,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:10:15,988 INFO L93 Difference]: Finished difference Result 526 states and 1530 transitions. [2020-12-22 11:10:15,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 11:10:15,989 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-22 11:10:15,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:10:15,992 INFO L225 Difference]: With dead ends: 526 [2020-12-22 11:10:15,992 INFO L226 Difference]: Without dead ends: 274 [2020-12-22 11:10:15,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:10:15,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-12-22 11:10:16,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2020-12-22 11:10:16,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-12-22 11:10:16,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 775 transitions. [2020-12-22 11:10:16,008 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 775 transitions. Word has length 13 [2020-12-22 11:10:16,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:10:16,009 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 775 transitions. [2020-12-22 11:10:16,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:10:16,009 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 775 transitions. [2020-12-22 11:10:16,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 11:10:16,010 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:10:16,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:10:16,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 11:10:16,010 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:10:16,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:10:16,011 INFO L82 PathProgramCache]: Analyzing trace with hash 2123867267, now seen corresponding path program 1 times [2020-12-22 11:10:16,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:10:16,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559651594] [2020-12-22 11:10:16,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:10:16,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:10:16,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:10:16,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559651594] [2020-12-22 11:10:16,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:10:16,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:10:16,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842472296] [2020-12-22 11:10:16,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:10:16,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:10:16,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:10:16,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:10:16,135 INFO L87 Difference]: Start difference. First operand 274 states and 775 transitions. Second operand 4 states. [2020-12-22 11:10:16,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:10:16,187 INFO L93 Difference]: Finished difference Result 345 states and 911 transitions. [2020-12-22 11:10:16,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:10:16,189 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-22 11:10:16,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:10:16,191 INFO L225 Difference]: With dead ends: 345 [2020-12-22 11:10:16,192 INFO L226 Difference]: Without dead ends: 252 [2020-12-22 11:10:16,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:10:16,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-12-22 11:10:16,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2020-12-22 11:10:16,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-12-22 11:10:16,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 675 transitions. [2020-12-22 11:10:16,205 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 675 transitions. Word has length 14 [2020-12-22 11:10:16,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:10:16,205 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 675 transitions. [2020-12-22 11:10:16,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:10:16,205 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 675 transitions. [2020-12-22 11:10:16,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 11:10:16,206 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:10:16,206 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:10:16,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 11:10:16,207 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:10:16,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:10:16,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1422134941, now seen corresponding path program 1 times [2020-12-22 11:10:16,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:10:16,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793963101] [2020-12-22 11:10:16,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:10:16,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:10:16,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:10:16,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793963101] [2020-12-22 11:10:16,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:10:16,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:10:16,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570072619] [2020-12-22 11:10:16,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:10:16,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:10:16,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:10:16,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:10:16,282 INFO L87 Difference]: Start difference. First operand 252 states and 675 transitions. Second operand 5 states. [2020-12-22 11:10:16,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:10:16,343 INFO L93 Difference]: Finished difference Result 278 states and 685 transitions. [2020-12-22 11:10:16,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:10:16,344 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-22 11:10:16,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:10:16,346 INFO L225 Difference]: With dead ends: 278 [2020-12-22 11:10:16,347 INFO L226 Difference]: Without dead ends: 203 [2020-12-22 11:10:16,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:10:16,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-12-22 11:10:16,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-12-22 11:10:16,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-12-22 11:10:16,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 492 transitions. [2020-12-22 11:10:16,356 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 492 transitions. Word has length 15 [2020-12-22 11:10:16,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:10:16,357 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 492 transitions. [2020-12-22 11:10:16,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:10:16,357 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 492 transitions. [2020-12-22 11:10:16,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 11:10:16,358 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:10:16,358 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:10:16,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 11:10:16,359 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:10:16,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:10:16,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1099628631, now seen corresponding path program 1 times [2020-12-22 11:10:16,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:10:16,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724830145] [2020-12-22 11:10:16,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:10:16,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:10:16,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:10:16,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724830145] [2020-12-22 11:10:16,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:10:16,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:10:16,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845436444] [2020-12-22 11:10:16,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 11:10:16,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:10:16,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 11:10:16,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:10:16,438 INFO L87 Difference]: Start difference. First operand 203 states and 492 transitions. Second operand 6 states. [2020-12-22 11:10:16,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:10:16,524 INFO L93 Difference]: Finished difference Result 200 states and 461 transitions. [2020-12-22 11:10:16,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:10:16,525 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-22 11:10:16,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:10:16,527 INFO L225 Difference]: With dead ends: 200 [2020-12-22 11:10:16,527 INFO L226 Difference]: Without dead ends: 162 [2020-12-22 11:10:16,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:10:16,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-12-22 11:10:16,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-12-22 11:10:16,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-12-22 11:10:16,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 375 transitions. [2020-12-22 11:10:16,538 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 375 transitions. Word has length 16 [2020-12-22 11:10:16,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:10:16,538 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 375 transitions. [2020-12-22 11:10:16,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 11:10:16,539 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 375 transitions. [2020-12-22 11:10:16,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 11:10:16,540 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:10:16,540 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:10:16,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 11:10:16,541 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:10:16,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:10:16,542 INFO L82 PathProgramCache]: Analyzing trace with hash 554738786, now seen corresponding path program 1 times [2020-12-22 11:10:16,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:10:16,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728689733] [2020-12-22 11:10:16,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:10:16,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:10:16,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:10:16,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728689733] [2020-12-22 11:10:16,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:10:16,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:10:16,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722975039] [2020-12-22 11:10:16,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:10:16,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:10:16,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:10:16,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:10:16,660 INFO L87 Difference]: Start difference. First operand 162 states and 375 transitions. Second operand 5 states. [2020-12-22 11:10:16,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:10:16,692 INFO L93 Difference]: Finished difference Result 194 states and 439 transitions. [2020-12-22 11:10:16,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:10:16,692 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-22 11:10:16,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:10:16,694 INFO L225 Difference]: With dead ends: 194 [2020-12-22 11:10:16,694 INFO L226 Difference]: Without dead ends: 127 [2020-12-22 11:10:16,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:10:16,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-12-22 11:10:16,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2020-12-22 11:10:16,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-12-22 11:10:16,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 265 transitions. [2020-12-22 11:10:16,701 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 265 transitions. Word has length 18 [2020-12-22 11:10:16,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:10:16,701 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 265 transitions. [2020-12-22 11:10:16,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:10:16,702 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 265 transitions. [2020-12-22 11:10:16,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 11:10:16,702 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:10:16,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:10:16,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 11:10:16,703 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:10:16,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:10:16,703 INFO L82 PathProgramCache]: Analyzing trace with hash -780782352, now seen corresponding path program 2 times [2020-12-22 11:10:16,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:10:16,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021946547] [2020-12-22 11:10:16,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:10:16,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:10:16,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:10:16,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021946547] [2020-12-22 11:10:16,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:10:16,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 11:10:16,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790999954] [2020-12-22 11:10:16,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 11:10:16,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:10:16,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 11:10:16,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:10:16,791 INFO L87 Difference]: Start difference. First operand 125 states and 265 transitions. Second operand 7 states. [2020-12-22 11:10:16,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:10:16,876 INFO L93 Difference]: Finished difference Result 120 states and 253 transitions. [2020-12-22 11:10:16,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 11:10:16,877 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-22 11:10:16,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:10:16,878 INFO L225 Difference]: With dead ends: 120 [2020-12-22 11:10:16,878 INFO L226 Difference]: Without dead ends: 71 [2020-12-22 11:10:16,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-22 11:10:16,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-12-22 11:10:16,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-12-22 11:10:16,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-12-22 11:10:16,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 143 transitions. [2020-12-22 11:10:16,883 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 143 transitions. Word has length 18 [2020-12-22 11:10:16,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:10:16,883 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 143 transitions. [2020-12-22 11:10:16,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 11:10:16,884 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 143 transitions. [2020-12-22 11:10:16,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 11:10:16,884 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:10:16,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:10:16,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 11:10:16,885 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:10:16,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:10:16,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1285342776, now seen corresponding path program 1 times [2020-12-22 11:10:16,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:10:16,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166047459] [2020-12-22 11:10:16,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:10:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:10:16,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:10:16,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166047459] [2020-12-22 11:10:16,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:10:16,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:10:16,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912455574] [2020-12-22 11:10:16,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:10:16,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:10:16,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:10:16,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:10:16,949 INFO L87 Difference]: Start difference. First operand 71 states and 143 transitions. Second operand 4 states. [2020-12-22 11:10:16,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:10:16,974 INFO L93 Difference]: Finished difference Result 70 states and 142 transitions. [2020-12-22 11:10:16,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:10:16,974 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-12-22 11:10:16,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:10:16,975 INFO L225 Difference]: With dead ends: 70 [2020-12-22 11:10:16,975 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 11:10:16,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:10:16,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 11:10:16,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 11:10:16,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 11:10:16,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 11:10:16,976 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-12-22 11:10:16,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:10:16,977 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 11:10:16,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:10:16,977 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 11:10:16,977 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 11:10:16,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 11:10:16,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 11:10:16 BasicIcfg [2020-12-22 11:10:16,982 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 11:10:16,983 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 11:10:16,983 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 11:10:16,983 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 11:10:16,984 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:10:09" (3/4) ... [2020-12-22 11:10:16,989 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 11:10:16,999 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-22 11:10:16,999 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-22 11:10:16,999 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-22 11:10:17,000 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2020-12-22 11:10:17,007 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2020-12-22 11:10:17,007 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 11:10:17,007 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 11:10:17,008 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 11:10:17,058 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe019_pso.oepc.i-witness.graphml [2020-12-22 11:10:17,058 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 11:10:17,060 INFO L168 Benchmark]: Toolchain (without parser) took 9328.89 ms. Allocated memory was 152.0 MB in the beginning and 225.4 MB in the end (delta: 73.4 MB). Free memory was 126.8 MB in the beginning and 140.9 MB in the end (delta: -14.1 MB). Peak memory consumption was 59.4 MB. Max. memory is 8.0 GB. [2020-12-22 11:10:17,061 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 152.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 11:10:17,061 INFO L168 Benchmark]: CACSL2BoogieTranslator took 858.62 ms. Allocated memory is still 152.0 MB. Free memory was 126.6 MB in the beginning and 126.7 MB in the end (delta: -99.9 kB). Peak memory consumption was 26.9 MB. Max. memory is 8.0 GB. [2020-12-22 11:10:17,062 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.46 ms. Allocated memory is still 152.0 MB. Free memory was 126.2 MB in the beginning and 124.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:10:17,062 INFO L168 Benchmark]: Boogie Preprocessor took 34.41 ms. Allocated memory is still 152.0 MB. Free memory was 124.6 MB in the beginning and 123.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 11:10:17,063 INFO L168 Benchmark]: RCFGBuilder took 704.78 ms. Allocated memory is still 152.0 MB. Free memory was 123.1 MB in the beginning and 99.0 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:10:17,063 INFO L168 Benchmark]: TraceAbstraction took 7561.29 ms. Allocated memory was 152.0 MB in the beginning and 225.4 MB in the end (delta: 73.4 MB). Free memory was 98.5 MB in the beginning and 143.5 MB in the end (delta: -45.1 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. [2020-12-22 11:10:17,064 INFO L168 Benchmark]: Witness Printer took 75.27 ms. Allocated memory is still 225.4 MB. Free memory was 143.5 MB in the beginning and 140.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:10:17,068 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 152.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 858.62 ms. Allocated memory is still 152.0 MB. Free memory was 126.6 MB in the beginning and 126.7 MB in the end (delta: -99.9 kB). Peak memory consumption was 26.9 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 80.46 ms. Allocated memory is still 152.0 MB. Free memory was 126.2 MB in the beginning and 124.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.41 ms. Allocated memory is still 152.0 MB. Free memory was 124.6 MB in the beginning and 123.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 704.78 ms. Allocated memory is still 152.0 MB. Free memory was 123.1 MB in the beginning and 99.0 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7561.29 ms. Allocated memory was 152.0 MB in the beginning and 225.4 MB in the end (delta: 73.4 MB). Free memory was 98.5 MB in the beginning and 143.5 MB in the end (delta: -45.1 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. * Witness Printer took 75.27 ms. Allocated memory is still 225.4 MB. Free memory was 143.5 MB in the beginning and 140.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1172 VarBasedMoverChecksPositive, 55 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 38 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.7s, 75 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.5s, 97 PlacesBefore, 38 PlacesAfterwards, 86 TransitionsBefore, 25 TransitionsAfterwards, 1866 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 2 ChoiceCompositions, 68 TotalNumberOfCompositions, 2978 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.2s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.6s, HoareTripleCheckerStatistics: 238 SDtfs, 264 SDslu, 342 SDs, 0 SdLazy, 205 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=706occurred 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: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 38 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 160 NumberOfCodeBlocks, 160 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 149 ConstructedInterpolants, 0 QuantifiedInterpolants, 7617 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...