/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/safe032_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 11:13:37,318 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 11:13:37,322 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 11:13:37,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 11:13:37,381 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 11:13:37,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 11:13:37,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 11:13:37,395 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 11:13:37,397 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 11:13:37,399 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 11:13:37,400 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 11:13:37,402 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 11:13:37,402 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 11:13:37,404 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 11:13:37,405 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 11:13:37,407 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 11:13:37,408 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 11:13:37,410 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 11:13:37,412 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 11:13:37,415 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 11:13:37,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 11:13:37,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 11:13:37,420 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 11:13:37,421 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 11:13:37,443 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 11:13:37,444 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 11:13:37,444 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 11:13:37,445 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 11:13:37,446 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 11:13:37,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 11:13:37,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 11:13:37,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 11:13:37,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 11:13:37,451 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 11:13:37,453 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 11:13:37,453 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 11:13:37,454 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 11:13:37,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 11:13:37,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 11:13:37,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 11:13:37,456 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 11:13:37,458 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 11:13:37,484 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 11:13:37,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 11:13:37,486 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 11:13:37,487 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 11:13:37,487 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 11:13:37,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 11:13:37,487 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 11:13:37,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 11:13:37,488 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 11:13:37,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 11:13:37,488 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 11:13:37,488 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 11:13:37,489 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 11:13:37,489 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 11:13:37,489 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 11:13:37,489 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 11:13:37,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 11:13:37,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 11:13:37,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 11:13:37,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 11:13:37,490 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 11:13:37,490 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 11:13:37,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 11:13:37,491 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 11:13:37,491 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 11:13:37,491 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 11:13:37,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 11:13:37,896 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 11:13:37,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 11:13:37,901 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 11:13:37,902 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 11:13:37,903 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe032_tso.oepc.i [2020-12-22 11:13:37,983 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d25958bc5/46481b5f86a04dc8b17baf0dc8eb1258/FLAG4bf202f0e [2020-12-22 11:13:38,732 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 11:13:38,733 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe032_tso.oepc.i [2020-12-22 11:13:38,752 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d25958bc5/46481b5f86a04dc8b17baf0dc8eb1258/FLAG4bf202f0e [2020-12-22 11:13:39,014 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d25958bc5/46481b5f86a04dc8b17baf0dc8eb1258 [2020-12-22 11:13:39,019 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 11:13:39,023 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 11:13:39,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 11:13:39,026 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 11:13:39,031 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 11:13:39,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:13:39" (1/1) ... [2020-12-22 11:13:39,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d926e7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:13:39, skipping insertion in model container [2020-12-22 11:13:39,035 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:13:39" (1/1) ... [2020-12-22 11:13:39,045 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 11:13:39,121 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 11:13:39,403 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/safe032_tso.oepc.i[950,963] [2020-12-22 11:13:39,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:13:39,700 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 11:13:39,716 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/safe032_tso.oepc.i[950,963] [2020-12-22 11:13:39,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:13:39,866 INFO L208 MainTranslator]: Completed translation [2020-12-22 11:13:39,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:13:39 WrapperNode [2020-12-22 11:13:39,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 11:13:39,868 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 11:13:39,869 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 11:13:39,869 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 11:13:39,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:13:39" (1/1) ... [2020-12-22 11:13:39,923 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:13:39" (1/1) ... [2020-12-22 11:13:39,961 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 11:13:39,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 11:13:39,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 11:13:39,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 11:13:39,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:13:39" (1/1) ... [2020-12-22 11:13:39,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:13:39" (1/1) ... [2020-12-22 11:13:39,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:13:39" (1/1) ... [2020-12-22 11:13:39,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:13:39" (1/1) ... [2020-12-22 11:13:40,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:13:39" (1/1) ... [2020-12-22 11:13:40,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:13:39" (1/1) ... [2020-12-22 11:13:40,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:13:39" (1/1) ... [2020-12-22 11:13:40,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 11:13:40,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 11:13:40,031 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 11:13:40,034 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 11:13:40,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:13:39" (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 11:13:40,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 11:13:40,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-22 11:13:40,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 11:13:40,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 11:13:40,154 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-22 11:13:40,154 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-22 11:13:40,154 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-22 11:13:40,155 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-22 11:13:40,155 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-22 11:13:40,156 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-22 11:13:40,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 11:13:40,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-22 11:13:40,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 11:13:40,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 11:13:40,159 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 11:13:40,676 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 11:13:40,677 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-22 11:13:40,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:13:40 BoogieIcfgContainer [2020-12-22 11:13:40,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 11:13:40,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 11:13:40,681 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 11:13:40,685 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 11:13:40,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:13:39" (1/3) ... [2020-12-22 11:13:40,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b47bb49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:13:40, skipping insertion in model container [2020-12-22 11:13:40,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:13:39" (2/3) ... [2020-12-22 11:13:40,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b47bb49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:13:40, skipping insertion in model container [2020-12-22 11:13:40,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:13:40" (3/3) ... [2020-12-22 11:13:40,689 INFO L111 eAbstractionObserver]: Analyzing ICFG safe032_tso.oepc.i [2020-12-22 11:13:40,696 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-22 11:13:40,697 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 11:13:40,702 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 11:13:40,703 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-22 11:13:40,734 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,735 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,735 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,735 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,735 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,736 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,736 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,736 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,736 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,737 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,737 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,737 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,737 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,738 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,738 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,738 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,738 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,738 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,739 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,739 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,739 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,739 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,740 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,740 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,740 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,741 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,741 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,741 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,741 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,741 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,741 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,742 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,742 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,742 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,743 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,743 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,745 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,746 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,746 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,746 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,751 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,752 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,752 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,752 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,754 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,755 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,755 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,755 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:40,757 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-22 11:13:40,777 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-22 11:13:40,802 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 11:13:40,802 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 11:13:40,802 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 11:13:40,802 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 11:13:40,803 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 11:13:40,803 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 11:13:40,803 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 11:13:40,803 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 11:13:40,817 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-22 11:13:40,820 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 74 transitions, 163 flow [2020-12-22 11:13:40,823 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 74 transitions, 163 flow [2020-12-22 11:13:40,826 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2020-12-22 11:13:40,877 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2020-12-22 11:13:40,878 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-22 11:13:40,882 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-22 11:13:40,886 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-22 11:13:43,772 WARN L197 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-22 11:13:43,877 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-12-22 11:13:44,092 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-22 11:13:44,250 INFO L131 LiptonReduction]: Checked pairs total: 2571 [2020-12-22 11:13:44,250 INFO L133 LiptonReduction]: Total number of compositions: 60 [2020-12-22 11:13:44,258 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-12-22 11:13:44,287 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-12-22 11:13:44,290 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-12-22 11:13:44,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 11:13:44,297 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:13:44,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:13:44,298 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:13:44,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:13:44,305 INFO L82 PathProgramCache]: Analyzing trace with hash 421261709, now seen corresponding path program 1 times [2020-12-22 11:13:44,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:13:44,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279482362] [2020-12-22 11:13:44,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:13:44,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:13:44,497 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 11:13:44,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279482362] [2020-12-22 11:13:44,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:13:44,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:13:44,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187149889] [2020-12-22 11:13:44,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 11:13:44,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:13:44,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 11:13:44,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 11:13:44,523 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-12-22 11:13:44,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:13:44,560 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-12-22 11:13:44,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 11:13:44,561 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-22 11:13:44,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:13:44,579 INFO L225 Difference]: With dead ends: 362 [2020-12-22 11:13:44,579 INFO L226 Difference]: Without dead ends: 298 [2020-12-22 11:13:44,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 11:13:44,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-22 11:13:44,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-12-22 11:13:44,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-22 11:13:44,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-12-22 11:13:44,659 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-12-22 11:13:44,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:13:44,660 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-12-22 11:13:44,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 11:13:44,660 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-12-22 11:13:44,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 11:13:44,662 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:13:44,662 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:13:44,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 11:13:44,662 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:13:44,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:13:44,663 INFO L82 PathProgramCache]: Analyzing trace with hash 174206349, now seen corresponding path program 1 times [2020-12-22 11:13:44,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:13:44,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922745022] [2020-12-22 11:13:44,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:13:44,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:13:44,907 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 11:13:44,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922745022] [2020-12-22 11:13:44,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:13:44,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:13:44,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127898483] [2020-12-22 11:13:44,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:13:44,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:13:44,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:13:44,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:13:44,914 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-12-22 11:13:45,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:13:45,025 INFO L93 Difference]: Finished difference Result 485 states and 1373 transitions. [2020-12-22 11:13:45,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:13:45,026 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-22 11:13:45,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:13:45,033 INFO L225 Difference]: With dead ends: 485 [2020-12-22 11:13:45,033 INFO L226 Difference]: Without dead ends: 326 [2020-12-22 11:13:45,034 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 11:13:45,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-12-22 11:13:45,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 276. [2020-12-22 11:13:45,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-12-22 11:13:45,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 716 transitions. [2020-12-22 11:13:45,089 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 716 transitions. Word has length 9 [2020-12-22 11:13:45,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:13:45,089 INFO L481 AbstractCegarLoop]: Abstraction has 276 states and 716 transitions. [2020-12-22 11:13:45,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:13:45,089 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 716 transitions. [2020-12-22 11:13:45,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 11:13:45,091 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:13:45,091 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:13:45,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 11:13:45,093 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:13:45,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:13:45,094 INFO L82 PathProgramCache]: Analyzing trace with hash 403113335, now seen corresponding path program 1 times [2020-12-22 11:13:45,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:13:45,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686500038] [2020-12-22 11:13:45,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:13:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:13:45,186 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 11:13:45,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686500038] [2020-12-22 11:13:45,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:13:45,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:13:45,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581823514] [2020-12-22 11:13:45,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:13:45,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:13:45,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:13:45,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:13:45,189 INFO L87 Difference]: Start difference. First operand 276 states and 716 transitions. Second operand 5 states. [2020-12-22 11:13:45,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:13:45,242 INFO L93 Difference]: Finished difference Result 302 states and 732 transitions. [2020-12-22 11:13:45,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:13:45,243 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-22 11:13:45,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:13:45,245 INFO L225 Difference]: With dead ends: 302 [2020-12-22 11:13:45,245 INFO L226 Difference]: Without dead ends: 212 [2020-12-22 11:13:45,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:13:45,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-12-22 11:13:45,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 190. [2020-12-22 11:13:45,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-12-22 11:13:45,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 462 transitions. [2020-12-22 11:13:45,254 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 462 transitions. Word has length 10 [2020-12-22 11:13:45,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:13:45,254 INFO L481 AbstractCegarLoop]: Abstraction has 190 states and 462 transitions. [2020-12-22 11:13:45,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:13:45,254 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 462 transitions. [2020-12-22 11:13:45,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 11:13:45,256 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:13:45,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:13:45,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 11:13:45,257 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:13:45,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:13:45,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1450144045, now seen corresponding path program 1 times [2020-12-22 11:13:45,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:13:45,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914813055] [2020-12-22 11:13:45,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:13:45,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:13:45,371 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 11:13:45,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914813055] [2020-12-22 11:13:45,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:13:45,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:13:45,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067579543] [2020-12-22 11:13:45,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:13:45,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:13:45,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:13:45,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:13:45,377 INFO L87 Difference]: Start difference. First operand 190 states and 462 transitions. Second operand 5 states. [2020-12-22 11:13:45,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:13:45,445 INFO L93 Difference]: Finished difference Result 226 states and 535 transitions. [2020-12-22 11:13:45,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:13:45,446 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-22 11:13:45,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:13:45,448 INFO L225 Difference]: With dead ends: 226 [2020-12-22 11:13:45,448 INFO L226 Difference]: Without dead ends: 198 [2020-12-22 11:13:45,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:13:45,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-12-22 11:13:45,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 174. [2020-12-22 11:13:45,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-12-22 11:13:45,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 416 transitions. [2020-12-22 11:13:45,456 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 416 transitions. Word has length 12 [2020-12-22 11:13:45,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:13:45,456 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 416 transitions. [2020-12-22 11:13:45,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:13:45,456 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 416 transitions. [2020-12-22 11:13:45,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 11:13:45,458 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:13:45,458 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:13:45,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 11:13:45,458 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:13:45,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:13:45,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1450133474, now seen corresponding path program 1 times [2020-12-22 11:13:45,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:13:45,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99696566] [2020-12-22 11:13:45,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:13:45,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:13:45,547 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 11:13:45,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99696566] [2020-12-22 11:13:45,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:13:45,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:13:45,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786447231] [2020-12-22 11:13:45,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:13:45,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:13:45,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:13:45,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:13:45,552 INFO L87 Difference]: Start difference. First operand 174 states and 416 transitions. Second operand 5 states. [2020-12-22 11:13:45,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:13:45,622 INFO L93 Difference]: Finished difference Result 258 states and 590 transitions. [2020-12-22 11:13:45,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:13:45,623 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-22 11:13:45,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:13:45,625 INFO L225 Difference]: With dead ends: 258 [2020-12-22 11:13:45,625 INFO L226 Difference]: Without dead ends: 176 [2020-12-22 11:13:45,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:13:45,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-12-22 11:13:45,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 148. [2020-12-22 11:13:45,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-12-22 11:13:45,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 345 transitions. [2020-12-22 11:13:45,631 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 345 transitions. Word has length 12 [2020-12-22 11:13:45,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:13:45,632 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 345 transitions. [2020-12-22 11:13:45,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:13:45,632 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 345 transitions. [2020-12-22 11:13:45,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 11:13:45,633 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:13:45,633 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:13:45,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 11:13:45,634 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:13:45,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:13:45,634 INFO L82 PathProgramCache]: Analyzing trace with hash 410097923, now seen corresponding path program 1 times [2020-12-22 11:13:45,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:13:45,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753212007] [2020-12-22 11:13:45,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:13:45,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:13:45,706 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 11:13:45,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753212007] [2020-12-22 11:13:45,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:13:45,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:13:45,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577805913] [2020-12-22 11:13:45,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:13:45,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:13:45,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:13:45,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:13:45,710 INFO L87 Difference]: Start difference. First operand 148 states and 345 transitions. Second operand 4 states. [2020-12-22 11:13:45,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:13:45,744 INFO L93 Difference]: Finished difference Result 159 states and 337 transitions. [2020-12-22 11:13:45,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:13:45,745 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-22 11:13:45,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:13:45,746 INFO L225 Difference]: With dead ends: 159 [2020-12-22 11:13:45,746 INFO L226 Difference]: Without dead ends: 124 [2020-12-22 11:13:45,747 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 11:13:45,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-12-22 11:13:45,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-12-22 11:13:45,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-12-22 11:13:45,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 261 transitions. [2020-12-22 11:13:45,751 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 261 transitions. Word has length 13 [2020-12-22 11:13:45,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:13:45,751 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 261 transitions. [2020-12-22 11:13:45,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:13:45,752 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 261 transitions. [2020-12-22 11:13:45,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 11:13:45,753 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:13:45,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:13:45,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 11:13:45,754 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:13:45,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:13:45,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1383768558, now seen corresponding path program 1 times [2020-12-22 11:13:45,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:13:45,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096737952] [2020-12-22 11:13:45,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:13:45,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:13:45,862 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 11:13:45,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096737952] [2020-12-22 11:13:45,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:13:45,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:13:45,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880413291] [2020-12-22 11:13:45,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:13:45,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:13:45,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:13:45,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:13:45,864 INFO L87 Difference]: Start difference. First operand 124 states and 261 transitions. Second operand 5 states. [2020-12-22 11:13:45,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:13:45,902 INFO L93 Difference]: Finished difference Result 110 states and 215 transitions. [2020-12-22 11:13:45,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:13:45,903 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-22 11:13:45,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:13:45,904 INFO L225 Difference]: With dead ends: 110 [2020-12-22 11:13:45,904 INFO L226 Difference]: Without dead ends: 89 [2020-12-22 11:13:45,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:13:45,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-22 11:13:45,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-12-22 11:13:45,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-12-22 11:13:45,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 172 transitions. [2020-12-22 11:13:45,908 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 172 transitions. Word has length 14 [2020-12-22 11:13:45,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:13:45,908 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 172 transitions. [2020-12-22 11:13:45,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:13:45,908 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 172 transitions. [2020-12-22 11:13:45,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 11:13:45,909 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:13:45,909 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:13:45,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 11:13:45,910 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:13:45,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:13:45,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1798861421, now seen corresponding path program 1 times [2020-12-22 11:13:45,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:13:45,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254220379] [2020-12-22 11:13:45,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:13:45,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:13:45,966 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 11:13:45,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254220379] [2020-12-22 11:13:45,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:13:45,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 11:13:45,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139336030] [2020-12-22 11:13:45,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 11:13:45,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:13:45,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 11:13:45,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:13:45,969 INFO L87 Difference]: Start difference. First operand 89 states and 172 transitions. Second operand 6 states. [2020-12-22 11:13:45,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:13:45,995 INFO L93 Difference]: Finished difference Result 79 states and 157 transitions. [2020-12-22 11:13:45,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:13:45,996 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-22 11:13:45,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:13:45,996 INFO L225 Difference]: With dead ends: 79 [2020-12-22 11:13:45,996 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 11:13:45,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:13:45,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 11:13:45,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 11:13:45,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 11:13:45,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 11:13:45,998 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-12-22 11:13:45,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:13:45,998 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 11:13:45,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 11:13:45,998 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 11:13:45,998 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 11:13:45,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 11:13:46,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 11:13:46 BasicIcfg [2020-12-22 11:13:46,003 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 11:13:46,003 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 11:13:46,003 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 11:13:46,003 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 11:13:46,004 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:13:40" (3/4) ... [2020-12-22 11:13:46,008 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 11:13:46,015 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-22 11:13:46,015 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-22 11:13:46,015 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-22 11:13:46,020 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-22 11:13:46,020 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 11:13:46,020 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 11:13:46,021 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 11:13:46,063 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe032_tso.oepc.i-witness.graphml [2020-12-22 11:13:46,063 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 11:13:46,066 INFO L168 Benchmark]: Toolchain (without parser) took 7041.64 ms. Allocated memory was 174.1 MB in the beginning and 226.5 MB in the end (delta: 52.4 MB). Free memory was 147.7 MB in the beginning and 96.6 MB in the end (delta: 51.2 MB). Peak memory consumption was 104.7 MB. Max. memory is 8.0 GB. [2020-12-22 11:13:46,067 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 174.1 MB. Free memory is still 147.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 11:13:46,067 INFO L168 Benchmark]: CACSL2BoogieTranslator took 841.75 ms. Allocated memory is still 174.1 MB. Free memory was 147.5 MB in the beginning and 151.8 MB in the end (delta: -4.3 MB). Peak memory consumption was 31.6 MB. Max. memory is 8.0 GB. [2020-12-22 11:13:46,068 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.55 ms. Allocated memory is still 174.1 MB. Free memory was 151.3 MB in the beginning and 149.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 11:13:46,068 INFO L168 Benchmark]: Boogie Preprocessor took 65.02 ms. Allocated memory is still 174.1 MB. Free memory was 149.7 MB in the beginning and 148.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:13:46,071 INFO L168 Benchmark]: RCFGBuilder took 648.96 ms. Allocated memory is still 174.1 MB. Free memory was 148.1 MB in the beginning and 126.1 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-22 11:13:46,073 INFO L168 Benchmark]: TraceAbstraction took 5321.34 ms. Allocated memory was 174.1 MB in the beginning and 226.5 MB in the end (delta: 52.4 MB). Free memory was 126.1 MB in the beginning and 99.7 MB in the end (delta: 26.4 MB). Peak memory consumption was 78.3 MB. Max. memory is 8.0 GB. [2020-12-22 11:13:46,073 INFO L168 Benchmark]: Witness Printer took 59.76 ms. Allocated memory is still 226.5 MB. Free memory was 99.7 MB in the beginning and 96.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:13:46,080 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 174.1 MB. Free memory is still 147.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 841.75 ms. Allocated memory is still 174.1 MB. Free memory was 147.5 MB in the beginning and 151.8 MB in the end (delta: -4.3 MB). Peak memory consumption was 31.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 94.55 ms. Allocated memory is still 174.1 MB. Free memory was 151.3 MB in the beginning and 149.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 65.02 ms. Allocated memory is still 174.1 MB. Free memory was 149.7 MB in the beginning and 148.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 648.96 ms. Allocated memory is still 174.1 MB. Free memory was 148.1 MB in the beginning and 126.1 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5321.34 ms. Allocated memory was 174.1 MB in the beginning and 226.5 MB in the end (delta: 52.4 MB). Free memory was 126.1 MB in the beginning and 99.7 MB in the end (delta: 26.4 MB). Peak memory consumption was 78.3 MB. Max. memory is 8.0 GB. * Witness Printer took 59.76 ms. Allocated memory is still 226.5 MB. Free memory was 99.7 MB in the beginning and 96.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 833 VarBasedMoverChecksPositive, 41 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 34 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 81 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.4s, 82 PlacesBefore, 32 PlacesAfterwards, 74 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 60 TotalNumberOfCompositions, 2571 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 4 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.2s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: 181 SDtfs, 202 SDslu, 276 SDs, 0 SdLazy, 132 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 124 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 4466 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...