/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/safe027_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 11:12:15,363 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 11:12:15,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 11:12:15,401 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 11:12:15,402 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 11:12:15,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 11:12:15,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 11:12:15,408 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 11:12:15,410 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 11:12:15,411 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 11:12:15,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 11:12:15,414 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 11:12:15,414 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 11:12:15,416 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 11:12:15,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 11:12:15,418 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 11:12:15,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 11:12:15,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 11:12:15,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 11:12:15,425 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 11:12:15,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 11:12:15,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 11:12:15,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 11:12:15,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 11:12:15,448 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 11:12:15,452 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 11:12:15,453 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 11:12:15,454 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 11:12:15,455 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 11:12:15,456 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 11:12:15,456 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 11:12:15,457 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 11:12:15,458 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 11:12:15,458 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 11:12:15,459 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 11:12:15,460 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 11:12:15,462 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 11:12:15,516 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 11:12:15,519 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 11:12:15,521 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 11:12:15,521 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 11:12:15,522 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 11:12:15,522 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 11:12:15,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 11:12:15,522 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 11:12:15,523 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 11:12:15,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 11:12:15,525 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 11:12:15,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 11:12:15,526 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 11:12:15,526 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 11:12:15,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 11:12:15,527 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 11:12:15,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 11:12:15,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 11:12:15,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 11:12:15,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 11:12:15,528 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 11:12:15,528 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 11:12:15,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 11:12:15,529 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 11:12:15,529 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 11:12:15,529 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 11:12:15,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 11:12:15,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 11:12:15,977 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 11:12:15,979 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 11:12:15,980 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 11:12:15,981 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe027_pso.oepc.i [2020-12-22 11:12:16,068 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c2ab4d53/8cc85f3faaac404cbf44dc4b49036c3c/FLAG6920e1ec1 [2020-12-22 11:12:16,960 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 11:12:16,961 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe027_pso.oepc.i [2020-12-22 11:12:16,987 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c2ab4d53/8cc85f3faaac404cbf44dc4b49036c3c/FLAG6920e1ec1 [2020-12-22 11:12:17,212 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c2ab4d53/8cc85f3faaac404cbf44dc4b49036c3c [2020-12-22 11:12:17,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 11:12:17,219 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 11:12:17,221 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 11:12:17,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 11:12:17,226 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 11:12:17,227 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:12:17" (1/1) ... [2020-12-22 11:12:17,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b23cad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:17, skipping insertion in model container [2020-12-22 11:12:17,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:12:17" (1/1) ... [2020-12-22 11:12:17,242 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 11:12:17,320 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 11:12:17,600 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/safe027_pso.oepc.i[950,963] [2020-12-22 11:12:17,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:12:17,817 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 11:12:17,843 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/safe027_pso.oepc.i[950,963] [2020-12-22 11:12:17,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:12:17,993 INFO L208 MainTranslator]: Completed translation [2020-12-22 11:12:17,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:17 WrapperNode [2020-12-22 11:12:17,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 11:12:17,995 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 11:12:17,995 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 11:12:17,995 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 11:12:18,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:17" (1/1) ... [2020-12-22 11:12:18,022 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:17" (1/1) ... [2020-12-22 11:12:18,046 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 11:12:18,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 11:12:18,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 11:12:18,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 11:12:18,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:17" (1/1) ... [2020-12-22 11:12:18,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:17" (1/1) ... [2020-12-22 11:12:18,061 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:17" (1/1) ... [2020-12-22 11:12:18,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:17" (1/1) ... [2020-12-22 11:12:18,072 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:17" (1/1) ... [2020-12-22 11:12:18,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:17" (1/1) ... [2020-12-22 11:12:18,082 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:17" (1/1) ... [2020-12-22 11:12:18,086 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 11:12:18,087 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 11:12:18,088 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 11:12:18,088 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 11:12:18,089 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:17" (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 11:12:18,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 11:12:18,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-22 11:12:18,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 11:12:18,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 11:12:18,198 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-22 11:12:18,198 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-22 11:12:18,199 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-22 11:12:18,199 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-22 11:12:18,200 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-22 11:12:18,201 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-22 11:12:18,201 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-12-22 11:12:18,203 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-12-22 11:12:18,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 11:12:18,204 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-22 11:12:18,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 11:12:18,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 11:12:18,207 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 11:12:18,675 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 11:12:18,675 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-22 11:12:18,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:12:18 BoogieIcfgContainer [2020-12-22 11:12:18,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 11:12:18,687 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 11:12:18,687 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 11:12:18,692 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 11:12:18,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:12:17" (1/3) ... [2020-12-22 11:12:18,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1723685c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:12:18, skipping insertion in model container [2020-12-22 11:12:18,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:17" (2/3) ... [2020-12-22 11:12:18,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1723685c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:12:18, skipping insertion in model container [2020-12-22 11:12:18,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:12:18" (3/3) ... [2020-12-22 11:12:18,701 INFO L111 eAbstractionObserver]: Analyzing ICFG safe027_pso.oepc.i [2020-12-22 11:12:18,708 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-22 11:12:18,708 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 11:12:18,713 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 11:12:18,714 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-22 11:12:18,794 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,795 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,795 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,795 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,796 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,796 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,799 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,799 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,800 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,800 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,800 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,801 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,804 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,805 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,805 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,805 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,805 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,805 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,806 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,806 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,806 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,806 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,809 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,809 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,810 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,810 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,810 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,810 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,811 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,811 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,811 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,811 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,812 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,812 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,812 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,812 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,813 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,813 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,813 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,813 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,813 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,814 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,814 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,817 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,817 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,817 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,818 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,818 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,821 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,821 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,821 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,822 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,832 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,833 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,833 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,833 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,835 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,836 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,836 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,836 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,838 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,839 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,839 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,839 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:18,841 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-22 11:12:18,861 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 11:12:18,886 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 11:12:18,886 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 11:12:18,886 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 11:12:18,886 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 11:12:18,886 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 11:12:18,887 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 11:12:18,887 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 11:12:18,887 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 11:12:18,901 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-22 11:12:18,903 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 87 transitions, 194 flow [2020-12-22 11:12:18,907 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 87 transitions, 194 flow [2020-12-22 11:12:18,909 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 98 places, 87 transitions, 194 flow [2020-12-22 11:12:18,959 INFO L129 PetriNetUnfolder]: 2/83 cut-off events. [2020-12-22 11:12:18,960 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-22 11:12:18,966 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 83 events. 2/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2020-12-22 11:12:18,975 INFO L116 LiptonReduction]: Number of co-enabled transitions 1866 [2020-12-22 11:12:22,430 WARN L197 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-12-22 11:12:22,536 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-12-22 11:12:22,781 WARN L197 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-12-22 11:12:22,894 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-12-22 11:12:23,173 INFO L131 LiptonReduction]: Checked pairs total: 3161 [2020-12-22 11:12:23,173 INFO L133 LiptonReduction]: Total number of compositions: 72 [2020-12-22 11:12:23,183 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 25 transitions, 70 flow [2020-12-22 11:12:23,235 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 706 states. [2020-12-22 11:12:23,237 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2020-12-22 11:12:23,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 11:12:23,247 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:12:23,248 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:12:23,249 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:12:23,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:12:23,255 INFO L82 PathProgramCache]: Analyzing trace with hash -545263439, now seen corresponding path program 1 times [2020-12-22 11:12:23,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:12:23,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974959810] [2020-12-22 11:12:23,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:12:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:12:23,650 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 11:12:23,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974959810] [2020-12-22 11:12:23,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:12:23,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-22 11:12:23,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284293833] [2020-12-22 11:12:23,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 11:12:23,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:12:23,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 11:12:23,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 11:12:23,678 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 3 states. [2020-12-22 11:12:23,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:12:23,759 INFO L93 Difference]: Finished difference Result 832 states and 2781 transitions. [2020-12-22 11:12:23,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 11:12:23,765 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-22 11:12:23,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:12:23,800 INFO L225 Difference]: With dead ends: 832 [2020-12-22 11:12:23,801 INFO L226 Difference]: Without dead ends: 553 [2020-12-22 11:12:23,804 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 11:12:23,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2020-12-22 11:12:23,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2020-12-22 11:12:23,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 553 states. [2020-12-22 11:12:23,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 1851 transitions. [2020-12-22 11:12:23,990 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 1851 transitions. Word has length 10 [2020-12-22 11:12:23,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:12:23,991 INFO L481 AbstractCegarLoop]: Abstraction has 553 states and 1851 transitions. [2020-12-22 11:12:23,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 11:12:23,991 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 1851 transitions. [2020-12-22 11:12:23,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 11:12:23,998 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:12:23,998 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:12:23,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 11:12:23,999 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:12:24,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:12:24,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1160874164, now seen corresponding path program 1 times [2020-12-22 11:12:24,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:12:24,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063418609] [2020-12-22 11:12:24,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:12:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:12:24,149 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 11:12:24,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063418609] [2020-12-22 11:12:24,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:12:24,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:12:24,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470479794] [2020-12-22 11:12:24,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:12:24,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:12:24,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:12:24,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:12:24,153 INFO L87 Difference]: Start difference. First operand 553 states and 1851 transitions. Second operand 4 states. [2020-12-22 11:12:24,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:12:24,206 INFO L93 Difference]: Finished difference Result 661 states and 2211 transitions. [2020-12-22 11:12:24,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:12:24,207 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-22 11:12:24,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:12:24,214 INFO L225 Difference]: With dead ends: 661 [2020-12-22 11:12:24,214 INFO L226 Difference]: Without dead ends: 661 [2020-12-22 11:12:24,215 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 11:12:24,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2020-12-22 11:12:24,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 634. [2020-12-22 11:12:24,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2020-12-22 11:12:24,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 2130 transitions. [2020-12-22 11:12:24,252 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 2130 transitions. Word has length 11 [2020-12-22 11:12:24,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:12:24,252 INFO L481 AbstractCegarLoop]: Abstraction has 634 states and 2130 transitions. [2020-12-22 11:12:24,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:12:24,252 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 2130 transitions. [2020-12-22 11:12:24,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 11:12:24,255 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:12:24,255 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:12:24,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 11:12:24,256 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:12:24,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:12:24,256 INFO L82 PathProgramCache]: Analyzing trace with hash 276701328, now seen corresponding path program 1 times [2020-12-22 11:12:24,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:12:24,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210162856] [2020-12-22 11:12:24,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:12:24,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:12:24,315 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 11:12:24,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210162856] [2020-12-22 11:12:24,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:12:24,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:12:24,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097581063] [2020-12-22 11:12:24,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:12:24,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:12:24,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:12:24,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:12:24,318 INFO L87 Difference]: Start difference. First operand 634 states and 2130 transitions. Second operand 4 states. [2020-12-22 11:12:24,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:12:24,347 INFO L93 Difference]: Finished difference Result 814 states and 2631 transitions. [2020-12-22 11:12:24,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 11:12:24,348 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-22 11:12:24,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:12:24,352 INFO L225 Difference]: With dead ends: 814 [2020-12-22 11:12:24,352 INFO L226 Difference]: Without dead ends: 454 [2020-12-22 11:12:24,353 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 11:12:24,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2020-12-22 11:12:24,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 442. [2020-12-22 11:12:24,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-12-22 11:12:24,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1382 transitions. [2020-12-22 11:12:24,370 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1382 transitions. Word has length 11 [2020-12-22 11:12:24,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:12:24,370 INFO L481 AbstractCegarLoop]: Abstraction has 442 states and 1382 transitions. [2020-12-22 11:12:24,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:12:24,370 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1382 transitions. [2020-12-22 11:12:24,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 11:12:24,372 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:12:24,372 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:12:24,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 11:12:24,372 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:12:24,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:12:24,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1446350552, now seen corresponding path program 1 times [2020-12-22 11:12:24,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:12:24,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627609440] [2020-12-22 11:12:24,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:12:24,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:12:24,460 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 11:12:24,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627609440] [2020-12-22 11:12:24,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:12:24,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:12:24,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513768147] [2020-12-22 11:12:24,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:12:24,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:12:24,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:12:24,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:12:24,463 INFO L87 Difference]: Start difference. First operand 442 states and 1382 transitions. Second operand 4 states. [2020-12-22 11:12:24,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:12:24,483 INFO L93 Difference]: Finished difference Result 424 states and 1313 transitions. [2020-12-22 11:12:24,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 11:12:24,484 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-22 11:12:24,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:12:24,487 INFO L225 Difference]: With dead ends: 424 [2020-12-22 11:12:24,488 INFO L226 Difference]: Without dead ends: 424 [2020-12-22 11:12:24,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 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 11:12:24,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2020-12-22 11:12:24,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 424. [2020-12-22 11:12:24,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2020-12-22 11:12:24,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 1313 transitions. [2020-12-22 11:12:24,506 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 1313 transitions. Word has length 12 [2020-12-22 11:12:24,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:12:24,506 INFO L481 AbstractCegarLoop]: Abstraction has 424 states and 1313 transitions. [2020-12-22 11:12:24,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:12:24,506 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 1313 transitions. [2020-12-22 11:12:24,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 11:12:24,508 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:12:24,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:12:24,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 11:12:24,508 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:12:24,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:12:24,509 INFO L82 PathProgramCache]: Analyzing trace with hash 367079963, now seen corresponding path program 1 times [2020-12-22 11:12:24,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:12:24,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893908611] [2020-12-22 11:12:24,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:12:24,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:12:24,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:12:24,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893908611] [2020-12-22 11:12:24,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:12:24,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:12:24,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952901473] [2020-12-22 11:12:24,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:12:24,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:12:24,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:12:24,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:12:24,589 INFO L87 Difference]: Start difference. First operand 424 states and 1313 transitions. Second operand 5 states. [2020-12-22 11:12:24,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:12:24,629 INFO L93 Difference]: Finished difference Result 514 states and 1556 transitions. [2020-12-22 11:12:24,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 11:12:24,629 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-22 11:12:24,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:12:24,631 INFO L225 Difference]: With dead ends: 514 [2020-12-22 11:12:24,632 INFO L226 Difference]: Without dead ends: 226 [2020-12-22 11:12:24,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:12:24,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-12-22 11:12:24,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-12-22 11:12:24,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-12-22 11:12:24,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 651 transitions. [2020-12-22 11:12:24,643 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 651 transitions. Word has length 13 [2020-12-22 11:12:24,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:12:24,643 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 651 transitions. [2020-12-22 11:12:24,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:12:24,643 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 651 transitions. [2020-12-22 11:12:24,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 11:12:24,644 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:12:24,644 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:12:24,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 11:12:24,644 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:12:24,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:12:24,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1626162599, now seen corresponding path program 1 times [2020-12-22 11:12:24,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:12:24,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953861153] [2020-12-22 11:12:24,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:12:24,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:12:24,751 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 11:12:24,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953861153] [2020-12-22 11:12:24,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:12:24,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:12:24,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508892400] [2020-12-22 11:12:24,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:12:24,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:12:24,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:12:24,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:12:24,754 INFO L87 Difference]: Start difference. First operand 226 states and 651 transitions. Second operand 4 states. [2020-12-22 11:12:24,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:12:24,806 INFO L93 Difference]: Finished difference Result 287 states and 773 transitions. [2020-12-22 11:12:24,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:12:24,806 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-22 11:12:24,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:12:24,808 INFO L225 Difference]: With dead ends: 287 [2020-12-22 11:12:24,808 INFO L226 Difference]: Without dead ends: 206 [2020-12-22 11:12:24,809 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 11:12:24,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-12-22 11:12:24,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-12-22 11:12:24,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-12-22 11:12:24,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 559 transitions. [2020-12-22 11:12:24,817 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 559 transitions. Word has length 14 [2020-12-22 11:12:24,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:12:24,818 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 559 transitions. [2020-12-22 11:12:24,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:12:24,818 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 559 transitions. [2020-12-22 11:12:24,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 11:12:24,819 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:12:24,819 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:12:24,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 11:12:24,821 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:12:24,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:12:24,821 INFO L82 PathProgramCache]: Analyzing trace with hash 242504516, now seen corresponding path program 1 times [2020-12-22 11:12:24,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:12:24,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551534176] [2020-12-22 11:12:24,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:12:24,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:12:24,916 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 11:12:24,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551534176] [2020-12-22 11:12:24,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:12:24,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:12:24,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257519425] [2020-12-22 11:12:24,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:12:24,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:12:24,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:12:24,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:12:24,924 INFO L87 Difference]: Start difference. First operand 206 states and 559 transitions. Second operand 5 states. [2020-12-22 11:12:24,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:12:24,983 INFO L93 Difference]: Finished difference Result 227 states and 565 transitions. [2020-12-22 11:12:24,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:12:24,984 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-22 11:12:24,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:12:24,986 INFO L225 Difference]: With dead ends: 227 [2020-12-22 11:12:24,986 INFO L226 Difference]: Without dead ends: 162 [2020-12-22 11:12:24,986 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 11:12:24,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-12-22 11:12:24,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-12-22 11:12:24,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-12-22 11:12:24,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 391 transitions. [2020-12-22 11:12:24,992 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 391 transitions. Word has length 15 [2020-12-22 11:12:24,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:12:24,993 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 391 transitions. [2020-12-22 11:12:24,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:12:24,993 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 391 transitions. [2020-12-22 11:12:24,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 11:12:24,994 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:12:24,994 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:12:24,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 11:12:24,994 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:12:24,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:12:24,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1073574531, now seen corresponding path program 1 times [2020-12-22 11:12:24,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:12:24,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859679027] [2020-12-22 11:12:24,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:12:25,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:12:25,075 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 11:12:25,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859679027] [2020-12-22 11:12:25,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:12:25,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:12:25,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367271985] [2020-12-22 11:12:25,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 11:12:25,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:12:25,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 11:12:25,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:12:25,078 INFO L87 Difference]: Start difference. First operand 162 states and 391 transitions. Second operand 6 states. [2020-12-22 11:12:25,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:12:25,143 INFO L93 Difference]: Finished difference Result 158 states and 360 transitions. [2020-12-22 11:12:25,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:12:25,144 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-22 11:12:25,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:12:25,145 INFO L225 Difference]: With dead ends: 158 [2020-12-22 11:12:25,145 INFO L226 Difference]: Without dead ends: 125 [2020-12-22 11:12:25,146 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 11:12:25,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-12-22 11:12:25,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-12-22 11:12:25,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-12-22 11:12:25,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 282 transitions. [2020-12-22 11:12:25,152 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 282 transitions. Word has length 16 [2020-12-22 11:12:25,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:12:25,153 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 282 transitions. [2020-12-22 11:12:25,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 11:12:25,153 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 282 transitions. [2020-12-22 11:12:25,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 11:12:25,154 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:12:25,154 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 11:12:25,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 11:12:25,154 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:12:25,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:12:25,155 INFO L82 PathProgramCache]: Analyzing trace with hash -678185987, now seen corresponding path program 1 times [2020-12-22 11:12:25,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:12:25,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089530533] [2020-12-22 11:12:25,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:12:25,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:12:25,246 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 11:12:25,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089530533] [2020-12-22 11:12:25,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:12:25,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:12:25,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113111664] [2020-12-22 11:12:25,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:12:25,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:12:25,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:12:25,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:12:25,249 INFO L87 Difference]: Start difference. First operand 125 states and 282 transitions. Second operand 4 states. [2020-12-22 11:12:25,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:12:25,268 INFO L93 Difference]: Finished difference Result 166 states and 368 transitions. [2020-12-22 11:12:25,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 11:12:25,268 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-12-22 11:12:25,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:12:25,270 INFO L225 Difference]: With dead ends: 166 [2020-12-22 11:12:25,270 INFO L226 Difference]: Without dead ends: 127 [2020-12-22 11:12:25,270 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 11:12:25,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-12-22 11:12:25,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2020-12-22 11:12:25,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-12-22 11:12:25,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 265 transitions. [2020-12-22 11:12:25,275 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 265 transitions. Word has length 18 [2020-12-22 11:12:25,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:12:25,275 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 265 transitions. [2020-12-22 11:12:25,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:12:25,276 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 265 transitions. [2020-12-22 11:12:25,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 11:12:25,277 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:12:25,277 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 11:12:25,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 11:12:25,277 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:12:25,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:12:25,278 INFO L82 PathProgramCache]: Analyzing trace with hash -972384293, now seen corresponding path program 1 times [2020-12-22 11:12:25,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:12:25,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452469801] [2020-12-22 11:12:25,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:12:25,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:12:25,331 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 11:12:25,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452469801] [2020-12-22 11:12:25,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:12:25,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:12:25,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134262474] [2020-12-22 11:12:25,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:12:25,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:12:25,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:12:25,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:12:25,333 INFO L87 Difference]: Start difference. First operand 125 states and 265 transitions. Second operand 4 states. [2020-12-22 11:12:25,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:12:25,352 INFO L93 Difference]: Finished difference Result 142 states and 293 transitions. [2020-12-22 11:12:25,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 11:12:25,353 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-12-22 11:12:25,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:12:25,355 INFO L225 Difference]: With dead ends: 142 [2020-12-22 11:12:25,356 INFO L226 Difference]: Without dead ends: 87 [2020-12-22 11:12:25,356 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 11:12:25,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-12-22 11:12:25,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2020-12-22 11:12:25,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-12-22 11:12:25,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 160 transitions. [2020-12-22 11:12:25,359 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 160 transitions. Word has length 18 [2020-12-22 11:12:25,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:12:25,360 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 160 transitions. [2020-12-22 11:12:25,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:12:25,360 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 160 transitions. [2020-12-22 11:12:25,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 11:12:25,360 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:12:25,360 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 11:12:25,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 11:12:25,361 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:12:25,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:12:25,362 INFO L82 PathProgramCache]: Analyzing trace with hash -2140587643, now seen corresponding path program 2 times [2020-12-22 11:12:25,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:12:25,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070859039] [2020-12-22 11:12:25,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:12:25,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:12:25,453 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 11:12:25,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070859039] [2020-12-22 11:12:25,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:12:25,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 11:12:25,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653735030] [2020-12-22 11:12:25,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 11:12:25,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:12:25,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 11:12:25,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:12:25,460 INFO L87 Difference]: Start difference. First operand 86 states and 160 transitions. Second operand 7 states. [2020-12-22 11:12:25,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:12:25,508 INFO L93 Difference]: Finished difference Result 81 states and 154 transitions. [2020-12-22 11:12:25,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:12:25,508 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-22 11:12:25,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:12:25,508 INFO L225 Difference]: With dead ends: 81 [2020-12-22 11:12:25,509 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 11:12:25,509 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 11:12:25,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 11:12:25,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 11:12:25,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 11:12:25,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 11:12:25,510 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-12-22 11:12:25,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:12:25,510 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 11:12:25,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 11:12:25,510 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 11:12:25,510 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 11:12:25,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 11:12:25,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 11:12:25 BasicIcfg [2020-12-22 11:12:25,515 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 11:12:25,516 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 11:12:25,516 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 11:12:25,516 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 11:12:25,517 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:12:18" (3/4) ... [2020-12-22 11:12:25,521 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 11:12:25,529 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-22 11:12:25,529 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-22 11:12:25,529 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-22 11:12:25,530 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2020-12-22 11:12:25,538 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2020-12-22 11:12:25,539 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 11:12:25,539 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 11:12:25,539 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 11:12:25,607 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe027_pso.oepc.i-witness.graphml [2020-12-22 11:12:25,612 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 11:12:25,614 INFO L168 Benchmark]: Toolchain (without parser) took 8394.67 ms. Allocated memory was 151.0 MB in the beginning and 228.6 MB in the end (delta: 77.6 MB). Free memory was 124.9 MB in the beginning and 145.8 MB in the end (delta: -20.9 MB). Peak memory consumption was 57.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:12:25,615 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 124.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 11:12:25,616 INFO L168 Benchmark]: CACSL2BoogieTranslator took 772.72 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 93.5 MB in the end (delta: 31.4 MB). Peak memory consumption was 31.5 MB. Max. memory is 8.0 GB. [2020-12-22 11:12:25,616 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.39 ms. Allocated memory is still 151.0 MB. Free memory was 93.5 MB in the beginning and 91.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 11:12:25,617 INFO L168 Benchmark]: Boogie Preprocessor took 39.47 ms. Allocated memory is still 151.0 MB. Free memory was 91.7 MB in the beginning and 90.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:12:25,621 INFO L168 Benchmark]: RCFGBuilder took 594.58 ms. Allocated memory is still 151.0 MB. Free memory was 90.0 MB in the beginning and 131.2 MB in the end (delta: -41.2 MB). Peak memory consumption was 25.5 MB. Max. memory is 8.0 GB. [2020-12-22 11:12:25,622 INFO L168 Benchmark]: TraceAbstraction took 6828.28 ms. Allocated memory was 151.0 MB in the beginning and 228.6 MB in the end (delta: 77.6 MB). Free memory was 130.7 MB in the beginning and 148.4 MB in the end (delta: -17.7 MB). Peak memory consumption was 60.9 MB. Max. memory is 8.0 GB. [2020-12-22 11:12:25,622 INFO L168 Benchmark]: Witness Printer took 96.83 ms. Allocated memory is still 228.6 MB. Free memory was 148.4 MB in the beginning and 145.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:12:25,624 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 124.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 772.72 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 93.5 MB in the end (delta: 31.4 MB). Peak memory consumption was 31.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 51.39 ms. Allocated memory is still 151.0 MB. Free memory was 93.5 MB in the beginning and 91.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.47 ms. Allocated memory is still 151.0 MB. Free memory was 91.7 MB in the beginning and 90.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 594.58 ms. Allocated memory is still 151.0 MB. Free memory was 90.0 MB in the beginning and 131.2 MB in the end (delta: -41.2 MB). Peak memory consumption was 25.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6828.28 ms. Allocated memory was 151.0 MB in the beginning and 228.6 MB in the end (delta: 77.6 MB). Free memory was 130.7 MB in the beginning and 148.4 MB in the end (delta: -17.7 MB). Peak memory consumption was 60.9 MB. Max. memory is 8.0 GB. * Witness Printer took 96.83 ms. Allocated memory is still 228.6 MB. Free memory was 148.4 MB in the beginning and 145.8 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 1210 VarBasedMoverChecksPositive, 66 VarBasedMoverChecksNegative, 13 SemBasedMoverChecksPositive, 53 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.7s, 112 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.2s, 98 PlacesBefore, 38 PlacesAfterwards, 87 TransitionsBefore, 25 TransitionsAfterwards, 1866 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 3161 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, 86 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.6s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: 235 SDtfs, 294 SDslu, 344 SDs, 0 SdLazy, 183 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s 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: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 42 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 156 NumberOfCodeBlocks, 156 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 145 ConstructedInterpolants, 0 QuantifiedInterpolants, 8451 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...