/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe030_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-05 19:58:16,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 19:58:16,351 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 19:58:16,375 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 19:58:16,397 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-06-05 19:58:16,419 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 19:58:16,419 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 19:58:16,420 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 19:58:16,420 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 19:58:16,422 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 19:58:16,422 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 19:58:16,422 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 19:58:16,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 19:58:16,423 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 19:58:16,423 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 19:58:16,423 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 19:58:16,423 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 19:58:16,424 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 19:58:16,424 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 19:58:16,424 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 19:58:16,424 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 19:58:16,424 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 19:58:16,424 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 19:58:16,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 19:58:16,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 19:58:16,424 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 19:58:16,425 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 19:58:16,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 19:58:16,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 19:58:16,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 19:58:16,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 19:58:16,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 19:58:16,425 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 19:58:16,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 19:58:16,425 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 19:58:16,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 19:58:16,426 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 19:58:16,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 19:58:16,729 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 19:58:16,731 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 19:58:16,732 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 19:58:16,732 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 19:58:16,733 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe030_tso.oepc.i [2021-06-05 19:58:16,793 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cba47d3d/09c68d2707834f08a61fadc01743de97/FLAG35e30a729 [2021-06-05 19:58:17,196 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 19:58:17,197 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_tso.oepc.i [2021-06-05 19:58:17,206 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cba47d3d/09c68d2707834f08a61fadc01743de97/FLAG35e30a729 [2021-06-05 19:58:17,215 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cba47d3d/09c68d2707834f08a61fadc01743de97 [2021-06-05 19:58:17,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 19:58:17,218 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 19:58:17,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 19:58:17,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 19:58:17,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 19:58:17,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 07:58:17" (1/1) ... [2021-06-05 19:58:17,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42dff6cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:58:17, skipping insertion in model container [2021-06-05 19:58:17,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 07:58:17" (1/1) ... [2021-06-05 19:58:17,230 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 19:58:17,269 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 19:58:17,424 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_tso.oepc.i[950,963] [2021-06-05 19:58:17,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 19:58:17,602 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 19:58:17,610 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_tso.oepc.i[950,963] [2021-06-05 19:58:17,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 19:58:17,685 INFO L208 MainTranslator]: Completed translation [2021-06-05 19:58:17,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:58:17 WrapperNode [2021-06-05 19:58:17,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 19:58:17,686 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 19:58:17,686 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 19:58:17,686 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 19:58:17,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:58:17" (1/1) ... [2021-06-05 19:58:17,699 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:58:17" (1/1) ... [2021-06-05 19:58:17,711 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 19:58:17,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 19:58:17,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 19:58:17,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 19:58:17,716 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:58:17" (1/1) ... [2021-06-05 19:58:17,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:58:17" (1/1) ... [2021-06-05 19:58:17,719 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:58:17" (1/1) ... [2021-06-05 19:58:17,719 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:58:17" (1/1) ... [2021-06-05 19:58:17,722 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:58:17" (1/1) ... [2021-06-05 19:58:17,723 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:58:17" (1/1) ... [2021-06-05 19:58:17,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:58:17" (1/1) ... [2021-06-05 19:58:17,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 19:58:17,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 19:58:17,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 19:58:17,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 19:58:17,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:58:17" (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 [2021-06-05 19:58:17,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 19:58:17,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-05 19:58:17,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 19:58:17,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 19:58:17,808 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-05 19:58:17,809 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-05 19:58:17,809 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-05 19:58:17,809 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-05 19:58:17,809 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-05 19:58:17,809 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-05 19:58:17,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-05 19:58:17,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-05 19:58:17,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 19:58:17,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 19:58:17,811 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 19:58:18,069 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 19:58:18,070 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-05 19:58:18,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 07:58:18 BoogieIcfgContainer [2021-06-05 19:58:18,071 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 19:58:18,072 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 19:58:18,072 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 19:58:18,074 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 19:58:18,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 07:58:17" (1/3) ... [2021-06-05 19:58:18,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16abd064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 07:58:18, skipping insertion in model container [2021-06-05 19:58:18,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:58:17" (2/3) ... [2021-06-05 19:58:18,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16abd064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 07:58:18, skipping insertion in model container [2021-06-05 19:58:18,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 07:58:18" (3/3) ... [2021-06-05 19:58:18,076 INFO L111 eAbstractionObserver]: Analyzing ICFG safe030_tso.oepc.i [2021-06-05 19:58:18,080 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 19:58:18,080 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 19:58:18,080 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 19:58:18,081 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 19:58:18,107 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,108 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,108 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,108 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,108 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,108 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,108 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,108 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,109 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,109 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,109 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,109 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,109 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,110 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,110 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,110 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,110 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,110 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,110 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,110 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,110 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,111 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,111 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,111 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,111 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,111 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,111 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,111 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,112 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,112 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,112 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,112 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,112 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,112 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,112 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,113 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,114 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,114 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,114 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,114 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,125 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,125 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,125 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,125 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,129 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,129 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,129 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,129 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:58:18,132 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 19:58:18,146 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-05 19:58:18,158 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 19:58:18,159 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 19:58:18,159 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 19:58:18,159 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 19:58:18,159 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 19:58:18,159 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 19:58:18,159 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 19:58:18,159 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-05 19:58:18,166 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 90 places, 82 transitions, 179 flow [2021-06-05 19:58:18,530 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9330 states, 9328 states have (on average 3.5629288164665525) internal successors, (33235), 9329 states have internal predecessors, (33235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:58:18,566 INFO L276 IsEmpty]: Start isEmpty. Operand has 9330 states, 9328 states have (on average 3.5629288164665525) internal successors, (33235), 9329 states have internal predecessors, (33235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:58:18,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 19:58:18,590 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:58:18,590 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:58:18,591 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:58:18,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:58:18,597 INFO L82 PathProgramCache]: Analyzing trace with hash 292083127, now seen corresponding path program 1 times [2021-06-05 19:58:18,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:58:18,603 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393107170] [2021-06-05 19:58:18,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:58:18,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:58:18,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:58:18,949 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:58:18,949 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393107170] [2021-06-05 19:58:18,950 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393107170] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:58:18,950 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:58:18,950 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 19:58:18,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387336096] [2021-06-05 19:58:18,953 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 19:58:18,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:58:18,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 19:58:18,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 19:58:18,984 INFO L87 Difference]: Start difference. First operand has 9330 states, 9328 states have (on average 3.5629288164665525) internal successors, (33235), 9329 states have internal predecessors, (33235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:58:19,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:58:19,344 INFO L93 Difference]: Finished difference Result 17929 states and 62892 transitions. [2021-06-05 19:58:19,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 19:58:19,346 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 19:58:19,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:58:19,392 INFO L225 Difference]: With dead ends: 17929 [2021-06-05 19:58:19,392 INFO L226 Difference]: Without dead ends: 5742 [2021-06-05 19:58:19,393 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 132.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 19:58:19,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5742 states. [2021-06-05 19:58:19,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5742 to 5094. [2021-06-05 19:58:19,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5094 states, 5093 states have (on average 3.297663459650501) internal successors, (16795), 5093 states have internal predecessors, (16795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:58:19,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5094 states to 5094 states and 16795 transitions. [2021-06-05 19:58:19,682 INFO L78 Accepts]: Start accepts. Automaton has 5094 states and 16795 transitions. Word has length 47 [2021-06-05 19:58:19,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:58:19,682 INFO L482 AbstractCegarLoop]: Abstraction has 5094 states and 16795 transitions. [2021-06-05 19:58:19,683 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:58:19,683 INFO L276 IsEmpty]: Start isEmpty. Operand 5094 states and 16795 transitions. [2021-06-05 19:58:19,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-06-05 19:58:19,691 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:58:19,692 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:58:19,692 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 19:58:19,692 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:58:19,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:58:19,693 INFO L82 PathProgramCache]: Analyzing trace with hash 513000118, now seen corresponding path program 1 times [2021-06-05 19:58:19,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:58:19,693 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558933195] [2021-06-05 19:58:19,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:58:19,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:58:19,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:58:19,821 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:58:19,821 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558933195] [2021-06-05 19:58:19,821 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558933195] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:58:19,821 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:58:19,821 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 19:58:19,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963326758] [2021-06-05 19:58:19,822 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 19:58:19,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:58:19,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 19:58:19,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 19:58:19,823 INFO L87 Difference]: Start difference. First operand 5094 states and 16795 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:58:20,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:58:20,081 INFO L93 Difference]: Finished difference Result 6942 states and 22892 transitions. [2021-06-05 19:58:20,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 19:58:20,081 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-06-05 19:58:20,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:58:20,107 INFO L225 Difference]: With dead ends: 6942 [2021-06-05 19:58:20,107 INFO L226 Difference]: Without dead ends: 5346 [2021-06-05 19:58:20,108 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 145.8ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-05 19:58:20,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5346 states. [2021-06-05 19:58:20,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5346 to 4730. [2021-06-05 19:58:20,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4730 states, 4729 states have (on average 3.2681327976316346) internal successors, (15455), 4729 states have internal predecessors, (15455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:58:20,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4730 states to 4730 states and 15455 transitions. [2021-06-05 19:58:20,240 INFO L78 Accepts]: Start accepts. Automaton has 4730 states and 15455 transitions. Word has length 49 [2021-06-05 19:58:20,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:58:20,241 INFO L482 AbstractCegarLoop]: Abstraction has 4730 states and 15455 transitions. [2021-06-05 19:58:20,241 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:58:20,241 INFO L276 IsEmpty]: Start isEmpty. Operand 4730 states and 15455 transitions. [2021-06-05 19:58:20,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-06-05 19:58:20,249 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:58:20,249 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:58:20,250 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 19:58:20,250 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:58:20,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:58:20,256 INFO L82 PathProgramCache]: Analyzing trace with hash -514663752, now seen corresponding path program 1 times [2021-06-05 19:58:20,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:58:20,257 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293626303] [2021-06-05 19:58:20,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:58:20,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:58:20,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:58:20,335 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:58:20,335 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293626303] [2021-06-05 19:58:20,335 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293626303] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:58:20,335 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:58:20,335 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 19:58:20,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249660624] [2021-06-05 19:58:20,336 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 19:58:20,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:58:20,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 19:58:20,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 19:58:20,337 INFO L87 Difference]: Start difference. First operand 4730 states and 15455 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:58:20,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:58:20,602 INFO L93 Difference]: Finished difference Result 6258 states and 20490 transitions. [2021-06-05 19:58:20,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 19:58:20,602 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-06-05 19:58:20,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:58:20,635 INFO L225 Difference]: With dead ends: 6258 [2021-06-05 19:58:20,635 INFO L226 Difference]: Without dead ends: 5070 [2021-06-05 19:58:20,636 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 147.3ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-05 19:58:20,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5070 states. [2021-06-05 19:58:20,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5070 to 4486. [2021-06-05 19:58:20,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4486 states, 4485 states have (on average 3.2452619843924193) internal successors, (14555), 4485 states have internal predecessors, (14555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:58:20,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4486 states to 4486 states and 14555 transitions. [2021-06-05 19:58:20,738 INFO L78 Accepts]: Start accepts. Automaton has 4486 states and 14555 transitions. Word has length 49 [2021-06-05 19:58:20,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:58:20,739 INFO L482 AbstractCegarLoop]: Abstraction has 4486 states and 14555 transitions. [2021-06-05 19:58:20,739 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:58:20,739 INFO L276 IsEmpty]: Start isEmpty. Operand 4486 states and 14555 transitions. [2021-06-05 19:58:20,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-06-05 19:58:20,746 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:58:20,746 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:58:20,746 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 19:58:20,746 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:58:20,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:58:20,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1333167095, now seen corresponding path program 1 times [2021-06-05 19:58:20,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:58:20,747 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492523788] [2021-06-05 19:58:20,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:58:20,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:58:20,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:58:20,844 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:58:20,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492523788] [2021-06-05 19:58:20,845 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492523788] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:58:20,845 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:58:20,845 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 19:58:20,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935428182] [2021-06-05 19:58:20,845 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 19:58:20,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:58:20,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 19:58:20,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 19:58:20,846 INFO L87 Difference]: Start difference. First operand 4486 states and 14555 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:58:20,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:58:20,940 INFO L93 Difference]: Finished difference Result 5126 states and 16582 transitions. [2021-06-05 19:58:20,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 19:58:20,940 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-06-05 19:58:20,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:58:20,952 INFO L225 Difference]: With dead ends: 5126 [2021-06-05 19:58:20,952 INFO L226 Difference]: Without dead ends: 4426 [2021-06-05 19:58:20,952 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 106.1ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 19:58:20,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4426 states. [2021-06-05 19:58:21,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4426 to 4334. [2021-06-05 19:58:21,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4334 states, 4333 states have (on average 3.2351719363027924) internal successors, (14018), 4333 states have internal predecessors, (14018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:58:21,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4334 states to 4334 states and 14018 transitions. [2021-06-05 19:58:21,073 INFO L78 Accepts]: Start accepts. Automaton has 4334 states and 14018 transitions. Word has length 51 [2021-06-05 19:58:21,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:58:21,074 INFO L482 AbstractCegarLoop]: Abstraction has 4334 states and 14018 transitions. [2021-06-05 19:58:21,074 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:58:21,074 INFO L276 IsEmpty]: Start isEmpty. Operand 4334 states and 14018 transitions. [2021-06-05 19:58:21,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-05 19:58:21,082 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:58:21,082 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:58:21,082 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 19:58:21,083 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:58:21,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:58:21,085 INFO L82 PathProgramCache]: Analyzing trace with hash -2106799697, now seen corresponding path program 1 times [2021-06-05 19:58:21,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:58:21,086 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502418829] [2021-06-05 19:58:21,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:58:21,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:58:21,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:58:21,184 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:58:21,184 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502418829] [2021-06-05 19:58:21,184 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502418829] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:58:21,184 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:58:21,184 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 19:58:21,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721520210] [2021-06-05 19:58:21,185 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 19:58:21,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:58:21,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 19:58:21,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 19:58:21,186 INFO L87 Difference]: Start difference. First operand 4334 states and 14018 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:58:21,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:58:21,345 INFO L93 Difference]: Finished difference Result 6274 states and 19953 transitions. [2021-06-05 19:58:21,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 19:58:21,346 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-06-05 19:58:21,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:58:21,356 INFO L225 Difference]: With dead ends: 6274 [2021-06-05 19:58:21,357 INFO L226 Difference]: Without dead ends: 4694 [2021-06-05 19:58:21,357 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 127.6ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 19:58:21,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4694 states. [2021-06-05 19:58:21,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4694 to 4030. [2021-06-05 19:58:21,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4030 states, 4029 states have (on average 3.166790766939687) internal successors, (12759), 4029 states have internal predecessors, (12759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:58:21,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4030 states to 4030 states and 12759 transitions. [2021-06-05 19:58:21,440 INFO L78 Accepts]: Start accepts. Automaton has 4030 states and 12759 transitions. Word has length 52 [2021-06-05 19:58:21,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:58:21,440 INFO L482 AbstractCegarLoop]: Abstraction has 4030 states and 12759 transitions. [2021-06-05 19:58:21,440 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:58:21,440 INFO L276 IsEmpty]: Start isEmpty. Operand 4030 states and 12759 transitions. [2021-06-05 19:58:21,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-05 19:58:21,446 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:58:21,446 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:58:21,447 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 19:58:21,447 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:58:21,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:58:21,447 INFO L82 PathProgramCache]: Analyzing trace with hash 399864681, now seen corresponding path program 1 times [2021-06-05 19:58:21,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:58:21,447 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640546281] [2021-06-05 19:58:21,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:58:21,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:58:21,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:58:21,501 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:58:21,501 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640546281] [2021-06-05 19:58:21,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640546281] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:58:21,501 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:58:21,501 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 19:58:21,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474755912] [2021-06-05 19:58:21,502 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 19:58:21,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:58:21,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 19:58:21,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 19:58:21,503 INFO L87 Difference]: Start difference. First operand 4030 states and 12759 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:58:21,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:58:21,587 INFO L93 Difference]: Finished difference Result 5830 states and 18337 transitions. [2021-06-05 19:58:21,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 19:58:21,588 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-06-05 19:58:21,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:58:21,599 INFO L225 Difference]: With dead ends: 5830 [2021-06-05 19:58:21,599 INFO L226 Difference]: Without dead ends: 4390 [2021-06-05 19:58:21,600 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 71.2ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 19:58:21,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4390 states. [2021-06-05 19:58:21,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4390 to 3698. [2021-06-05 19:58:21,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3698 states, 3697 states have (on average 3.1317284284555043) internal successors, (11578), 3697 states have internal predecessors, (11578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:58:21,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3698 states to 3698 states and 11578 transitions. [2021-06-05 19:58:21,708 INFO L78 Accepts]: Start accepts. Automaton has 3698 states and 11578 transitions. Word has length 52 [2021-06-05 19:58:21,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:58:21,709 INFO L482 AbstractCegarLoop]: Abstraction has 3698 states and 11578 transitions. [2021-06-05 19:58:21,709 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:58:21,709 INFO L276 IsEmpty]: Start isEmpty. Operand 3698 states and 11578 transitions. [2021-06-05 19:58:21,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-05 19:58:21,714 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:58:21,714 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:58:21,714 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 19:58:21,714 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:58:21,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:58:21,715 INFO L82 PathProgramCache]: Analyzing trace with hash 936249593, now seen corresponding path program 1 times [2021-06-05 19:58:21,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:58:21,715 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045770017] [2021-06-05 19:58:21,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:58:21,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:58:21,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:58:21,768 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:58:21,769 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045770017] [2021-06-05 19:58:21,769 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045770017] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:58:21,769 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:58:21,769 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 19:58:21,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231107589] [2021-06-05 19:58:21,769 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 19:58:21,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:58:21,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 19:58:21,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 19:58:21,770 INFO L87 Difference]: Start difference. First operand 3698 states and 11578 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:58:21,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:58:21,900 INFO L93 Difference]: Finished difference Result 6054 states and 18945 transitions. [2021-06-05 19:58:21,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 19:58:21,900 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-06-05 19:58:21,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:58:21,911 INFO L225 Difference]: With dead ends: 6054 [2021-06-05 19:58:21,911 INFO L226 Difference]: Without dead ends: 4550 [2021-06-05 19:58:21,912 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 107.0ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-05 19:58:21,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4550 states. [2021-06-05 19:58:21,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4550 to 3394. [2021-06-05 19:58:21,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3394 states, 3393 states have (on average 3.09755378720896) internal successors, (10510), 3393 states have internal predecessors, (10510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:58:21,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3394 states to 3394 states and 10510 transitions. [2021-06-05 19:58:21,992 INFO L78 Accepts]: Start accepts. Automaton has 3394 states and 10510 transitions. Word has length 52 [2021-06-05 19:58:21,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:58:21,993 INFO L482 AbstractCegarLoop]: Abstraction has 3394 states and 10510 transitions. [2021-06-05 19:58:21,993 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:58:21,993 INFO L276 IsEmpty]: Start isEmpty. Operand 3394 states and 10510 transitions. [2021-06-05 19:58:21,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-05 19:58:21,998 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:58:21,999 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:58:21,999 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 19:58:21,999 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:58:21,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:58:21,999 INFO L82 PathProgramCache]: Analyzing trace with hash 581200086, now seen corresponding path program 1 times [2021-06-05 19:58:21,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:58:21,999 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788443767] [2021-06-05 19:58:21,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:58:22,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:58:22,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:58:22,069 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:58:22,069 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788443767] [2021-06-05 19:58:22,069 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788443767] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:58:22,069 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:58:22,069 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 19:58:22,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979242626] [2021-06-05 19:58:22,070 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 19:58:22,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:58:22,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 19:58:22,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 19:58:22,070 INFO L87 Difference]: Start difference. First operand 3394 states and 10510 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:58:22,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:58:22,153 INFO L93 Difference]: Finished difference Result 4147 states and 12611 transitions. [2021-06-05 19:58:22,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 19:58:22,153 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-06-05 19:58:22,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:58:22,160 INFO L225 Difference]: With dead ends: 4147 [2021-06-05 19:58:22,160 INFO L226 Difference]: Without dead ends: 3028 [2021-06-05 19:58:22,161 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 60.4ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 19:58:22,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3028 states. [2021-06-05 19:58:22,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3028 to 3028. [2021-06-05 19:58:22,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3028 states, 3027 states have (on average 3.028741328047572) internal successors, (9168), 3027 states have internal predecessors, (9168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:58:22,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3028 states to 3028 states and 9168 transitions. [2021-06-05 19:58:22,241 INFO L78 Accepts]: Start accepts. Automaton has 3028 states and 9168 transitions. Word has length 53 [2021-06-05 19:58:22,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:58:22,241 INFO L482 AbstractCegarLoop]: Abstraction has 3028 states and 9168 transitions. [2021-06-05 19:58:22,241 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:58:22,241 INFO L276 IsEmpty]: Start isEmpty. Operand 3028 states and 9168 transitions. [2021-06-05 19:58:22,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-06-05 19:58:22,248 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:58:22,248 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:58:22,248 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-05 19:58:22,248 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:58:22,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:58:22,248 INFO L82 PathProgramCache]: Analyzing trace with hash -2084168617, now seen corresponding path program 1 times [2021-06-05 19:58:22,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:58:22,249 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438575102] [2021-06-05 19:58:22,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:58:22,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:58:22,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:58:22,330 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:58:22,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438575102] [2021-06-05 19:58:22,330 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438575102] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:58:22,330 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:58:22,330 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 19:58:22,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008798748] [2021-06-05 19:58:22,331 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 19:58:22,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:58:22,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 19:58:22,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 19:58:22,331 INFO L87 Difference]: Start difference. First operand 3028 states and 9168 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:58:22,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:58:22,433 INFO L93 Difference]: Finished difference Result 3001 states and 8835 transitions. [2021-06-05 19:58:22,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 19:58:22,433 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-06-05 19:58:22,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:58:22,437 INFO L225 Difference]: With dead ends: 3001 [2021-06-05 19:58:22,437 INFO L226 Difference]: Without dead ends: 1976 [2021-06-05 19:58:22,438 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 77.5ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-06-05 19:58:22,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2021-06-05 19:58:22,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1976. [2021-06-05 19:58:22,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1976 states, 1975 states have (on average 2.869367088607595) internal successors, (5667), 1975 states have internal predecessors, (5667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:58:22,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 5667 transitions. [2021-06-05 19:58:22,466 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 5667 transitions. Word has length 55 [2021-06-05 19:58:22,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:58:22,466 INFO L482 AbstractCegarLoop]: Abstraction has 1976 states and 5667 transitions. [2021-06-05 19:58:22,466 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:58:22,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 5667 transitions. [2021-06-05 19:58:22,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 19:58:22,468 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:58:22,469 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:58:22,469 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-05 19:58:22,469 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:58:22,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:58:22,469 INFO L82 PathProgramCache]: Analyzing trace with hash -507786984, now seen corresponding path program 1 times [2021-06-05 19:58:22,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:58:22,469 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386712088] [2021-06-05 19:58:22,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:58:22,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:58:22,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:58:22,525 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:58:22,525 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386712088] [2021-06-05 19:58:22,525 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386712088] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:58:22,525 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:58:22,526 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 19:58:22,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675211215] [2021-06-05 19:58:22,526 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 19:58:22,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:58:22,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 19:58:22,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 19:58:22,526 INFO L87 Difference]: Start difference. First operand 1976 states and 5667 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:58:22,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:58:22,587 INFO L93 Difference]: Finished difference Result 1409 states and 3912 transitions. [2021-06-05 19:58:22,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 19:58:22,587 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-06-05 19:58:22,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:58:22,587 INFO L225 Difference]: With dead ends: 1409 [2021-06-05 19:58:22,587 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 19:58:22,588 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 64.5ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-06-05 19:58:22,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 19:58:22,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 19:58:22,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:58:22,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 19:58:22,588 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2021-06-05 19:58:22,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:58:22,588 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 19:58:22,588 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:58:22,588 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 19:58:22,588 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 19:58:22,589 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-05 19:58:22,590 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 19:58:22,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 07:58:22 BasicIcfg [2021-06-05 19:58:22,592 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 19:58:22,592 INFO L168 Benchmark]: Toolchain (without parser) took 5373.69 ms. Allocated memory was 427.8 MB in the beginning and 1.3 GB in the end (delta: 830.5 MB). Free memory was 390.8 MB in the beginning and 1.0 GB in the end (delta: -612.1 MB). Peak memory consumption was 220.0 MB. Max. memory is 16.0 GB. [2021-06-05 19:58:22,592 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 427.8 MB. Free memory is still 409.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 19:58:22,593 INFO L168 Benchmark]: CACSL2BoogieTranslator took 466.09 ms. Allocated memory is still 427.8 MB. Free memory was 390.6 MB in the beginning and 390.7 MB in the end (delta: -87.4 kB). Peak memory consumption was 8.7 MB. Max. memory is 16.0 GB. [2021-06-05 19:58:22,593 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.99 ms. Allocated memory is still 427.8 MB. Free memory was 390.7 MB in the beginning and 388.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 19:58:22,593 INFO L168 Benchmark]: Boogie Preprocessor took 14.36 ms. Allocated memory is still 427.8 MB. Free memory was 388.6 MB in the beginning and 386.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 19:58:22,593 INFO L168 Benchmark]: RCFGBuilder took 344.95 ms. Allocated memory is still 427.8 MB. Free memory was 386.5 MB in the beginning and 362.4 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-06-05 19:58:22,593 INFO L168 Benchmark]: TraceAbstraction took 4519.29 ms. Allocated memory was 427.8 MB in the beginning and 1.3 GB in the end (delta: 830.5 MB). Free memory was 361.4 MB in the beginning and 1.0 GB in the end (delta: -641.6 MB). Peak memory consumption was 189.9 MB. Max. memory is 16.0 GB. [2021-06-05 19:58:22,594 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 427.8 MB. Free memory is still 409.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 466.09 ms. Allocated memory is still 427.8 MB. Free memory was 390.6 MB in the beginning and 390.7 MB in the end (delta: -87.4 kB). Peak memory consumption was 8.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 24.99 ms. Allocated memory is still 427.8 MB. Free memory was 390.7 MB in the beginning and 388.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.36 ms. Allocated memory is still 427.8 MB. Free memory was 388.6 MB in the beginning and 386.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 344.95 ms. Allocated memory is still 427.8 MB. Free memory was 386.5 MB in the beginning and 362.4 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4519.29 ms. Allocated memory was 427.8 MB in the beginning and 1.3 GB in the end (delta: 830.5 MB). Free memory was 361.4 MB in the beginning and 1.0 GB in the end (delta: -641.6 MB). Peak memory consumption was 189.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 105 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4432.1ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 115.3ms, AutomataDifference: 1801.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 371.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1148 SDtfs, 1568 SDslu, 3770 SDs, 0 SdLazy, 381 SolverSat, 67 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 335.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1040.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9330occurred in iteration=0, InterpolantAutomatonStates: 102, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1013.2ms AutomataMinimizationTime, 10 MinimizatonAttempts, 4452 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 28.9ms SsaConstructionTime, 161.1ms SatisfiabilityAnalysisTime, 777.4ms InterpolantComputationTime, 517 NumberOfCodeBlocks, 517 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 507 ConstructedInterpolants, 0 QuantifiedInterpolants, 2123 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...