/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-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 10:10:25,099 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 10:10:25,101 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 10:10:25,129 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 10:10:25,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-05 10:10:25,145 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-05 10:10:25,146 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-05 10:10:25,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-05 10:10:25,149 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-05 10:10:25,149 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-05 10:10:25,151 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-05 10:10:25,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-05 10:10:25,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-05 10:10:25,156 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-05 10:10:25,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-05 10:10:25,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-05 10:10:25,161 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-05 10:10:25,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 10:10:25,166 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 10:10:25,167 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 10:10:25,167 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-Separate.epf [2021-06-05 10:10:25,193 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 10:10:25,194 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 10:10:25,194 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 10:10:25,194 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 10:10:25,196 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 10:10:25,196 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 10:10:25,196 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 10:10:25,196 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 10:10:25,196 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 10:10:25,196 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 10:10:25,197 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 10:10:25,197 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 10:10:25,197 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 10:10:25,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 10:10:25,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 10:10:25,197 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 10:10:25,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 10:10:25,197 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 10:10:25,197 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 10:10:25,198 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 10:10:25,198 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 10:10:25,198 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 10:10:25,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 10:10:25,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 10:10:25,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 10:10:25,198 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 10:10:25,198 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 10:10:25,198 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 10:10:25,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 10:10:25,199 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 10:10:25,199 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 10:10:25,199 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-06-05 10:10:25,199 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 10:10:25,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 10:10:25,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 10:10:25,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 10:10:25,447 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 10:10:25,449 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 10:10:25,449 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc.i [2021-06-05 10:10:25,491 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5abec21cc/83f6dbcc6ba14f9e9b0e1f0c6611d42c/FLAG6617d165e [2021-06-05 10:10:25,977 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 10:10:25,977 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc.i [2021-06-05 10:10:25,986 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5abec21cc/83f6dbcc6ba14f9e9b0e1f0c6611d42c/FLAG6617d165e [2021-06-05 10:10:26,287 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5abec21cc/83f6dbcc6ba14f9e9b0e1f0c6611d42c [2021-06-05 10:10:26,289 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 10:10:26,290 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 10:10:26,290 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 10:10:26,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 10:10:26,295 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 10:10:26,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 10:10:26" (1/1) ... [2021-06-05 10:10:26,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2613dce0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:10:26, skipping insertion in model container [2021-06-05 10:10:26,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 10:10:26" (1/1) ... [2021-06-05 10:10:26,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 10:10:26,326 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 10:10:26,461 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/safe025_pso.oepc.i[950,963] [2021-06-05 10:10:26,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 10:10:26,610 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 10:10:26,618 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/safe025_pso.oepc.i[950,963] [2021-06-05 10:10:26,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 10:10:26,698 INFO L208 MainTranslator]: Completed translation [2021-06-05 10:10:26,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:10:26 WrapperNode [2021-06-05 10:10:26,698 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 10:10:26,699 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 10:10:26,699 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 10:10:26,699 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 10:10:26,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:10:26" (1/1) ... [2021-06-05 10:10:26,726 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:10:26" (1/1) ... [2021-06-05 10:10:26,742 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 10:10:26,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 10:10:26,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 10:10:26,743 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 10:10:26,748 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:10:26" (1/1) ... [2021-06-05 10:10:26,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:10:26" (1/1) ... [2021-06-05 10:10:26,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:10:26" (1/1) ... [2021-06-05 10:10:26,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:10:26" (1/1) ... [2021-06-05 10:10:26,766 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:10:26" (1/1) ... [2021-06-05 10:10:26,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:10:26" (1/1) ... [2021-06-05 10:10:26,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:10:26" (1/1) ... [2021-06-05 10:10:26,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 10:10:26,776 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 10:10:26,776 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 10:10:26,776 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 10:10:26,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:10:26" (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 10:10:26,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 10:10:26,830 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-05 10:10:26,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 10:10:26,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 10:10:26,830 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-05 10:10:26,830 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-05 10:10:26,831 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-05 10:10:26,831 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-05 10:10:26,831 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-05 10:10:26,831 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-05 10:10:26,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-05 10:10:26,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-05 10:10:26,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 10:10:26,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 10:10:26,834 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 10:10:27,077 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 10:10:27,077 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-05 10:10:27,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 10:10:27 BoogieIcfgContainer [2021-06-05 10:10:27,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 10:10:27,079 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 10:10:27,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 10:10:27,081 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 10:10:27,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 10:10:26" (1/3) ... [2021-06-05 10:10:27,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6612140e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 10:10:27, skipping insertion in model container [2021-06-05 10:10:27,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:10:26" (2/3) ... [2021-06-05 10:10:27,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6612140e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 10:10:27, skipping insertion in model container [2021-06-05 10:10:27,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 10:10:27" (3/3) ... [2021-06-05 10:10:27,083 INFO L111 eAbstractionObserver]: Analyzing ICFG safe025_pso.oepc.i [2021-06-05 10:10:27,086 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 10:10:27,086 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 10:10:27,086 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 10:10:27,087 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 10:10:27,103 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,103 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,103 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,103 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,103 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,104 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,104 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,104 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,104 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,104 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,104 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,104 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,105 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,105 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,105 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,105 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,105 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,105 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,105 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,105 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,105 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,106 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,106 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,106 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,106 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,106 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,106 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,106 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,106 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,107 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,107 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,107 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,107 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,107 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,107 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,107 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,108 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,109 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,109 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,109 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,112 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,112 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,112 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,112 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,113 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,113 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,114 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,114 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:10:27,115 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 10:10:27,128 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-05 10:10:27,140 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 10:10:27,140 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 10:10:27,140 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 10:10:27,140 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 10:10:27,140 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 10:10:27,140 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 10:10:27,140 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 10:10:27,140 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 10:10:27,147 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 84 transitions, 183 flow [2021-06-05 10:10:27,465 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 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 10:10:27,500 INFO L276 IsEmpty]: Start isEmpty. Operand has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 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 10:10:27,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-06-05 10:10:27,535 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:10:27,536 INFO L521 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 10:10:27,536 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:10:27,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:10:27,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1943773822, now seen corresponding path program 1 times [2021-06-05 10:10:27,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:10:27,546 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977654808] [2021-06-05 10:10:27,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:10:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:10:27,900 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 10:10:27,900 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:10:27,900 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977654808] [2021-06-05 10:10:27,901 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977654808] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:10:27,901 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:10:27,902 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 10:10:27,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026879295] [2021-06-05 10:10:27,905 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 10:10:27,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:10:27,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 10:10:27,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 10:10:27,929 INFO L87 Difference]: Start difference. First operand has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 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 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 10:10:28,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:10:28,256 INFO L93 Difference]: Finished difference Result 18268 states and 62923 transitions. [2021-06-05 10:10:28,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 10:10:28,257 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 10:10:28,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:10:28,365 INFO L225 Difference]: With dead ends: 18268 [2021-06-05 10:10:28,366 INFO L226 Difference]: Without dead ends: 6286 [2021-06-05 10:10:28,367 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 151.1ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-05 10:10:28,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6286 states. [2021-06-05 10:10:28,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6286 to 5356. [2021-06-05 10:10:28,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5356 states, 5355 states have (on average 3.3718020541549953) internal successors, (18056), 5355 states have internal predecessors, (18056), 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 10:10:28,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5356 states to 5356 states and 18056 transitions. [2021-06-05 10:10:28,576 INFO L78 Accepts]: Start accepts. Automaton has 5356 states and 18056 transitions. Word has length 49 [2021-06-05 10:10:28,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:10:28,579 INFO L482 AbstractCegarLoop]: Abstraction has 5356 states and 18056 transitions. [2021-06-05 10:10:28,580 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 10:10:28,580 INFO L276 IsEmpty]: Start isEmpty. Operand 5356 states and 18056 transitions. [2021-06-05 10:10:28,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-06-05 10:10:28,593 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:10:28,594 INFO L521 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 10:10:28,594 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 10:10:28,594 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:10:28,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:10:28,597 INFO L82 PathProgramCache]: Analyzing trace with hash -303430371, now seen corresponding path program 1 times [2021-06-05 10:10:28,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:10:28,597 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610574480] [2021-06-05 10:10:28,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:10:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:10:28,698 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 10:10:28,698 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:10:28,698 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610574480] [2021-06-05 10:10:28,698 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610574480] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:10:28,698 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:10:28,698 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 10:10:28,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387801358] [2021-06-05 10:10:28,699 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 10:10:28,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:10:28,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 10:10:28,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 10:10:28,700 INFO L87 Difference]: Start difference. First operand 5356 states and 18056 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 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 10:10:28,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:10:28,916 INFO L93 Difference]: Finished difference Result 7316 states and 24195 transitions. [2021-06-05 10:10:28,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 10:10:28,917 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 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 10:10:28,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:10:28,940 INFO L225 Difference]: With dead ends: 7316 [2021-06-05 10:10:28,941 INFO L226 Difference]: Without dead ends: 5904 [2021-06-05 10:10:28,941 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 157.3ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-05 10:10:28,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5904 states. [2021-06-05 10:10:29,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5904 to 4616. [2021-06-05 10:10:29,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4616 states, 4615 states have (on average 3.342145178764897) internal successors, (15424), 4615 states have internal predecessors, (15424), 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 10:10:29,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4616 states to 4616 states and 15424 transitions. [2021-06-05 10:10:29,043 INFO L78 Accepts]: Start accepts. Automaton has 4616 states and 15424 transitions. Word has length 51 [2021-06-05 10:10:29,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:10:29,044 INFO L482 AbstractCegarLoop]: Abstraction has 4616 states and 15424 transitions. [2021-06-05 10:10:29,044 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 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 10:10:29,044 INFO L276 IsEmpty]: Start isEmpty. Operand 4616 states and 15424 transitions. [2021-06-05 10:10:29,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-05 10:10:29,052 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:10:29,052 INFO L521 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 10:10:29,053 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 10:10:29,053 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:10:29,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:10:29,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1505957406, now seen corresponding path program 1 times [2021-06-05 10:10:29,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:10:29,054 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230148525] [2021-06-05 10:10:29,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:10:29,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:10:29,168 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 10:10:29,168 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:10:29,169 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230148525] [2021-06-05 10:10:29,169 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230148525] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:10:29,169 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:10:29,169 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 10:10:29,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794795323] [2021-06-05 10:10:29,169 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 10:10:29,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:10:29,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 10:10:29,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 10:10:29,170 INFO L87 Difference]: Start difference. First operand 4616 states and 15424 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 10:10:29,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:10:29,264 INFO L93 Difference]: Finished difference Result 5106 states and 16936 transitions. [2021-06-05 10:10:29,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 10:10:29,264 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 10:10:29,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:10:29,290 INFO L225 Difference]: With dead ends: 5106 [2021-06-05 10:10:29,290 INFO L226 Difference]: Without dead ends: 4406 [2021-06-05 10:10:29,290 INFO L777 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 10:10:29,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4406 states. [2021-06-05 10:10:29,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4406 to 4126. [2021-06-05 10:10:29,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4126 states, 4125 states have (on average 3.3132121212121213) internal successors, (13667), 4125 states have internal predecessors, (13667), 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 10:10:29,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4126 states to 4126 states and 13667 transitions. [2021-06-05 10:10:29,404 INFO L78 Accepts]: Start accepts. Automaton has 4126 states and 13667 transitions. Word has length 53 [2021-06-05 10:10:29,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:10:29,405 INFO L482 AbstractCegarLoop]: Abstraction has 4126 states and 13667 transitions. [2021-06-05 10:10:29,405 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 10:10:29,405 INFO L276 IsEmpty]: Start isEmpty. Operand 4126 states and 13667 transitions. [2021-06-05 10:10:29,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-06-05 10:10:29,413 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:10:29,413 INFO L521 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] [2021-06-05 10:10:29,413 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 10:10:29,413 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:10:29,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:10:29,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1566342532, now seen corresponding path program 1 times [2021-06-05 10:10:29,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:10:29,414 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995199480] [2021-06-05 10:10:29,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:10:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:10:29,497 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 10:10:29,497 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:10:29,497 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995199480] [2021-06-05 10:10:29,498 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995199480] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:10:29,498 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:10:29,498 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 10:10:29,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285674974] [2021-06-05 10:10:29,498 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 10:10:29,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:10:29,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 10:10:29,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 10:10:29,499 INFO L87 Difference]: Start difference. First operand 4126 states and 13667 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 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 10:10:29,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:10:29,643 INFO L93 Difference]: Finished difference Result 5189 states and 16946 transitions. [2021-06-05 10:10:29,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 10:10:29,644 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 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 54 [2021-06-05 10:10:29,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:10:29,653 INFO L225 Difference]: With dead ends: 5189 [2021-06-05 10:10:29,653 INFO L226 Difference]: Without dead ends: 3753 [2021-06-05 10:10:29,653 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 84.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 10:10:29,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3753 states. [2021-06-05 10:10:29,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3753 to 3753. [2021-06-05 10:10:29,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3753 states, 3752 states have (on average 3.246268656716418) internal successors, (12180), 3752 states have internal predecessors, (12180), 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 10:10:29,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3753 states to 3753 states and 12180 transitions. [2021-06-05 10:10:29,718 INFO L78 Accepts]: Start accepts. Automaton has 3753 states and 12180 transitions. Word has length 54 [2021-06-05 10:10:29,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:10:29,719 INFO L482 AbstractCegarLoop]: Abstraction has 3753 states and 12180 transitions. [2021-06-05 10:10:29,719 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 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 10:10:29,720 INFO L276 IsEmpty]: Start isEmpty. Operand 3753 states and 12180 transitions. [2021-06-05 10:10:29,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-06-05 10:10:29,726 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:10:29,727 INFO L521 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 10:10:29,729 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 10:10:29,729 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:10:29,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:10:29,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1073595617, now seen corresponding path program 1 times [2021-06-05 10:10:29,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:10:29,731 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226464373] [2021-06-05 10:10:29,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:10:29,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:10:29,831 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 10:10:29,831 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:10:29,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226464373] [2021-06-05 10:10:29,831 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226464373] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:10:29,831 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:10:29,831 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 10:10:29,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95079562] [2021-06-05 10:10:29,832 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 10:10:29,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:10:29,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 10:10:29,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 10:10:29,832 INFO L87 Difference]: Start difference. First operand 3753 states and 12180 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 10:10:29,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:10:29,949 INFO L93 Difference]: Finished difference Result 3927 states and 12416 transitions. [2021-06-05 10:10:29,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 10:10:29,950 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 10:10:29,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:10:29,956 INFO L225 Difference]: With dead ends: 3927 [2021-06-05 10:10:29,956 INFO L226 Difference]: Without dead ends: 2751 [2021-06-05 10:10:29,956 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 83.6ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-06-05 10:10:29,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2751 states. [2021-06-05 10:10:30,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2751 to 2751. [2021-06-05 10:10:30,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2751 states, 2750 states have (on average 3.104) internal successors, (8536), 2750 states have internal predecessors, (8536), 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 10:10:30,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2751 states to 2751 states and 8536 transitions. [2021-06-05 10:10:30,027 INFO L78 Accepts]: Start accepts. Automaton has 2751 states and 8536 transitions. Word has length 55 [2021-06-05 10:10:30,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:10:30,027 INFO L482 AbstractCegarLoop]: Abstraction has 2751 states and 8536 transitions. [2021-06-05 10:10:30,027 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 10:10:30,027 INFO L276 IsEmpty]: Start isEmpty. Operand 2751 states and 8536 transitions. [2021-06-05 10:10:30,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 10:10:30,031 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:10:30,031 INFO L521 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 10:10:30,031 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 10:10:30,031 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:10:30,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:10:30,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1221177026, now seen corresponding path program 1 times [2021-06-05 10:10:30,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:10:30,032 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127621] [2021-06-05 10:10:30,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:10:30,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:10:30,095 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 10:10:30,095 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:10:30,096 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127621] [2021-06-05 10:10:30,096 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127621] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:10:30,096 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:10:30,096 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 10:10:30,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575900674] [2021-06-05 10:10:30,096 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 10:10:30,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:10:30,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 10:10:30,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 10:10:30,100 INFO L87 Difference]: Start difference. First operand 2751 states and 8536 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 10:10:30,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:10:30,219 INFO L93 Difference]: Finished difference Result 2364 states and 7192 transitions. [2021-06-05 10:10:30,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 10:10:30,219 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 10:10:30,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:10:30,227 INFO L225 Difference]: With dead ends: 2364 [2021-06-05 10:10:30,227 INFO L226 Difference]: Without dead ends: 1644 [2021-06-05 10:10:30,228 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 91.6ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-05 10:10:30,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1644 states. [2021-06-05 10:10:30,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1644 to 1596. [2021-06-05 10:10:30,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1596 states, 1595 states have (on average 2.9711598746081505) internal successors, (4739), 1595 states have internal predecessors, (4739), 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 10:10:30,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1596 states to 1596 states and 4739 transitions. [2021-06-05 10:10:30,259 INFO L78 Accepts]: Start accepts. Automaton has 1596 states and 4739 transitions. Word has length 57 [2021-06-05 10:10:30,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:10:30,261 INFO L482 AbstractCegarLoop]: Abstraction has 1596 states and 4739 transitions. [2021-06-05 10:10:30,261 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 10:10:30,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1596 states and 4739 transitions. [2021-06-05 10:10:30,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-06-05 10:10:30,264 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:10:30,264 INFO L521 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, 1, 1, 1, 1] [2021-06-05 10:10:30,264 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 10:10:30,264 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:10:30,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:10:30,264 INFO L82 PathProgramCache]: Analyzing trace with hash 491831026, now seen corresponding path program 1 times [2021-06-05 10:10:30,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:10:30,264 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019758499] [2021-06-05 10:10:30,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:10:30,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:10:30,343 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 10:10:30,343 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:10:30,343 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019758499] [2021-06-05 10:10:30,343 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019758499] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:10:30,343 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:10:30,343 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 10:10:30,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788627432] [2021-06-05 10:10:30,344 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 10:10:30,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:10:30,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 10:10:30,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 10:10:30,344 INFO L87 Difference]: Start difference. First operand 1596 states and 4739 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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 10:10:30,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:10:30,401 INFO L93 Difference]: Finished difference Result 2211 states and 6595 transitions. [2021-06-05 10:10:30,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 10:10:30,402 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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 61 [2021-06-05 10:10:30,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:10:30,404 INFO L225 Difference]: With dead ends: 2211 [2021-06-05 10:10:30,404 INFO L226 Difference]: Without dead ends: 873 [2021-06-05 10:10:30,404 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.3ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-05 10:10:30,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2021-06-05 10:10:30,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 873. [2021-06-05 10:10:30,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 872 states have (on average 2.897935779816514) internal successors, (2527), 872 states have internal predecessors, (2527), 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 10:10:30,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 2527 transitions. [2021-06-05 10:10:30,416 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 2527 transitions. Word has length 61 [2021-06-05 10:10:30,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:10:30,416 INFO L482 AbstractCegarLoop]: Abstraction has 873 states and 2527 transitions. [2021-06-05 10:10:30,417 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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 10:10:30,417 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 2527 transitions. [2021-06-05 10:10:30,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-06-05 10:10:30,418 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:10:30,418 INFO L521 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, 1, 1, 1, 1] [2021-06-05 10:10:30,418 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 10:10:30,418 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:10:30,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:10:30,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1465502444, now seen corresponding path program 2 times [2021-06-05 10:10:30,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:10:30,419 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271065758] [2021-06-05 10:10:30,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:10:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:10:30,493 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 10:10:30,493 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:10:30,493 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271065758] [2021-06-05 10:10:30,493 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271065758] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:10:30,493 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:10:30,494 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 10:10:30,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319801398] [2021-06-05 10:10:30,494 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 10:10:30,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:10:30,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 10:10:30,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-05 10:10:30,496 INFO L87 Difference]: Start difference. First operand 873 states and 2527 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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 10:10:30,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:10:30,569 INFO L93 Difference]: Finished difference Result 1398 states and 4068 transitions. [2021-06-05 10:10:30,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 10:10:30,569 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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 61 [2021-06-05 10:10:30,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:10:30,572 INFO L225 Difference]: With dead ends: 1398 [2021-06-05 10:10:30,572 INFO L226 Difference]: Without dead ends: 847 [2021-06-05 10:10:30,572 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 72.1ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-06-05 10:10:30,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2021-06-05 10:10:30,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 847. [2021-06-05 10:10:30,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 846 states have (on average 2.900709219858156) internal successors, (2454), 846 states have internal predecessors, (2454), 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 10:10:30,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 2454 transitions. [2021-06-05 10:10:30,586 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 2454 transitions. Word has length 61 [2021-06-05 10:10:30,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:10:30,586 INFO L482 AbstractCegarLoop]: Abstraction has 847 states and 2454 transitions. [2021-06-05 10:10:30,586 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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 10:10:30,586 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 2454 transitions. [2021-06-05 10:10:30,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-06-05 10:10:30,612 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:10:30,612 INFO L521 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, 1, 1, 1, 1] [2021-06-05 10:10:30,612 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-05 10:10:30,612 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:10:30,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:10:30,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1188267042, now seen corresponding path program 3 times [2021-06-05 10:10:30,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:10:30,613 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447383815] [2021-06-05 10:10:30,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:10:30,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:10:30,678 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 10:10:30,678 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:10:30,678 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447383815] [2021-06-05 10:10:30,678 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447383815] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:10:30,678 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:10:30,678 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 10:10:30,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521160856] [2021-06-05 10:10:30,678 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 10:10:30,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:10:30,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 10:10:30,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 10:10:30,679 INFO L87 Difference]: Start difference. First operand 847 states and 2454 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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 10:10:30,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:10:30,730 INFO L93 Difference]: Finished difference Result 1330 states and 3895 transitions. [2021-06-05 10:10:30,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 10:10:30,732 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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 61 [2021-06-05 10:10:30,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:10:30,733 INFO L225 Difference]: With dead ends: 1330 [2021-06-05 10:10:30,733 INFO L226 Difference]: Without dead ends: 805 [2021-06-05 10:10:30,734 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 55.8ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-06-05 10:10:30,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2021-06-05 10:10:30,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2021-06-05 10:10:30,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 804 states have (on average 2.8756218905472637) internal successors, (2312), 804 states have internal predecessors, (2312), 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 10:10:30,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 2312 transitions. [2021-06-05 10:10:30,745 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 2312 transitions. Word has length 61 [2021-06-05 10:10:30,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:10:30,745 INFO L482 AbstractCegarLoop]: Abstraction has 805 states and 2312 transitions. [2021-06-05 10:10:30,745 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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 10:10:30,745 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 2312 transitions. [2021-06-05 10:10:30,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-06-05 10:10:30,746 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:10:30,746 INFO L521 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, 1, 1, 1, 1] [2021-06-05 10:10:30,746 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-05 10:10:30,746 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:10:30,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:10:30,747 INFO L82 PathProgramCache]: Analyzing trace with hash 78142742, now seen corresponding path program 4 times [2021-06-05 10:10:30,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:10:30,747 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774928421] [2021-06-05 10:10:30,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:10:30,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:10:30,809 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 10:10:30,809 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:10:30,809 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774928421] [2021-06-05 10:10:30,809 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774928421] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:10:30,809 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:10:30,809 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 10:10:30,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363054054] [2021-06-05 10:10:30,810 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 10:10:30,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:10:30,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 10:10:30,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-05 10:10:30,810 INFO L87 Difference]: Start difference. First operand 805 states and 2312 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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 10:10:30,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:10:30,857 INFO L93 Difference]: Finished difference Result 751 states and 2150 transitions. [2021-06-05 10:10:30,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 10:10:30,857 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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 61 [2021-06-05 10:10:30,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:10:30,857 INFO L225 Difference]: With dead ends: 751 [2021-06-05 10:10:30,857 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 10:10:30,857 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 63.3ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-06-05 10:10:30,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 10:10:30,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 10:10:30,858 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 10:10:30,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 10:10:30,858 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2021-06-05 10:10:30,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:10:30,858 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 10:10:30,858 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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 10:10:30,858 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 10:10:30,858 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 10:10:30,858 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-05 10:10:30,859 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 10:10:30,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 10:10:30 BasicIcfg [2021-06-05 10:10:30,861 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 10:10:30,862 INFO L168 Benchmark]: Toolchain (without parser) took 4571.96 ms. Allocated memory was 383.8 MB in the beginning and 899.7 MB in the end (delta: 515.9 MB). Free memory was 345.6 MB in the beginning and 696.2 MB in the end (delta: -350.6 MB). Peak memory consumption was 166.1 MB. Max. memory is 16.0 GB. [2021-06-05 10:10:30,862 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 383.8 MB. Free memory is still 364.2 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 10:10:30,862 INFO L168 Benchmark]: CACSL2BoogieTranslator took 407.92 ms. Allocated memory is still 383.8 MB. Free memory was 345.5 MB in the beginning and 344.6 MB in the end (delta: 922.4 kB). Peak memory consumption was 6.9 MB. Max. memory is 16.0 GB. [2021-06-05 10:10:30,862 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.98 ms. Allocated memory is still 383.8 MB. Free memory was 344.6 MB in the beginning and 343.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 10:10:30,862 INFO L168 Benchmark]: Boogie Preprocessor took 32.50 ms. Allocated memory is still 383.8 MB. Free memory was 343.5 MB in the beginning and 341.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 10:10:30,862 INFO L168 Benchmark]: RCFGBuilder took 302.74 ms. Allocated memory is still 383.8 MB. Free memory was 341.4 MB in the beginning and 317.3 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-06-05 10:10:30,863 INFO L168 Benchmark]: TraceAbstraction took 3781.78 ms. Allocated memory was 383.8 MB in the beginning and 899.7 MB in the end (delta: 515.9 MB). Free memory was 317.3 MB in the beginning and 696.2 MB in the end (delta: -378.9 MB). Peak memory consumption was 138.1 MB. Max. memory is 16.0 GB. [2021-06-05 10:10:30,863 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 383.8 MB. Free memory is still 364.2 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 407.92 ms. Allocated memory is still 383.8 MB. Free memory was 345.5 MB in the beginning and 344.6 MB in the end (delta: 922.4 kB). Peak memory consumption was 6.9 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 42.98 ms. Allocated memory is still 383.8 MB. Free memory was 344.6 MB in the beginning and 343.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 32.50 ms. Allocated memory is still 383.8 MB. Free memory was 343.5 MB in the beginning and 341.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 302.74 ms. Allocated memory is still 383.8 MB. Free memory was 341.4 MB in the beginning and 317.3 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3781.78 ms. Allocated memory was 383.8 MB in the beginning and 899.7 MB in the end (delta: 515.9 MB). Free memory was 317.3 MB in the beginning and 696.2 MB in the end (delta: -378.9 MB). Peak memory consumption was 138.1 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 with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3720.4ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 138.9ms, AutomataDifference: 1473.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 325.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1068 SDtfs, 1582 SDslu, 3934 SDs, 0 SdLazy, 443 SolverSat, 73 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 235.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 891.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9332occurred in iteration=0, InterpolantAutomatonStates: 96, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 620.4ms AutomataMinimizationTime, 10 MinimizatonAttempts, 2546 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 27.0ms SsaConstructionTime, 213.7ms SatisfiabilityAnalysisTime, 772.4ms InterpolantComputationTime, 563 NumberOfCodeBlocks, 563 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 553 ConstructedInterpolants, 0 QuantifiedInterpolants, 2135 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...