/usr/bin/java -Xmx8000000000 -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-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-8a14012e553caa636f65c1137831746b6d9875cd-8a14012 [2021-08-06 19:04:10,357 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-06 19:04:10,359 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-06 19:04:10,391 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-06 19:04:10,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-06 19:04:10,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-06 19:04:10,411 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-06 19:04:10,413 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-06 19:04:10,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-06 19:04:10,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-06 19:04:10,417 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-06 19:04:10,423 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-06 19:04:10,424 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-06 19:04:10,426 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-06 19:04:10,426 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-06 19:04:10,427 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-06 19:04:10,428 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-06 19:04:10,445 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-06 19:04:10,445 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-06 19:04:10,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-06 19:04:10,446 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-Delay.epf [2021-08-06 19:04:10,471 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-06 19:04:10,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-06 19:04:10,474 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-06 19:04:10,475 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-06 19:04:10,475 INFO L138 SettingsManager]: * Use SBE=true [2021-08-06 19:04:10,475 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-06 19:04:10,475 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-06 19:04:10,475 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-06 19:04:10,475 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-06 19:04:10,475 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-06 19:04:10,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-06 19:04:10,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-06 19:04:10,476 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-06 19:04:10,476 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-06 19:04:10,476 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-06 19:04:10,476 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-06 19:04:10,476 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-06 19:04:10,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-06 19:04:10,477 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-06 19:04:10,477 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-06 19:04:10,477 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-06 19:04:10,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 19:04:10,477 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-06 19:04:10,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-06 19:04:10,477 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-06 19:04:10,477 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-06 19:04:10,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-06 19:04:10,478 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-06 19:04:10,478 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-06 19:04:10,478 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-08-06 19:04:10,478 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-06 19:04:10,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-06 19:04:10,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-06 19:04:10,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-06 19:04:10,711 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-06 19:04:10,711 INFO L275 PluginConnector]: CDTParser initialized [2021-08-06 19:04:10,712 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i [2021-08-06 19:04:10,759 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a5198ea0/619f73f085a14c969c6dc9e4acbda8ce/FLAG52ff63c89 [2021-08-06 19:04:11,199 INFO L306 CDTParser]: Found 1 translation units. [2021-08-06 19:04:11,199 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i [2021-08-06 19:04:11,210 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a5198ea0/619f73f085a14c969c6dc9e4acbda8ce/FLAG52ff63c89 [2021-08-06 19:04:11,225 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a5198ea0/619f73f085a14c969c6dc9e4acbda8ce [2021-08-06 19:04:11,228 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-06 19:04:11,230 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-06 19:04:11,231 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-06 19:04:11,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-06 19:04:11,233 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-06 19:04:11,234 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.08 07:04:11" (1/1) ... [2021-08-06 19:04:11,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36009ae6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:11, skipping insertion in model container [2021-08-06 19:04:11,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.08 07:04:11" (1/1) ... [2021-08-06 19:04:11,239 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-06 19:04:11,279 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-06 19:04:11,411 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/safe016_pso.oepc.i[950,963] [2021-08-06 19:04:11,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-06 19:04:11,550 INFO L203 MainTranslator]: Completed pre-run [2021-08-06 19:04:11,572 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/safe016_pso.oepc.i[950,963] [2021-08-06 19:04:11,607 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-06 19:04:11,631 INFO L208 MainTranslator]: Completed translation [2021-08-06 19:04:11,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:11 WrapperNode [2021-08-06 19:04:11,632 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-06 19:04:11,633 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-06 19:04:11,633 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-06 19:04:11,634 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-06 19:04:11,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:11" (1/1) ... [2021-08-06 19:04:11,661 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:11" (1/1) ... [2021-08-06 19:04:11,674 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-06 19:04:11,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-06 19:04:11,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-06 19:04:11,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-06 19:04:11,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:11" (1/1) ... [2021-08-06 19:04:11,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:11" (1/1) ... [2021-08-06 19:04:11,681 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:11" (1/1) ... [2021-08-06 19:04:11,681 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:11" (1/1) ... [2021-08-06 19:04:11,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:11" (1/1) ... [2021-08-06 19:04:11,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:11" (1/1) ... [2021-08-06 19:04:11,688 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:11" (1/1) ... [2021-08-06 19:04:11,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-06 19:04:11,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-06 19:04:11,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-06 19:04:11,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-06 19:04:11,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:11" (1/1) ... [2021-08-06 19:04:11,695 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 19:04:11,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 19:04:11,734 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-06 19:04:11,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-06 19:04:11,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-06 19:04:11,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-06 19:04:11,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-06 19:04:11,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-06 19:04:11,765 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-06 19:04:11,765 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-06 19:04:11,765 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-06 19:04:11,765 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-06 19:04:11,765 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-06 19:04:11,765 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-06 19:04:11,765 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-08-06 19:04:11,765 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-08-06 19:04:11,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-06 19:04:11,766 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-06 19:04:11,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-06 19:04:11,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-06 19:04:11,767 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-06 19:04:12,164 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-06 19:04:12,165 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-06 19:04:12,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 07:04:12 BoogieIcfgContainer [2021-08-06 19:04:12,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-06 19:04:12,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-06 19:04:12,167 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-06 19:04:12,169 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-06 19:04:12,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.08 07:04:11" (1/3) ... [2021-08-06 19:04:12,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31ccad04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.08 07:04:12, skipping insertion in model container [2021-08-06 19:04:12,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:11" (2/3) ... [2021-08-06 19:04:12,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31ccad04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.08 07:04:12, skipping insertion in model container [2021-08-06 19:04:12,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 07:04:12" (3/3) ... [2021-08-06 19:04:12,171 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc.i [2021-08-06 19:04:12,174 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-06 19:04:12,174 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-06 19:04:12,174 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-06 19:04:12,174 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-06 19:04:12,194 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,194 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,194 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,194 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,195 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,195 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,195 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,195 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,195 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,195 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,195 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,195 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,196 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,196 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,196 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,196 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,196 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,196 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,196 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,196 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,197 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,197 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,197 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,197 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,197 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,197 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,197 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,198 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,198 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,198 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,198 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,198 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,198 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,198 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,198 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,198 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,199 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,199 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,199 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,199 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,199 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,199 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,199 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,199 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,199 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,200 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,200 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,200 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,202 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,202 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,202 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,202 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,205 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,205 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,205 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,206 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,207 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,207 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,207 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,207 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,208 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,208 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,208 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,209 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:12,210 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-06 19:04:12,236 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-08-06 19:04:12,241 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-06 19:04:12,241 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-08-06 19:04:13,774 INFO L276 IsEmpty]: Start isEmpty. Operand has 28882 states, 24122 states have (on average 2.237957051654092) internal successors, (53984), 28881 states have internal predecessors, (53984), 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) [2021-08-06 19:04:13,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-08-06 19:04:13,812 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:04:13,813 INFO L512 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] [2021-08-06 19:04:13,814 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-06 19:04:13,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:04:13,820 INFO L82 PathProgramCache]: Analyzing trace with hash 858729269, now seen corresponding path program 1 times [2021-08-06 19:04:13,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:04:13,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953660041] [2021-08-06 19:04:13,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:04:13,826 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:04:13,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:04:14,185 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:04:14,188 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:04:14,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:04:14,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:04:14,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953660041] [2021-08-06 19:04:14,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953660041] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:04:14,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:04:14,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 19:04:14,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246127865] [2021-08-06 19:04:14,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 19:04:14,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:04:14,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 19:04:14,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-06 19:04:14,308 INFO L87 Difference]: Start difference. First operand has 28882 states, 24122 states have (on average 2.237957051654092) internal successors, (53984), 28881 states have internal predecessors, (53984), 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 7.857142857142857) 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) [2021-08-06 19:04:14,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:04:14,884 INFO L93 Difference]: Finished difference Result 53186 states and 102705 transitions. [2021-08-06 19:04:14,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-06 19:04:14,890 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 [2021-08-06 19:04:14,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:04:15,005 INFO L225 Difference]: With dead ends: 53186 [2021-08-06 19:04:15,006 INFO L226 Difference]: Without dead ends: 17528 [2021-08-06 19:04:15,006 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 138.0ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-08-06 19:04:15,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17528 states. [2021-08-06 19:04:15,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17528 to 12136. [2021-08-06 19:04:15,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12136 states, 11926 states have (on average 2.506037229582425) internal successors, (29887), 12135 states have internal predecessors, (29887), 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) [2021-08-06 19:04:15,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12136 states to 12136 states and 29887 transitions. [2021-08-06 19:04:15,565 INFO L78 Accepts]: Start accepts. Automaton has 12136 states and 29887 transitions. Word has length 55 [2021-08-06 19:04:15,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:04:15,566 INFO L470 AbstractCegarLoop]: Abstraction has 12136 states and 29887 transitions. [2021-08-06 19:04:15,567 INFO L471 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) [2021-08-06 19:04:15,567 INFO L276 IsEmpty]: Start isEmpty. Operand 12136 states and 29887 transitions. [2021-08-06 19:04:15,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-06 19:04:15,576 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:04:15,576 INFO L512 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] [2021-08-06 19:04:15,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-06 19:04:15,576 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-06 19:04:15,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:04:15,577 INFO L82 PathProgramCache]: Analyzing trace with hash 884525078, now seen corresponding path program 1 times [2021-08-06 19:04:15,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:04:15,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851762785] [2021-08-06 19:04:15,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:04:15,578 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:04:15,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:04:15,637 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:04:15,639 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:04:15,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:04:15,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:04:15,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851762785] [2021-08-06 19:04:15,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851762785] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:04:15,705 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:04:15,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 19:04:15,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396094720] [2021-08-06 19:04:15,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 19:04:15,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:04:15,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 19:04:15,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-06 19:04:15,709 INFO L87 Difference]: Start difference. First operand 12136 states and 29887 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 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) [2021-08-06 19:04:16,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:04:16,016 INFO L93 Difference]: Finished difference Result 20688 states and 52292 transitions. [2021-08-06 19:04:16,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-06 19:04:16,016 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 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 [2021-08-06 19:04:16,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:04:16,056 INFO L225 Difference]: With dead ends: 20688 [2021-08-06 19:04:16,056 INFO L226 Difference]: Without dead ends: 14378 [2021-08-06 19:04:16,057 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 124.1ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-08-06 19:04:16,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14378 states. [2021-08-06 19:04:16,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14378 to 9466. [2021-08-06 19:04:16,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9466 states, 9316 states have (on average 2.543366251610133) internal successors, (23694), 9465 states have internal predecessors, (23694), 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) [2021-08-06 19:04:16,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9466 states to 9466 states and 23694 transitions. [2021-08-06 19:04:16,358 INFO L78 Accepts]: Start accepts. Automaton has 9466 states and 23694 transitions. Word has length 57 [2021-08-06 19:04:16,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:04:16,358 INFO L470 AbstractCegarLoop]: Abstraction has 9466 states and 23694 transitions. [2021-08-06 19:04:16,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 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) [2021-08-06 19:04:16,359 INFO L276 IsEmpty]: Start isEmpty. Operand 9466 states and 23694 transitions. [2021-08-06 19:04:16,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-08-06 19:04:16,367 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:04:16,367 INFO L512 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] [2021-08-06 19:04:16,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-06 19:04:16,367 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-06 19:04:16,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:04:16,368 INFO L82 PathProgramCache]: Analyzing trace with hash 473304919, now seen corresponding path program 1 times [2021-08-06 19:04:16,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:04:16,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344115203] [2021-08-06 19:04:16,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:04:16,368 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:04:16,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:04:16,423 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:04:16,424 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:04:16,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:04:16,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:04:16,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344115203] [2021-08-06 19:04:16,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344115203] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:04:16,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:04:16,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 19:04:16,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014628369] [2021-08-06 19:04:16,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 19:04:16,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:04:16,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 19:04:16,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-06 19:04:16,488 INFO L87 Difference]: Start difference. First operand 9466 states and 23694 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 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) [2021-08-06 19:04:16,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:04:16,771 INFO L93 Difference]: Finished difference Result 17162 states and 44316 transitions. [2021-08-06 19:04:16,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-06 19:04:16,772 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 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 59 [2021-08-06 19:04:16,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:04:16,806 INFO L225 Difference]: With dead ends: 17162 [2021-08-06 19:04:16,806 INFO L226 Difference]: Without dead ends: 12970 [2021-08-06 19:04:16,807 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 189.3ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-08-06 19:04:16,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12970 states. [2021-08-06 19:04:17,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12970 to 9002. [2021-08-06 19:04:17,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9002 states, 8852 states have (on average 2.5184139177586986) internal successors, (22293), 9001 states have internal predecessors, (22293), 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) [2021-08-06 19:04:17,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9002 states to 9002 states and 22293 transitions. [2021-08-06 19:04:17,040 INFO L78 Accepts]: Start accepts. Automaton has 9002 states and 22293 transitions. Word has length 59 [2021-08-06 19:04:17,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:04:17,041 INFO L470 AbstractCegarLoop]: Abstraction has 9002 states and 22293 transitions. [2021-08-06 19:04:17,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 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) [2021-08-06 19:04:17,041 INFO L276 IsEmpty]: Start isEmpty. Operand 9002 states and 22293 transitions. [2021-08-06 19:04:17,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-08-06 19:04:17,050 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:04:17,050 INFO L512 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] [2021-08-06 19:04:17,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-06 19:04:17,051 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-06 19:04:17,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:04:17,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1332714732, now seen corresponding path program 1 times [2021-08-06 19:04:17,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:04:17,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763024792] [2021-08-06 19:04:17,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:04:17,052 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:04:17,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:04:17,098 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:04:17,101 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:04:17,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:04:17,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:04:17,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763024792] [2021-08-06 19:04:17,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763024792] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:04:17,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:04:17,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 19:04:17,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452043497] [2021-08-06 19:04:17,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 19:04:17,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:04:17,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 19:04:17,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-06 19:04:17,177 INFO L87 Difference]: Start difference. First operand 9002 states and 22293 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 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) [2021-08-06 19:04:17,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:04:17,475 INFO L93 Difference]: Finished difference Result 16586 states and 46721 transitions. [2021-08-06 19:04:17,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-06 19:04:17,476 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 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 60 [2021-08-06 19:04:17,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:04:17,506 INFO L225 Difference]: With dead ends: 16586 [2021-08-06 19:04:17,506 INFO L226 Difference]: Without dead ends: 11618 [2021-08-06 19:04:17,507 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 129.4ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-08-06 19:04:17,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11618 states. [2021-08-06 19:04:17,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11618 to 7274. [2021-08-06 19:04:17,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7274 states, 7124 states have (on average 2.571027512633352) internal successors, (18316), 7273 states have internal predecessors, (18316), 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) [2021-08-06 19:04:17,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7274 states to 7274 states and 18316 transitions. [2021-08-06 19:04:17,663 INFO L78 Accepts]: Start accepts. Automaton has 7274 states and 18316 transitions. Word has length 60 [2021-08-06 19:04:17,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:04:17,663 INFO L470 AbstractCegarLoop]: Abstraction has 7274 states and 18316 transitions. [2021-08-06 19:04:17,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 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) [2021-08-06 19:04:17,665 INFO L276 IsEmpty]: Start isEmpty. Operand 7274 states and 18316 transitions. [2021-08-06 19:04:17,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-08-06 19:04:17,674 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:04:17,675 INFO L512 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] [2021-08-06 19:04:17,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-06 19:04:17,675 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-06 19:04:17,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:04:17,675 INFO L82 PathProgramCache]: Analyzing trace with hash 862548404, now seen corresponding path program 1 times [2021-08-06 19:04:17,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:04:17,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646184428] [2021-08-06 19:04:17,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:04:17,676 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:04:17,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:04:17,765 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:04:17,769 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:04:17,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:04:17,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:04:17,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646184428] [2021-08-06 19:04:17,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646184428] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:04:17,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:04:17,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 19:04:17,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82173971] [2021-08-06 19:04:17,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-06 19:04:17,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:04:17,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-06 19:04:17,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-06 19:04:17,831 INFO L87 Difference]: Start difference. First operand 7274 states and 18316 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) [2021-08-06 19:04:18,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:04:18,066 INFO L93 Difference]: Finished difference Result 14998 states and 38860 transitions. [2021-08-06 19:04:18,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-06 19:04:18,066 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 [2021-08-06 19:04:18,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:04:18,088 INFO L225 Difference]: With dead ends: 14998 [2021-08-06 19:04:18,088 INFO L226 Difference]: Without dead ends: 9538 [2021-08-06 19:04:18,089 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 94.9ms TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-08-06 19:04:18,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9538 states. [2021-08-06 19:04:18,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9538 to 6594. [2021-08-06 19:04:18,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6594 states, 6454 states have (on average 2.5980787108769756) internal successors, (16768), 6593 states have internal predecessors, (16768), 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) [2021-08-06 19:04:18,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6594 states to 6594 states and 16768 transitions. [2021-08-06 19:04:18,217 INFO L78 Accepts]: Start accepts. Automaton has 6594 states and 16768 transitions. Word has length 61 [2021-08-06 19:04:18,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:04:18,217 INFO L470 AbstractCegarLoop]: Abstraction has 6594 states and 16768 transitions. [2021-08-06 19:04:18,218 INFO L471 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) [2021-08-06 19:04:18,218 INFO L276 IsEmpty]: Start isEmpty. Operand 6594 states and 16768 transitions. [2021-08-06 19:04:18,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-06 19:04:18,226 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:04:18,226 INFO L512 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, 1] [2021-08-06 19:04:18,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-06 19:04:18,226 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-06 19:04:18,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:04:18,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1235208086, now seen corresponding path program 1 times [2021-08-06 19:04:18,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:04:18,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49392947] [2021-08-06 19:04:18,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:04:18,227 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:04:18,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:04:18,252 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:04:18,254 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:04:18,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:04:18,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:04:18,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49392947] [2021-08-06 19:04:18,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49392947] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:04:18,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:04:18,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 19:04:18,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352818863] [2021-08-06 19:04:18,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 19:04:18,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:04:18,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 19:04:18,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-06 19:04:18,302 INFO L87 Difference]: Start difference. First operand 6594 states and 16768 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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) [2021-08-06 19:04:18,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:04:18,474 INFO L93 Difference]: Finished difference Result 13650 states and 37309 transitions. [2021-08-06 19:04:18,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-06 19:04:18,475 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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 62 [2021-08-06 19:04:18,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:04:18,494 INFO L225 Difference]: With dead ends: 13650 [2021-08-06 19:04:18,494 INFO L226 Difference]: Without dead ends: 8430 [2021-08-06 19:04:18,494 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 105.4ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-08-06 19:04:18,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8430 states. [2021-08-06 19:04:18,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8430 to 5230. [2021-08-06 19:04:18,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5230 states, 5130 states have (on average 2.585964912280702) internal successors, (13266), 5229 states have internal predecessors, (13266), 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) [2021-08-06 19:04:18,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5230 states to 5230 states and 13266 transitions. [2021-08-06 19:04:18,599 INFO L78 Accepts]: Start accepts. Automaton has 5230 states and 13266 transitions. Word has length 62 [2021-08-06 19:04:18,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:04:18,599 INFO L470 AbstractCegarLoop]: Abstraction has 5230 states and 13266 transitions. [2021-08-06 19:04:18,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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) [2021-08-06 19:04:18,600 INFO L276 IsEmpty]: Start isEmpty. Operand 5230 states and 13266 transitions. [2021-08-06 19:04:18,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-08-06 19:04:18,607 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:04:18,608 INFO L512 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, 1, 1] [2021-08-06 19:04:18,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-06 19:04:18,608 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-06 19:04:18,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:04:18,608 INFO L82 PathProgramCache]: Analyzing trace with hash 484404217, now seen corresponding path program 1 times [2021-08-06 19:04:18,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:04:18,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11540863] [2021-08-06 19:04:18,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:04:18,609 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:04:18,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:04:18,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:04:18,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:04:18,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11540863] [2021-08-06 19:04:18,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11540863] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:04:18,720 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:04:18,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 19:04:18,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156732111] [2021-08-06 19:04:18,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 19:04:18,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:04:18,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 19:04:18,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-06 19:04:18,722 INFO L87 Difference]: Start difference. First operand 5230 states and 13266 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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) [2021-08-06 19:04:18,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:04:18,803 INFO L93 Difference]: Finished difference Result 6804 states and 17853 transitions. [2021-08-06 19:04:18,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-06 19:04:18,804 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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 63 [2021-08-06 19:04:18,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:04:18,809 INFO L225 Difference]: With dead ends: 6804 [2021-08-06 19:04:18,810 INFO L226 Difference]: Without dead ends: 2662 [2021-08-06 19:04:18,810 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 53.2ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-08-06 19:04:18,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2662 states. [2021-08-06 19:04:18,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2662 to 2662. [2021-08-06 19:04:18,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2662 states, 2562 states have (on average 2.7845433255269323) internal successors, (7134), 2661 states have internal predecessors, (7134), 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) [2021-08-06 19:04:18,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2662 states to 2662 states and 7134 transitions. [2021-08-06 19:04:18,845 INFO L78 Accepts]: Start accepts. Automaton has 2662 states and 7134 transitions. Word has length 63 [2021-08-06 19:04:18,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:04:18,845 INFO L470 AbstractCegarLoop]: Abstraction has 2662 states and 7134 transitions. [2021-08-06 19:04:18,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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) [2021-08-06 19:04:18,845 INFO L276 IsEmpty]: Start isEmpty. Operand 2662 states and 7134 transitions. [2021-08-06 19:04:18,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-08-06 19:04:18,848 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:04:18,848 INFO L512 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, 1, 1] [2021-08-06 19:04:18,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-06 19:04:18,849 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-06 19:04:18,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:04:18,849 INFO L82 PathProgramCache]: Analyzing trace with hash -555100525, now seen corresponding path program 2 times [2021-08-06 19:04:18,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:04:18,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546692547] [2021-08-06 19:04:18,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:04:18,849 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:04:18,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:04:18,894 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 10, result has 47.4 percent of original size [2021-08-06 19:04:18,895 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 10, result has 47.4 percent of original size [2021-08-06 19:04:18,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:04:18,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:04:18,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546692547] [2021-08-06 19:04:18,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546692547] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:04:18,907 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:04:18,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-06 19:04:18,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975223977] [2021-08-06 19:04:18,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-06 19:04:18,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:04:18,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-06 19:04:18,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-06 19:04:18,908 INFO L87 Difference]: Start difference. First operand 2662 states and 7134 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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) [2021-08-06 19:04:18,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:04:18,988 INFO L93 Difference]: Finished difference Result 3335 states and 8433 transitions. [2021-08-06 19:04:18,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-06 19:04:18,988 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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 63 [2021-08-06 19:04:18,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:04:18,994 INFO L225 Difference]: With dead ends: 3335 [2021-08-06 19:04:18,994 INFO L226 Difference]: Without dead ends: 2523 [2021-08-06 19:04:18,994 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 48.7ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-06 19:04:18,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2523 states. [2021-08-06 19:04:19,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2523 to 2523. [2021-08-06 19:04:19,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2523 states, 2423 states have (on average 2.8126289723483286) internal successors, (6815), 2522 states have internal predecessors, (6815), 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) [2021-08-06 19:04:19,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2523 states to 2523 states and 6815 transitions. [2021-08-06 19:04:19,027 INFO L78 Accepts]: Start accepts. Automaton has 2523 states and 6815 transitions. Word has length 63 [2021-08-06 19:04:19,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:04:19,027 INFO L470 AbstractCegarLoop]: Abstraction has 2523 states and 6815 transitions. [2021-08-06 19:04:19,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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) [2021-08-06 19:04:19,027 INFO L276 IsEmpty]: Start isEmpty. Operand 2523 states and 6815 transitions. [2021-08-06 19:04:19,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-08-06 19:04:19,030 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:04:19,030 INFO L512 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, 1, 1, 1] [2021-08-06 19:04:19,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-06 19:04:19,030 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-06 19:04:19,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:04:19,030 INFO L82 PathProgramCache]: Analyzing trace with hash 4966452, now seen corresponding path program 1 times [2021-08-06 19:04:19,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:04:19,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947733054] [2021-08-06 19:04:19,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:04:19,031 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:04:19,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:04:19,088 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 10, result has 47.4 percent of original size [2021-08-06 19:04:19,089 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 10, result has 47.4 percent of original size [2021-08-06 19:04:19,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:04:19,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:04:19,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947733054] [2021-08-06 19:04:19,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947733054] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:04:19,099 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:04:19,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 19:04:19,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616007677] [2021-08-06 19:04:19,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 19:04:19,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:04:19,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 19:04:19,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-06 19:04:19,100 INFO L87 Difference]: Start difference. First operand 2523 states and 6815 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 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) [2021-08-06 19:04:19,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:04:19,189 INFO L93 Difference]: Finished difference Result 2638 states and 6532 transitions. [2021-08-06 19:04:19,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-06 19:04:19,190 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 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 64 [2021-08-06 19:04:19,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:04:19,193 INFO L225 Difference]: With dead ends: 2638 [2021-08-06 19:04:19,194 INFO L226 Difference]: Without dead ends: 1912 [2021-08-06 19:04:19,194 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 60.2ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-08-06 19:04:19,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1912 states. [2021-08-06 19:04:19,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1912 to 1912. [2021-08-06 19:04:19,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1912 states, 1816 states have (on average 2.782488986784141) internal successors, (5053), 1911 states have internal predecessors, (5053), 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) [2021-08-06 19:04:19,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1912 states to 1912 states and 5053 transitions. [2021-08-06 19:04:19,217 INFO L78 Accepts]: Start accepts. Automaton has 1912 states and 5053 transitions. Word has length 64 [2021-08-06 19:04:19,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:04:19,218 INFO L470 AbstractCegarLoop]: Abstraction has 1912 states and 5053 transitions. [2021-08-06 19:04:19,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 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) [2021-08-06 19:04:19,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1912 states and 5053 transitions. [2021-08-06 19:04:19,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-08-06 19:04:19,222 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:04:19,222 INFO L512 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, 1, 1, 1, 1] [2021-08-06 19:04:19,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-06 19:04:19,223 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-06 19:04:19,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:04:19,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1252548764, now seen corresponding path program 1 times [2021-08-06 19:04:19,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:04:19,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020845100] [2021-08-06 19:04:19,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:04:19,223 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:04:19,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:04:19,284 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 10, result has 47.4 percent of original size [2021-08-06 19:04:19,285 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 10, result has 47.4 percent of original size [2021-08-06 19:04:19,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:04:19,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:04:19,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020845100] [2021-08-06 19:04:19,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020845100] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:04:19,296 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:04:19,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 19:04:19,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654991263] [2021-08-06 19:04:19,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-06 19:04:19,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:04:19,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-06 19:04:19,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-06 19:04:19,297 INFO L87 Difference]: Start difference. First operand 1912 states and 5053 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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) [2021-08-06 19:04:19,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:04:19,401 INFO L93 Difference]: Finished difference Result 1255 states and 2721 transitions. [2021-08-06 19:04:19,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-06 19:04:19,401 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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 65 [2021-08-06 19:04:19,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:04:19,403 INFO L225 Difference]: With dead ends: 1255 [2021-08-06 19:04:19,403 INFO L226 Difference]: Without dead ends: 787 [2021-08-06 19:04:19,403 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 78.1ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-08-06 19:04:19,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2021-08-06 19:04:19,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 787. [2021-08-06 19:04:19,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 724 states have (on average 2.4378453038674035) internal successors, (1765), 786 states have internal predecessors, (1765), 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) [2021-08-06 19:04:19,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 1765 transitions. [2021-08-06 19:04:19,412 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 1765 transitions. Word has length 65 [2021-08-06 19:04:19,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:04:19,412 INFO L470 AbstractCegarLoop]: Abstraction has 787 states and 1765 transitions. [2021-08-06 19:04:19,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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) [2021-08-06 19:04:19,412 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 1765 transitions. [2021-08-06 19:04:19,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-06 19:04:19,413 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:04:19,413 INFO L512 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, 1, 1, 1, 1, 1, 1] [2021-08-06 19:04:19,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-06 19:04:19,413 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-06 19:04:19,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:04:19,414 INFO L82 PathProgramCache]: Analyzing trace with hash 218161953, now seen corresponding path program 1 times [2021-08-06 19:04:19,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:04:19,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247751989] [2021-08-06 19:04:19,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:04:19,414 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:04:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:04:19,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:04:19,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:04:19,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247751989] [2021-08-06 19:04:19,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247751989] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:04:19,474 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:04:19,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 19:04:19,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015357311] [2021-08-06 19:04:19,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 19:04:19,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:04:19,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 19:04:19,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-06 19:04:19,475 INFO L87 Difference]: Start difference. First operand 787 states and 1765 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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) [2021-08-06 19:04:19,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:04:19,536 INFO L93 Difference]: Finished difference Result 1253 states and 2944 transitions. [2021-08-06 19:04:19,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-06 19:04:19,537 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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 67 [2021-08-06 19:04:19,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:04:19,539 INFO L225 Difference]: With dead ends: 1253 [2021-08-06 19:04:19,539 INFO L226 Difference]: Without dead ends: 999 [2021-08-06 19:04:19,539 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 51.5ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-08-06 19:04:19,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2021-08-06 19:04:19,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 783. [2021-08-06 19:04:19,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 720 states have (on average 2.436111111111111) internal successors, (1754), 782 states have internal predecessors, (1754), 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) [2021-08-06 19:04:19,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 1754 transitions. [2021-08-06 19:04:19,550 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 1754 transitions. Word has length 67 [2021-08-06 19:04:19,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:04:19,550 INFO L470 AbstractCegarLoop]: Abstraction has 783 states and 1754 transitions. [2021-08-06 19:04:19,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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) [2021-08-06 19:04:19,550 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 1754 transitions. [2021-08-06 19:04:19,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-06 19:04:19,551 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:04:19,551 INFO L512 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, 1, 1, 1, 1, 1, 1] [2021-08-06 19:04:19,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-06 19:04:19,551 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-06 19:04:19,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:04:19,552 INFO L82 PathProgramCache]: Analyzing trace with hash -274550935, now seen corresponding path program 2 times [2021-08-06 19:04:19,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:04:19,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135277973] [2021-08-06 19:04:19,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:04:19,552 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:04:19,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:04:19,623 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 10, result has 47.4 percent of original size [2021-08-06 19:04:19,625 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 10, result has 47.4 percent of original size [2021-08-06 19:04:19,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:04:19,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:04:19,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135277973] [2021-08-06 19:04:19,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135277973] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:04:19,637 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:04:19,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-06 19:04:19,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700597983] [2021-08-06 19:04:19,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-06 19:04:19,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:04:19,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-06 19:04:19,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-06 19:04:19,638 INFO L87 Difference]: Start difference. First operand 783 states and 1754 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 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) [2021-08-06 19:04:19,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:04:19,707 INFO L93 Difference]: Finished difference Result 261 states and 425 transitions. [2021-08-06 19:04:19,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-06 19:04:19,707 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 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 67 [2021-08-06 19:04:19,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:04:19,708 INFO L225 Difference]: With dead ends: 261 [2021-08-06 19:04:19,708 INFO L226 Difference]: Without dead ends: 0 [2021-08-06 19:04:19,708 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 74.0ms TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-08-06 19:04:19,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-06 19:04:19,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-06 19:04:19,708 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) [2021-08-06 19:04:19,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-06 19:04:19,709 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 67 [2021-08-06 19:04:19,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:04:19,709 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-06 19:04:19,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 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) [2021-08-06 19:04:19,709 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-06 19:04:19,709 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-06 19:04:19,711 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-06 19:04:19,711 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-06 19:04:19,711 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-06 19:04:19,711 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-08-06 19:04:19,711 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION [2021-08-06 19:04:19,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-06 19:04:19,714 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-06 19:04:19,714 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-06 19:04:19,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.08 07:04:19 BasicIcfg [2021-08-06 19:04:19,715 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-06 19:04:19,716 INFO L168 Benchmark]: Toolchain (without parser) took 8486.19 ms. Allocated memory was 202.4 MB in the beginning and 2.3 GB in the end (delta: 2.1 GB). Free memory was 166.2 MB in the beginning and 1.6 GB in the end (delta: -1.4 GB). Peak memory consumption was 687.7 MB. Max. memory is 8.0 GB. [2021-08-06 19:04:19,716 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 202.4 MB. Free memory is still 184.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-06 19:04:19,716 INFO L168 Benchmark]: CACSL2BoogieTranslator took 401.95 ms. Allocated memory is still 202.4 MB. Free memory was 165.9 MB in the beginning and 177.4 MB in the end (delta: -11.6 MB). Peak memory consumption was 17.1 MB. Max. memory is 8.0 GB. [2021-08-06 19:04:19,716 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.07 ms. Allocated memory is still 202.4 MB. Free memory was 177.4 MB in the beginning and 175.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-06 19:04:19,716 INFO L168 Benchmark]: Boogie Preprocessor took 15.27 ms. Allocated memory is still 202.4 MB. Free memory was 175.5 MB in the beginning and 173.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-06 19:04:19,716 INFO L168 Benchmark]: RCFGBuilder took 475.88 ms. Allocated memory is still 202.4 MB. Free memory was 173.9 MB in the beginning and 147.2 MB in the end (delta: 26.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. [2021-08-06 19:04:19,716 INFO L168 Benchmark]: TraceAbstraction took 7548.10 ms. Allocated memory was 202.4 MB in the beginning and 2.3 GB in the end (delta: 2.1 GB). Free memory was 146.7 MB in the beginning and 1.6 GB in the end (delta: -1.5 GB). Peak memory consumption was 668.5 MB. Max. memory is 8.0 GB. [2021-08-06 19:04:19,717 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 202.4 MB. Free memory is still 184.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 401.95 ms. Allocated memory is still 202.4 MB. Free memory was 165.9 MB in the beginning and 177.4 MB in the end (delta: -11.6 MB). Peak memory consumption was 17.1 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 41.07 ms. Allocated memory is still 202.4 MB. Free memory was 177.4 MB in the beginning and 175.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 15.27 ms. Allocated memory is still 202.4 MB. Free memory was 175.5 MB in the beginning and 173.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 475.88 ms. Allocated memory is still 202.4 MB. Free memory was 173.9 MB in the beginning and 147.2 MB in the end (delta: 26.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7548.10 ms. Allocated memory was 202.4 MB in the beginning and 2.3 GB in the end (delta: 2.1 GB). Free memory was 146.7 MB in the beginning and 1.6 GB in the end (delta: -1.5 GB). Peak memory consumption was 668.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 135326, positive: 131075, positive conditional: 131075, positive unconditional: 0, negative: 4251, negative conditional: 4251, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 134863, positive: 131075, positive conditional: 0, positive unconditional: 131075, negative: 3788, negative conditional: 0, negative unconditional: 3788, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 976, positive: 950, positive conditional: 0, positive unconditional: 950, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 976, positive: 943, positive conditional: 0, positive unconditional: 943, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 33, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 56, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 41, negative conditional: 0, negative unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 134863, positive: 130125, positive conditional: 0, positive unconditional: 130125, negative: 3762, negative conditional: 0, negative unconditional: 3762, unknown: 976, unknown conditional: 0, unknown unconditional: 976] , Statistics on independence cache: Total cache size (in pairs): 976, Positive cache size: 950, Positive conditional cache size: 0, Positive unconditional cache size: 950, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Independence queries for same thread: 463 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 9 procedures, 126 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 7478.1ms, OverallIterations: 12, TraceHistogramMax: 1, EmptinessCheckTime: 197.6ms, AutomataDifference: 2714.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1437.4ms, PartialOrderReductionTime: 1427.1ms, HoareTripleCheckerStatistics: 1380 SDtfs, 2107 SDslu, 4642 SDs, 0 SdLazy, 573 SolverSat, 114 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 451.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 166 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1147.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=28882occurred in iteration=0, InterpolantAutomatonStates: 130, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1582.4ms AutomataMinimizationTime, 12 MinimizatonAttempts, 24976 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 33.9ms SsaConstructionTime, 160.8ms SatisfiabilityAnalysisTime, 1182.8ms InterpolantComputationTime, 743 NumberOfCodeBlocks, 743 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 731 ConstructedInterpolants, 0 QuantifiedInterpolants, 2473 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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! [2021-08-06 19:04:19,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...