/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/safe019_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-87fd7473a0bda1db0ad7f77f2116346063730f21-87fd747 [2021-08-21 17:10:09,072 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-21 17:10:09,074 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-21 17:10:09,114 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-21 17:10:09,134 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-21 17:10:09,135 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-21 17:10:09,137 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-21 17:10:09,140 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-21 17:10:09,141 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-21 17:10:09,142 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-21 17:10:09,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-21 17:10:09,152 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-21 17:10:09,155 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-21 17:10:09,156 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-21 17:10:09,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-21 17:10:09,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-21 17:10:09,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-21 17:10:09,184 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-21 17:10:09,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-21 17:10:09,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-21 17:10:09,189 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 [2021-08-21 17:10:09,225 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-21 17:10:09,226 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-21 17:10:09,229 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-21 17:10:09,229 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-21 17:10:09,229 INFO L138 SettingsManager]: * Use SBE=true [2021-08-21 17:10:09,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-21 17:10:09,230 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-21 17:10:09,230 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-21 17:10:09,230 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-21 17:10:09,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-21 17:10:09,231 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-21 17:10:09,231 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-21 17:10:09,231 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-21 17:10:09,232 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-21 17:10:09,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-21 17:10:09,232 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-21 17:10:09,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-21 17:10:09,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-21 17:10:09,232 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-21 17:10:09,233 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-21 17:10:09,233 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-21 17:10:09,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 17:10:09,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-21 17:10:09,233 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-21 17:10:09,233 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-21 17:10:09,234 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-21 17:10:09,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-21 17:10:09,234 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-21 17:10:09,234 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-21 17:10:09,234 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-08-21 17:10:09,234 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-21 17:10:09,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-21 17:10:09,605 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-21 17:10:09,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-21 17:10:09,608 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-21 17:10:09,609 INFO L275 PluginConnector]: CDTParser initialized [2021-08-21 17:10:09,610 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_tso.oepc.i [2021-08-21 17:10:09,674 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3189b243b/2a1adae8ac03431abd70c0a42a265a16/FLAGa0cdea52f [2021-08-21 17:10:10,185 INFO L306 CDTParser]: Found 1 translation units. [2021-08-21 17:10:10,186 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_tso.oepc.i [2021-08-21 17:10:10,205 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3189b243b/2a1adae8ac03431abd70c0a42a265a16/FLAGa0cdea52f [2021-08-21 17:10:10,514 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3189b243b/2a1adae8ac03431abd70c0a42a265a16 [2021-08-21 17:10:10,517 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-21 17:10:10,521 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-21 17:10:10,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-21 17:10:10,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-21 17:10:10,526 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-21 17:10:10,527 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:10:10" (1/1) ... [2021-08-21 17:10:10,527 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46957e5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:10, skipping insertion in model container [2021-08-21 17:10:10,528 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:10:10" (1/1) ... [2021-08-21 17:10:10,533 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-21 17:10:10,584 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-21 17:10:10,712 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_tso.oepc.i[950,963] [2021-08-21 17:10:10,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-21 17:10:10,866 INFO L203 MainTranslator]: Completed pre-run [2021-08-21 17:10:10,874 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_tso.oepc.i[950,963] [2021-08-21 17:10:10,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-21 17:10:10,941 INFO L208 MainTranslator]: Completed translation [2021-08-21 17:10:10,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:10 WrapperNode [2021-08-21 17:10:10,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-21 17:10:10,944 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-21 17:10:10,945 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-21 17:10:10,945 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-21 17:10:10,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:10" (1/1) ... [2021-08-21 17:10:10,977 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:10" (1/1) ... [2021-08-21 17:10:10,995 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-21 17:10:10,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-21 17:10:10,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-21 17:10:10,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-21 17:10:11,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:10" (1/1) ... [2021-08-21 17:10:11,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:10" (1/1) ... [2021-08-21 17:10:11,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:10" (1/1) ... [2021-08-21 17:10:11,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:10" (1/1) ... [2021-08-21 17:10:11,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:10" (1/1) ... [2021-08-21 17:10:11,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:10" (1/1) ... [2021-08-21 17:10:11,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:10" (1/1) ... [2021-08-21 17:10:11,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-21 17:10:11,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-21 17:10:11,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-21 17:10:11,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-21 17:10:11,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:10" (1/1) ... [2021-08-21 17:10:11,022 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 17:10:11,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 17:10:11,066 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) [2021-08-21 17:10:11,082 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 [2021-08-21 17:10:11,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-21 17:10:11,105 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-21 17:10:11,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-21 17:10:11,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-21 17:10:11,107 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-21 17:10:11,107 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-21 17:10:11,107 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-21 17:10:11,107 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-21 17:10:11,107 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-21 17:10:11,107 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-21 17:10:11,107 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-08-21 17:10:11,107 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-08-21 17:10:11,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-21 17:10:11,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-21 17:10:11,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-21 17:10:11,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-21 17:10:11,109 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-21 17:10:11,632 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-21 17:10:11,632 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-21 17:10:11,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:10:11 BoogieIcfgContainer [2021-08-21 17:10:11,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-21 17:10:11,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-21 17:10:11,637 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-21 17:10:11,639 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-21 17:10:11,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:10:10" (1/3) ... [2021-08-21 17:10:11,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36723f5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:10:11, skipping insertion in model container [2021-08-21 17:10:11,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:10" (2/3) ... [2021-08-21 17:10:11,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36723f5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:10:11, skipping insertion in model container [2021-08-21 17:10:11,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:10:11" (3/3) ... [2021-08-21 17:10:11,641 INFO L111 eAbstractionObserver]: Analyzing ICFG safe019_tso.oepc.i [2021-08-21 17:10:11,647 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-21 17:10:11,647 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-21 17:10:11,647 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-21 17:10:11,648 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-21 17:10:11,696 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,697 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,697 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,697 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,697 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,697 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,697 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,697 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,698 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,698 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,698 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,698 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,698 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,699 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,699 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,699 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,699 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,699 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,699 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,699 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,700 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,700 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,700 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,700 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,700 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,701 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,701 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,701 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,701 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,701 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,701 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,701 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,702 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,702 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,702 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,702 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,702 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,703 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,703 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,703 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,703 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,703 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,703 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,703 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,703 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,704 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,704 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,704 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,707 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,707 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,707 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,707 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,712 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,712 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,712 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,712 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,714 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,714 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,714 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,714 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,716 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,716 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,716 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,716 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:10:11,718 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-21 17:10:11,753 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-21 17:10:11,758 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 [2021-08-21 17:10:11,758 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-08-21 17:10:13,847 INFO L276 IsEmpty]: Start isEmpty. Operand has 28883 states, 24123 states have (on average 2.1884094018156945) internal successors, (52791), 28882 states have internal predecessors, (52791), 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) [2021-08-21 17:10:13,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-08-21 17:10:13,903 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:10:13,904 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] [2021-08-21 17:10:13,905 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)] === [2021-08-21 17:10:13,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:10:13,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1221614413, now seen corresponding path program 1 times [2021-08-21 17:10:13,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:10:13,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454448409] [2021-08-21 17:10:13,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:10:13,922 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:10:14,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:10:14,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:10:14,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:10:14,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454448409] [2021-08-21 17:10:14,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454448409] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:10:14,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:10:14,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 17:10:14,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002548871] [2021-08-21 17:10:14,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 17:10:14,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:10:14,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 17:10:14,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-21 17:10:14,590 INFO L87 Difference]: Start difference. First operand has 28883 states, 24123 states have (on average 2.1884094018156945) internal successors, (52791), 28882 states have internal predecessors, (52791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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) [2021-08-21 17:10:15,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:10:15,281 INFO L93 Difference]: Finished difference Result 53819 states and 100506 transitions. [2021-08-21 17:10:15,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 17:10:15,283 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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 56 [2021-08-21 17:10:15,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:10:15,525 INFO L225 Difference]: With dead ends: 53819 [2021-08-21 17:10:15,525 INFO L226 Difference]: Without dead ends: 19977 [2021-08-21 17:10:15,526 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 126.4ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:10:15,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19977 states. [2021-08-21 17:10:16,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19977 to 15105. [2021-08-21 17:10:16,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15105 states, 14811 states have (on average 2.4373101073526433) internal successors, (36099), 15104 states have internal predecessors, (36099), 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) [2021-08-21 17:10:16,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15105 states to 15105 states and 36099 transitions. [2021-08-21 17:10:16,273 INFO L78 Accepts]: Start accepts. Automaton has 15105 states and 36099 transitions. Word has length 56 [2021-08-21 17:10:16,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:10:16,274 INFO L470 AbstractCegarLoop]: Abstraction has 15105 states and 36099 transitions. [2021-08-21 17:10:16,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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) [2021-08-21 17:10:16,275 INFO L276 IsEmpty]: Start isEmpty. Operand 15105 states and 36099 transitions. [2021-08-21 17:10:16,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-08-21 17:10:16,396 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:10:16,397 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] [2021-08-21 17:10:16,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-21 17:10:16,397 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)] === [2021-08-21 17:10:16,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:10:16,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1455001364, now seen corresponding path program 1 times [2021-08-21 17:10:16,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:10:16,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112308976] [2021-08-21 17:10:16,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:10:16,402 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:10:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:10:16,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:10:16,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:10:16,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112308976] [2021-08-21 17:10:16,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112308976] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:10:16,595 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:10:16,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:10:16,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747926552] [2021-08-21 17:10:16,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:10:16,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:10:16,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:10:16,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:10:16,601 INFO L87 Difference]: Start difference. First operand 15105 states and 36099 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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) [2021-08-21 17:10:17,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:10:17,176 INFO L93 Difference]: Finished difference Result 26901 states and 65678 transitions. [2021-08-21 17:10:17,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 17:10:17,177 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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 58 [2021-08-21 17:10:17,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:10:17,265 INFO L225 Difference]: With dead ends: 26901 [2021-08-21 17:10:17,265 INFO L226 Difference]: Without dead ends: 20997 [2021-08-21 17:10:17,267 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 301.9ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-08-21 17:10:17,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20997 states. [2021-08-21 17:10:17,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20997 to 14963. [2021-08-21 17:10:17,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14963 states, 14669 states have (on average 2.454632217601745) internal successors, (36007), 14962 states have internal predecessors, (36007), 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) [2021-08-21 17:10:17,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14963 states to 14963 states and 36007 transitions. [2021-08-21 17:10:17,857 INFO L78 Accepts]: Start accepts. Automaton has 14963 states and 36007 transitions. Word has length 58 [2021-08-21 17:10:17,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:10:17,858 INFO L470 AbstractCegarLoop]: Abstraction has 14963 states and 36007 transitions. [2021-08-21 17:10:17,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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) [2021-08-21 17:10:17,858 INFO L276 IsEmpty]: Start isEmpty. Operand 14963 states and 36007 transitions. [2021-08-21 17:10:17,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-08-21 17:10:17,873 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:10:17,874 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] [2021-08-21 17:10:17,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-21 17:10:17,874 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)] === [2021-08-21 17:10:17,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:10:17,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1708649036, now seen corresponding path program 1 times [2021-08-21 17:10:17,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:10:17,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989759565] [2021-08-21 17:10:17,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:10:17,883 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:10:17,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:10:18,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:10:18,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:10:18,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989759565] [2021-08-21 17:10:18,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989759565] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:10:18,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:10:18,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:10:18,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665301594] [2021-08-21 17:10:18,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:10:18,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:10:18,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:10:18,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:10:18,031 INFO L87 Difference]: Start difference. First operand 14963 states and 36007 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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) [2021-08-21 17:10:18,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:10:18,445 INFO L93 Difference]: Finished difference Result 23099 states and 56617 transitions. [2021-08-21 17:10:18,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-21 17:10:18,446 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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 58 [2021-08-21 17:10:18,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:10:18,506 INFO L225 Difference]: With dead ends: 23099 [2021-08-21 17:10:18,506 INFO L226 Difference]: Without dead ends: 16187 [2021-08-21 17:10:18,506 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 145.7ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-08-21 17:10:18,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16187 states. [2021-08-21 17:10:18,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16187 to 11795. [2021-08-21 17:10:18,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11795 states, 11585 states have (on average 2.4738023305999137) internal successors, (28659), 11794 states have internal predecessors, (28659), 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) [2021-08-21 17:10:18,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11795 states to 11795 states and 28659 transitions. [2021-08-21 17:10:18,973 INFO L78 Accepts]: Start accepts. Automaton has 11795 states and 28659 transitions. Word has length 58 [2021-08-21 17:10:18,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:10:18,973 INFO L470 AbstractCegarLoop]: Abstraction has 11795 states and 28659 transitions. [2021-08-21 17:10:18,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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) [2021-08-21 17:10:18,974 INFO L276 IsEmpty]: Start isEmpty. Operand 11795 states and 28659 transitions. [2021-08-21 17:10:18,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-08-21 17:10:18,993 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:10:18,993 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] [2021-08-21 17:10:18,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-21 17:10:18,994 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)] === [2021-08-21 17:10:18,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:10:18,995 INFO L82 PathProgramCache]: Analyzing trace with hash -400632331, now seen corresponding path program 1 times [2021-08-21 17:10:18,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:10:18,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067106338] [2021-08-21 17:10:18,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:10:18,995 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:10:19,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:10:19,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:10:19,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:10:19,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067106338] [2021-08-21 17:10:19,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067106338] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:10:19,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:10:19,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:10:19,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240901451] [2021-08-21 17:10:19,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:10:19,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:10:19,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:10:19,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:10:19,199 INFO L87 Difference]: Start difference. First operand 11795 states and 28659 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) [2021-08-21 17:10:19,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:10:19,448 INFO L93 Difference]: Finished difference Result 18595 states and 45949 transitions. [2021-08-21 17:10:19,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-21 17:10:19,449 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 [2021-08-21 17:10:19,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:10:19,496 INFO L225 Difference]: With dead ends: 18595 [2021-08-21 17:10:19,496 INFO L226 Difference]: Without dead ends: 13215 [2021-08-21 17:10:19,497 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 217.5ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-08-21 17:10:19,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13215 states. [2021-08-21 17:10:19,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13215 to 9337. [2021-08-21 17:10:19,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9337 states, 9187 states have (on average 2.5168172417546533) internal successors, (23122), 9336 states have internal predecessors, (23122), 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) [2021-08-21 17:10:19,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9337 states to 9337 states and 23122 transitions. [2021-08-21 17:10:19,855 INFO L78 Accepts]: Start accepts. Automaton has 9337 states and 23122 transitions. Word has length 60 [2021-08-21 17:10:19,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:10:19,856 INFO L470 AbstractCegarLoop]: Abstraction has 9337 states and 23122 transitions. [2021-08-21 17:10:19,856 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) [2021-08-21 17:10:19,856 INFO L276 IsEmpty]: Start isEmpty. Operand 9337 states and 23122 transitions. [2021-08-21 17:10:19,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-08-21 17:10:19,869 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:10:19,869 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] [2021-08-21 17:10:19,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-21 17:10:19,870 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)] === [2021-08-21 17:10:19,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:10:19,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1738816982, now seen corresponding path program 1 times [2021-08-21 17:10:19,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:10:19,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895871552] [2021-08-21 17:10:19,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:10:19,871 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:10:19,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:10:20,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:10:20,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:10:20,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895871552] [2021-08-21 17:10:20,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895871552] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:10:20,029 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:10:20,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-21 17:10:20,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454505657] [2021-08-21 17:10:20,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 17:10:20,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:10:20,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 17:10:20,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-08-21 17:10:20,030 INFO L87 Difference]: Start difference. First operand 9337 states and 23122 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) [2021-08-21 17:10:20,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:10:20,247 INFO L93 Difference]: Finished difference Result 16423 states and 40762 transitions. [2021-08-21 17:10:20,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-21 17:10:20,248 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 [2021-08-21 17:10:20,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:10:20,279 INFO L225 Difference]: With dead ends: 16423 [2021-08-21 17:10:20,280 INFO L226 Difference]: Without dead ends: 9399 [2021-08-21 17:10:20,280 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 121.9ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-08-21 17:10:20,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9399 states. [2021-08-21 17:10:20,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9399 to 6503. [2021-08-21 17:10:20,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6503 states, 6403 states have (on average 2.555052319225363) internal successors, (16360), 6502 states have internal predecessors, (16360), 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) [2021-08-21 17:10:20,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6503 states to 6503 states and 16360 transitions. [2021-08-21 17:10:20,544 INFO L78 Accepts]: Start accepts. Automaton has 6503 states and 16360 transitions. Word has length 61 [2021-08-21 17:10:20,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:10:20,544 INFO L470 AbstractCegarLoop]: Abstraction has 6503 states and 16360 transitions. [2021-08-21 17:10:20,544 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) [2021-08-21 17:10:20,544 INFO L276 IsEmpty]: Start isEmpty. Operand 6503 states and 16360 transitions. [2021-08-21 17:10:20,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 17:10:20,553 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:10:20,553 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] [2021-08-21 17:10:20,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-21 17:10:20,554 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)] === [2021-08-21 17:10:20,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:10:20,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1880296726, now seen corresponding path program 1 times [2021-08-21 17:10:20,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:10:20,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589018771] [2021-08-21 17:10:20,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:10:20,555 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:10:20,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:10:20,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:10:20,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:10:20,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589018771] [2021-08-21 17:10:20,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589018771] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:10:20,666 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:10:20,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:10:20,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656805124] [2021-08-21 17:10:20,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:10:20,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:10:20,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:10:20,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:10:20,667 INFO L87 Difference]: Start difference. First operand 6503 states and 16360 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) [2021-08-21 17:10:21,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:10:21,043 INFO L93 Difference]: Finished difference Result 10951 states and 28041 transitions. [2021-08-21 17:10:21,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-21 17:10:21,044 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 [2021-08-21 17:10:21,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:10:21,068 INFO L225 Difference]: With dead ends: 10951 [2021-08-21 17:10:21,069 INFO L226 Difference]: Without dead ends: 8199 [2021-08-21 17:10:21,069 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 157.3ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-08-21 17:10:21,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8199 states. [2021-08-21 17:10:21,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8199 to 6263. [2021-08-21 17:10:21,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6263 states, 6163 states have (on average 2.5464871004380982) internal successors, (15694), 6262 states have internal predecessors, (15694), 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) [2021-08-21 17:10:21,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6263 states to 6263 states and 15694 transitions. [2021-08-21 17:10:21,253 INFO L78 Accepts]: Start accepts. Automaton has 6263 states and 15694 transitions. Word has length 62 [2021-08-21 17:10:21,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:10:21,253 INFO L470 AbstractCegarLoop]: Abstraction has 6263 states and 15694 transitions. [2021-08-21 17:10:21,253 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) [2021-08-21 17:10:21,254 INFO L276 IsEmpty]: Start isEmpty. Operand 6263 states and 15694 transitions. [2021-08-21 17:10:21,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-08-21 17:10:21,263 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:10:21,263 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] [2021-08-21 17:10:21,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-21 17:10:21,264 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)] === [2021-08-21 17:10:21,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:10:21,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1380424809, now seen corresponding path program 1 times [2021-08-21 17:10:21,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:10:21,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147379117] [2021-08-21 17:10:21,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:10:21,265 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:10:21,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:10:21,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:10:21,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:10:21,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147379117] [2021-08-21 17:10:21,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147379117] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:10:21,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:10:21,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:10:21,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094059503] [2021-08-21 17:10:21,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:10:21,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:10:21,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:10:21,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:10:21,366 INFO L87 Difference]: Start difference. First operand 6263 states and 15694 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) [2021-08-21 17:10:21,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:10:21,537 INFO L93 Difference]: Finished difference Result 9399 states and 26415 transitions. [2021-08-21 17:10:21,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 17:10:21,538 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 [2021-08-21 17:10:21,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:10:21,554 INFO L225 Difference]: With dead ends: 9399 [2021-08-21 17:10:21,555 INFO L226 Difference]: Without dead ends: 6327 [2021-08-21 17:10:21,555 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 108.5ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-08-21 17:10:21,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6327 states. [2021-08-21 17:10:21,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6327 to 4967. [2021-08-21 17:10:21,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4967 states, 4867 states have (on average 2.5911238956235874) internal successors, (12611), 4966 states have internal predecessors, (12611), 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) [2021-08-21 17:10:21,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4967 states to 4967 states and 12611 transitions. [2021-08-21 17:10:21,732 INFO L78 Accepts]: Start accepts. Automaton has 4967 states and 12611 transitions. Word has length 63 [2021-08-21 17:10:21,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:10:21,733 INFO L470 AbstractCegarLoop]: Abstraction has 4967 states and 12611 transitions. [2021-08-21 17:10:21,733 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) [2021-08-21 17:10:21,733 INFO L276 IsEmpty]: Start isEmpty. Operand 4967 states and 12611 transitions. [2021-08-21 17:10:21,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-08-21 17:10:21,741 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:10:21,741 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] [2021-08-21 17:10:21,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-21 17:10:21,742 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)] === [2021-08-21 17:10:21,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:10:21,742 INFO L82 PathProgramCache]: Analyzing trace with hash 286317431, now seen corresponding path program 1 times [2021-08-21 17:10:21,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:10:21,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310578368] [2021-08-21 17:10:21,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:10:21,743 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:10:21,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:10:21,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:10:21,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:10:21,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310578368] [2021-08-21 17:10:21,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310578368] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:10:21,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:10:21,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-21 17:10:21,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803602195] [2021-08-21 17:10:21,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 17:10:21,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:10:21,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 17:10:21,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-21 17:10:21,871 INFO L87 Difference]: Start difference. First operand 4967 states and 12611 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 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) [2021-08-21 17:10:21,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:10:21,987 INFO L93 Difference]: Finished difference Result 9197 states and 24859 transitions. [2021-08-21 17:10:21,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-21 17:10:21,988 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 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 [2021-08-21 17:10:21,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:10:22,004 INFO L225 Difference]: With dead ends: 9197 [2021-08-21 17:10:22,004 INFO L226 Difference]: Without dead ends: 5367 [2021-08-21 17:10:22,005 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 80.5ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-08-21 17:10:22,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5367 states. [2021-08-21 17:10:22,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5367 to 4247. [2021-08-21 17:10:22,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4247 states, 4147 states have (on average 2.7171449240414756) internal successors, (11268), 4246 states have internal predecessors, (11268), 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) [2021-08-21 17:10:22,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4247 states to 4247 states and 11268 transitions. [2021-08-21 17:10:22,101 INFO L78 Accepts]: Start accepts. Automaton has 4247 states and 11268 transitions. Word has length 64 [2021-08-21 17:10:22,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:10:22,102 INFO L470 AbstractCegarLoop]: Abstraction has 4247 states and 11268 transitions. [2021-08-21 17:10:22,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 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) [2021-08-21 17:10:22,102 INFO L276 IsEmpty]: Start isEmpty. Operand 4247 states and 11268 transitions. [2021-08-21 17:10:22,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-08-21 17:10:22,110 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:10:22,110 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] [2021-08-21 17:10:22,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-21 17:10:22,110 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)] === [2021-08-21 17:10:22,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:10:22,110 INFO L82 PathProgramCache]: Analyzing trace with hash -753187311, now seen corresponding path program 2 times [2021-08-21 17:10:22,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:10:22,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704494787] [2021-08-21 17:10:22,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:10:22,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:10:22,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:10:22,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:10:22,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:10:22,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704494787] [2021-08-21 17:10:22,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704494787] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:10:22,192 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:10:22,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 17:10:22,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876552044] [2021-08-21 17:10:22,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 17:10:22,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:10:22,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 17:10:22,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-21 17:10:22,194 INFO L87 Difference]: Start difference. First operand 4247 states and 11268 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 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) [2021-08-21 17:10:22,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:10:22,347 INFO L93 Difference]: Finished difference Result 5951 states and 15296 transitions. [2021-08-21 17:10:22,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 17:10:22,347 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 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 [2021-08-21 17:10:22,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:10:22,355 INFO L225 Difference]: With dead ends: 5951 [2021-08-21 17:10:22,356 INFO L226 Difference]: Without dead ends: 4083 [2021-08-21 17:10:22,356 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 73.9ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:10:22,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4083 states. [2021-08-21 17:10:22,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4083 to 4083. [2021-08-21 17:10:22,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4083 states, 3983 states have (on average 2.733868943007783) internal successors, (10889), 4082 states have internal predecessors, (10889), 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) [2021-08-21 17:10:22,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4083 states to 4083 states and 10889 transitions. [2021-08-21 17:10:22,435 INFO L78 Accepts]: Start accepts. Automaton has 4083 states and 10889 transitions. Word has length 64 [2021-08-21 17:10:22,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:10:22,435 INFO L470 AbstractCegarLoop]: Abstraction has 4083 states and 10889 transitions. [2021-08-21 17:10:22,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 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) [2021-08-21 17:10:22,436 INFO L276 IsEmpty]: Start isEmpty. Operand 4083 states and 10889 transitions. [2021-08-21 17:10:22,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-08-21 17:10:22,442 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:10:22,442 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] [2021-08-21 17:10:22,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-21 17:10:22,442 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)] === [2021-08-21 17:10:22,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:10:22,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1095836695, now seen corresponding path program 1 times [2021-08-21 17:10:22,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:10:22,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476401155] [2021-08-21 17:10:22,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:10:22,443 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:10:22,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:10:22,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:10:22,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:10:22,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476401155] [2021-08-21 17:10:22,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476401155] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:10:22,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:10:22,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:10:22,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224167135] [2021-08-21 17:10:22,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:10:22,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:10:22,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:10:22,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:10:22,532 INFO L87 Difference]: Start difference. First operand 4083 states and 10889 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 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) [2021-08-21 17:10:22,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:10:22,701 INFO L93 Difference]: Finished difference Result 5118 states and 13114 transitions. [2021-08-21 17:10:22,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 17:10:22,701 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 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 [2021-08-21 17:10:22,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:10:22,708 INFO L225 Difference]: With dead ends: 5118 [2021-08-21 17:10:22,708 INFO L226 Difference]: Without dead ends: 3358 [2021-08-21 17:10:22,708 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 90.1ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-08-21 17:10:22,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3358 states. [2021-08-21 17:10:22,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3358 to 3358. [2021-08-21 17:10:22,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3358 states, 3262 states have (on average 2.7265481299816066) internal successors, (8894), 3357 states have internal predecessors, (8894), 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) [2021-08-21 17:10:22,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3358 states to 3358 states and 8894 transitions. [2021-08-21 17:10:22,754 INFO L78 Accepts]: Start accepts. Automaton has 3358 states and 8894 transitions. Word has length 65 [2021-08-21 17:10:22,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:10:22,754 INFO L470 AbstractCegarLoop]: Abstraction has 3358 states and 8894 transitions. [2021-08-21 17:10:22,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 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) [2021-08-21 17:10:22,754 INFO L276 IsEmpty]: Start isEmpty. Operand 3358 states and 8894 transitions. [2021-08-21 17:10:22,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-08-21 17:10:22,760 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:10:22,760 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] [2021-08-21 17:10:22,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-21 17:10:22,760 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)] === [2021-08-21 17:10:22,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:10:22,761 INFO L82 PathProgramCache]: Analyzing trace with hash -862132488, now seen corresponding path program 1 times [2021-08-21 17:10:22,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:10:22,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560989752] [2021-08-21 17:10:22,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:10:22,761 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:10:22,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:10:22,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:10:22,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:10:22,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560989752] [2021-08-21 17:10:22,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560989752] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:10:22,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:10:22,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-21 17:10:22,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112235011] [2021-08-21 17:10:22,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 17:10:22,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:10:22,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 17:10:22,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-21 17:10:22,844 INFO L87 Difference]: Start difference. First operand 3358 states and 8894 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 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) [2021-08-21 17:10:22,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:10:22,994 INFO L93 Difference]: Finished difference Result 3331 states and 8266 transitions. [2021-08-21 17:10:22,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-21 17:10:22,995 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 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 66 [2021-08-21 17:10:22,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:10:22,999 INFO L225 Difference]: With dead ends: 3331 [2021-08-21 17:10:23,000 INFO L226 Difference]: Without dead ends: 1987 [2021-08-21 17:10:23,000 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 93.0ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-08-21 17:10:23,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1987 states. [2021-08-21 17:10:23,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1987 to 1987. [2021-08-21 17:10:23,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1987 states, 1915 states have (on average 2.5848563968668405) internal successors, (4950), 1986 states have internal predecessors, (4950), 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) [2021-08-21 17:10:23,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1987 states to 1987 states and 4950 transitions. [2021-08-21 17:10:23,036 INFO L78 Accepts]: Start accepts. Automaton has 1987 states and 4950 transitions. Word has length 66 [2021-08-21 17:10:23,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:10:23,036 INFO L470 AbstractCegarLoop]: Abstraction has 1987 states and 4950 transitions. [2021-08-21 17:10:23,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 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) [2021-08-21 17:10:23,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1987 states and 4950 transitions. [2021-08-21 17:10:23,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-08-21 17:10:23,040 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:10:23,040 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, 1] [2021-08-21 17:10:23,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-21 17:10:23,041 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)] === [2021-08-21 17:10:23,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:10:23,041 INFO L82 PathProgramCache]: Analyzing trace with hash -460602129, now seen corresponding path program 1 times [2021-08-21 17:10:23,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:10:23,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735672576] [2021-08-21 17:10:23,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:10:23,042 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:10:23,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:10:23,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:10:23,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:10:23,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735672576] [2021-08-21 17:10:23,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735672576] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:10:23,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:10:23,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-21 17:10:23,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227204420] [2021-08-21 17:10:23,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-21 17:10:23,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:10:23,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-21 17:10:23,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-21 17:10:23,148 INFO L87 Difference]: Start difference. First operand 1987 states and 4950 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 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) [2021-08-21 17:10:23,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:10:23,315 INFO L93 Difference]: Finished difference Result 1447 states and 3284 transitions. [2021-08-21 17:10:23,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-21 17:10:23,316 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 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 68 [2021-08-21 17:10:23,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:10:23,318 INFO L225 Difference]: With dead ends: 1447 [2021-08-21 17:10:23,318 INFO L226 Difference]: Without dead ends: 726 [2021-08-21 17:10:23,319 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 121.6ms TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2021-08-21 17:10:23,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2021-08-21 17:10:23,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 726. [2021-08-21 17:10:23,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 699 states have (on average 2.1945636623748213) internal successors, (1534), 725 states have internal predecessors, (1534), 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) [2021-08-21 17:10:23,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 1534 transitions. [2021-08-21 17:10:23,331 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 1534 transitions. Word has length 68 [2021-08-21 17:10:23,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:10:23,331 INFO L470 AbstractCegarLoop]: Abstraction has 726 states and 1534 transitions. [2021-08-21 17:10:23,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 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) [2021-08-21 17:10:23,332 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 1534 transitions. [2021-08-21 17:10:23,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-08-21 17:10:23,333 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:10:23,333 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, 1, 1, 1] [2021-08-21 17:10:23,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-21 17:10:23,333 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 17:10:23,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:10:23,334 INFO L82 PathProgramCache]: Analyzing trace with hash 2065332408, now seen corresponding path program 1 times [2021-08-21 17:10:23,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:10:23,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842651618] [2021-08-21 17:10:23,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:10:23,334 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:10:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:10:23,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:10:23,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:10:23,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842651618] [2021-08-21 17:10:23,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842651618] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:10:23,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:10:23,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:10:23,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338280938] [2021-08-21 17:10:23,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:10:23,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:10:23,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:10:23,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:10:23,424 INFO L87 Difference]: Start difference. First operand 726 states and 1534 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 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) [2021-08-21 17:10:23,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:10:23,493 INFO L93 Difference]: Finished difference Result 618 states and 1318 transitions. [2021-08-21 17:10:23,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-21 17:10:23,493 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 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 70 [2021-08-21 17:10:23,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:10:23,493 INFO L225 Difference]: With dead ends: 618 [2021-08-21 17:10:23,494 INFO L226 Difference]: Without dead ends: 0 [2021-08-21 17:10:23,494 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 79.0ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:10:23,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-21 17:10:23,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-21 17:10:23,494 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) [2021-08-21 17:10:23,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-21 17:10:23,495 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 70 [2021-08-21 17:10:23,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:10:23,495 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-21 17:10:23,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 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) [2021-08-21 17:10:23,495 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-21 17:10:23,495 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-21 17:10:23,498 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-21 17:10:23,498 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-21 17:10:23,498 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-21 17:10:23,498 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-08-21 17:10:23,498 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION [2021-08-21 17:10:23,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-21 17:10:23,502 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-21 17:10:23,502 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-21 17:10:23,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 05:10:23 BasicIcfg [2021-08-21 17:10:23,504 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-21 17:10:23,505 INFO L168 Benchmark]: Toolchain (without parser) took 12985.16 ms. Allocated memory was 178.3 MB in the beginning and 4.0 GB in the end (delta: 3.8 GB). Free memory was 141.9 MB in the beginning and 3.2 GB in the end (delta: -3.1 GB). Peak memory consumption was 753.2 MB. Max. memory is 8.0 GB. [2021-08-21 17:10:23,505 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 178.3 MB. Free memory is still 160.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-21 17:10:23,505 INFO L168 Benchmark]: CACSL2BoogieTranslator took 419.44 ms. Allocated memory is still 178.3 MB. Free memory was 141.6 MB in the beginning and 150.8 MB in the end (delta: -9.2 MB). Peak memory consumption was 11.9 MB. Max. memory is 8.0 GB. [2021-08-21 17:10:23,506 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.90 ms. Allocated memory is still 178.3 MB. Free memory was 150.3 MB in the beginning and 148.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-21 17:10:23,506 INFO L168 Benchmark]: Boogie Preprocessor took 19.49 ms. Allocated memory is still 178.3 MB. Free memory was 148.7 MB in the beginning and 147.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-21 17:10:23,506 INFO L168 Benchmark]: RCFGBuilder took 619.02 ms. Allocated memory is still 178.3 MB. Free memory was 147.1 MB in the beginning and 121.4 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. [2021-08-21 17:10:23,507 INFO L168 Benchmark]: TraceAbstraction took 11867.34 ms. Allocated memory was 178.3 MB in the beginning and 4.0 GB in the end (delta: 3.8 GB). Free memory was 120.9 MB in the beginning and 3.2 GB in the end (delta: -3.1 GB). Peak memory consumption was 731.9 MB. Max. memory is 8.0 GB. [2021-08-21 17:10:23,508 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 178.3 MB. Free memory is still 160.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 419.44 ms. Allocated memory is still 178.3 MB. Free memory was 141.6 MB in the beginning and 150.8 MB in the end (delta: -9.2 MB). Peak memory consumption was 11.9 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 50.90 ms. Allocated memory is still 178.3 MB. Free memory was 150.3 MB in the beginning and 148.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 19.49 ms. Allocated memory is still 178.3 MB. Free memory was 148.7 MB in the beginning and 147.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 619.02 ms. Allocated memory is still 178.3 MB. Free memory was 147.1 MB in the beginning and 121.4 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 11867.34 ms. Allocated memory was 178.3 MB in the beginning and 4.0 GB in the end (delta: 3.8 GB). Free memory was 120.9 MB in the beginning and 3.2 GB in the end (delta: -3.1 GB). Peak memory consumption was 731.9 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: 134535, positive: 130677, positive conditional: 130677, positive unconditional: 0, negative: 3858, negative conditional: 3858, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 134076, positive: 130677, positive conditional: 0, positive unconditional: 130677, negative: 3399, negative conditional: 0, negative unconditional: 3399, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 985, positive: 962, positive conditional: 0, positive unconditional: 962, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 985, positive: 955, positive conditional: 0, positive unconditional: 955, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 30, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 86, positive: 27, positive conditional: 0, positive unconditional: 27, negative: 59, negative conditional: 0, negative unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 134076, positive: 129715, positive conditional: 0, positive unconditional: 129715, negative: 3376, negative conditional: 0, negative unconditional: 3376, unknown: 985, unknown conditional: 0, unknown unconditional: 985] , Statistics on independence cache: Total cache size (in pairs): 985, Positive cache size: 962, Positive conditional cache size: 0, Positive unconditional cache size: 962, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Independence queries for same thread: 459 - 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 with 1 thread instances CFG has 9 procedures, 127 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 11749.8ms, OverallIterations: 13, TraceHistogramMax: 1, EmptinessCheckTime: 354.6ms, AutomataDifference: 4166.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2010.7ms, PartialOrderReductionTime: 1997.1ms, HoareTripleCheckerStatistics: 1544 SDtfs, 2585 SDslu, 4865 SDs, 0 SdLazy, 700 SolverSat, 147 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 649.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 1717.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=28883occurred in iteration=0, InterpolantAutomatonStates: 143, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 3038.8ms AutomataMinimizationTime, 13 MinimizatonAttempts, 26488 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 44.3ms SsaConstructionTime, 247.9ms SatisfiabilityAnalysisTime, 1535.9ms InterpolantComputationTime, 815 NumberOfCodeBlocks, 815 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 802 ConstructedInterpolants, 0 QuantifiedInterpolants, 2776 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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! [2021-08-21 17:10:23,540 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...