/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/thin002_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-8a14012e553caa636f65c1137831746b6d9875cd-8a14012 [2021-08-06 19:07:20,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-06 19:07:20,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-06 19:07:20,158 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-06 19:07:20,174 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-06 19:07:20,175 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-06 19:07:20,176 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-06 19:07:20,181 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-06 19:07:20,182 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-06 19:07:20,182 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-06 19:07:20,184 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-06 19:07:20,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-06 19:07:20,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-06 19:07:20,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-06 19:07:20,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-06 19:07:20,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-06 19:07:20,197 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-06 19:07:20,204 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-06 19:07:20,205 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-06 19:07:20,205 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-06 19:07:20,206 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf [2021-08-06 19:07:20,233 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-06 19:07:20,233 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-06 19:07:20,236 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-06 19:07:20,236 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-06 19:07:20,236 INFO L138 SettingsManager]: * Use SBE=true [2021-08-06 19:07:20,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-06 19:07:20,236 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-06 19:07:20,236 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-06 19:07:20,237 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-06 19:07:20,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-06 19:07:20,237 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-06 19:07:20,237 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-06 19:07:20,238 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-06 19:07:20,238 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-06 19:07:20,238 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-06 19:07:20,238 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-06 19:07:20,238 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-06 19:07:20,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-06 19:07:20,238 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-06 19:07:20,238 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-06 19:07:20,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-06 19:07:20,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 19:07:20,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-06 19:07:20,239 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-06 19:07:20,239 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-06 19:07:20,239 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-06 19:07:20,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-06 19:07:20,239 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-06 19:07:20,239 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-06 19:07:20,239 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-08-06 19:07:20,239 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-06 19:07:20,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-06 19:07:20,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-06 19:07:20,550 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-06 19:07:20,551 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-06 19:07:20,551 INFO L275 PluginConnector]: CDTParser initialized [2021-08-06 19:07:20,552 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.opt.i [2021-08-06 19:07:20,615 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/441c9cb52/7ead82edde804b988f2135e6929d1482/FLAG471544503 [2021-08-06 19:07:20,987 INFO L306 CDTParser]: Found 1 translation units. [2021-08-06 19:07:20,987 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_pso.opt.i [2021-08-06 19:07:21,005 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/441c9cb52/7ead82edde804b988f2135e6929d1482/FLAG471544503 [2021-08-06 19:07:21,328 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/441c9cb52/7ead82edde804b988f2135e6929d1482 [2021-08-06 19:07:21,330 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-06 19:07:21,331 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-06 19:07:21,333 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-06 19:07:21,333 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-06 19:07:21,336 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-06 19:07:21,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.08 07:07:21" (1/1) ... [2021-08-06 19:07:21,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ef6168a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:07:21, skipping insertion in model container [2021-08-06 19:07:21,338 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.08 07:07:21" (1/1) ... [2021-08-06 19:07:21,342 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-06 19:07:21,387 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-06 19:07:21,515 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_pso.opt.i[949,962] [2021-08-06 19:07:21,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-06 19:07:21,701 INFO L203 MainTranslator]: Completed pre-run [2021-08-06 19:07:21,710 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_pso.opt.i[949,962] [2021-08-06 19:07:21,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-06 19:07:21,774 INFO L208 MainTranslator]: Completed translation [2021-08-06 19:07:21,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:07:21 WrapperNode [2021-08-06 19:07:21,775 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-06 19:07:21,776 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-06 19:07:21,776 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-06 19:07:21,776 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-06 19:07:21,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:07:21" (1/1) ... [2021-08-06 19:07:21,809 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:07:21" (1/1) ... [2021-08-06 19:07:21,830 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-06 19:07:21,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-06 19:07:21,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-06 19:07:21,832 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-06 19:07:21,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:07:21" (1/1) ... [2021-08-06 19:07:21,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:07:21" (1/1) ... [2021-08-06 19:07:21,853 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:07:21" (1/1) ... [2021-08-06 19:07:21,853 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:07:21" (1/1) ... [2021-08-06 19:07:21,857 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:07:21" (1/1) ... [2021-08-06 19:07:21,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:07:21" (1/1) ... [2021-08-06 19:07:21,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:07:21" (1/1) ... [2021-08-06 19:07:21,862 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-06 19:07:21,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-06 19:07:21,863 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-06 19:07:21,863 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-06 19:07:21,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:07:21" (1/1) ... [2021-08-06 19:07:21,880 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 19:07:21,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 19:07:21,895 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-06 19:07:21,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-06 19:07:21,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-06 19:07:21,953 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-06 19:07:21,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-06 19:07:21,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-06 19:07:21,954 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-06 19:07:21,954 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-06 19:07:21,954 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-06 19:07:21,955 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-06 19:07:21,955 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-06 19:07:21,955 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-06 19:07:21,955 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-08-06 19:07:21,955 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-08-06 19:07:21,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-06 19:07:21,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-06 19:07:21,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-06 19:07:21,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-06 19:07:21,957 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-06 19:07:22,301 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-06 19:07:22,302 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-06 19:07:22,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 07:07:22 BoogieIcfgContainer [2021-08-06 19:07:22,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-06 19:07:22,304 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-06 19:07:22,304 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-06 19:07:22,306 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-06 19:07:22,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.08 07:07:21" (1/3) ... [2021-08-06 19:07:22,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3de52942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.08 07:07:22, skipping insertion in model container [2021-08-06 19:07:22,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:07:21" (2/3) ... [2021-08-06 19:07:22,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3de52942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.08 07:07:22, skipping insertion in model container [2021-08-06 19:07:22,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 07:07:22" (3/3) ... [2021-08-06 19:07:22,308 INFO L111 eAbstractionObserver]: Analyzing ICFG thin002_pso.opt.i [2021-08-06 19:07:22,311 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-06 19:07:22,311 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-06 19:07:22,311 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-06 19:07:22,311 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-06 19:07:22,350 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,351 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,351 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,351 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,351 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,351 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,351 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,351 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,352 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,352 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,352 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,352 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,353 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,353 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,353 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,353 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,353 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,354 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,354 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,354 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,354 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,355 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,355 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,355 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,355 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,355 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,356 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,356 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,356 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,356 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,357 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,357 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,357 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,357 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,357 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,357 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,358 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,358 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,358 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,359 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,359 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,359 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,359 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,359 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,360 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,360 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,360 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,360 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,362 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,362 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,362 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,362 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,376 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,377 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,377 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,377 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,379 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,379 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,379 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,379 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,380 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,380 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,381 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,381 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:07:22,382 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-06 19:07:22,417 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-08-06 19:07:22,424 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-06 19:07:22,424 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-08-06 19:07:24,855 INFO L276 IsEmpty]: Start isEmpty. Operand has 38833 states, 33289 states have (on average 2.1380035447144703) internal successors, (71172), 38832 states have internal predecessors, (71172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:07:24,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-08-06 19:07:24,899 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:07:24,900 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:07:24,901 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-06 19:07:24,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:07:24,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1205527084, now seen corresponding path program 1 times [2021-08-06 19:07:24,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:07:24,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57309787] [2021-08-06 19:07:24,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:07:24,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:07:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:07:25,414 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:07:25,419 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:07:25,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:07:25,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:07:25,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57309787] [2021-08-06 19:07:25,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57309787] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:07:25,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:07:25,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 19:07:25,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694035024] [2021-08-06 19:07:25,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 19:07:25,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:07:25,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 19:07:25,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-06 19:07:25,621 INFO L87 Difference]: Start difference. First operand has 38833 states, 33289 states have (on average 2.1380035447144703) internal successors, (71172), 38832 states have internal predecessors, (71172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:07:26,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:07:26,364 INFO L93 Difference]: Finished difference Result 44321 states and 83203 transitions. [2021-08-06 19:07:26,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-06 19:07:26,372 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-08-06 19:07:26,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:07:26,479 INFO L225 Difference]: With dead ends: 44321 [2021-08-06 19:07:26,479 INFO L226 Difference]: Without dead ends: 16294 [2021-08-06 19:07:26,480 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 150.4ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-08-06 19:07:26,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16294 states. [2021-08-06 19:07:27,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16294 to 16294. [2021-08-06 19:07:27,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16294 states, 16049 states have (on average 2.394479406816624) internal successors, (38429), 16293 states have internal predecessors, (38429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:07:27,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16294 states to 16294 states and 38429 transitions. [2021-08-06 19:07:27,625 INFO L78 Accepts]: Start accepts. Automaton has 16294 states and 38429 transitions. Word has length 59 [2021-08-06 19:07:27,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:07:27,625 INFO L470 AbstractCegarLoop]: Abstraction has 16294 states and 38429 transitions. [2021-08-06 19:07:27,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:07:27,626 INFO L276 IsEmpty]: Start isEmpty. Operand 16294 states and 38429 transitions. [2021-08-06 19:07:27,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-08-06 19:07:27,644 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:07:27,644 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:07:27,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-06 19:07:27,645 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-06 19:07:27,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:07:27,646 INFO L82 PathProgramCache]: Analyzing trace with hash -91182251, now seen corresponding path program 1 times [2021-08-06 19:07:27,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:07:27,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229116824] [2021-08-06 19:07:27,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:07:27,647 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:07:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:07:27,747 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:07:27,752 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:07:27,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:07:27,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:07:27,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229116824] [2021-08-06 19:07:27,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229116824] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:07:27,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:07:27,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 19:07:27,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236942297] [2021-08-06 19:07:27,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 19:07:27,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:07:27,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 19:07:27,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-06 19:07:27,844 INFO L87 Difference]: Start difference. First operand 16294 states and 38429 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:07:28,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:07:28,535 INFO L93 Difference]: Finished difference Result 21714 states and 52963 transitions. [2021-08-06 19:07:28,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 19:07:28,536 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-08-06 19:07:28,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:07:28,604 INFO L225 Difference]: With dead ends: 21714 [2021-08-06 19:07:28,604 INFO L226 Difference]: Without dead ends: 16414 [2021-08-06 19:07:28,605 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 287.8ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-08-06 19:07:28,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16414 states. [2021-08-06 19:07:28,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16414 to 16006. [2021-08-06 19:07:28,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16006 states, 15761 states have (on average 2.412981409809022) internal successors, (38031), 16005 states have internal predecessors, (38031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:07:29,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16006 states to 16006 states and 38031 transitions. [2021-08-06 19:07:29,025 INFO L78 Accepts]: Start accepts. Automaton has 16006 states and 38031 transitions. Word has length 61 [2021-08-06 19:07:29,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:07:29,026 INFO L470 AbstractCegarLoop]: Abstraction has 16006 states and 38031 transitions. [2021-08-06 19:07:29,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:07:29,026 INFO L276 IsEmpty]: Start isEmpty. Operand 16006 states and 38031 transitions. [2021-08-06 19:07:29,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-08-06 19:07:29,038 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:07:29,038 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:07:29,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-06 19:07:29,039 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-06 19:07:29,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:07:29,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1448624618, now seen corresponding path program 1 times [2021-08-06 19:07:29,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:07:29,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626336646] [2021-08-06 19:07:29,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:07:29,040 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:07:29,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:07:29,109 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:07:29,111 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:07:29,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:07:29,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:07:29,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626336646] [2021-08-06 19:07:29,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626336646] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:07:29,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:07:29,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 19:07:29,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789024588] [2021-08-06 19:07:29,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 19:07:29,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:07:29,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 19:07:29,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-06 19:07:29,235 INFO L87 Difference]: Start difference. First operand 16006 states and 38031 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:07:30,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:07:30,084 INFO L93 Difference]: Finished difference Result 28844 states and 78196 transitions. [2021-08-06 19:07:30,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 19:07:30,085 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-08-06 19:07:30,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:07:30,153 INFO L225 Difference]: With dead ends: 28844 [2021-08-06 19:07:30,153 INFO L226 Difference]: Without dead ends: 19124 [2021-08-06 19:07:30,153 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 491.5ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-08-06 19:07:30,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19124 states. [2021-08-06 19:07:30,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19124 to 14886. [2021-08-06 19:07:30,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14886 states, 14661 states have (on average 2.425209740126867) internal successors, (35556), 14885 states have internal predecessors, (35556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:07:30,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14886 states to 14886 states and 35556 transitions. [2021-08-06 19:07:30,595 INFO L78 Accepts]: Start accepts. Automaton has 14886 states and 35556 transitions. Word has length 63 [2021-08-06 19:07:30,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:07:30,595 INFO L470 AbstractCegarLoop]: Abstraction has 14886 states and 35556 transitions. [2021-08-06 19:07:30,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:07:30,595 INFO L276 IsEmpty]: Start isEmpty. Operand 14886 states and 35556 transitions. [2021-08-06 19:07:30,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-08-06 19:07:30,608 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:07:30,608 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:07:30,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-06 19:07:30,608 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-06 19:07:30,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:07:30,609 INFO L82 PathProgramCache]: Analyzing trace with hash -50639530, now seen corresponding path program 1 times [2021-08-06 19:07:30,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:07:30,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281232176] [2021-08-06 19:07:30,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:07:30,609 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:07:30,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:07:30,652 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:07:30,654 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:07:30,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:07:30,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:07:30,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281232176] [2021-08-06 19:07:30,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281232176] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:07:30,733 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:07:30,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 19:07:30,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778189262] [2021-08-06 19:07:30,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 19:07:30,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:07:30,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 19:07:30,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-06 19:07:30,734 INFO L87 Difference]: Start difference. First operand 14886 states and 35556 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:07:31,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:07:31,069 INFO L93 Difference]: Finished difference Result 16016 states and 40675 transitions. [2021-08-06 19:07:31,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-06 19:07:31,070 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-08-06 19:07:31,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:07:31,098 INFO L225 Difference]: With dead ends: 16016 [2021-08-06 19:07:31,098 INFO L226 Difference]: Without dead ends: 11716 [2021-08-06 19:07:31,098 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 112.9ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-08-06 19:07:31,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11716 states. [2021-08-06 19:07:31,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11716 to 11644. [2021-08-06 19:07:31,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11644 states, 11429 states have (on average 2.4774695948901915) internal successors, (28315), 11643 states have internal predecessors, (28315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:07:31,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11644 states to 11644 states and 28315 transitions. [2021-08-06 19:07:31,295 INFO L78 Accepts]: Start accepts. Automaton has 11644 states and 28315 transitions. Word has length 63 [2021-08-06 19:07:31,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:07:31,296 INFO L470 AbstractCegarLoop]: Abstraction has 11644 states and 28315 transitions. [2021-08-06 19:07:31,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:07:31,296 INFO L276 IsEmpty]: Start isEmpty. Operand 11644 states and 28315 transitions. [2021-08-06 19:07:31,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-08-06 19:07:31,311 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:07:31,311 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] [2021-08-06 19:07:31,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-06 19:07:31,311 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-06 19:07:31,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:07:31,312 INFO L82 PathProgramCache]: Analyzing trace with hash -399007281, now seen corresponding path program 1 times [2021-08-06 19:07:31,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:07:31,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016249085] [2021-08-06 19:07:31,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:07:31,312 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:07:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:07:31,520 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:07:31,521 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:07:31,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:07:31,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:07:31,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016249085] [2021-08-06 19:07:31,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016249085] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:07:31,572 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:07:31,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 19:07:31,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715232588] [2021-08-06 19:07:31,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-06 19:07:31,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:07:31,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-06 19:07:31,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-08-06 19:07:31,573 INFO L87 Difference]: Start difference. First operand 11644 states and 28315 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) [2021-08-06 19:07:31,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:07:31,716 INFO L93 Difference]: Finished difference Result 13482 states and 34038 transitions. [2021-08-06 19:07:31,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-06 19:07:31,716 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 [2021-08-06 19:07:31,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:07:31,736 INFO L225 Difference]: With dead ends: 13482 [2021-08-06 19:07:31,736 INFO L226 Difference]: Without dead ends: 8410 [2021-08-06 19:07:31,737 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 93.2ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-08-06 19:07:31,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8410 states. [2021-08-06 19:07:31,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8410 to 8410. [2021-08-06 19:07:31,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8410 states, 8270 states have (on average 2.484764207980653) internal successors, (20549), 8409 states have internal predecessors, (20549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:07:31,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8410 states to 8410 states and 20549 transitions. [2021-08-06 19:07:31,974 INFO L78 Accepts]: Start accepts. Automaton has 8410 states and 20549 transitions. Word has length 66 [2021-08-06 19:07:31,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:07:31,974 INFO L470 AbstractCegarLoop]: Abstraction has 8410 states and 20549 transitions. [2021-08-06 19:07:31,974 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) [2021-08-06 19:07:31,974 INFO L276 IsEmpty]: Start isEmpty. Operand 8410 states and 20549 transitions. [2021-08-06 19:07:31,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-08-06 19:07:31,985 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:07:31,985 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] [2021-08-06 19:07:31,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-06 19:07:31,986 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-06 19:07:31,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:07:31,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1390715859, now seen corresponding path program 1 times [2021-08-06 19:07:31,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:07:31,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333090240] [2021-08-06 19:07:31,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:07:31,986 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:07:31,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:07:32,019 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:07:32,021 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:07:32,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:07:32,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:07:32,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333090240] [2021-08-06 19:07:32,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333090240] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:07:32,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:07:32,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 19:07:32,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94769898] [2021-08-06 19:07:32,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 19:07:32,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:07:32,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 19:07:32,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-06 19:07:32,067 INFO L87 Difference]: Start difference. First operand 8410 states and 20549 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 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) [2021-08-06 19:07:32,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:07:32,165 INFO L93 Difference]: Finished difference Result 9290 states and 24220 transitions. [2021-08-06 19:07:32,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-06 19:07:32,165 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 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 [2021-08-06 19:07:32,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:07:32,180 INFO L225 Difference]: With dead ends: 9290 [2021-08-06 19:07:32,180 INFO L226 Difference]: Without dead ends: 6794 [2021-08-06 19:07:32,181 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 68.1ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-08-06 19:07:32,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6794 states. [2021-08-06 19:07:32,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6794 to 6794. [2021-08-06 19:07:32,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6794 states, 6694 states have (on average 2.5268897520167313) internal successors, (16915), 6793 states have internal predecessors, (16915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:07:32,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6794 states to 6794 states and 16915 transitions. [2021-08-06 19:07:32,416 INFO L78 Accepts]: Start accepts. Automaton has 6794 states and 16915 transitions. Word has length 66 [2021-08-06 19:07:32,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:07:32,417 INFO L470 AbstractCegarLoop]: Abstraction has 6794 states and 16915 transitions. [2021-08-06 19:07:32,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 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) [2021-08-06 19:07:32,417 INFO L276 IsEmpty]: Start isEmpty. Operand 6794 states and 16915 transitions. [2021-08-06 19:07:32,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-08-06 19:07:32,425 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:07:32,425 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] [2021-08-06 19:07:32,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-06 19:07:32,425 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-06 19:07:32,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:07:32,426 INFO L82 PathProgramCache]: Analyzing trace with hash -467168180, now seen corresponding path program 1 times [2021-08-06 19:07:32,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:07:32,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460694886] [2021-08-06 19:07:32,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:07:32,426 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:07:32,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:07:32,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:07:32,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:07:32,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460694886] [2021-08-06 19:07:32,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460694886] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:07:32,504 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:07:32,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 19:07:32,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657410166] [2021-08-06 19:07:32,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 19:07:32,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:07:32,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 19:07:32,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-06 19:07:32,506 INFO L87 Difference]: Start difference. First operand 6794 states and 16915 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 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) [2021-08-06 19:07:32,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:07:32,641 INFO L93 Difference]: Finished difference Result 10354 states and 26316 transitions. [2021-08-06 19:07:32,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-06 19:07:32,647 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 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 [2021-08-06 19:07:32,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:07:32,661 INFO L225 Difference]: With dead ends: 10354 [2021-08-06 19:07:32,662 INFO L226 Difference]: Without dead ends: 5134 [2021-08-06 19:07:32,662 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 91.5ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-08-06 19:07:32,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5134 states. [2021-08-06 19:07:32,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5134 to 5134. [2021-08-06 19:07:32,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5134 states, 5054 states have (on average 2.6133755441234667) internal successors, (13208), 5133 states have internal predecessors, (13208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:07:32,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5134 states to 5134 states and 13208 transitions. [2021-08-06 19:07:32,756 INFO L78 Accepts]: Start accepts. Automaton has 5134 states and 13208 transitions. Word has length 68 [2021-08-06 19:07:32,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:07:32,757 INFO L470 AbstractCegarLoop]: Abstraction has 5134 states and 13208 transitions. [2021-08-06 19:07:32,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 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) [2021-08-06 19:07:32,757 INFO L276 IsEmpty]: Start isEmpty. Operand 5134 states and 13208 transitions. [2021-08-06 19:07:32,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-08-06 19:07:32,766 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:07:32,766 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] [2021-08-06 19:07:32,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-06 19:07:32,766 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-06 19:07:32,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:07:32,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1710960288, now seen corresponding path program 1 times [2021-08-06 19:07:32,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:07:32,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301158699] [2021-08-06 19:07:32,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:07:32,768 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:07:32,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:07:32,843 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:07:32,845 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:07:32,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:07:32,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:07:32,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301158699] [2021-08-06 19:07:32,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301158699] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:07:32,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:07:32,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 19:07:32,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637019015] [2021-08-06 19:07:32,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-06 19:07:32,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:07:32,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-06 19:07:32,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-08-06 19:07:32,906 INFO L87 Difference]: Start difference. First operand 5134 states and 13208 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:07:33,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:07:33,134 INFO L93 Difference]: Finished difference Result 6694 states and 18043 transitions. [2021-08-06 19:07:33,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-06 19:07:33,134 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 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 69 [2021-08-06 19:07:33,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:07:33,139 INFO L225 Difference]: With dead ends: 6694 [2021-08-06 19:07:33,139 INFO L226 Difference]: Without dead ends: 2374 [2021-08-06 19:07:33,140 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 208.4ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-08-06 19:07:33,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2374 states. [2021-08-06 19:07:33,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2374 to 2374. [2021-08-06 19:07:33,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2374 states, 2294 states have (on average 3.081952920662598) internal successors, (7070), 2373 states have internal predecessors, (7070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:07:33,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 7070 transitions. [2021-08-06 19:07:33,175 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 7070 transitions. Word has length 69 [2021-08-06 19:07:33,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:07:33,175 INFO L470 AbstractCegarLoop]: Abstraction has 2374 states and 7070 transitions. [2021-08-06 19:07:33,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:07:33,176 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 7070 transitions. [2021-08-06 19:07:33,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-08-06 19:07:33,178 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:07:33,178 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] [2021-08-06 19:07:33,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-06 19:07:33,179 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-06 19:07:33,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:07:33,179 INFO L82 PathProgramCache]: Analyzing trace with hash -969664838, now seen corresponding path program 1 times [2021-08-06 19:07:33,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:07:33,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188228693] [2021-08-06 19:07:33,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:07:33,179 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:07:33,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:07:33,213 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:07:33,215 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:07:33,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:07:33,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:07:33,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188228693] [2021-08-06 19:07:33,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188228693] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:07:33,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:07:33,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 19:07:33,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856455584] [2021-08-06 19:07:33,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-06 19:07:33,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:07:33,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-06 19:07:33,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-08-06 19:07:33,266 INFO L87 Difference]: Start difference. First operand 2374 states and 7070 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 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) [2021-08-06 19:07:33,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:07:33,350 INFO L93 Difference]: Finished difference Result 1894 states and 5748 transitions. [2021-08-06 19:07:33,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-06 19:07:33,351 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 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 [2021-08-06 19:07:33,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:07:33,351 INFO L225 Difference]: With dead ends: 1894 [2021-08-06 19:07:33,351 INFO L226 Difference]: Without dead ends: 0 [2021-08-06 19:07:33,351 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 89.3ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-08-06 19:07:33,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-06 19:07:33,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-06 19:07:33,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:07:33,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-06 19:07:33,352 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 70 [2021-08-06 19:07:33,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:07:33,352 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-06 19:07:33,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 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) [2021-08-06 19:07:33,352 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-06 19:07:33,352 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-06 19:07:33,354 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-06 19:07:33,354 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-06 19:07:33,354 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-06 19:07:33,354 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-08-06 19:07:33,354 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION [2021-08-06 19:07:33,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-06 19:07:33,357 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-06 19:07:33,357 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-06 19:07:33,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.08 07:07:33 BasicIcfg [2021-08-06 19:07:33,358 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-06 19:07:33,359 INFO L168 Benchmark]: Toolchain (without parser) took 12027.21 ms. Allocated memory was 127.9 MB in the beginning and 4.6 GB in the end (delta: 4.5 GB). Free memory was 90.5 MB in the beginning and 4.0 GB in the end (delta: -3.9 GB). Peak memory consumption was 593.0 MB. Max. memory is 8.0 GB. [2021-08-06 19:07:33,359 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 127.9 MB. Free memory is still 108.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-06 19:07:33,359 INFO L168 Benchmark]: CACSL2BoogieTranslator took 442.09 ms. Allocated memory was 127.9 MB in the beginning and 170.9 MB in the end (delta: 43.0 MB). Free memory was 90.3 MB in the beginning and 145.3 MB in the end (delta: -55.0 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2021-08-06 19:07:33,359 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.53 ms. Allocated memory is still 170.9 MB. Free memory was 145.3 MB in the beginning and 143.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-06 19:07:33,359 INFO L168 Benchmark]: Boogie Preprocessor took 30.59 ms. Allocated memory is still 170.9 MB. Free memory was 143.6 MB in the beginning and 141.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-06 19:07:33,359 INFO L168 Benchmark]: RCFGBuilder took 440.82 ms. Allocated memory is still 170.9 MB. Free memory was 141.8 MB in the beginning and 115.6 MB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. [2021-08-06 19:07:33,359 INFO L168 Benchmark]: TraceAbstraction took 11053.89 ms. Allocated memory was 170.9 MB in the beginning and 4.6 GB in the end (delta: 4.5 GB). Free memory was 114.9 MB in the beginning and 4.0 GB in the end (delta: -3.9 GB). Peak memory consumption was 574.4 MB. Max. memory is 8.0 GB. [2021-08-06 19:07:33,360 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 127.9 MB. Free memory is still 108.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 442.09 ms. Allocated memory was 127.9 MB in the beginning and 170.9 MB in the end (delta: 43.0 MB). Free memory was 90.3 MB in the beginning and 145.3 MB in the end (delta: -55.0 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 54.53 ms. Allocated memory is still 170.9 MB. Free memory was 145.3 MB in the beginning and 143.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.59 ms. Allocated memory is still 170.9 MB. Free memory was 143.6 MB in the beginning and 141.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 440.82 ms. Allocated memory is still 170.9 MB. Free memory was 141.8 MB in the beginning and 115.6 MB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 11053.89 ms. Allocated memory was 170.9 MB in the beginning and 4.6 GB in the end (delta: 4.5 GB). Free memory was 114.9 MB in the beginning and 4.0 GB in the end (delta: -3.9 GB). Peak memory consumption was 574.4 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: 184958, positive: 180850, positive conditional: 180850, positive unconditional: 0, negative: 4108, negative conditional: 4108, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 184421, positive: 180850, positive conditional: 0, positive unconditional: 180850, negative: 3571, negative conditional: 0, negative unconditional: 3571, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1119, positive: 1099, positive conditional: 0, positive unconditional: 1099, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1119, positive: 1090, positive conditional: 0, positive unconditional: 1090, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 29, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 66, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 184421, positive: 179751, positive conditional: 0, positive unconditional: 179751, negative: 3551, negative conditional: 0, negative unconditional: 3551, unknown: 1119, unknown conditional: 0, unknown unconditional: 1119] , Statistics on independence cache: Total cache size (in pairs): 1119, Positive cache size: 1099, Positive conditional cache size: 0, Positive unconditional cache size: 1099, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, Independence queries for same thread: 537 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 9 procedures, 134 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 10940.6ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 287.2ms, AutomataDifference: 3735.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2274.8ms, PartialOrderReductionTime: 2259.5ms, HoareTripleCheckerStatistics: 1163 SDtfs, 1887 SDslu, 3847 SDs, 0 SdLazy, 295 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 330.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 133 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 1593.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=38833occurred in iteration=0, InterpolantAutomatonStates: 105, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 2795.8ms AutomataMinimizationTime, 9 MinimizatonAttempts, 4718 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 27.1ms SsaConstructionTime, 431.2ms SatisfiabilityAnalysisTime, 1234.0ms InterpolantComputationTime, 585 NumberOfCodeBlocks, 585 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 576 ConstructedInterpolants, 0 QuantifiedInterpolants, 2372 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-06 19:07:33,398 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...