/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/safe000_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-87fd7473a0bda1db0ad7f77f2116346063730f21-87fd747 [2021-08-21 17:07:34,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-21 17:07:34,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-21 17:07:34,513 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-21 17:07:34,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-21 17:07:34,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-21 17:07:34,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-21 17:07:34,568 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf [2021-08-21 17:07:34,597 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-21 17:07:34,597 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-21 17:07:34,600 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-21 17:07:34,600 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-21 17:07:34,600 INFO L138 SettingsManager]: * Use SBE=true [2021-08-21 17:07:34,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-21 17:07:34,600 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-21 17:07:34,600 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-21 17:07:34,600 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-21 17:07:34,601 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-21 17:07:34,601 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-21 17:07:34,601 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-21 17:07:34,601 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-21 17:07:34,602 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-21 17:07:34,602 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-21 17:07:34,602 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-21 17:07:34,602 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-21 17:07:34,602 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-21 17:07:34,602 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-21 17:07:34,602 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-21 17:07:34,602 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-21 17:07:34,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 17:07:34,603 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-21 17:07:34,603 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-21 17:07:34,603 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-21 17:07:34,603 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-21 17:07:34,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-21 17:07:34,603 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-21 17:07:34,603 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-21 17:07:34,603 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-08-21 17:07:34,603 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-21 17:07:34,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-21 17:07:34,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-21 17:07:34,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-21 17:07:34,872 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-21 17:07:34,873 INFO L275 PluginConnector]: CDTParser initialized [2021-08-21 17:07:34,874 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe000_pso.opt.i [2021-08-21 17:07:34,925 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca6142731/d9fd252585b74390891d46d238fe024e/FLAG3b25b8ba2 [2021-08-21 17:07:35,431 INFO L306 CDTParser]: Found 1 translation units. [2021-08-21 17:07:35,432 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_pso.opt.i [2021-08-21 17:07:35,451 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca6142731/d9fd252585b74390891d46d238fe024e/FLAG3b25b8ba2 [2021-08-21 17:07:35,948 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca6142731/d9fd252585b74390891d46d238fe024e [2021-08-21 17:07:35,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-21 17:07:35,951 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-21 17:07:35,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-21 17:07:35,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-21 17:07:35,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-21 17:07:35,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:07:35" (1/1) ... [2021-08-21 17:07:35,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@277fe0c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:07:35, skipping insertion in model container [2021-08-21 17:07:35,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:07:35" (1/1) ... [2021-08-21 17:07:35,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-21 17:07:35,993 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-21 17:07:36,084 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_pso.opt.i[949,962] [2021-08-21 17:07:36,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-21 17:07:36,252 INFO L203 MainTranslator]: Completed pre-run [2021-08-21 17:07:36,262 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_pso.opt.i[949,962] [2021-08-21 17:07:36,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-21 17:07:36,320 INFO L208 MainTranslator]: Completed translation [2021-08-21 17:07:36,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:07:36 WrapperNode [2021-08-21 17:07:36,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-21 17:07:36,321 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-21 17:07:36,321 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-21 17:07:36,321 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-21 17:07:36,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:07:36" (1/1) ... [2021-08-21 17:07:36,348 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:07:36" (1/1) ... [2021-08-21 17:07:36,365 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-21 17:07:36,365 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-21 17:07:36,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-21 17:07:36,365 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-21 17:07:36,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:07:36" (1/1) ... [2021-08-21 17:07:36,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:07:36" (1/1) ... [2021-08-21 17:07:36,372 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:07:36" (1/1) ... [2021-08-21 17:07:36,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:07:36" (1/1) ... [2021-08-21 17:07:36,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:07:36" (1/1) ... [2021-08-21 17:07:36,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:07:36" (1/1) ... [2021-08-21 17:07:36,377 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:07:36" (1/1) ... [2021-08-21 17:07:36,379 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-21 17:07:36,380 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-21 17:07:36,380 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-21 17:07:36,380 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-21 17:07:36,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:07:36" (1/1) ... [2021-08-21 17:07:36,389 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 17:07:36,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 17:07:36,422 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-21 17:07:36,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-21 17:07:36,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-21 17:07:36,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-21 17:07:36,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-21 17:07:36,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-21 17:07:36,461 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-21 17:07:36,462 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-21 17:07:36,462 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-21 17:07:36,462 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-21 17:07:36,462 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-21 17:07:36,462 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-21 17:07:36,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-21 17:07:36,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-21 17:07:36,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-21 17:07:36,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-21 17:07:36,463 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-21 17:07:36,837 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-21 17:07:36,837 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-21 17:07:36,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:07:36 BoogieIcfgContainer [2021-08-21 17:07:36,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-21 17:07:36,840 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-21 17:07:36,840 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-21 17:07:36,843 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-21 17:07:36,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:07:35" (1/3) ... [2021-08-21 17:07:36,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15aae146 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:07:36, skipping insertion in model container [2021-08-21 17:07:36,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:07:36" (2/3) ... [2021-08-21 17:07:36,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15aae146 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:07:36, skipping insertion in model container [2021-08-21 17:07:36,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:07:36" (3/3) ... [2021-08-21 17:07:36,845 INFO L111 eAbstractionObserver]: Analyzing ICFG safe000_pso.opt.i [2021-08-21 17:07:36,849 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-21 17:07:36,849 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-21 17:07:36,850 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-21 17:07:36,850 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-21 17:07:36,878 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,879 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,879 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,879 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,879 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,879 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,879 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,879 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,879 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,879 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,880 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,880 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,880 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,880 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,880 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,880 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,880 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,880 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,880 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,890 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,894 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,894 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,894 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,894 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,894 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,895 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,895 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,895 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,895 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,895 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,895 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,896 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,896 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,896 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,896 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,896 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,899 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,899 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,899 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,899 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,904 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,904 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,904 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,904 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,906 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,906 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,906 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,906 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:36,908 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-21 17:07:36,939 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-21 17:07:36,943 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-21 17:07:36,943 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-21 17:07:37,493 INFO L276 IsEmpty]: Start isEmpty. Operand has 5559 states, 4768 states have (on average 2.059773489932886) internal successors, (9821), 5558 states have internal predecessors, (9821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:37,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-08-21 17:07:37,514 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:07:37,515 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] [2021-08-21 17:07:37,515 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:07:37,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:07:37,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1061825978, now seen corresponding path program 1 times [2021-08-21 17:07:37,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:07:37,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822616020] [2021-08-21 17:07:37,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:07:37,528 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:07:37,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:07:37,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:07:37,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:07:37,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822616020] [2021-08-21 17:07:37,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822616020] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:07:37,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:07:37,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 17:07:37,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835348868] [2021-08-21 17:07:37,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 17:07:37,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:07:37,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 17:07:37,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-21 17:07:37,929 INFO L87 Difference]: Start difference. First operand has 5559 states, 4768 states have (on average 2.059773489932886) internal successors, (9821), 5558 states have internal predecessors, (9821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:38,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:07:38,159 INFO L93 Difference]: Finished difference Result 6343 states and 11364 transitions. [2021-08-21 17:07:38,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 17:07:38,161 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-08-21 17:07:38,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:07:38,184 INFO L225 Difference]: With dead ends: 6343 [2021-08-21 17:07:38,184 INFO L226 Difference]: Without dead ends: 2382 [2021-08-21 17:07:38,185 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 179.1ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:07:38,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2382 states. [2021-08-21 17:07:38,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2382 to 2382. [2021-08-21 17:07:38,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2382 states, 2347 states have (on average 2.2428632296548785) internal successors, (5264), 2381 states have internal predecessors, (5264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:38,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2382 states to 2382 states and 5264 transitions. [2021-08-21 17:07:38,298 INFO L78 Accepts]: Start accepts. Automaton has 2382 states and 5264 transitions. Word has length 49 [2021-08-21 17:07:38,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:07:38,298 INFO L470 AbstractCegarLoop]: Abstraction has 2382 states and 5264 transitions. [2021-08-21 17:07:38,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:38,298 INFO L276 IsEmpty]: Start isEmpty. Operand 2382 states and 5264 transitions. [2021-08-21 17:07:38,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-08-21 17:07:38,302 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:07:38,302 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] [2021-08-21 17:07:38,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-21 17:07:38,305 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:07:38,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:07:38,311 INFO L82 PathProgramCache]: Analyzing trace with hash 919952583, now seen corresponding path program 1 times [2021-08-21 17:07:38,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:07:38,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570048294] [2021-08-21 17:07:38,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:07:38,312 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:07:38,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:07:38,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:07:38,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:07:38,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570048294] [2021-08-21 17:07:38,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570048294] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:07:38,519 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:07:38,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:07:38,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042940173] [2021-08-21 17:07:38,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:07:38,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:07:38,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:07:38,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:07:38,521 INFO L87 Difference]: Start difference. First operand 2382 states and 5264 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:38,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:07:38,703 INFO L93 Difference]: Finished difference Result 3592 states and 8070 transitions. [2021-08-21 17:07:38,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 17:07:38,704 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-08-21 17:07:38,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:07:38,711 INFO L225 Difference]: With dead ends: 3592 [2021-08-21 17:07:38,711 INFO L226 Difference]: Without dead ends: 1842 [2021-08-21 17:07:38,711 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 145.6ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-08-21 17:07:38,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1842 states. [2021-08-21 17:07:38,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1842 to 1842. [2021-08-21 17:07:38,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1807 states have (on average 2.289983397897067) internal successors, (4138), 1841 states have internal predecessors, (4138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:38,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 4138 transitions. [2021-08-21 17:07:38,744 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 4138 transitions. Word has length 51 [2021-08-21 17:07:38,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:07:38,745 INFO L470 AbstractCegarLoop]: Abstraction has 1842 states and 4138 transitions. [2021-08-21 17:07:38,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:38,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 4138 transitions. [2021-08-21 17:07:38,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-08-21 17:07:38,747 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:07:38,748 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] [2021-08-21 17:07:38,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-21 17:07:38,748 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:07:38,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:07:38,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1080356922, now seen corresponding path program 1 times [2021-08-21 17:07:38,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:07:38,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385531256] [2021-08-21 17:07:38,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:07:38,749 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:07:38,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:07:38,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:07:38,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:07:38,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385531256] [2021-08-21 17:07:38,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385531256] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:07:38,852 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:07:38,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:07:38,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481865865] [2021-08-21 17:07:38,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:07:38,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:07:38,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:07:38,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:07:38,853 INFO L87 Difference]: Start difference. First operand 1842 states and 4138 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:39,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:07:39,043 INFO L93 Difference]: Finished difference Result 3226 states and 7836 transitions. [2021-08-21 17:07:39,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-21 17:07:39,043 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-08-21 17:07:39,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:07:39,048 INFO L225 Difference]: With dead ends: 3226 [2021-08-21 17:07:39,048 INFO L226 Difference]: Without dead ends: 1402 [2021-08-21 17:07:39,049 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 146.0ms TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2021-08-21 17:07:39,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1402 states. [2021-08-21 17:07:39,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1402 to 1122. [2021-08-21 17:07:39,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 1087 states have (on average 2.344066237350506) internal successors, (2548), 1121 states have internal predecessors, (2548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:39,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 2548 transitions. [2021-08-21 17:07:39,069 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 2548 transitions. Word has length 54 [2021-08-21 17:07:39,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:07:39,070 INFO L470 AbstractCegarLoop]: Abstraction has 1122 states and 2548 transitions. [2021-08-21 17:07:39,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:39,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 2548 transitions. [2021-08-21 17:07:39,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-08-21 17:07:39,071 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:07:39,071 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] [2021-08-21 17:07:39,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-21 17:07:39,072 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:07:39,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:07:39,073 INFO L82 PathProgramCache]: Analyzing trace with hash -486588876, now seen corresponding path program 1 times [2021-08-21 17:07:39,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:07:39,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939364450] [2021-08-21 17:07:39,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:07:39,074 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:07:39,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:07:39,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:07:39,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:07:39,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939364450] [2021-08-21 17:07:39,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939364450] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:07:39,162 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:07:39,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 17:07:39,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165861291] [2021-08-21 17:07:39,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 17:07:39,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:07:39,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 17:07:39,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-21 17:07:39,163 INFO L87 Difference]: Start difference. First operand 1122 states and 2548 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:39,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:07:39,246 INFO L93 Difference]: Finished difference Result 1262 states and 2986 transitions. [2021-08-21 17:07:39,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 17:07:39,247 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-08-21 17:07:39,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:07:39,250 INFO L225 Difference]: With dead ends: 1262 [2021-08-21 17:07:39,251 INFO L226 Difference]: Without dead ends: 874 [2021-08-21 17:07:39,251 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 75.5ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:07:39,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2021-08-21 17:07:39,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 874. [2021-08-21 17:07:39,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 849 states have (on average 2.354534746760895) internal successors, (1999), 873 states have internal predecessors, (1999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:39,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1999 transitions. [2021-08-21 17:07:39,265 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1999 transitions. Word has length 54 [2021-08-21 17:07:39,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:07:39,266 INFO L470 AbstractCegarLoop]: Abstraction has 874 states and 1999 transitions. [2021-08-21 17:07:39,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:39,266 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1999 transitions. [2021-08-21 17:07:39,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-08-21 17:07:39,268 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:07:39,268 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:07:39,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-21 17:07:39,268 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:07:39,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:07:39,269 INFO L82 PathProgramCache]: Analyzing trace with hash -102745483, now seen corresponding path program 1 times [2021-08-21 17:07:39,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:07:39,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403806224] [2021-08-21 17:07:39,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:07:39,273 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:07:39,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:07:39,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:07:39,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:07:39,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403806224] [2021-08-21 17:07:39,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403806224] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:07:39,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:07:39,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:07:39,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753648762] [2021-08-21 17:07:39,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:07:39,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:07:39,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:07:39,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:07:39,382 INFO L87 Difference]: Start difference. First operand 874 states and 1999 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:39,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:07:39,488 INFO L93 Difference]: Finished difference Result 1052 states and 2461 transitions. [2021-08-21 17:07:39,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 17:07:39,489 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-08-21 17:07:39,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:07:39,491 INFO L225 Difference]: With dead ends: 1052 [2021-08-21 17:07:39,491 INFO L226 Difference]: Without dead ends: 432 [2021-08-21 17:07:39,491 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 102.3ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-08-21 17:07:39,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-08-21 17:07:39,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 432. [2021-08-21 17:07:39,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 412 states have (on average 2.3155339805825244) internal successors, (954), 431 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:39,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 954 transitions. [2021-08-21 17:07:39,498 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 954 transitions. Word has length 56 [2021-08-21 17:07:39,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:07:39,498 INFO L470 AbstractCegarLoop]: Abstraction has 432 states and 954 transitions. [2021-08-21 17:07:39,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:39,498 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 954 transitions. [2021-08-21 17:07:39,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-21 17:07:39,499 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:07:39,499 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:07:39,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-21 17:07:39,499 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:07:39,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:07:39,500 INFO L82 PathProgramCache]: Analyzing trace with hash -516177467, now seen corresponding path program 1 times [2021-08-21 17:07:39,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:07:39,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780096215] [2021-08-21 17:07:39,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:07:39,500 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:07:39,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:07:39,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:07:39,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:07:39,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780096215] [2021-08-21 17:07:39,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780096215] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:07:39,602 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:07:39,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:07:39,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373414421] [2021-08-21 17:07:39,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:07:39,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:07:39,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:07:39,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:07:39,603 INFO L87 Difference]: Start difference. First operand 432 states and 954 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:39,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:07:39,654 INFO L93 Difference]: Finished difference Result 312 states and 670 transitions. [2021-08-21 17:07:39,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-21 17:07:39,655 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-08-21 17:07:39,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:07:39,655 INFO L225 Difference]: With dead ends: 312 [2021-08-21 17:07:39,655 INFO L226 Difference]: Without dead ends: 0 [2021-08-21 17:07:39,655 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 54.0ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:07:39,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-21 17:07:39,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-21 17:07:39,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:39,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-21 17:07:39,656 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2021-08-21 17:07:39,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:07:39,656 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-21 17:07:39,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:39,656 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-21 17:07:39,656 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-21 17:07:39,658 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-21 17:07:39,658 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-21 17:07:39,659 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-21 17:07:39,659 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-08-21 17:07:39,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-21 17:07:39,662 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-21 17:07:39,664 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-21 17:07:39,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 05:07:39 BasicIcfg [2021-08-21 17:07:39,666 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-21 17:07:39,667 INFO L168 Benchmark]: Toolchain (without parser) took 3715.26 ms. Allocated memory was 208.7 MB in the beginning and 267.4 MB in the end (delta: 58.7 MB). Free memory was 171.2 MB in the beginning and 166.5 MB in the end (delta: 4.7 MB). Peak memory consumption was 63.7 MB. Max. memory is 8.0 GB. [2021-08-21 17:07:39,667 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 208.7 MB. Free memory is still 189.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-21 17:07:39,668 INFO L168 Benchmark]: CACSL2BoogieTranslator took 368.11 ms. Allocated memory is still 208.7 MB. Free memory was 171.0 MB in the beginning and 182.0 MB in the end (delta: -11.0 MB). Peak memory consumption was 15.9 MB. Max. memory is 8.0 GB. [2021-08-21 17:07:39,668 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.88 ms. Allocated memory is still 208.7 MB. Free memory was 182.0 MB in the beginning and 180.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-21 17:07:39,670 INFO L168 Benchmark]: Boogie Preprocessor took 13.79 ms. Allocated memory is still 208.7 MB. Free memory was 179.9 MB in the beginning and 178.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-21 17:07:39,672 INFO L168 Benchmark]: RCFGBuilder took 459.32 ms. Allocated memory is still 208.7 MB. Free memory was 178.7 MB in the beginning and 155.3 MB in the end (delta: 23.4 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-08-21 17:07:39,673 INFO L168 Benchmark]: TraceAbstraction took 2825.53 ms. Allocated memory was 208.7 MB in the beginning and 267.4 MB in the end (delta: 58.7 MB). Free memory was 154.7 MB in the beginning and 166.5 MB in the end (delta: -11.8 MB). Peak memory consumption was 46.7 MB. Max. memory is 8.0 GB. [2021-08-21 17:07:39,675 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 208.7 MB. Free memory is still 189.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 368.11 ms. Allocated memory is still 208.7 MB. Free memory was 171.0 MB in the beginning and 182.0 MB in the end (delta: -11.0 MB). Peak memory consumption was 15.9 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 43.88 ms. Allocated memory is still 208.7 MB. Free memory was 182.0 MB in the beginning and 180.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 13.79 ms. Allocated memory is still 208.7 MB. Free memory was 179.9 MB in the beginning and 178.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 459.32 ms. Allocated memory is still 208.7 MB. Free memory was 178.7 MB in the beginning and 155.3 MB in the end (delta: 23.4 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2825.53 ms. Allocated memory was 208.7 MB in the beginning and 267.4 MB in the end (delta: 58.7 MB). Free memory was 154.7 MB in the beginning and 166.5 MB in the end (delta: -11.8 MB). Peak memory consumption was 46.7 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: 18605, positive: 17826, positive conditional: 17826, positive unconditional: 0, negative: 779, negative conditional: 779, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 18524, positive: 17826, positive conditional: 0, positive unconditional: 17826, negative: 698, negative conditional: 0, negative unconditional: 698, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 646, positive: 627, positive conditional: 0, positive unconditional: 627, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 646, positive: 624, positive conditional: 0, positive unconditional: 624, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 22, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 58, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 45, negative conditional: 0, negative unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 18524, positive: 17199, positive conditional: 0, positive unconditional: 17199, negative: 679, negative conditional: 0, negative unconditional: 679, unknown: 646, unknown conditional: 0, unknown unconditional: 646] , Statistics on independence cache: Total cache size (in pairs): 646, Positive cache size: 627, Positive conditional cache size: 0, Positive unconditional cache size: 627, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19, Independence queries for same thread: 81 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 2724.0ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 41.6ms, AutomataDifference: 911.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 538.7ms, PartialOrderReductionTime: 528.1ms, HoareTripleCheckerStatistics: 603 SDtfs, 703 SDslu, 1979 SDs, 0 SdLazy, 194 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 148.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 79 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 702.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5559occurred in iteration=0, InterpolantAutomatonStates: 59, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 177.2ms AutomataMinimizationTime, 6 MinimizatonAttempts, 280 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 22.6ms SsaConstructionTime, 152.8ms SatisfiabilityAnalysisTime, 712.8ms InterpolantComputationTime, 321 NumberOfCodeBlocks, 321 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 315 ConstructedInterpolants, 0 QuantifiedInterpolants, 869 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-21 17:07:39,705 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...