/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/safe013_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-87fd7473a0bda1db0ad7f77f2116346063730f21-87fd747 [2021-08-21 17:09:16,349 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-21 17:09:16,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-21 17:09:16,383 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-21 17:09:16,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-21 17:09:16,399 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-21 17:09:16,401 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-21 17:09:16,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-21 17:09:16,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-21 17:09:16,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-21 17:09:16,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-21 17:09:16,412 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-21 17:09:16,415 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-21 17:09:16,415 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-21 17:09:16,416 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-21 17:09:16,418 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-21 17:09:16,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-21 17:09:16,429 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-21 17:09:16,429 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-21 17:09:16,430 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-21 17:09:16,430 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 17:09:16,459 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-21 17:09:16,459 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-21 17:09:16,461 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-21 17:09:16,462 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-21 17:09:16,462 INFO L138 SettingsManager]: * Use SBE=true [2021-08-21 17:09:16,462 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-21 17:09:16,462 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-21 17:09:16,462 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-21 17:09:16,462 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-21 17:09:16,462 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-21 17:09:16,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-21 17:09:16,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-21 17:09:16,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-21 17:09:16,463 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-21 17:09:16,463 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-21 17:09:16,464 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-21 17:09:16,464 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-21 17:09:16,464 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-21 17:09:16,464 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-21 17:09:16,464 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-21 17:09:16,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-21 17:09:16,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 17:09:16,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-21 17:09:16,465 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-21 17:09:16,465 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-21 17:09:16,465 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-21 17:09:16,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-21 17:09:16,465 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-21 17:09:16,465 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-21 17:09:16,465 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-08-21 17:09:16,465 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-21 17:09:16,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-21 17:09:16,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-21 17:09:16,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-21 17:09:16,738 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-21 17:09:16,739 INFO L275 PluginConnector]: CDTParser initialized [2021-08-21 17:09:16,740 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.oepc.i [2021-08-21 17:09:16,807 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3a6fc90a/78aba770a8074b41bfb27b0e04e83a29/FLAG937e64a83 [2021-08-21 17:09:17,181 INFO L306 CDTParser]: Found 1 translation units. [2021-08-21 17:09:17,182 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe013_tso.oepc.i [2021-08-21 17:09:17,195 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3a6fc90a/78aba770a8074b41bfb27b0e04e83a29/FLAG937e64a83 [2021-08-21 17:09:17,538 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3a6fc90a/78aba770a8074b41bfb27b0e04e83a29 [2021-08-21 17:09:17,540 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-21 17:09:17,542 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-21 17:09:17,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-21 17:09:17,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-21 17:09:17,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-21 17:09:17,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:09:17" (1/1) ... [2021-08-21 17:09:17,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b672a56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:09:17, skipping insertion in model container [2021-08-21 17:09:17,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:09:17" (1/1) ... [2021-08-21 17:09:17,555 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-21 17:09:17,592 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-21 17:09:17,680 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/safe013_tso.oepc.i[950,963] [2021-08-21 17:09:17,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-21 17:09:17,822 INFO L203 MainTranslator]: Completed pre-run [2021-08-21 17:09:17,830 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/safe013_tso.oepc.i[950,963] [2021-08-21 17:09:17,858 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-21 17:09:17,878 INFO L208 MainTranslator]: Completed translation [2021-08-21 17:09:17,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:09:17 WrapperNode [2021-08-21 17:09:17,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-21 17:09:17,880 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-21 17:09:17,880 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-21 17:09:17,880 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-21 17:09:17,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:09:17" (1/1) ... [2021-08-21 17:09:17,893 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:09:17" (1/1) ... [2021-08-21 17:09:17,913 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-21 17:09:17,913 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-21 17:09:17,914 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-21 17:09:17,914 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-21 17:09:17,918 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:09:17" (1/1) ... [2021-08-21 17:09:17,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:09:17" (1/1) ... [2021-08-21 17:09:17,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:09:17" (1/1) ... [2021-08-21 17:09:17,934 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:09:17" (1/1) ... [2021-08-21 17:09:17,937 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:09:17" (1/1) ... [2021-08-21 17:09:17,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:09:17" (1/1) ... [2021-08-21 17:09:17,940 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:09:17" (1/1) ... [2021-08-21 17:09:17,941 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-21 17:09:17,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-21 17:09:17,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-21 17:09:17,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-21 17:09:17,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:09:17" (1/1) ... [2021-08-21 17:09:17,947 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 17:09:17,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 17:09:17,966 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 17:09:17,998 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 17:09:18,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-21 17:09:18,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-21 17:09:18,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-21 17:09:18,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-21 17:09:18,013 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-21 17:09:18,013 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-21 17:09:18,013 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-21 17:09:18,013 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-21 17:09:18,013 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-21 17:09:18,013 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-21 17:09:18,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-21 17:09:18,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-21 17:09:18,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-21 17:09:18,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-21 17:09:18,015 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 17:09:18,362 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-21 17:09:18,362 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-21 17:09:18,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:09:18 BoogieIcfgContainer [2021-08-21 17:09:18,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-21 17:09:18,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-21 17:09:18,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-21 17:09:18,367 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-21 17:09:18,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:09:17" (1/3) ... [2021-08-21 17:09:18,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73be6e2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:09:18, skipping insertion in model container [2021-08-21 17:09:18,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:09:17" (2/3) ... [2021-08-21 17:09:18,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73be6e2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:09:18, skipping insertion in model container [2021-08-21 17:09:18,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:09:18" (3/3) ... [2021-08-21 17:09:18,369 INFO L111 eAbstractionObserver]: Analyzing ICFG safe013_tso.oepc.i [2021-08-21 17:09:18,374 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-21 17:09:18,374 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-21 17:09:18,374 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-21 17:09:18,374 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-21 17:09:18,406 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,407 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,407 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,407 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,407 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,407 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,407 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,407 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,408 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,408 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,408 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,408 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,408 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,408 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,408 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,408 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,409 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,409 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,409 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,409 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,409 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,409 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,409 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,409 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,410 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,410 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,410 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,410 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,410 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,410 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,410 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,410 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,411 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,411 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,411 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,411 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,413 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,413 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,414 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,414 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,418 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,418 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,418 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,421 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,424 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,424 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,424 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,424 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:18,426 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-21 17:09:18,452 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-21 17:09:18,456 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 17:09:18,456 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-21 17:09:18,847 INFO L276 IsEmpty]: Start isEmpty. Operand has 5559 states, 4768 states have (on average 1.9444211409395973) internal successors, (9271), 5558 states have internal predecessors, (9271), 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 17:09:18,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-08-21 17:09:18,869 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:09:18,869 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:09:18,870 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 17:09:18,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:09:18,873 INFO L82 PathProgramCache]: Analyzing trace with hash -2060294953, now seen corresponding path program 1 times [2021-08-21 17:09:18,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:09:18,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765228258] [2021-08-21 17:09:18,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:09:18,880 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:09:19,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:09:19,209 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 17:09:19,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:09:19,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765228258] [2021-08-21 17:09:19,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765228258] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:09:19,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:09:19,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 17:09:19,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830487858] [2021-08-21 17:09:19,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 17:09:19,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:09:19,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 17:09:19,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-21 17:09:19,236 INFO L87 Difference]: Start difference. First operand has 5559 states, 4768 states have (on average 1.9444211409395973) internal successors, (9271), 5558 states have internal predecessors, (9271), 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 17:09:19,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:09:19,559 INFO L93 Difference]: Finished difference Result 6679 states and 11282 transitions. [2021-08-21 17:09:19,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 17:09:19,561 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 17:09:19,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:09:19,607 INFO L225 Difference]: With dead ends: 6679 [2021-08-21 17:09:19,607 INFO L226 Difference]: Without dead ends: 2824 [2021-08-21 17:09:19,608 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 156.9ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:09:19,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2824 states. [2021-08-21 17:09:19,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2824 to 2824. [2021-08-21 17:09:19,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2824 states, 2775 states have (on average 2.077837837837838) internal successors, (5766), 2823 states have internal predecessors, (5766), 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 17:09:19,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2824 states to 2824 states and 5766 transitions. [2021-08-21 17:09:19,757 INFO L78 Accepts]: Start accepts. Automaton has 2824 states and 5766 transitions. Word has length 49 [2021-08-21 17:09:19,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:09:19,758 INFO L470 AbstractCegarLoop]: Abstraction has 2824 states and 5766 transitions. [2021-08-21 17:09:19,758 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 17:09:19,758 INFO L276 IsEmpty]: Start isEmpty. Operand 2824 states and 5766 transitions. [2021-08-21 17:09:19,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-08-21 17:09:19,761 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:09:19,761 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 17:09:19,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-21 17:09:19,762 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 17:09:19,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:09:19,762 INFO L82 PathProgramCache]: Analyzing trace with hash -304953768, now seen corresponding path program 1 times [2021-08-21 17:09:19,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:09:19,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069740193] [2021-08-21 17:09:19,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:09:19,763 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:09:19,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:09:19,926 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 17:09:19,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:09:19,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069740193] [2021-08-21 17:09:19,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069740193] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:09:19,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:09:19,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:09:19,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505684173] [2021-08-21 17:09:19,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:09:19,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:09:19,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:09:19,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:09:19,929 INFO L87 Difference]: Start difference. First operand 2824 states and 5766 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 17:09:20,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:09:20,165 INFO L93 Difference]: Finished difference Result 4210 states and 9428 transitions. [2021-08-21 17:09:20,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-21 17:09:20,165 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 17:09:20,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:09:20,174 INFO L225 Difference]: With dead ends: 4210 [2021-08-21 17:09:20,174 INFO L226 Difference]: Without dead ends: 2294 [2021-08-21 17:09:20,174 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 199.1ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-08-21 17:09:20,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2294 states. [2021-08-21 17:09:20,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2294 to 1804. [2021-08-21 17:09:20,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1804 states, 1769 states have (on average 2.1978518937252685) internal successors, (3888), 1803 states have internal predecessors, (3888), 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 17:09:20,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1804 states to 1804 states and 3888 transitions. [2021-08-21 17:09:20,210 INFO L78 Accepts]: Start accepts. Automaton has 1804 states and 3888 transitions. Word has length 51 [2021-08-21 17:09:20,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:09:20,212 INFO L470 AbstractCegarLoop]: Abstraction has 1804 states and 3888 transitions. [2021-08-21 17:09:20,212 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 17:09:20,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1804 states and 3888 transitions. [2021-08-21 17:09:20,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-08-21 17:09:20,215 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:09:20,215 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] [2021-08-21 17:09:20,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-21 17:09:20,215 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 17:09:20,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:09:20,216 INFO L82 PathProgramCache]: Analyzing trace with hash 154774809, now seen corresponding path program 1 times [2021-08-21 17:09:20,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:09:20,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056041869] [2021-08-21 17:09:20,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:09:20,216 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:09:20,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:09:20,337 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 17:09:20,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:09:20,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056041869] [2021-08-21 17:09:20,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056041869] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:09:20,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:09:20,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:09:20,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995915332] [2021-08-21 17:09:20,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:09:20,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:09:20,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:09:20,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:09:20,339 INFO L87 Difference]: Start difference. First operand 1804 states and 3888 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:09:20,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:09:20,652 INFO L93 Difference]: Finished difference Result 2854 states and 6611 transitions. [2021-08-21 17:09:20,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 17:09:20,652 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-08-21 17:09:20,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:09:20,660 INFO L225 Difference]: With dead ends: 2854 [2021-08-21 17:09:20,660 INFO L226 Difference]: Without dead ends: 1978 [2021-08-21 17:09:20,660 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 238.2ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-08-21 17:09:20,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2021-08-21 17:09:20,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 1664. [2021-08-21 17:09:20,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1664 states, 1629 states have (on average 2.1645181092694905) internal successors, (3526), 1663 states have internal predecessors, (3526), 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 17:09:20,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1664 states to 1664 states and 3526 transitions. [2021-08-21 17:09:20,691 INFO L78 Accepts]: Start accepts. Automaton has 1664 states and 3526 transitions. Word has length 53 [2021-08-21 17:09:20,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:09:20,693 INFO L470 AbstractCegarLoop]: Abstraction has 1664 states and 3526 transitions. [2021-08-21 17:09:20,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:09:20,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1664 states and 3526 transitions. [2021-08-21 17:09:20,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-08-21 17:09:20,696 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:09:20,697 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 17:09:20,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-21 17:09:20,697 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 17:09:20,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:09:20,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1944430973, now seen corresponding path program 1 times [2021-08-21 17:09:20,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:09:20,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076077128] [2021-08-21 17:09:20,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:09:20,699 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:09:20,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:09:20,817 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 17:09:20,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:09:20,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076077128] [2021-08-21 17:09:20,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076077128] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:09:20,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:09:20,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:09:20,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667757068] [2021-08-21 17:09:20,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:09:20,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:09:20,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:09:20,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:09:20,819 INFO L87 Difference]: Start difference. First operand 1664 states and 3526 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 17:09:20,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:09:20,928 INFO L93 Difference]: Finished difference Result 2056 states and 4482 transitions. [2021-08-21 17:09:20,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 17:09:20,928 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 17:09:20,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:09:20,932 INFO L225 Difference]: With dead ends: 2056 [2021-08-21 17:09:20,933 INFO L226 Difference]: Without dead ends: 1152 [2021-08-21 17:09:20,933 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 97.2ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-08-21 17:09:20,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2021-08-21 17:09:20,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 1152. [2021-08-21 17:09:20,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1152 states, 1132 states have (on average 2.1987632508833923) internal successors, (2489), 1151 states have internal predecessors, (2489), 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 17:09:20,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 2489 transitions. [2021-08-21 17:09:20,953 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 2489 transitions. Word has length 54 [2021-08-21 17:09:20,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:09:20,953 INFO L470 AbstractCegarLoop]: Abstraction has 1152 states and 2489 transitions. [2021-08-21 17:09:20,953 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 17:09:20,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 2489 transitions. [2021-08-21 17:09:20,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-08-21 17:09:20,955 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:09:20,955 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 17:09:20,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-21 17:09:20,955 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 17:09:20,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:09:20,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1327123920, now seen corresponding path program 1 times [2021-08-21 17:09:20,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:09:20,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092645082] [2021-08-21 17:09:20,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:09:20,956 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:09:20,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:09:21,027 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 17:09:21,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:09:21,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092645082] [2021-08-21 17:09:21,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092645082] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:09:21,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:09:21,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 17:09:21,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919062764] [2021-08-21 17:09:21,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 17:09:21,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:09:21,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 17:09:21,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-21 17:09:21,029 INFO L87 Difference]: Start difference. First operand 1152 states and 2489 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:09:21,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:09:21,103 INFO L93 Difference]: Finished difference Result 1473 states and 3049 transitions. [2021-08-21 17:09:21,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 17:09:21,104 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-08-21 17:09:21,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:09:21,107 INFO L225 Difference]: With dead ends: 1473 [2021-08-21 17:09:21,107 INFO L226 Difference]: Without dead ends: 1013 [2021-08-21 17:09:21,108 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 54.4ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:09:21,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2021-08-21 17:09:21,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 1013. [2021-08-21 17:09:21,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 993 states have (on average 2.229607250755287) internal successors, (2214), 1012 states have internal predecessors, (2214), 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 17:09:21,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 2214 transitions. [2021-08-21 17:09:21,128 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 2214 transitions. Word has length 56 [2021-08-21 17:09:21,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:09:21,129 INFO L470 AbstractCegarLoop]: Abstraction has 1013 states and 2214 transitions. [2021-08-21 17:09:21,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:09:21,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 2214 transitions. [2021-08-21 17:09:21,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-21 17:09:21,131 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:09:21,131 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 17:09:21,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-21 17:09:21,131 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 17:09:21,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:09:21,131 INFO L82 PathProgramCache]: Analyzing trace with hash -793985995, now seen corresponding path program 1 times [2021-08-21 17:09:21,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:09:21,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798332224] [2021-08-21 17:09:21,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:09:21,132 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:09:21,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:09:21,211 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 17:09:21,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:09:21,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798332224] [2021-08-21 17:09:21,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798332224] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:09:21,211 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:09:21,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:09:21,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529399168] [2021-08-21 17:09:21,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:09:21,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:09:21,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:09:21,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:09:21,213 INFO L87 Difference]: Start difference. First operand 1013 states and 2214 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 17:09:21,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:09:21,300 INFO L93 Difference]: Finished difference Result 971 states and 1991 transitions. [2021-08-21 17:09:21,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 17:09:21,300 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 17:09:21,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:09:21,303 INFO L225 Difference]: With dead ends: 971 [2021-08-21 17:09:21,303 INFO L226 Difference]: Without dead ends: 595 [2021-08-21 17:09:21,303 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 65.4ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-08-21 17:09:21,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2021-08-21 17:09:21,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 594. [2021-08-21 17:09:21,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 576 states have (on average 2.2256944444444446) internal successors, (1282), 593 states have internal predecessors, (1282), 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 17:09:21,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 1282 transitions. [2021-08-21 17:09:21,320 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 1282 transitions. Word has length 57 [2021-08-21 17:09:21,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:09:21,321 INFO L470 AbstractCegarLoop]: Abstraction has 594 states and 1282 transitions. [2021-08-21 17:09:21,321 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 17:09:21,321 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 1282 transitions. [2021-08-21 17:09:21,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-08-21 17:09:21,322 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:09:21,322 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] [2021-08-21 17:09:21,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-21 17:09:21,322 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:09:21,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:09:21,323 INFO L82 PathProgramCache]: Analyzing trace with hash 278386462, now seen corresponding path program 1 times [2021-08-21 17:09:21,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:09:21,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515346766] [2021-08-21 17:09:21,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:09:21,325 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:09:21,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:09:21,439 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 17:09:21,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:09:21,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515346766] [2021-08-21 17:09:21,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515346766] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:09:21,440 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:09:21,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-21 17:09:21,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480762312] [2021-08-21 17:09:21,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 17:09:21,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:09:21,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 17:09:21,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-21 17:09:21,441 INFO L87 Difference]: Start difference. First operand 594 states and 1282 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 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) [2021-08-21 17:09:21,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:09:21,531 INFO L93 Difference]: Finished difference Result 405 states and 748 transitions. [2021-08-21 17:09:21,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-21 17:09:21,532 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 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 [2021-08-21 17:09:21,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:09:21,532 INFO L225 Difference]: With dead ends: 405 [2021-08-21 17:09:21,533 INFO L226 Difference]: Without dead ends: 222 [2021-08-21 17:09:21,533 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 71.9ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-08-21 17:09:21,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-08-21 17:09:21,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 219. [2021-08-21 17:09:21,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 210 states have (on average 1.7714285714285714) internal successors, (372), 218 states have internal predecessors, (372), 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 17:09:21,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 372 transitions. [2021-08-21 17:09:21,536 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 372 transitions. Word has length 59 [2021-08-21 17:09:21,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:09:21,536 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 372 transitions. [2021-08-21 17:09:21,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 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) [2021-08-21 17:09:21,537 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 372 transitions. [2021-08-21 17:09:21,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-08-21 17:09:21,537 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:09:21,537 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:09:21,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-21 17:09:21,537 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:09:21,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:09:21,538 INFO L82 PathProgramCache]: Analyzing trace with hash 993978015, now seen corresponding path program 1 times [2021-08-21 17:09:21,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:09:21,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309620462] [2021-08-21 17:09:21,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:09:21,538 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:09:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:09:21,599 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 17:09:21,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:09:21,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309620462] [2021-08-21 17:09:21,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309620462] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:09:21,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:09:21,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:09:21,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383338389] [2021-08-21 17:09:21,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:09:21,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:09:21,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:09:21,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:09:21,606 INFO L87 Difference]: Start difference. First operand 219 states and 372 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) [2021-08-21 17:09:21,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:09:21,650 INFO L93 Difference]: Finished difference Result 183 states and 312 transitions. [2021-08-21 17:09:21,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-21 17:09:21,650 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 [2021-08-21 17:09:21,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:09:21,651 INFO L225 Difference]: With dead ends: 183 [2021-08-21 17:09:21,651 INFO L226 Difference]: Without dead ends: 0 [2021-08-21 17:09:21,651 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.4ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:09:21,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-21 17:09:21,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-21 17:09:21,651 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 17:09:21,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-21 17:09:21,651 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2021-08-21 17:09:21,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:09:21,651 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-21 17:09:21,652 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) [2021-08-21 17:09:21,652 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-21 17:09:21,652 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-21 17:09:21,654 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-21 17:09:21,655 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-21 17:09:21,655 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-21 17:09:21,655 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-08-21 17:09:21,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-21 17:09:21,659 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-21 17:09:21,659 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-21 17:09:21,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 05:09:21 BasicIcfg [2021-08-21 17:09:21,661 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-21 17:09:21,663 INFO L168 Benchmark]: Toolchain (without parser) took 4119.64 ms. Allocated memory was 184.5 MB in the beginning and 251.7 MB in the end (delta: 67.1 MB). Free memory was 147.8 MB in the beginning and 133.7 MB in the end (delta: 14.2 MB). Peak memory consumption was 82.1 MB. Max. memory is 8.0 GB. [2021-08-21 17:09:21,663 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 184.5 MB. Free memory is still 165.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-21 17:09:21,664 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.90 ms. Allocated memory is still 184.5 MB. Free memory was 147.7 MB in the beginning and 157.8 MB in the end (delta: -10.1 MB). Peak memory consumption was 13.9 MB. Max. memory is 8.0 GB. [2021-08-21 17:09:21,664 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.10 ms. Allocated memory is still 184.5 MB. Free memory was 157.8 MB in the beginning and 155.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-21 17:09:21,664 INFO L168 Benchmark]: Boogie Preprocessor took 28.11 ms. Allocated memory is still 184.5 MB. Free memory was 155.7 MB in the beginning and 154.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-21 17:09:21,664 INFO L168 Benchmark]: RCFGBuilder took 421.78 ms. Allocated memory is still 184.5 MB. Free memory was 154.2 MB in the beginning and 130.0 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-08-21 17:09:21,665 INFO L168 Benchmark]: TraceAbstraction took 3295.60 ms. Allocated memory was 184.5 MB in the beginning and 251.7 MB in the end (delta: 67.1 MB). Free memory was 129.5 MB in the beginning and 133.7 MB in the end (delta: -4.1 MB). Peak memory consumption was 64.0 MB. Max. memory is 8.0 GB. [2021-08-21 17:09:21,666 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 184.5 MB. Free memory is still 165.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 334.90 ms. Allocated memory is still 184.5 MB. Free memory was 147.7 MB in the beginning and 157.8 MB in the end (delta: -10.1 MB). Peak memory consumption was 13.9 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 33.10 ms. Allocated memory is still 184.5 MB. Free memory was 157.8 MB in the beginning and 155.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.11 ms. Allocated memory is still 184.5 MB. Free memory was 155.7 MB in the beginning and 154.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 421.78 ms. Allocated memory is still 184.5 MB. Free memory was 154.2 MB in the beginning and 130.0 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3295.60 ms. Allocated memory was 184.5 MB in the beginning and 251.7 MB in the end (delta: 67.1 MB). Free memory was 129.5 MB in the beginning and 133.7 MB in the end (delta: -4.1 MB). Peak memory consumption was 64.0 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: 18228, positive: 17656, positive conditional: 17656, positive unconditional: 0, negative: 572, negative conditional: 572, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 18152, positive: 17656, positive conditional: 0, positive unconditional: 17656, negative: 496, negative conditional: 0, negative unconditional: 496, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 668, positive: 653, positive conditional: 0, positive unconditional: 653, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 668, positive: 649, positive conditional: 0, positive unconditional: 649, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 19, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 47, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 18152, positive: 17003, positive conditional: 0, positive unconditional: 17003, negative: 481, negative conditional: 0, negative unconditional: 481, unknown: 668, unknown conditional: 0, unknown unconditional: 668] , Statistics on independence cache: Total cache size (in pairs): 668, Positive cache size: 653, Positive conditional cache size: 0, Positive unconditional cache size: 653, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Independence queries for same thread: 76 - 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: 3207.7ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 48.5ms, AutomataDifference: 1380.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 377.9ms, PartialOrderReductionTime: 367.5ms, HoareTripleCheckerStatistics: 749 SDtfs, 1095 SDslu, 2352 SDs, 0 SdLazy, 300 SolverSat, 58 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 259.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 109 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 936.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5559occurred in iteration=0, InterpolantAutomatonStates: 86, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 267.0ms AutomataMinimizationTime, 8 MinimizatonAttempts, 808 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 26.3ms SsaConstructionTime, 167.6ms SatisfiabilityAnalysisTime, 788.6ms InterpolantComputationTime, 440 NumberOfCodeBlocks, 440 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 432 ConstructedInterpolants, 0 QuantifiedInterpolants, 1218 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 17:09:21,693 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...