/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-MCRwithDepranks-BasicCegarLoop.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-10 02:24:21,930 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-10 02:24:21,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-10 02:24:21,995 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-10 02:24:22,006 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-10 02:24:22,008 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-10 02:24:22,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-10 02:24:22,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-10 02:24:22,012 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-10 02:24:22,012 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-10 02:24:22,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-10 02:24:22,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-10 02:24:22,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-10 02:24:22,019 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-10 02:24:22,020 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-10 02:24:22,020 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-10 02:24:22,025 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-10 02:24:22,030 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-10 02:24:22,031 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-10 02:24:22,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-10 02:24:22,032 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-MCRwithDepranks-BasicCegarLoop.epf [2022-02-10 02:24:22,058 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-10 02:24:22,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-10 02:24:22,059 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-10 02:24:22,059 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-10 02:24:22,059 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-10 02:24:22,060 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-10 02:24:22,060 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-10 02:24:22,060 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-10 02:24:22,060 INFO L138 SettingsManager]: * Use SBE=true [2022-02-10 02:24:22,060 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-10 02:24:22,061 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-10 02:24:22,061 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-10 02:24:22,061 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-10 02:24:22,061 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-10 02:24:22,061 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-10 02:24:22,061 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-10 02:24:22,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-10 02:24:22,061 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-10 02:24:22,061 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-10 02:24:22,061 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-10 02:24:22,062 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-10 02:24:22,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-10 02:24:22,062 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-10 02:24:22,062 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-10 02:24:22,062 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-10 02:24:22,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 02:24:22,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-10 02:24:22,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-10 02:24:22,062 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-10 02:24:22,062 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-10 02:24:22,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-10 02:24:22,063 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-10 02:24:22,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-10 02:24:22,063 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-02-10 02:24:22,063 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-10 02:24:22,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-10 02:24:22,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-10 02:24:22,246 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-10 02:24:22,247 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-10 02:24:22,247 INFO L275 PluginConnector]: CDTParser initialized [2022-02-10 02:24:22,248 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c [2022-02-10 02:24:22,304 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8f18ba7d/dd09fbdfd51443588ec3fd03e84b2ab8/FLAG57dbe9203 [2022-02-10 02:24:22,602 INFO L306 CDTParser]: Found 1 translation units. [2022-02-10 02:24:22,602 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c [2022-02-10 02:24:22,607 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8f18ba7d/dd09fbdfd51443588ec3fd03e84b2ab8/FLAG57dbe9203 [2022-02-10 02:24:23,032 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8f18ba7d/dd09fbdfd51443588ec3fd03e84b2ab8 [2022-02-10 02:24:23,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-10 02:24:23,034 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-10 02:24:23,038 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-10 02:24:23,038 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-10 02:24:23,041 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-10 02:24:23,042 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.02 02:24:23" (1/1) ... [2022-02-10 02:24:23,044 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1304cb9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:24:23, skipping insertion in model container [2022-02-10 02:24:23,044 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.02 02:24:23" (1/1) ... [2022-02-10 02:24:23,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-10 02:24:23,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-10 02:24:23,200 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c[2098,2111] [2022-02-10 02:24:23,202 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-10 02:24:23,208 INFO L203 MainTranslator]: Completed pre-run [2022-02-10 02:24:23,249 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c[2098,2111] [2022-02-10 02:24:23,254 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-10 02:24:23,273 INFO L208 MainTranslator]: Completed translation [2022-02-10 02:24:23,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:24:23 WrapperNode [2022-02-10 02:24:23,273 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-10 02:24:23,274 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-10 02:24:23,274 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-10 02:24:23,274 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-10 02:24:23,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:24:23" (1/1) ... [2022-02-10 02:24:23,289 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:24:23" (1/1) ... [2022-02-10 02:24:23,317 INFO L137 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2022-02-10 02:24:23,318 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-10 02:24:23,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-10 02:24:23,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-10 02:24:23,319 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-10 02:24:23,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:24:23" (1/1) ... [2022-02-10 02:24:23,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:24:23" (1/1) ... [2022-02-10 02:24:23,326 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:24:23" (1/1) ... [2022-02-10 02:24:23,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:24:23" (1/1) ... [2022-02-10 02:24:23,328 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:24:23" (1/1) ... [2022-02-10 02:24:23,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:24:23" (1/1) ... [2022-02-10 02:24:23,332 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:24:23" (1/1) ... [2022-02-10 02:24:23,333 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-10 02:24:23,334 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-10 02:24:23,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-10 02:24:23,334 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-10 02:24:23,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:24:23" (1/1) ... [2022-02-10 02:24:23,344 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 02:24:23,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:24:23,393 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) [2022-02-10 02:24:23,417 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 [2022-02-10 02:24:23,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-10 02:24:23,429 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-10 02:24:23,429 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-10 02:24:23,429 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-10 02:24:23,429 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-10 02:24:23,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-10 02:24:23,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-10 02:24:23,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-10 02:24:23,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-02-10 02:24:23,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-02-10 02:24:23,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-10 02:24:23,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-10 02:24:23,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-10 02:24:23,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-10 02:24:23,431 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-10 02:24:23,497 INFO L234 CfgBuilder]: Building ICFG [2022-02-10 02:24:23,499 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-10 02:24:23,670 INFO L275 CfgBuilder]: Performing block encoding [2022-02-10 02:24:23,718 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-10 02:24:23,718 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-02-10 02:24:23,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 02:24:23 BoogieIcfgContainer [2022-02-10 02:24:23,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-10 02:24:23,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-10 02:24:23,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-10 02:24:23,724 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-10 02:24:23,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.02 02:24:23" (1/3) ... [2022-02-10 02:24:23,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@493ac0a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 02:24:23, skipping insertion in model container [2022-02-10 02:24:23,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:24:23" (2/3) ... [2022-02-10 02:24:23,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@493ac0a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 02:24:23, skipping insertion in model container [2022-02-10 02:24:23,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 02:24:23" (3/3) ... [2022-02-10 02:24:23,726 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr-alt.wvr.c [2022-02-10 02:24:23,729 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-10 02:24:23,729 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-10 02:24:23,729 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-10 02:24:23,730 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-10 02:24:23,752 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,752 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,752 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,753 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,753 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,753 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,754 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,754 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,754 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,754 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,754 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,755 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,755 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,755 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,755 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,755 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,755 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,755 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,756 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,756 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,756 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,756 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,758 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,758 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,759 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,759 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,759 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,759 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,760 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,760 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,760 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,760 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,770 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,770 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,770 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,770 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,770 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,770 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,771 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,771 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,771 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,771 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,771 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,772 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,775 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,775 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,775 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,775 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,775 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,776 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,776 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,776 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,776 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,777 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:23,779 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-10 02:24:23,810 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-10 02:24:23,815 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, 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 [2022-02-10 02:24:23,815 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-10 02:24:23,823 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 87 places, 86 transitions, 188 flow [2022-02-10 02:24:23,865 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 332 states, 331 states have (on average 2.5770392749244713) internal successors, (853), 331 states have internal predecessors, (853), 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) [2022-02-10 02:24:26,962 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 144502 transitions and produced 55971 states. [2022-02-10 02:24:27,420 INFO L276 IsEmpty]: Start isEmpty. Operand has 55971 states, 43147 states have (on average 1.3807217187753493) internal successors, (59574), 55970 states have internal predecessors, (59574), 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) [2022-02-10 02:24:27,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-10 02:24:27,986 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:24:27,986 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:24:27,987 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:24:27,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:24:27,991 INFO L85 PathProgramCache]: Analyzing trace with hash -372681751, now seen corresponding path program 1 times [2022-02-10 02:24:27,999 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:24:28,000 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763142861] [2022-02-10 02:24:28,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:24:28,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:24:28,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:24:28,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:28,119 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:24:28,119 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763142861] [2022-02-10 02:24:28,120 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763142861] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 02:24:28,120 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 02:24:28,120 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-10 02:24:28,121 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941834553] [2022-02-10 02:24:28,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 02:24:28,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-10 02:24:28,123 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:24:28,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-10 02:24:28,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-10 02:24:28,546 INFO L87 Difference]: Start difference. First operand has 55971 states, 43147 states have (on average 1.3807217187753493) internal successors, (59574), 55970 states have internal predecessors, (59574), 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 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:28,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:24:28,802 INFO L93 Difference]: Finished difference Result 11542 states and 12743 transitions. [2022-02-10 02:24:28,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 02:24:28,804 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-02-10 02:24:28,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:24:28,816 INFO L225 Difference]: With dead ends: 11542 [2022-02-10 02:24:28,817 INFO L226 Difference]: Without dead ends: 1178 [2022-02-10 02:24:28,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-10 02:24:28,820 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:24:28,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 65 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:24:28,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2022-02-10 02:24:28,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 77. [2022-02-10 02:24:28,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.0657894736842106) internal successors, (81), 76 states have internal predecessors, (81), 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) [2022-02-10 02:24:28,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2022-02-10 02:24:28,856 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 62 [2022-02-10 02:24:28,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:24:28,856 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2022-02-10 02:24:28,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:28,856 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2022-02-10 02:24:28,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-10 02:24:28,857 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:24:28,857 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:24:28,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-10 02:24:28,857 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:24:28,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:24:28,858 INFO L85 PathProgramCache]: Analyzing trace with hash 290398187, now seen corresponding path program 1 times [2022-02-10 02:24:28,858 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:24:28,858 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309964655] [2022-02-10 02:24:28,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:24:28,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:24:28,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:24:29,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:29,072 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:24:29,072 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309964655] [2022-02-10 02:24:29,072 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309964655] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 02:24:29,073 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 02:24:29,073 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-10 02:24:29,073 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006136107] [2022-02-10 02:24:29,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 02:24:29,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 02:24:29,074 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:24:29,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 02:24:29,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-02-10 02:24:29,074 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:29,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:24:29,118 INFO L93 Difference]: Finished difference Result 80 states and 84 transitions. [2022-02-10 02:24:29,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 02:24:29,118 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-02-10 02:24:29,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:24:29,119 INFO L225 Difference]: With dead ends: 80 [2022-02-10 02:24:29,119 INFO L226 Difference]: Without dead ends: 80 [2022-02-10 02:24:29,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2022-02-10 02:24:29,120 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 88 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:24:29,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 126 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:24:29,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-02-10 02:24:29,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2022-02-10 02:24:29,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.0649350649350648) internal successors, (82), 77 states have internal predecessors, (82), 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) [2022-02-10 02:24:29,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2022-02-10 02:24:29,123 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 62 [2022-02-10 02:24:29,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:24:29,124 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2022-02-10 02:24:29,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:29,124 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2022-02-10 02:24:29,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-02-10 02:24:29,125 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:24:29,125 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:24:29,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-10 02:24:29,125 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:24:29,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:24:29,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1320289993, now seen corresponding path program 1 times [2022-02-10 02:24:29,126 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:24:29,126 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229649092] [2022-02-10 02:24:29,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:24:29,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:24:29,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:24:29,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:29,181 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:24:29,181 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229649092] [2022-02-10 02:24:29,181 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229649092] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:24:29,181 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12846424] [2022-02-10 02:24:29,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:24:29,182 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:24:29,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:24:29,183 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:24:29,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-10 02:24:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:24:29,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2022-02-10 02:24:29,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:24:29,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:29,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:24:29,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:29,562 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12846424] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:24:29,562 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:24:29,562 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-02-10 02:24:29,562 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694342327] [2022-02-10 02:24:29,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:24:29,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 02:24:29,563 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:24:29,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 02:24:29,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-02-10 02:24:29,631 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 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) [2022-02-10 02:24:29,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:24:29,671 INFO L93 Difference]: Finished difference Result 97 states and 106 transitions. [2022-02-10 02:24:29,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 02:24:29,671 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-02-10 02:24:29,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:24:29,672 INFO L225 Difference]: With dead ends: 97 [2022-02-10 02:24:29,672 INFO L226 Difference]: Without dead ends: 91 [2022-02-10 02:24:29,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-02-10 02:24:29,673 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 10 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:24:29,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 216 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:24:29,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-02-10 02:24:29,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2022-02-10 02:24:29,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.101123595505618) internal successors, (98), 89 states have internal predecessors, (98), 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) [2022-02-10 02:24:29,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 98 transitions. [2022-02-10 02:24:29,676 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 98 transitions. Word has length 64 [2022-02-10 02:24:29,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:24:29,677 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 98 transitions. [2022-02-10 02:24:29,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 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) [2022-02-10 02:24:29,677 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 98 transitions. [2022-02-10 02:24:29,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 02:24:29,677 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:24:29,678 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:24:29,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-02-10 02:24:29,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:24:29,897 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:24:29,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:24:29,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1844773149, now seen corresponding path program 1 times [2022-02-10 02:24:29,897 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:24:29,897 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074750217] [2022-02-10 02:24:29,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:24:29,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:24:29,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:24:30,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:30,123 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:24:30,123 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074750217] [2022-02-10 02:24:30,123 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074750217] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:24:30,123 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335462316] [2022-02-10 02:24:30,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:24:30,123 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:24:30,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:24:30,125 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:24:30,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-10 02:24:30,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:24:30,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 02:24:30,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:24:30,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:30,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:24:30,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:30,951 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335462316] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:24:30,951 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:24:30,951 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-02-10 02:24:30,951 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402513228] [2022-02-10 02:24:30,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:24:30,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 02:24:30,952 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:24:30,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 02:24:30,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=882, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 02:24:30,953 INFO L87 Difference]: Start difference. First operand 90 states and 98 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 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) [2022-02-10 02:24:31,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:24:31,922 INFO L93 Difference]: Finished difference Result 191 states and 208 transitions. [2022-02-10 02:24:31,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-10 02:24:31,923 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 02:24:31,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:24:31,924 INFO L225 Difference]: With dead ends: 191 [2022-02-10 02:24:31,924 INFO L226 Difference]: Without dead ends: 139 [2022-02-10 02:24:31,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1072 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=703, Invalid=3329, Unknown=0, NotChecked=0, Total=4032 [2022-02-10 02:24:31,926 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 411 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:24:31,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 771 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:24:31,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-02-10 02:24:31,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 108. [2022-02-10 02:24:31,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.102803738317757) internal successors, (118), 107 states have internal predecessors, (118), 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) [2022-02-10 02:24:31,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 118 transitions. [2022-02-10 02:24:31,932 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 118 transitions. Word has length 69 [2022-02-10 02:24:31,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:24:31,932 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 118 transitions. [2022-02-10 02:24:31,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 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) [2022-02-10 02:24:31,932 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 118 transitions. [2022-02-10 02:24:31,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-10 02:24:31,933 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:24:31,933 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:24:31,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-02-10 02:24:32,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-02-10 02:24:32,148 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:24:32,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:24:32,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1107967217, now seen corresponding path program 2 times [2022-02-10 02:24:32,148 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:24:32,148 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791537842] [2022-02-10 02:24:32,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:24:32,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:24:32,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:24:32,424 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:32,424 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:24:32,424 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791537842] [2022-02-10 02:24:32,424 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791537842] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:24:32,424 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993973101] [2022-02-10 02:24:32,424 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:24:32,425 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:24:32,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:24:32,426 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:24:32,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-10 02:24:32,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:24:32,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:24:32,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-10 02:24:32,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:24:32,993 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:32,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:24:33,680 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:33,680 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993973101] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:24:33,680 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:24:33,680 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 16] total 34 [2022-02-10 02:24:33,680 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206884805] [2022-02-10 02:24:33,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:24:33,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-10 02:24:33,681 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:24:33,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-10 02:24:33,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=942, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:24:33,682 INFO L87 Difference]: Start difference. First operand 108 states and 118 transitions. Second operand has 34 states, 34 states have (on average 4.323529411764706) internal successors, (147), 34 states have internal predecessors, (147), 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) [2022-02-10 02:24:34,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:24:34,114 INFO L93 Difference]: Finished difference Result 135 states and 150 transitions. [2022-02-10 02:24:34,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 02:24:34,115 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.323529411764706) internal successors, (147), 34 states have internal predecessors, (147), 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 71 [2022-02-10 02:24:34,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:24:34,116 INFO L225 Difference]: With dead ends: 135 [2022-02-10 02:24:34,116 INFO L226 Difference]: Without dead ends: 118 [2022-02-10 02:24:34,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=324, Invalid=1482, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 02:24:34,117 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 117 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:24:34,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 887 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:24:34,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-02-10 02:24:34,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 103. [2022-02-10 02:24:34,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.0980392156862746) internal successors, (112), 102 states have internal predecessors, (112), 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) [2022-02-10 02:24:34,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 112 transitions. [2022-02-10 02:24:34,120 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 112 transitions. Word has length 71 [2022-02-10 02:24:34,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:24:34,121 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 112 transitions. [2022-02-10 02:24:34,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.323529411764706) internal successors, (147), 34 states have internal predecessors, (147), 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) [2022-02-10 02:24:34,121 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 112 transitions. [2022-02-10 02:24:34,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 02:24:34,121 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:24:34,121 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:24:34,138 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-02-10 02:24:34,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:24:34,336 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:24:34,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:24:34,336 INFO L85 PathProgramCache]: Analyzing trace with hash 2062490175, now seen corresponding path program 3 times [2022-02-10 02:24:34,336 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:24:34,337 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072620337] [2022-02-10 02:24:34,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:24:34,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:24:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:24:34,631 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:34,631 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:24:34,631 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072620337] [2022-02-10 02:24:34,631 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072620337] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:24:34,631 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220387050] [2022-02-10 02:24:34,631 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:24:34,632 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:24:34,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:24:34,633 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:24:34,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-10 02:24:34,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 02:24:34,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:24:34,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 02:24:34,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:24:35,203 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:35,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:24:35,788 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:35,788 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220387050] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:24:35,788 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:24:35,788 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-10 02:24:35,789 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815233994] [2022-02-10 02:24:35,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:24:35,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 02:24:35,789 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:24:35,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 02:24:35,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=1409, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 02:24:35,791 INFO L87 Difference]: Start difference. First operand 103 states and 112 transitions. Second operand has 41 states, 41 states have (on average 3.5853658536585367) internal successors, (147), 41 states have internal predecessors, (147), 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) [2022-02-10 02:24:38,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:24:38,179 INFO L93 Difference]: Finished difference Result 226 states and 253 transitions. [2022-02-10 02:24:38,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-10 02:24:38,179 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.5853658536585367) internal successors, (147), 41 states have internal predecessors, (147), 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 74 [2022-02-10 02:24:38,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:24:38,180 INFO L225 Difference]: With dead ends: 226 [2022-02-10 02:24:38,180 INFO L226 Difference]: Without dead ends: 176 [2022-02-10 02:24:38,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2351 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1256, Invalid=7116, Unknown=0, NotChecked=0, Total=8372 [2022-02-10 02:24:38,183 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 463 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 1430 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:24:38,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 1430 Invalid, 1236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1088 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:24:38,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-02-10 02:24:38,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 134. [2022-02-10 02:24:38,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 1.1578947368421053) internal successors, (154), 133 states have internal predecessors, (154), 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) [2022-02-10 02:24:38,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 154 transitions. [2022-02-10 02:24:38,187 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 154 transitions. Word has length 74 [2022-02-10 02:24:38,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:24:38,187 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 154 transitions. [2022-02-10 02:24:38,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.5853658536585367) internal successors, (147), 41 states have internal predecessors, (147), 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) [2022-02-10 02:24:38,187 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 154 transitions. [2022-02-10 02:24:38,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-02-10 02:24:38,187 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:24:38,187 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:24:38,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-10 02:24:38,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:24:38,405 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:24:38,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:24:38,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1918316151, now seen corresponding path program 4 times [2022-02-10 02:24:38,405 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:24:38,405 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30130577] [2022-02-10 02:24:38,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:24:38,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:24:38,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:24:38,848 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:38,848 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:24:38,848 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30130577] [2022-02-10 02:24:38,848 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30130577] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:24:38,848 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308880599] [2022-02-10 02:24:38,848 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:24:38,848 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:24:38,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:24:38,850 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:24:38,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-10 02:24:38,897 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:24:38,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:24:38,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-10 02:24:38,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:24:39,364 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:39,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:24:40,134 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:40,134 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308880599] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:24:40,134 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:24:40,134 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 19] total 42 [2022-02-10 02:24:40,134 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422979014] [2022-02-10 02:24:40,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:24:40,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-02-10 02:24:40,135 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:24:40,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-02-10 02:24:40,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=1458, Unknown=0, NotChecked=0, Total=1722 [2022-02-10 02:24:40,136 INFO L87 Difference]: Start difference. First operand 134 states and 154 transitions. Second operand has 42 states, 42 states have (on average 3.5714285714285716) internal successors, (150), 42 states have internal predecessors, (150), 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) [2022-02-10 02:24:42,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:24:42,264 INFO L93 Difference]: Finished difference Result 269 states and 309 transitions. [2022-02-10 02:24:42,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-10 02:24:42,265 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.5714285714285716) internal successors, (150), 42 states have internal predecessors, (150), 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 76 [2022-02-10 02:24:42,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:24:42,266 INFO L225 Difference]: With dead ends: 269 [2022-02-10 02:24:42,266 INFO L226 Difference]: Without dead ends: 195 [2022-02-10 02:24:42,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 127 SyntacticMatches, 3 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2219 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1301, Invalid=6709, Unknown=0, NotChecked=0, Total=8010 [2022-02-10 02:24:42,269 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 263 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 1305 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 1559 SdHoareTripleChecker+Invalid, 1418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:24:42,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 1559 Invalid, 1418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1305 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:24:42,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-02-10 02:24:42,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 159. [2022-02-10 02:24:42,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 1.1835443037974684) internal successors, (187), 158 states have internal predecessors, (187), 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) [2022-02-10 02:24:42,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 187 transitions. [2022-02-10 02:24:42,273 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 187 transitions. Word has length 76 [2022-02-10 02:24:42,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:24:42,274 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 187 transitions. [2022-02-10 02:24:42,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.5714285714285716) internal successors, (150), 42 states have internal predecessors, (150), 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) [2022-02-10 02:24:42,274 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 187 transitions. [2022-02-10 02:24:42,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-02-10 02:24:42,274 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:24:42,274 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:24:42,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-10 02:24:42,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:24:42,497 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:24:42,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:24:42,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1830084549, now seen corresponding path program 5 times [2022-02-10 02:24:42,498 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:24:42,498 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194126955] [2022-02-10 02:24:42,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:24:42,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:24:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:24:42,792 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:42,792 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:24:42,792 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194126955] [2022-02-10 02:24:42,792 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194126955] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:24:42,793 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114251022] [2022-02-10 02:24:42,793 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:24:42,793 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:24:42,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:24:42,805 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:24:42,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-10 02:24:42,855 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 02:24:42,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:24:42,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-10 02:24:42,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:24:43,397 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:43,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:24:44,467 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:44,468 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114251022] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:24:44,468 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:24:44,468 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 19] total 43 [2022-02-10 02:24:44,471 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815854295] [2022-02-10 02:24:44,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:24:44,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-02-10 02:24:44,472 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:24:44,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-02-10 02:24:44,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1625, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 02:24:44,473 INFO L87 Difference]: Start difference. First operand 159 states and 187 transitions. Second operand has 43 states, 43 states have (on average 3.558139534883721) internal successors, (153), 43 states have internal predecessors, (153), 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) [2022-02-10 02:24:46,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:24:46,168 INFO L93 Difference]: Finished difference Result 227 states and 260 transitions. [2022-02-10 02:24:46,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-10 02:24:46,168 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.558139534883721) internal successors, (153), 43 states have internal predecessors, (153), 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 76 [2022-02-10 02:24:46,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:24:46,171 INFO L225 Difference]: With dead ends: 227 [2022-02-10 02:24:46,171 INFO L226 Difference]: Without dead ends: 183 [2022-02-10 02:24:46,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 126 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1529 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=601, Invalid=5251, Unknown=0, NotChecked=0, Total=5852 [2022-02-10 02:24:46,174 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 255 mSDsluCounter, 1212 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:24:46,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 1189 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 954 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:24:46,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-02-10 02:24:46,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 172. [2022-02-10 02:24:46,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.1812865497076024) internal successors, (202), 171 states have internal predecessors, (202), 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) [2022-02-10 02:24:46,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 202 transitions. [2022-02-10 02:24:46,190 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 202 transitions. Word has length 76 [2022-02-10 02:24:46,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:24:46,190 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 202 transitions. [2022-02-10 02:24:46,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.558139534883721) internal successors, (153), 43 states have internal predecessors, (153), 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) [2022-02-10 02:24:46,190 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 202 transitions. [2022-02-10 02:24:46,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-02-10 02:24:46,190 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:24:46,191 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:24:46,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-10 02:24:46,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:24:46,408 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:24:46,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:24:46,409 INFO L85 PathProgramCache]: Analyzing trace with hash -801326051, now seen corresponding path program 6 times [2022-02-10 02:24:46,409 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:24:46,409 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94641306] [2022-02-10 02:24:46,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:24:46,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:24:46,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:24:46,616 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:46,616 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:24:46,617 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94641306] [2022-02-10 02:24:46,617 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94641306] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:24:46,617 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346322239] [2022-02-10 02:24:46,617 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:24:46,617 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:24:46,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:24:46,618 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:24:46,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-10 02:24:46,696 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 02:24:46,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:24:46,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-10 02:24:46,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:24:47,039 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:47,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:24:47,612 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:47,613 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346322239] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:24:47,613 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:24:47,613 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 18] total 41 [2022-02-10 02:24:47,615 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119274053] [2022-02-10 02:24:47,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:24:47,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 02:24:47,616 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:24:47,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 02:24:47,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1436, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 02:24:47,617 INFO L87 Difference]: Start difference. First operand 172 states and 202 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 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) [2022-02-10 02:24:49,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:24:49,216 INFO L93 Difference]: Finished difference Result 221 states and 256 transitions. [2022-02-10 02:24:49,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-10 02:24:49,217 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 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 76 [2022-02-10 02:24:49,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:24:49,218 INFO L225 Difference]: With dead ends: 221 [2022-02-10 02:24:49,218 INFO L226 Difference]: Without dead ends: 184 [2022-02-10 02:24:49,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 125 SyntacticMatches, 5 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2039 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=886, Invalid=6424, Unknown=0, NotChecked=0, Total=7310 [2022-02-10 02:24:49,220 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 231 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:24:49,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 1078 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:24:49,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-02-10 02:24:49,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 169. [2022-02-10 02:24:49,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.1785714285714286) internal successors, (198), 168 states have internal predecessors, (198), 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) [2022-02-10 02:24:49,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 198 transitions. [2022-02-10 02:24:49,224 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 198 transitions. Word has length 76 [2022-02-10 02:24:49,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:24:49,224 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 198 transitions. [2022-02-10 02:24:49,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 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) [2022-02-10 02:24:49,225 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 198 transitions. [2022-02-10 02:24:49,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-10 02:24:49,225 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:24:49,225 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:24:49,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-10 02:24:49,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:24:49,440 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:24:49,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:24:49,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1638476091, now seen corresponding path program 7 times [2022-02-10 02:24:49,440 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:24:49,440 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801280592] [2022-02-10 02:24:49,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:24:49,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:24:49,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:24:49,704 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:49,704 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:24:49,704 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801280592] [2022-02-10 02:24:49,704 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801280592] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:24:49,704 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121242039] [2022-02-10 02:24:49,705 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:24:49,705 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:24:49,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:24:49,706 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:24:49,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-10 02:24:49,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:24:49,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 32 conjunts are in the unsatisfiable core [2022-02-10 02:24:49,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:24:50,403 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:50,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:24:51,004 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:51,004 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121242039] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:24:51,004 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:24:51,004 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21, 20] total 48 [2022-02-10 02:24:51,005 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760270399] [2022-02-10 02:24:51,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:24:51,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-10 02:24:51,005 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:24:51,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-10 02:24:51,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=2010, Unknown=0, NotChecked=0, Total=2256 [2022-02-10 02:24:51,006 INFO L87 Difference]: Start difference. First operand 169 states and 198 transitions. Second operand has 48 states, 48 states have (on average 3.375) internal successors, (162), 48 states have internal predecessors, (162), 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) [2022-02-10 02:24:53,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:24:53,913 INFO L93 Difference]: Finished difference Result 304 states and 352 transitions. [2022-02-10 02:24:53,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-02-10 02:24:53,913 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.375) internal successors, (162), 48 states have internal predecessors, (162), 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 79 [2022-02-10 02:24:53,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:24:53,915 INFO L225 Difference]: With dead ends: 304 [2022-02-10 02:24:53,915 INFO L226 Difference]: Without dead ends: 268 [2022-02-10 02:24:53,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 129 SyntacticMatches, 2 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5376 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2070, Invalid=14700, Unknown=0, NotChecked=0, Total=16770 [2022-02-10 02:24:53,919 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 632 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 1537 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 1575 SdHoareTripleChecker+Invalid, 1736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:24:53,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [632 Valid, 1575 Invalid, 1736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1537 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:24:53,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-02-10 02:24:53,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 173. [2022-02-10 02:24:53,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.180232558139535) internal successors, (203), 172 states have internal predecessors, (203), 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) [2022-02-10 02:24:53,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 203 transitions. [2022-02-10 02:24:53,927 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 203 transitions. Word has length 79 [2022-02-10 02:24:53,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:24:53,927 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 203 transitions. [2022-02-10 02:24:53,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.375) internal successors, (162), 48 states have internal predecessors, (162), 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) [2022-02-10 02:24:53,927 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 203 transitions. [2022-02-10 02:24:53,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-10 02:24:53,928 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:24:53,928 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:24:53,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-02-10 02:24:54,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-02-10 02:24:54,139 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:24:54,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:24:54,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1496480925, now seen corresponding path program 8 times [2022-02-10 02:24:54,139 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:24:54,139 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879272390] [2022-02-10 02:24:54,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:24:54,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:24:54,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:24:54,406 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:54,406 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:24:54,406 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879272390] [2022-02-10 02:24:54,406 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879272390] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:24:54,406 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937799012] [2022-02-10 02:24:54,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:24:54,406 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:24:54,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:24:54,420 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:24:54,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-10 02:24:54,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:24:54,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:24:54,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 32 conjunts are in the unsatisfiable core [2022-02-10 02:24:54,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:24:55,039 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:55,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:24:55,709 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:55,709 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937799012] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:24:55,709 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:24:55,709 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 50 [2022-02-10 02:24:55,709 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940307957] [2022-02-10 02:24:55,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:24:55,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-02-10 02:24:55,711 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:24:55,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-02-10 02:24:55,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=2215, Unknown=0, NotChecked=0, Total=2450 [2022-02-10 02:24:55,712 INFO L87 Difference]: Start difference. First operand 173 states and 203 transitions. Second operand has 50 states, 50 states have (on average 3.24) internal successors, (162), 50 states have internal predecessors, (162), 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) [2022-02-10 02:24:57,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:24:57,182 INFO L93 Difference]: Finished difference Result 277 states and 316 transitions. [2022-02-10 02:24:57,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-02-10 02:24:57,182 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.24) internal successors, (162), 50 states have internal predecessors, (162), 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 79 [2022-02-10 02:24:57,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:24:57,183 INFO L225 Difference]: With dead ends: 277 [2022-02-10 02:24:57,183 INFO L226 Difference]: Without dead ends: 225 [2022-02-10 02:24:57,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 127 SyntacticMatches, 2 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2679 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=923, Invalid=8779, Unknown=0, NotChecked=0, Total=9702 [2022-02-10 02:24:57,186 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 371 mSDsluCounter, 1564 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 1539 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:24:57,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 1539 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:24:57,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-02-10 02:24:57,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 170. [2022-02-10 02:24:57,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 1.1775147928994083) internal successors, (199), 169 states have internal predecessors, (199), 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) [2022-02-10 02:24:57,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 199 transitions. [2022-02-10 02:24:57,191 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 199 transitions. Word has length 79 [2022-02-10 02:24:57,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:24:57,191 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 199 transitions. [2022-02-10 02:24:57,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.24) internal successors, (162), 50 states have internal predecessors, (162), 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) [2022-02-10 02:24:57,191 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 199 transitions. [2022-02-10 02:24:57,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-02-10 02:24:57,192 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:24:57,192 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:24:57,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-02-10 02:24:57,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:24:57,409 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:24:57,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:24:57,409 INFO L85 PathProgramCache]: Analyzing trace with hash -542085071, now seen corresponding path program 9 times [2022-02-10 02:24:57,409 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:24:57,409 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836242909] [2022-02-10 02:24:57,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:24:57,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:24:57,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:24:57,706 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:57,706 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:24:57,706 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836242909] [2022-02-10 02:24:57,707 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836242909] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:24:57,707 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525170351] [2022-02-10 02:24:57,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:24:57,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:24:57,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:24:57,708 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:24:57,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-10 02:24:57,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 02:24:57,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:24:57,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 34 conjunts are in the unsatisfiable core [2022-02-10 02:24:57,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:24:58,301 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:58,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:24:59,181 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:59,181 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525170351] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:24:59,182 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:24:59,182 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 22] total 51 [2022-02-10 02:24:59,182 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042732453] [2022-02-10 02:24:59,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:24:59,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-02-10 02:24:59,182 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:24:59,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-02-10 02:24:59,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=337, Invalid=2213, Unknown=0, NotChecked=0, Total=2550 [2022-02-10 02:24:59,183 INFO L87 Difference]: Start difference. First operand 170 states and 199 transitions. Second operand has 51 states, 51 states have (on average 3.2941176470588234) internal successors, (168), 51 states have internal predecessors, (168), 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) [2022-02-10 02:25:02,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:25:02,559 INFO L93 Difference]: Finished difference Result 337 states and 390 transitions. [2022-02-10 02:25:02,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-02-10 02:25:02,559 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.2941176470588234) internal successors, (168), 51 states have internal predecessors, (168), 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 81 [2022-02-10 02:25:02,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:25:02,562 INFO L225 Difference]: With dead ends: 337 [2022-02-10 02:25:02,562 INFO L226 Difference]: Without dead ends: 301 [2022-02-10 02:25:02,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 130 SyntacticMatches, 3 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5649 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2440, Invalid=14852, Unknown=0, NotChecked=0, Total=17292 [2022-02-10 02:25:02,565 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 670 mSDsluCounter, 1477 mSDsCounter, 0 mSdLazyCounter, 1443 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 1471 SdHoareTripleChecker+Invalid, 1651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 1443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:25:02,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [670 Valid, 1471 Invalid, 1651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 1443 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:25:02,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-02-10 02:25:02,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 160. [2022-02-10 02:25:02,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 1.1635220125786163) internal successors, (185), 159 states have internal predecessors, (185), 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) [2022-02-10 02:25:02,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 185 transitions. [2022-02-10 02:25:02,575 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 185 transitions. Word has length 81 [2022-02-10 02:25:02,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:25:02,575 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 185 transitions. [2022-02-10 02:25:02,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.2941176470588234) internal successors, (168), 51 states have internal predecessors, (168), 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) [2022-02-10 02:25:02,575 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 185 transitions. [2022-02-10 02:25:02,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-02-10 02:25:02,577 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:25:02,577 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:25:02,594 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-02-10 02:25:02,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-02-10 02:25:02,794 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:25:02,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:25:02,794 INFO L85 PathProgramCache]: Analyzing trace with hash -158465705, now seen corresponding path program 10 times [2022-02-10 02:25:02,794 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:25:02,794 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16445410] [2022-02-10 02:25:02,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:25:02,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:25:02,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:25:03,220 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:03,220 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:25:03,220 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16445410] [2022-02-10 02:25:03,220 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16445410] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:25:03,220 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881356400] [2022-02-10 02:25:03,220 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:25:03,220 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:25:03,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:25:03,221 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:25:03,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-02-10 02:25:03,273 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:25:03,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:25:03,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 34 conjunts are in the unsatisfiable core [2022-02-10 02:25:03,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:25:03,910 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:03,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:25:04,633 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:04,634 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881356400] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:25:04,634 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:25:04,634 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 22] total 55 [2022-02-10 02:25:04,634 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997170635] [2022-02-10 02:25:04,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:25:04,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-10 02:25:04,634 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:25:04,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-10 02:25:04,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=2618, Unknown=0, NotChecked=0, Total=2970 [2022-02-10 02:25:04,635 INFO L87 Difference]: Start difference. First operand 160 states and 185 transitions. Second operand has 55 states, 55 states have (on average 3.1636363636363636) internal successors, (174), 55 states have internal predecessors, (174), 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) [2022-02-10 02:25:09,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:25:09,827 INFO L93 Difference]: Finished difference Result 614 states and 702 transitions. [2022-02-10 02:25:09,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2022-02-10 02:25:09,827 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 3.1636363636363636) internal successors, (174), 55 states have internal predecessors, (174), 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 83 [2022-02-10 02:25:09,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:25:09,828 INFO L225 Difference]: With dead ends: 614 [2022-02-10 02:25:09,829 INFO L226 Difference]: Without dead ends: 504 [2022-02-10 02:25:09,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 132 SyntacticMatches, 2 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11224 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=4310, Invalid=28270, Unknown=0, NotChecked=0, Total=32580 [2022-02-10 02:25:09,833 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 1216 mSDsluCounter, 2670 mSDsCounter, 0 mSdLazyCounter, 2467 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1216 SdHoareTripleChecker+Valid, 2524 SdHoareTripleChecker+Invalid, 2686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 2467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 02:25:09,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1216 Valid, 2524 Invalid, 2686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 2467 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-10 02:25:09,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2022-02-10 02:25:09,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 252. [2022-02-10 02:25:09,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.2430278884462151) internal successors, (312), 251 states have internal predecessors, (312), 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) [2022-02-10 02:25:09,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 312 transitions. [2022-02-10 02:25:09,838 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 312 transitions. Word has length 83 [2022-02-10 02:25:09,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:25:09,838 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 312 transitions. [2022-02-10 02:25:09,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 3.1636363636363636) internal successors, (174), 55 states have internal predecessors, (174), 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) [2022-02-10 02:25:09,838 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 312 transitions. [2022-02-10 02:25:09,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-02-10 02:25:09,838 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:25:09,838 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:25:09,855 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-02-10 02:25:10,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-02-10 02:25:10,039 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:25:10,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:25:10,040 INFO L85 PathProgramCache]: Analyzing trace with hash -705032301, now seen corresponding path program 11 times [2022-02-10 02:25:10,040 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:25:10,040 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411401368] [2022-02-10 02:25:10,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:25:10,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:25:10,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:25:10,376 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:10,376 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:25:10,376 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411401368] [2022-02-10 02:25:10,376 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411401368] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:25:10,376 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519351112] [2022-02-10 02:25:10,376 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:25:10,376 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:25:10,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:25:10,392 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:25:10,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-02-10 02:25:10,444 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 02:25:10,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:25:10,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 34 conjunts are in the unsatisfiable core [2022-02-10 02:25:10,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:25:10,946 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:10,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:25:11,836 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:11,836 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519351112] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:25:11,836 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:25:11,836 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 21] total 54 [2022-02-10 02:25:11,836 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178436858] [2022-02-10 02:25:11,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:25:11,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-10 02:25:11,837 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:25:11,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-10 02:25:11,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=2602, Unknown=0, NotChecked=0, Total=2862 [2022-02-10 02:25:11,838 INFO L87 Difference]: Start difference. First operand 252 states and 312 transitions. Second operand has 54 states, 54 states have (on average 3.2222222222222223) internal successors, (174), 54 states have internal predecessors, (174), 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) [2022-02-10 02:25:14,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:25:14,868 INFO L93 Difference]: Finished difference Result 520 states and 612 transitions. [2022-02-10 02:25:14,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-02-10 02:25:14,869 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 3.2222222222222223) internal successors, (174), 54 states have internal predecessors, (174), 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 83 [2022-02-10 02:25:14,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:25:14,870 INFO L225 Difference]: With dead ends: 520 [2022-02-10 02:25:14,870 INFO L226 Difference]: Without dead ends: 385 [2022-02-10 02:25:14,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 133 SyntacticMatches, 2 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6327 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2166, Invalid=18140, Unknown=0, NotChecked=0, Total=20306 [2022-02-10 02:25:14,873 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 600 mSDsluCounter, 1658 mSDsCounter, 0 mSdLazyCounter, 1495 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 1604 SdHoareTripleChecker+Invalid, 1595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:25:14,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [600 Valid, 1604 Invalid, 1595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1495 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:25:14,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-02-10 02:25:14,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 313. [2022-02-10 02:25:14,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 312 states have (on average 1.2179487179487178) internal successors, (380), 312 states have internal predecessors, (380), 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) [2022-02-10 02:25:14,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 380 transitions. [2022-02-10 02:25:14,878 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 380 transitions. Word has length 83 [2022-02-10 02:25:14,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:25:14,878 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 380 transitions. [2022-02-10 02:25:14,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 3.2222222222222223) internal successors, (174), 54 states have internal predecessors, (174), 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) [2022-02-10 02:25:14,878 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 380 transitions. [2022-02-10 02:25:14,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-02-10 02:25:14,879 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:25:14,879 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:25:14,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-02-10 02:25:15,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-02-10 02:25:15,079 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:25:15,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:25:15,080 INFO L85 PathProgramCache]: Analyzing trace with hash 552214587, now seen corresponding path program 12 times [2022-02-10 02:25:15,080 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:25:15,080 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717716809] [2022-02-10 02:25:15,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:25:15,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:25:15,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:25:15,417 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:15,418 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:25:15,418 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717716809] [2022-02-10 02:25:15,418 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717716809] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:25:15,418 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65482342] [2022-02-10 02:25:15,418 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:25:15,418 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:25:15,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:25:15,419 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:25:15,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-02-10 02:25:15,473 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 02:25:15,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:25:15,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 34 conjunts are in the unsatisfiable core [2022-02-10 02:25:15,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:25:16,200 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:16,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:25:17,169 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:17,170 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65482342] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:25:17,170 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:25:17,170 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 21] total 54 [2022-02-10 02:25:17,170 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771748676] [2022-02-10 02:25:17,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:25:17,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-10 02:25:17,171 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:25:17,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-10 02:25:17,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=2596, Unknown=0, NotChecked=0, Total=2862 [2022-02-10 02:25:17,172 INFO L87 Difference]: Start difference. First operand 313 states and 380 transitions. Second operand has 54 states, 54 states have (on average 3.2222222222222223) internal successors, (174), 54 states have internal predecessors, (174), 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) [2022-02-10 02:25:20,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:25:20,221 INFO L93 Difference]: Finished difference Result 536 states and 636 transitions. [2022-02-10 02:25:20,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-02-10 02:25:20,221 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 3.2222222222222223) internal successors, (174), 54 states have internal predecessors, (174), 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 83 [2022-02-10 02:25:20,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:25:20,223 INFO L225 Difference]: With dead ends: 536 [2022-02-10 02:25:20,223 INFO L226 Difference]: Without dead ends: 450 [2022-02-10 02:25:20,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 132 SyntacticMatches, 3 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7001 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2004, Invalid=20048, Unknown=0, NotChecked=0, Total=22052 [2022-02-10 02:25:20,227 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 535 mSDsluCounter, 2350 mSDsCounter, 0 mSdLazyCounter, 2352 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 2254 SdHoareTripleChecker+Invalid, 2490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 2352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 02:25:20,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [535 Valid, 2254 Invalid, 2490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 2352 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-10 02:25:20,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-02-10 02:25:20,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 237. [2022-02-10 02:25:20,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 1.1906779661016949) internal successors, (281), 236 states have internal predecessors, (281), 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) [2022-02-10 02:25:20,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 281 transitions. [2022-02-10 02:25:20,232 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 281 transitions. Word has length 83 [2022-02-10 02:25:20,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:25:20,233 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 281 transitions. [2022-02-10 02:25:20,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 3.2222222222222223) internal successors, (174), 54 states have internal predecessors, (174), 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) [2022-02-10 02:25:20,233 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 281 transitions. [2022-02-10 02:25:20,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-02-10 02:25:20,234 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:25:20,234 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:25:20,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-02-10 02:25:20,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-02-10 02:25:20,450 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:25:20,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:25:20,451 INFO L85 PathProgramCache]: Analyzing trace with hash -866988353, now seen corresponding path program 13 times [2022-02-10 02:25:20,451 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:25:20,451 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068052393] [2022-02-10 02:25:20,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:25:20,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:25:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:25:20,801 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:20,801 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:25:20,801 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068052393] [2022-02-10 02:25:20,801 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068052393] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:25:20,801 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866563142] [2022-02-10 02:25:20,801 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:25:20,802 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:25:20,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:25:20,803 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:25:20,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-02-10 02:25:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:25:20,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 38 conjunts are in the unsatisfiable core [2022-02-10 02:25:20,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:25:21,478 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:21,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:25:22,090 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:22,090 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866563142] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:25:22,090 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:25:22,090 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 59 [2022-02-10 02:25:22,090 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078744366] [2022-02-10 02:25:22,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:25:22,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-02-10 02:25:22,092 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:25:22,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-02-10 02:25:22,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=3069, Unknown=0, NotChecked=0, Total=3422 [2022-02-10 02:25:22,104 INFO L87 Difference]: Start difference. First operand 237 states and 281 transitions. Second operand has 59 states, 59 states have (on average 3.0) internal successors, (177), 59 states have internal predecessors, (177), 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) [2022-02-10 02:25:23,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:25:23,616 INFO L93 Difference]: Finished difference Result 349 states and 414 transitions. [2022-02-10 02:25:23,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-02-10 02:25:23,617 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 3.0) internal successors, (177), 59 states have internal predecessors, (177), 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 84 [2022-02-10 02:25:23,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:25:23,619 INFO L225 Difference]: With dead ends: 349 [2022-02-10 02:25:23,619 INFO L226 Difference]: Without dead ends: 325 [2022-02-10 02:25:23,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4353 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1331, Invalid=12475, Unknown=0, NotChecked=0, Total=13806 [2022-02-10 02:25:23,621 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 525 mSDsluCounter, 1321 mSDsCounter, 0 mSdLazyCounter, 1266 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:25:23,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [525 Valid, 1303 Invalid, 1400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1266 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:25:23,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-02-10 02:25:23,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 243. [2022-02-10 02:25:23,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.1942148760330578) internal successors, (289), 242 states have internal predecessors, (289), 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) [2022-02-10 02:25:23,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 289 transitions. [2022-02-10 02:25:23,629 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 289 transitions. Word has length 84 [2022-02-10 02:25:23,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:25:23,629 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 289 transitions. [2022-02-10 02:25:23,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 3.0) internal successors, (177), 59 states have internal predecessors, (177), 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) [2022-02-10 02:25:23,629 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 289 transitions. [2022-02-10 02:25:23,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-02-10 02:25:23,630 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:25:23,630 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:25:23,647 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-02-10 02:25:23,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:25:23,847 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:25:23,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:25:23,848 INFO L85 PathProgramCache]: Analyzing trace with hash 351364617, now seen corresponding path program 14 times [2022-02-10 02:25:23,848 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:25:23,848 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580373435] [2022-02-10 02:25:23,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:25:23,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:25:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:25:24,228 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:24,229 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:25:24,229 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580373435] [2022-02-10 02:25:24,229 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580373435] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:25:24,229 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49860500] [2022-02-10 02:25:24,229 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:25:24,229 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:25:24,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:25:24,230 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:25:24,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-02-10 02:25:24,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:25:24,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:25:24,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 39 conjunts are in the unsatisfiable core [2022-02-10 02:25:24,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:25:25,005 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:25,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:25:26,060 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:26,061 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49860500] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:25:26,061 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:25:26,061 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25, 24] total 59 [2022-02-10 02:25:26,061 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403960172] [2022-02-10 02:25:26,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:25:26,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-02-10 02:25:26,061 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:25:26,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-02-10 02:25:26,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=3120, Unknown=0, NotChecked=0, Total=3422 [2022-02-10 02:25:26,062 INFO L87 Difference]: Start difference. First operand 243 states and 289 transitions. Second operand has 59 states, 59 states have (on average 3.0508474576271185) internal successors, (180), 59 states have internal predecessors, (180), 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) [2022-02-10 02:25:28,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:25:28,248 INFO L93 Difference]: Finished difference Result 426 states and 510 transitions. [2022-02-10 02:25:28,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-02-10 02:25:28,248 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 3.0508474576271185) internal successors, (180), 59 states have internal predecessors, (180), 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 86 [2022-02-10 02:25:28,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:25:28,248 INFO L225 Difference]: With dead ends: 426 [2022-02-10 02:25:28,249 INFO L226 Difference]: Without dead ends: 179 [2022-02-10 02:25:28,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 134 SyntacticMatches, 4 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5412 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1710, Invalid=16112, Unknown=0, NotChecked=0, Total=17822 [2022-02-10 02:25:28,251 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 418 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 1838 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 2037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:25:28,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [418 Valid, 1380 Invalid, 2037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1838 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:25:28,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-02-10 02:25:28,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 113. [2022-02-10 02:25:28,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.0982142857142858) internal successors, (123), 112 states have internal predecessors, (123), 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) [2022-02-10 02:25:28,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 123 transitions. [2022-02-10 02:25:28,253 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 123 transitions. Word has length 86 [2022-02-10 02:25:28,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:25:28,253 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 123 transitions. [2022-02-10 02:25:28,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 3.0508474576271185) internal successors, (180), 59 states have internal predecessors, (180), 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) [2022-02-10 02:25:28,254 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 123 transitions. [2022-02-10 02:25:28,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-02-10 02:25:28,254 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:25:28,254 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:25:28,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-02-10 02:25:28,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-02-10 02:25:28,464 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:25:28,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:25:28,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1468354717, now seen corresponding path program 15 times [2022-02-10 02:25:28,464 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:25:28,464 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192518963] [2022-02-10 02:25:28,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:25:28,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:25:28,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:25:28,793 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 9 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:28,793 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:25:28,793 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192518963] [2022-02-10 02:25:28,793 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192518963] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:25:28,793 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687907719] [2022-02-10 02:25:28,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:25:28,793 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:25:28,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:25:28,806 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:25:28,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-02-10 02:25:28,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-10 02:25:28,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:25:28,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 39 conjunts are in the unsatisfiable core [2022-02-10 02:25:28,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:25:29,386 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:29,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:25:30,202 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:30,203 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687907719] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:25:30,203 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:25:30,203 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 24] total 60 [2022-02-10 02:25:30,203 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231911316] [2022-02-10 02:25:30,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:25:30,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-02-10 02:25:30,203 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:25:30,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-02-10 02:25:30,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=3219, Unknown=0, NotChecked=0, Total=3540 [2022-02-10 02:25:30,204 INFO L87 Difference]: Start difference. First operand 113 states and 123 transitions. Second operand has 60 states, 60 states have (on average 3.033333333333333) internal successors, (182), 60 states have internal predecessors, (182), 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) [2022-02-10 02:25:31,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:25:31,263 INFO L93 Difference]: Finished difference Result 168 states and 184 transitions. [2022-02-10 02:25:31,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-10 02:25:31,263 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 3.033333333333333) internal successors, (182), 60 states have internal predecessors, (182), 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 86 [2022-02-10 02:25:31,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:25:31,265 INFO L225 Difference]: With dead ends: 168 [2022-02-10 02:25:31,265 INFO L226 Difference]: Without dead ends: 133 [2022-02-10 02:25:31,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 133 SyntacticMatches, 4 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3184 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=922, Invalid=9584, Unknown=0, NotChecked=0, Total=10506 [2022-02-10 02:25:31,267 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 309 mSDsluCounter, 1685 mSDsCounter, 0 mSdLazyCounter, 1474 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 1544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:25:31,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 1656 Invalid, 1544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1474 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:25:31,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-02-10 02:25:31,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 113. [2022-02-10 02:25:31,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.0892857142857142) internal successors, (122), 112 states have internal predecessors, (122), 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) [2022-02-10 02:25:31,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 122 transitions. [2022-02-10 02:25:31,269 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 122 transitions. Word has length 86 [2022-02-10 02:25:31,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:25:31,269 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 122 transitions. [2022-02-10 02:25:31,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 3.033333333333333) internal successors, (182), 60 states have internal predecessors, (182), 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) [2022-02-10 02:25:31,269 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 122 transitions. [2022-02-10 02:25:31,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-02-10 02:25:31,270 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:25:31,270 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:25:31,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-02-10 02:25:31,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-02-10 02:25:31,487 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:25:31,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:25:31,487 INFO L85 PathProgramCache]: Analyzing trace with hash 2028094651, now seen corresponding path program 16 times [2022-02-10 02:25:31,487 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:25:31,487 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228380716] [2022-02-10 02:25:31,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:25:31,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:25:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:25:31,907 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 9 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:31,907 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:25:31,907 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228380716] [2022-02-10 02:25:31,907 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228380716] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:25:31,907 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905286683] [2022-02-10 02:25:31,907 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:25:31,907 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:25:31,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:25:31,920 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:25:31,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-02-10 02:25:31,974 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:25:31,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:25:31,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 44 conjunts are in the unsatisfiable core [2022-02-10 02:25:31,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:25:32,847 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:32,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:25:33,737 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:33,738 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905286683] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:25:33,738 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:25:33,738 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27, 26] total 66 [2022-02-10 02:25:33,738 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983255563] [2022-02-10 02:25:33,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:25:33,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-02-10 02:25:33,738 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:25:33,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-02-10 02:25:33,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=373, Invalid=3917, Unknown=0, NotChecked=0, Total=4290 [2022-02-10 02:25:33,740 INFO L87 Difference]: Start difference. First operand 113 states and 122 transitions. Second operand has 66 states, 66 states have (on average 2.909090909090909) internal successors, (192), 66 states have internal predecessors, (192), 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) [2022-02-10 02:25:35,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:25:35,744 INFO L93 Difference]: Finished difference Result 205 states and 225 transitions. [2022-02-10 02:25:35,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-02-10 02:25:35,745 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.909090909090909) internal successors, (192), 66 states have internal predecessors, (192), 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 89 [2022-02-10 02:25:35,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:25:35,746 INFO L225 Difference]: With dead ends: 205 [2022-02-10 02:25:35,746 INFO L226 Difference]: Without dead ends: 181 [2022-02-10 02:25:35,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4307 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1282, Invalid=12998, Unknown=0, NotChecked=0, Total=14280 [2022-02-10 02:25:35,749 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 451 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 1583 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 1687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:25:35,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [451 Valid, 1587 Invalid, 1687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1583 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:25:35,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-02-10 02:25:35,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 121. [2022-02-10 02:25:35,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.0916666666666666) internal successors, (131), 120 states have internal predecessors, (131), 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) [2022-02-10 02:25:35,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 131 transitions. [2022-02-10 02:25:35,768 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 131 transitions. Word has length 89 [2022-02-10 02:25:35,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:25:35,769 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 131 transitions. [2022-02-10 02:25:35,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.909090909090909) internal successors, (192), 66 states have internal predecessors, (192), 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) [2022-02-10 02:25:35,769 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 131 transitions. [2022-02-10 02:25:35,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-02-10 02:25:35,769 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:25:35,769 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:25:35,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-02-10 02:25:35,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:25:35,984 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:25:35,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:25:35,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1602020111, now seen corresponding path program 17 times [2022-02-10 02:25:35,985 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:25:35,985 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41661761] [2022-02-10 02:25:35,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:25:35,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:25:36,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:25:36,364 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 2 proven. 52 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-02-10 02:25:36,365 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:25:36,365 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41661761] [2022-02-10 02:25:36,365 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41661761] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:25:36,365 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520180694] [2022-02-10 02:25:36,365 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:25:36,365 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:25:36,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:25:36,366 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:25:36,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-02-10 02:25:36,420 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 02:25:36,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:25:36,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:25:36,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:25:37,329 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:37,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:25:38,375 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:38,376 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520180694] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:25:38,376 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:25:38,376 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 28, 27] total 65 [2022-02-10 02:25:38,376 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409979082] [2022-02-10 02:25:38,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:25:38,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-02-10 02:25:38,376 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:25:38,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-02-10 02:25:38,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=3846, Unknown=0, NotChecked=0, Total=4160 [2022-02-10 02:25:38,378 INFO L87 Difference]: Start difference. First operand 121 states and 131 transitions. Second operand has 65 states, 65 states have (on average 2.9692307692307693) internal successors, (193), 65 states have internal predecessors, (193), 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) [2022-02-10 02:25:40,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:25:40,189 INFO L93 Difference]: Finished difference Result 168 states and 185 transitions. [2022-02-10 02:25:40,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-02-10 02:25:40,189 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.9692307692307693) internal successors, (193), 65 states have internal predecessors, (193), 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 91 [2022-02-10 02:25:40,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:25:40,189 INFO L225 Difference]: With dead ends: 168 [2022-02-10 02:25:40,189 INFO L226 Difference]: Without dead ends: 0 [2022-02-10 02:25:40,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 141 SyntacticMatches, 4 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3929 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1117, Invalid=12455, Unknown=0, NotChecked=0, Total=13572 [2022-02-10 02:25:40,192 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 322 mSDsluCounter, 1321 mSDsCounter, 0 mSdLazyCounter, 1373 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 1310 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:25:40,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 1310 Invalid, 1448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1373 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:25:40,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-10 02:25:40,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-10 02:25:40,192 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) [2022-02-10 02:25:40,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-10 02:25:40,192 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 91 [2022-02-10 02:25:40,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:25:40,192 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-10 02:25:40,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.9692307692307693) internal successors, (193), 65 states have internal predecessors, (193), 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) [2022-02-10 02:25:40,193 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-10 02:25:40,193 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-10 02:25:40,194 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-02-10 02:25:40,195 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-02-10 02:25:40,195 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-02-10 02:25:40,211 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-02-10 02:25:40,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:25:40,405 INFO L732 BasicCegarLoop]: Path program histogram: [17, 1, 1, 1] [2022-02-10 02:25:40,406 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-10 02:25:40,406 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-10 02:25:40,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.02 02:25:40 BasicIcfg [2022-02-10 02:25:40,408 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-10 02:25:40,408 INFO L158 Benchmark]: Toolchain (without parser) took 77374.01ms. Allocated memory was 222.3MB in the beginning and 2.4GB in the end (delta: 2.1GB). Free memory was 166.8MB in the beginning and 796.7MB in the end (delta: -629.9MB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. [2022-02-10 02:25:40,408 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 222.3MB. Free memory is still 183.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-10 02:25:40,408 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.96ms. Allocated memory was 222.3MB in the beginning and 287.3MB in the end (delta: 65.0MB). Free memory was 166.6MB in the beginning and 259.7MB in the end (delta: -93.1MB). Peak memory consumption was 9.1MB. Max. memory is 8.0GB. [2022-02-10 02:25:40,409 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.50ms. Allocated memory is still 287.3MB. Free memory was 259.3MB in the beginning and 257.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-10 02:25:40,409 INFO L158 Benchmark]: Boogie Preprocessor took 14.76ms. Allocated memory is still 287.3MB. Free memory was 257.6MB in the beginning and 256.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-10 02:25:40,409 INFO L158 Benchmark]: RCFGBuilder took 386.01ms. Allocated memory is still 287.3MB. Free memory was 256.6MB in the beginning and 243.3MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-02-10 02:25:40,409 INFO L158 Benchmark]: TraceAbstraction took 76686.02ms. Allocated memory was 287.3MB in the beginning and 2.4GB in the end (delta: 2.1GB). Free memory was 242.5MB in the beginning and 796.7MB in the end (delta: -554.2MB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. [2022-02-10 02:25:40,410 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 222.3MB. Free memory is still 183.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 235.96ms. Allocated memory was 222.3MB in the beginning and 287.3MB in the end (delta: 65.0MB). Free memory was 166.6MB in the beginning and 259.7MB in the end (delta: -93.1MB). Peak memory consumption was 9.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 43.50ms. Allocated memory is still 287.3MB. Free memory was 259.3MB in the beginning and 257.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 14.76ms. Allocated memory is still 287.3MB. Free memory was 257.6MB in the beginning and 256.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 386.01ms. Allocated memory is still 287.3MB. Free memory was 256.6MB in the beginning and 243.3MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 76686.02ms. Allocated memory was 287.3MB in the beginning and 2.4GB in the end (delta: 2.1GB). Free memory was 242.5MB in the beginning and 796.7MB in the end (delta: -554.2MB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Independence queries for same thread: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 78]: 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 5 procedures, 98 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 76.6s, OverallIterations: 20, TraceHistogramMax: 5, PathProgramHistogramMax: 17, EmptinessCheckTime: 1.0s, AutomataDifference: 37.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, PartialOrderReductionTime: 3.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7887 SdHoareTripleChecker+Valid, 8.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7887 mSDsluCounter, 25524 SdHoareTripleChecker+Invalid, 6.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 25873 mSDsCounter, 2032 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 23051 IncrementalHoareTripleChecker+Invalid, 25083 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2032 mSolverCounterUnsat, 1400 mSDtfsCounter, 23051 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4230 GetRequests, 2329 SyntacticMatches, 46 SemanticMatches, 1855 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69175 ImplicationChecksByTransitivity, 42.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55971occurred in iteration=0, InterpolantAutomatonStates: 1315, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 20 MinimizatonAttempts, 2310 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 29.0s InterpolantComputationTime, 2984 NumberOfCodeBlocks, 2966 NumberOfCodeBlocksAsserted, 64 NumberOfCheckSat, 4358 ConstructedInterpolants, 0 QuantifiedInterpolants, 35618 SizeOfPredicates, 275 NumberOfNonLiveVariables, 3014 ConjunctsInSsa, 557 ConjunctsInUnsatCore, 56 InterpolantComputations, 2 PerfectInterpolantSequences, 43/1248 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! [2022-02-10 02:25:40,433 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...