/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-lamport.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-15 11:35:15,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-15 11:35:15,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-15 11:35:15,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-15 11:35:16,045 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-15 11:35:16,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-15 11:35:16,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-15 11:35:16,048 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-02-15 11:35:16,077 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-15 11:35:16,077 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-15 11:35:16,077 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-15 11:35:16,077 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-15 11:35:16,078 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-15 11:35:16,078 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-15 11:35:16,078 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-15 11:35:16,079 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-15 11:35:16,079 INFO L138 SettingsManager]: * Use SBE=true [2022-02-15 11:35:16,079 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-15 11:35:16,079 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-15 11:35:16,079 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-15 11:35:16,079 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-15 11:35:16,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-15 11:35:16,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-15 11:35:16,080 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-15 11:35:16,080 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-15 11:35:16,080 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-15 11:35:16,080 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-15 11:35:16,080 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-15 11:35:16,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-15 11:35:16,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-15 11:35:16,080 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-15 11:35:16,081 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-15 11:35:16,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-15 11:35:16,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 11:35:16,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-15 11:35:16,081 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-15 11:35:16,081 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-15 11:35:16,081 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-15 11:35:16,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-15 11:35:16,082 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-15 11:35:16,082 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-15 11:35:16,082 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-15 11:35:16,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-15 11:35:16,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-15 11:35:16,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-15 11:35:16,353 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-15 11:35:16,354 INFO L275 PluginConnector]: CDTParser initialized [2022-02-15 11:35:16,355 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-lamport.wvr.c [2022-02-15 11:35:16,419 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b4c8ca69/ac261e0004ca462ba9cf837c8c5cc994/FLAG7da8c3748 [2022-02-15 11:35:16,867 INFO L306 CDTParser]: Found 1 translation units. [2022-02-15 11:35:16,868 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-lamport.wvr.c [2022-02-15 11:35:16,874 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b4c8ca69/ac261e0004ca462ba9cf837c8c5cc994/FLAG7da8c3748 [2022-02-15 11:35:17,255 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b4c8ca69/ac261e0004ca462ba9cf837c8c5cc994 [2022-02-15 11:35:17,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-15 11:35:17,262 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-15 11:35:17,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-15 11:35:17,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-15 11:35:17,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-15 11:35:17,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 11:35:17" (1/1) ... [2022-02-15 11:35:17,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f9d0ac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:35:17, skipping insertion in model container [2022-02-15 11:35:17,269 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 11:35:17" (1/1) ... [2022-02-15 11:35:17,274 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-15 11:35:17,299 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-15 11:35:17,556 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/parallel-lamport.wvr.c[4210,4223] [2022-02-15 11:35:17,568 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 11:35:17,578 INFO L203 MainTranslator]: Completed pre-run [2022-02-15 11:35:17,616 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/parallel-lamport.wvr.c[4210,4223] [2022-02-15 11:35:17,619 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 11:35:17,633 INFO L208 MainTranslator]: Completed translation [2022-02-15 11:35:17,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:35:17 WrapperNode [2022-02-15 11:35:17,635 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-15 11:35:17,636 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-15 11:35:17,636 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-15 11:35:17,636 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-15 11:35:17,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:35:17" (1/1) ... [2022-02-15 11:35:17,661 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:35:17" (1/1) ... [2022-02-15 11:35:17,696 INFO L137 Inliner]: procedures = 25, calls = 89, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 235 [2022-02-15 11:35:17,696 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-15 11:35:17,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-15 11:35:17,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-15 11:35:17,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-15 11:35:17,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:35:17" (1/1) ... [2022-02-15 11:35:17,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:35:17" (1/1) ... [2022-02-15 11:35:17,719 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:35:17" (1/1) ... [2022-02-15 11:35:17,720 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:35:17" (1/1) ... [2022-02-15 11:35:17,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:35:17" (1/1) ... [2022-02-15 11:35:17,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:35:17" (1/1) ... [2022-02-15 11:35:17,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:35:17" (1/1) ... [2022-02-15 11:35:17,749 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-15 11:35:17,750 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-15 11:35:17,750 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-15 11:35:17,750 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-15 11:35:17,753 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:35:17" (1/1) ... [2022-02-15 11:35:17,759 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 11:35:17,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:35:17,789 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) [2022-02-15 11:35:17,807 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 [2022-02-15 11:35:17,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-15 11:35:17,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-15 11:35:17,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-15 11:35:17,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-15 11:35:17,822 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-15 11:35:17,822 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-15 11:35:17,822 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-15 11:35:17,822 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-15 11:35:17,822 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-02-15 11:35:17,822 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-02-15 11:35:17,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-15 11:35:17,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-02-15 11:35:17,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-02-15 11:35:17,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-02-15 11:35:17,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-15 11:35:17,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-15 11:35:17,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-15 11:35:17,824 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-15 11:35:17,949 INFO L234 CfgBuilder]: Building ICFG [2022-02-15 11:35:17,950 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-15 11:35:18,265 INFO L275 CfgBuilder]: Performing block encoding [2022-02-15 11:35:18,337 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-15 11:35:18,337 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-15 11:35:18,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 11:35:18 BoogieIcfgContainer [2022-02-15 11:35:18,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-15 11:35:18,351 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-15 11:35:18,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-15 11:35:18,355 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-15 11:35:18,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 11:35:17" (1/3) ... [2022-02-15 11:35:18,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a151ee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 11:35:18, skipping insertion in model container [2022-02-15 11:35:18,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:35:17" (2/3) ... [2022-02-15 11:35:18,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a151ee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 11:35:18, skipping insertion in model container [2022-02-15 11:35:18,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 11:35:18" (3/3) ... [2022-02-15 11:35:18,357 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-lamport.wvr.c [2022-02-15 11:35:18,361 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-15 11:35:18,362 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-15 11:35:18,362 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-15 11:35:18,362 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-15 11:35:18,403 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,403 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,403 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,404 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,404 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,404 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,404 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,405 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,405 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,405 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,405 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,406 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,406 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,406 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,406 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,407 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,407 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,407 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,408 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,408 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,408 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,411 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,412 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,412 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,413 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,413 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,414 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,414 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,414 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,414 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,415 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,415 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,415 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,416 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,416 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,416 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,417 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,418 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,419 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,419 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,419 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,420 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,420 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,420 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,420 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,421 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,421 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,421 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,424 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,424 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,424 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,424 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,425 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,425 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,426 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,426 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,426 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,426 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,426 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,427 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,427 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,427 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,427 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,427 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:35:18,431 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-02-15 11:35:18,471 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-15 11:35:18,478 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 [2022-02-15 11:35:18,478 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-02-15 11:35:18,490 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 189 places, 186 transitions, 396 flow [2022-02-15 11:35:18,724 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5515 states, 5514 states have (on average 3.2183532825535) internal successors, (17746), 5514 states have internal predecessors, (17746), 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) [2022-02-15 11:35:18,744 INFO L276 IsEmpty]: Start isEmpty. Operand has 5515 states, 5514 states have (on average 3.2183532825535) internal successors, (17746), 5514 states have internal predecessors, (17746), 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) [2022-02-15 11:35:18,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-02-15 11:35:18,795 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:35:18,796 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:35:18,797 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:35:18,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:35:18,806 INFO L85 PathProgramCache]: Analyzing trace with hash -62683804, now seen corresponding path program 1 times [2022-02-15 11:35:18,814 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:35:18,816 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844828853] [2022-02-15 11:35:18,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:35:18,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:35:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:35:19,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:35:19,102 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:35:19,102 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844828853] [2022-02-15 11:35:19,103 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844828853] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:35:19,104 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 11:35:19,107 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-15 11:35:19,114 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752811406] [2022-02-15 11:35:19,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:35:19,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-15 11:35:19,119 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:35:19,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-15 11:35:19,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-15 11:35:19,184 INFO L87 Difference]: Start difference. First operand has 5515 states, 5514 states have (on average 3.2183532825535) internal successors, (17746), 5514 states have internal predecessors, (17746), 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 77.0) internal successors, (154), 2 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) [2022-02-15 11:35:19,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:35:19,380 INFO L93 Difference]: Finished difference Result 5515 states and 17740 transitions. [2022-02-15 11:35:19,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-15 11:35:19,383 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 77.0) internal successors, (154), 2 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) Word has length 154 [2022-02-15 11:35:19,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:35:19,466 INFO L225 Difference]: With dead ends: 5515 [2022-02-15 11:35:19,466 INFO L226 Difference]: Without dead ends: 5510 [2022-02-15 11:35:19,468 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 [2022-02-15 11:35:19,471 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 11:35:19,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 149 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 11:35:19,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5510 states. [2022-02-15 11:35:19,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5510 to 5510. [2022-02-15 11:35:19,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5510 states, 5509 states have (on average 3.21927754583409) internal successors, (17735), 5509 states have internal predecessors, (17735), 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) [2022-02-15 11:35:19,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5510 states to 5510 states and 17735 transitions. [2022-02-15 11:35:19,796 INFO L78 Accepts]: Start accepts. Automaton has 5510 states and 17735 transitions. Word has length 154 [2022-02-15 11:35:19,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:35:19,798 INFO L470 AbstractCegarLoop]: Abstraction has 5510 states and 17735 transitions. [2022-02-15 11:35:19,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 77.0) internal successors, (154), 2 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) [2022-02-15 11:35:19,800 INFO L276 IsEmpty]: Start isEmpty. Operand 5510 states and 17735 transitions. [2022-02-15 11:35:19,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-02-15 11:35:19,824 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:35:19,825 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:35:19,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-15 11:35:19,826 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:35:19,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:35:19,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1271926043, now seen corresponding path program 1 times [2022-02-15 11:35:19,828 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:35:19,828 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622253252] [2022-02-15 11:35:19,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:35:19,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:35:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:35:20,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:35:20,312 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:35:20,312 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622253252] [2022-02-15 11:35:20,312 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622253252] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:35:20,312 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 11:35:20,313 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-15 11:35:20,313 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962852922] [2022-02-15 11:35:20,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:35:20,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-15 11:35:20,314 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:35:20,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-15 11:35:20,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-02-15 11:35:20,315 INFO L87 Difference]: Start difference. First operand 5510 states and 17735 transitions. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 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) [2022-02-15 11:35:20,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:35:20,631 INFO L93 Difference]: Finished difference Result 6729 states and 21181 transitions. [2022-02-15 11:35:20,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-15 11:35:20,632 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 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) Word has length 154 [2022-02-15 11:35:20,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:35:20,672 INFO L225 Difference]: With dead ends: 6729 [2022-02-15 11:35:20,672 INFO L226 Difference]: Without dead ends: 5516 [2022-02-15 11:35:20,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-02-15 11:35:20,677 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 414 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 11:35:20,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [414 Valid, 564 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 11:35:20,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5516 states. [2022-02-15 11:35:20,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5516 to 5511. [2022-02-15 11:35:20,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5511 states, 5510 states have (on average 3.218874773139746) internal successors, (17736), 5510 states have internal predecessors, (17736), 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) [2022-02-15 11:35:20,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5511 states to 5511 states and 17736 transitions. [2022-02-15 11:35:20,891 INFO L78 Accepts]: Start accepts. Automaton has 5511 states and 17736 transitions. Word has length 154 [2022-02-15 11:35:20,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:35:20,893 INFO L470 AbstractCegarLoop]: Abstraction has 5511 states and 17736 transitions. [2022-02-15 11:35:20,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 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) [2022-02-15 11:35:20,894 INFO L276 IsEmpty]: Start isEmpty. Operand 5511 states and 17736 transitions. [2022-02-15 11:35:20,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-02-15 11:35:20,912 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:35:20,912 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:35:20,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-15 11:35:20,913 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:35:20,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:35:20,914 INFO L85 PathProgramCache]: Analyzing trace with hash -771383289, now seen corresponding path program 1 times [2022-02-15 11:35:20,914 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:35:20,915 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337303147] [2022-02-15 11:35:20,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:35:20,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:35:21,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:35:21,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 11:35:21,059 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:35:21,059 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337303147] [2022-02-15 11:35:21,060 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337303147] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:35:21,060 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 11:35:21,060 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-15 11:35:21,060 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118321985] [2022-02-15 11:35:21,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:35:21,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-15 11:35:21,061 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:35:21,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-15 11:35:21,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-15 11:35:21,061 INFO L87 Difference]: Start difference. First operand 5511 states and 17736 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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) [2022-02-15 11:35:21,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:35:21,161 INFO L93 Difference]: Finished difference Result 5511 states and 17646 transitions. [2022-02-15 11:35:21,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-15 11:35:21,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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 161 [2022-02-15 11:35:21,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:35:21,209 INFO L225 Difference]: With dead ends: 5511 [2022-02-15 11:35:21,209 INFO L226 Difference]: Without dead ends: 5511 [2022-02-15 11:35:21,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-15 11:35:21,216 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 19 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 11:35:21,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 305 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 11:35:21,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5511 states. [2022-02-15 11:35:21,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5511 to 5511. [2022-02-15 11:35:21,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5511 states, 5510 states have (on average 3.202540834845735) internal successors, (17646), 5510 states have internal predecessors, (17646), 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) [2022-02-15 11:35:21,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5511 states to 5511 states and 17646 transitions. [2022-02-15 11:35:21,468 INFO L78 Accepts]: Start accepts. Automaton has 5511 states and 17646 transitions. Word has length 161 [2022-02-15 11:35:21,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:35:21,469 INFO L470 AbstractCegarLoop]: Abstraction has 5511 states and 17646 transitions. [2022-02-15 11:35:21,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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) [2022-02-15 11:35:21,470 INFO L276 IsEmpty]: Start isEmpty. Operand 5511 states and 17646 transitions. [2022-02-15 11:35:21,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-02-15 11:35:21,485 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:35:21,485 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:35:21,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-15 11:35:21,486 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:35:21,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:35:21,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1328137583, now seen corresponding path program 2 times [2022-02-15 11:35:21,488 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:35:21,488 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103021448] [2022-02-15 11:35:21,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:35:21,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:35:21,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:35:22,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:35:22,257 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:35:22,257 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103021448] [2022-02-15 11:35:22,257 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103021448] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:35:22,257 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344131434] [2022-02-15 11:35:22,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 11:35:22,258 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:35:22,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:35:22,260 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) [2022-02-15 11:35:22,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-15 11:35:22,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-02-15 11:35:22,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:35:22,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 38 conjunts are in the unsatisfiable core [2022-02-15 11:35:22,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:35:22,597 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-15 11:35:22,696 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-15 11:35:22,697 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-15 11:35:23,300 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 26 [2022-02-15 11:35:23,438 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:35:23,438 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:35:23,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 11:35:23,477 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 11:35:23,477 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344131434] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:35:23,477 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 11:35:23,478 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [23] total 37 [2022-02-15 11:35:23,478 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980091155] [2022-02-15 11:35:23,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:35:23,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 11:35:23,479 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:35:23,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 11:35:23,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1228, Unknown=0, NotChecked=0, Total=1332 [2022-02-15 11:35:23,480 INFO L87 Difference]: Start difference. First operand 5511 states and 17646 transitions. Second operand has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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) [2022-02-15 11:35:24,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:35:24,684 INFO L93 Difference]: Finished difference Result 8047 states and 25454 transitions. [2022-02-15 11:35:24,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-15 11:35:24,684 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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 161 [2022-02-15 11:35:24,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:35:24,716 INFO L225 Difference]: With dead ends: 8047 [2022-02-15 11:35:24,716 INFO L226 Difference]: Without dead ends: 7183 [2022-02-15 11:35:24,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=318, Invalid=2874, Unknown=0, NotChecked=0, Total=3192 [2022-02-15 11:35:24,721 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 904 mSDsluCounter, 2626 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 2482 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 234 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 11:35:24,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [904 Valid, 2482 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1010 Invalid, 0 Unknown, 234 Unchecked, 0.5s Time] [2022-02-15 11:35:24,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7183 states. [2022-02-15 11:35:24,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7183 to 5940. [2022-02-15 11:35:24,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5940 states, 5939 states have (on average 3.184711230846944) internal successors, (18914), 5939 states have internal predecessors, (18914), 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) [2022-02-15 11:35:25,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5940 states to 5940 states and 18914 transitions. [2022-02-15 11:35:25,006 INFO L78 Accepts]: Start accepts. Automaton has 5940 states and 18914 transitions. Word has length 161 [2022-02-15 11:35:25,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:35:25,006 INFO L470 AbstractCegarLoop]: Abstraction has 5940 states and 18914 transitions. [2022-02-15 11:35:25,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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) [2022-02-15 11:35:25,006 INFO L276 IsEmpty]: Start isEmpty. Operand 5940 states and 18914 transitions. [2022-02-15 11:35:25,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-02-15 11:35:25,025 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:35:25,025 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:35:25,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-15 11:35:25,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:35:25,248 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:35:25,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:35:25,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1776409103, now seen corresponding path program 3 times [2022-02-15 11:35:25,249 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:35:25,249 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734272540] [2022-02-15 11:35:25,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:35:25,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:35:25,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:35:25,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:35:25,727 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:35:25,727 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734272540] [2022-02-15 11:35:25,727 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734272540] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:35:25,727 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103586508] [2022-02-15 11:35:25,727 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 11:35:25,727 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:35:25,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:35:25,729 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) [2022-02-15 11:35:25,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-15 11:35:25,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-02-15 11:35:25,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:35:25,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 36 conjunts are in the unsatisfiable core [2022-02-15 11:35:25,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:35:25,923 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-15 11:35:26,013 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-15 11:35:26,013 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-15 11:35:26,604 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:35:26,825 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:35:26,825 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:35:26,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 11:35:26,864 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 11:35:26,865 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103586508] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:35:26,865 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 11:35:26,865 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [21] total 36 [2022-02-15 11:35:26,865 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968796995] [2022-02-15 11:35:26,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:35:26,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 11:35:26,866 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:35:26,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 11:35:26,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1172, Unknown=0, NotChecked=0, Total=1260 [2022-02-15 11:35:26,867 INFO L87 Difference]: Start difference. First operand 5940 states and 18914 transitions. Second operand has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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) [2022-02-15 11:35:27,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:35:27,795 INFO L93 Difference]: Finished difference Result 7658 states and 24239 transitions. [2022-02-15 11:35:27,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-15 11:35:27,796 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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 161 [2022-02-15 11:35:27,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:35:27,823 INFO L225 Difference]: With dead ends: 7658 [2022-02-15 11:35:27,823 INFO L226 Difference]: Without dead ends: 7277 [2022-02-15 11:35:27,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=301, Invalid=2779, Unknown=0, NotChecked=0, Total=3080 [2022-02-15 11:35:27,825 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 835 mSDsluCounter, 2470 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 2403 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 175 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 11:35:27,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [835 Valid, 2403 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 775 Invalid, 0 Unknown, 175 Unchecked, 0.4s Time] [2022-02-15 11:35:27,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7277 states. [2022-02-15 11:35:28,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7277 to 6034. [2022-02-15 11:35:28,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6034 states, 6033 states have (on average 3.179678435272667) internal successors, (19183), 6033 states have internal predecessors, (19183), 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) [2022-02-15 11:35:28,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6034 states to 6034 states and 19183 transitions. [2022-02-15 11:35:28,069 INFO L78 Accepts]: Start accepts. Automaton has 6034 states and 19183 transitions. Word has length 161 [2022-02-15 11:35:28,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:35:28,070 INFO L470 AbstractCegarLoop]: Abstraction has 6034 states and 19183 transitions. [2022-02-15 11:35:28,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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) [2022-02-15 11:35:28,070 INFO L276 IsEmpty]: Start isEmpty. Operand 6034 states and 19183 transitions. [2022-02-15 11:35:28,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-02-15 11:35:28,085 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:35:28,086 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:35:28,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-15 11:35:28,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:35:28,312 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:35:28,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:35:28,312 INFO L85 PathProgramCache]: Analyzing trace with hash 187341985, now seen corresponding path program 4 times [2022-02-15 11:35:28,312 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:35:28,312 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529299983] [2022-02-15 11:35:28,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:35:28,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:35:28,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:35:29,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:35:29,154 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:35:29,154 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529299983] [2022-02-15 11:35:29,154 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529299983] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:35:29,155 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497082493] [2022-02-15 11:35:29,155 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 11:35:29,155 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:35:29,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:35:29,160 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) [2022-02-15 11:35:29,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-15 11:35:29,266 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 11:35:29,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:35:29,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 49 conjunts are in the unsatisfiable core [2022-02-15 11:35:29,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:35:29,981 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-02-15 11:35:30,558 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-15 11:35:30,654 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-15 11:35:30,921 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-15 11:35:31,199 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-02-15 11:35:31,200 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-02-15 11:35:31,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:35:31,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:35:35,250 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:35:35,251 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 50 [2022-02-15 11:35:35,265 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-02-15 11:35:35,266 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 194 treesize of output 185 [2022-02-15 11:35:35,279 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-02-15 11:35:35,280 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 178 treesize of output 130 [2022-02-15 11:35:35,298 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-02-15 11:35:35,299 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 130 treesize of output 106 [2022-02-15 11:35:35,312 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-02-15 11:35:35,313 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 46 [2022-02-15 11:35:35,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:35:35,740 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497082493] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 11:35:35,740 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 11:35:35,740 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 22] total 65 [2022-02-15 11:35:35,740 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798488531] [2022-02-15 11:35:35,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 11:35:35,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-02-15 11:35:35,741 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:35:35,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-02-15 11:35:35,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=491, Invalid=3515, Unknown=154, NotChecked=0, Total=4160 [2022-02-15 11:35:35,743 INFO L87 Difference]: Start difference. First operand 6034 states and 19183 transitions. Second operand has 65 states, 65 states have (on average 5.8307692307692305) internal successors, (379), 65 states have internal predecessors, (379), 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) [2022-02-15 11:35:43,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:35:43,455 INFO L93 Difference]: Finished difference Result 19527 states and 61282 transitions. [2022-02-15 11:35:43,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-15 11:35:43,455 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 5.8307692307692305) internal successors, (379), 65 states have internal predecessors, (379), 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 161 [2022-02-15 11:35:43,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:35:43,529 INFO L225 Difference]: With dead ends: 19527 [2022-02-15 11:35:43,529 INFO L226 Difference]: Without dead ends: 18529 [2022-02-15 11:35:43,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 295 SyntacticMatches, 12 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 3632 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=3591, Invalid=12505, Unknown=160, NotChecked=0, Total=16256 [2022-02-15 11:35:43,534 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 5663 mSDsluCounter, 6915 mSDsCounter, 0 mSdLazyCounter, 2523 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5663 SdHoareTripleChecker+Valid, 6136 SdHoareTripleChecker+Invalid, 4163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 2523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1495 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-15 11:35:43,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5663 Valid, 6136 Invalid, 4163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 2523 Invalid, 0 Unknown, 1495 Unchecked, 1.4s Time] [2022-02-15 11:35:43,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18529 states. [2022-02-15 11:35:43,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18529 to 8557. [2022-02-15 11:35:43,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8557 states, 8556 states have (on average 3.1740299205236093) internal successors, (27157), 8556 states have internal predecessors, (27157), 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) [2022-02-15 11:35:43,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8557 states to 8557 states and 27157 transitions. [2022-02-15 11:35:43,943 INFO L78 Accepts]: Start accepts. Automaton has 8557 states and 27157 transitions. Word has length 161 [2022-02-15 11:35:43,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:35:43,944 INFO L470 AbstractCegarLoop]: Abstraction has 8557 states and 27157 transitions. [2022-02-15 11:35:43,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 5.8307692307692305) internal successors, (379), 65 states have internal predecessors, (379), 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) [2022-02-15 11:35:43,944 INFO L276 IsEmpty]: Start isEmpty. Operand 8557 states and 27157 transitions. [2022-02-15 11:35:43,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-02-15 11:35:43,967 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:35:43,967 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:35:43,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-15 11:35:44,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:35:44,184 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:35:44,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:35:44,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1344523863, now seen corresponding path program 5 times [2022-02-15 11:35:44,185 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:35:44,185 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615599546] [2022-02-15 11:35:44,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:35:44,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:35:44,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:35:44,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:35:44,910 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:35:44,910 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615599546] [2022-02-15 11:35:44,910 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615599546] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:35:44,910 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536143449] [2022-02-15 11:35:44,911 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 11:35:44,911 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:35:44,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:35:44,916 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) [2022-02-15 11:35:44,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-15 11:35:45,021 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 11:35:45,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:35:45,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 50 conjunts are in the unsatisfiable core [2022-02-15 11:35:45,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:35:46,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-15 11:35:46,201 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2022-02-15 11:35:46,680 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-02-15 11:35:46,681 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 13 [2022-02-15 11:35:46,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:35:46,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:35:47,509 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:35:47,510 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 72 [2022-02-15 11:35:47,515 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2022-02-15 11:35:47,520 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2022-02-15 11:35:49,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:35:49,111 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536143449] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 11:35:49,111 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 11:35:49,111 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 26, 26] total 71 [2022-02-15 11:35:49,111 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290457382] [2022-02-15 11:35:49,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 11:35:49,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-02-15 11:35:49,112 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:35:49,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-02-15 11:35:49,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=4699, Unknown=13, NotChecked=0, Total=4970 [2022-02-15 11:35:49,114 INFO L87 Difference]: Start difference. First operand 8557 states and 27157 transitions. Second operand has 71 states, 71 states have (on average 5.845070422535211) internal successors, (415), 71 states have internal predecessors, (415), 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) [2022-02-15 11:35:58,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:35:58,551 INFO L93 Difference]: Finished difference Result 25432 states and 80331 transitions. [2022-02-15 11:35:58,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2022-02-15 11:35:58,551 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 5.845070422535211) internal successors, (415), 71 states have internal predecessors, (415), 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 161 [2022-02-15 11:35:58,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:35:58,633 INFO L225 Difference]: With dead ends: 25432 [2022-02-15 11:35:58,633 INFO L226 Difference]: Without dead ends: 25280 [2022-02-15 11:35:58,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 302 SyntacticMatches, 58 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 10629 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=3389, Invalid=22657, Unknown=36, NotChecked=0, Total=26082 [2022-02-15 11:35:58,640 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 5359 mSDsluCounter, 11634 mSDsCounter, 0 mSdLazyCounter, 3713 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5359 SdHoareTripleChecker+Valid, 10232 SdHoareTripleChecker+Invalid, 6244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 3713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2224 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-15 11:35:58,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5359 Valid, 10232 Invalid, 6244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 3713 Invalid, 0 Unknown, 2224 Unchecked, 1.6s Time] [2022-02-15 11:35:58,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25280 states. [2022-02-15 11:35:59,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25280 to 12887. [2022-02-15 11:35:59,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12887 states, 12886 states have (on average 3.2070464069532827) internal successors, (41326), 12886 states have internal predecessors, (41326), 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) [2022-02-15 11:35:59,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12887 states to 12887 states and 41326 transitions. [2022-02-15 11:35:59,170 INFO L78 Accepts]: Start accepts. Automaton has 12887 states and 41326 transitions. Word has length 161 [2022-02-15 11:35:59,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:35:59,170 INFO L470 AbstractCegarLoop]: Abstraction has 12887 states and 41326 transitions. [2022-02-15 11:35:59,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 5.845070422535211) internal successors, (415), 71 states have internal predecessors, (415), 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) [2022-02-15 11:35:59,171 INFO L276 IsEmpty]: Start isEmpty. Operand 12887 states and 41326 transitions. [2022-02-15 11:35:59,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-02-15 11:35:59,204 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:35:59,204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:35:59,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-15 11:35:59,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:35:59,428 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:35:59,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:35:59,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1226402779, now seen corresponding path program 6 times [2022-02-15 11:35:59,428 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:35:59,428 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870591375] [2022-02-15 11:35:59,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:35:59,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:35:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:35:59,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:35:59,775 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:35:59,775 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870591375] [2022-02-15 11:35:59,775 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870591375] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:35:59,775 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324045893] [2022-02-15 11:35:59,775 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 11:35:59,776 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:35:59,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:35:59,777 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) [2022-02-15 11:35:59,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-15 11:35:59,881 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-02-15 11:35:59,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:35:59,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-15 11:35:59,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:35:59,917 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-15 11:35:59,992 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-15 11:35:59,992 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-15 11:36:00,432 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:36:00,580 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:36:00,580 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:36:00,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 11:36:00,614 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 11:36:00,614 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324045893] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:36:00,614 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 11:36:00,615 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [21] total 37 [2022-02-15 11:36:00,615 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403604948] [2022-02-15 11:36:00,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:36:00,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-15 11:36:00,615 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:36:00,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-15 11:36:00,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1240, Unknown=0, NotChecked=0, Total=1332 [2022-02-15 11:36:00,616 INFO L87 Difference]: Start difference. First operand 12887 states and 41326 transitions. Second operand has 21 states, 21 states have (on average 7.666666666666667) internal successors, (161), 21 states have internal predecessors, (161), 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) [2022-02-15 11:36:01,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:36:01,619 INFO L93 Difference]: Finished difference Result 15828 states and 50662 transitions. [2022-02-15 11:36:01,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-15 11:36:01,619 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 7.666666666666667) internal successors, (161), 21 states have internal predecessors, (161), 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 161 [2022-02-15 11:36:01,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:36:01,672 INFO L225 Difference]: With dead ends: 15828 [2022-02-15 11:36:01,672 INFO L226 Difference]: Without dead ends: 15250 [2022-02-15 11:36:01,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=382, Invalid=3400, Unknown=0, NotChecked=0, Total=3782 [2022-02-15 11:36:01,674 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 913 mSDsluCounter, 3050 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 2896 SdHoareTripleChecker+Invalid, 1499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 365 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 11:36:01,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [913 Valid, 2896 Invalid, 1499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1085 Invalid, 0 Unknown, 365 Unchecked, 0.4s Time] [2022-02-15 11:36:01,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15250 states. [2022-02-15 11:36:01,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15250 to 13131. [2022-02-15 11:36:01,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13131 states, 13130 states have (on average 3.196953541507997) internal successors, (41976), 13130 states have internal predecessors, (41976), 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) [2022-02-15 11:36:02,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13131 states to 13131 states and 41976 transitions. [2022-02-15 11:36:02,193 INFO L78 Accepts]: Start accepts. Automaton has 13131 states and 41976 transitions. Word has length 161 [2022-02-15 11:36:02,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:36:02,194 INFO L470 AbstractCegarLoop]: Abstraction has 13131 states and 41976 transitions. [2022-02-15 11:36:02,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.666666666666667) internal successors, (161), 21 states have internal predecessors, (161), 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) [2022-02-15 11:36:02,194 INFO L276 IsEmpty]: Start isEmpty. Operand 13131 states and 41976 transitions. [2022-02-15 11:36:02,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-02-15 11:36:02,368 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:36:02,369 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:36:02,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-15 11:36:02,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:36:02,598 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:36:02,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:36:02,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1721766235, now seen corresponding path program 7 times [2022-02-15 11:36:02,599 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:36:02,599 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197010331] [2022-02-15 11:36:02,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:36:02,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:36:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:03,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:03,383 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:36:03,383 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197010331] [2022-02-15 11:36:03,383 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197010331] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:36:03,383 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143265225] [2022-02-15 11:36:03,383 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 11:36:03,383 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:36:03,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:36:03,388 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) [2022-02-15 11:36:03,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-15 11:36:03,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:03,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-15 11:36:03,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:36:04,745 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-02-15 11:36:04,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:04,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:36:05,038 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:36:05,038 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 36 [2022-02-15 11:36:05,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:05,935 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143265225] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 11:36:05,935 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 11:36:05,935 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 25, 20] total 64 [2022-02-15 11:36:05,935 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269134107] [2022-02-15 11:36:05,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 11:36:05,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-02-15 11:36:05,936 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:36:05,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-02-15 11:36:05,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=432, Invalid=3600, Unknown=0, NotChecked=0, Total=4032 [2022-02-15 11:36:05,938 INFO L87 Difference]: Start difference. First operand 13131 states and 41976 transitions. Second operand has 64 states, 64 states have (on average 6.0) internal successors, (384), 64 states have internal predecessors, (384), 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) [2022-02-15 11:36:10,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:36:10,867 INFO L93 Difference]: Finished difference Result 21815 states and 70086 transitions. [2022-02-15 11:36:10,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-02-15 11:36:10,867 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 6.0) internal successors, (384), 64 states have internal predecessors, (384), 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 161 [2022-02-15 11:36:10,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:36:10,917 INFO L225 Difference]: With dead ends: 21815 [2022-02-15 11:36:10,918 INFO L226 Difference]: Without dead ends: 21142 [2022-02-15 11:36:10,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 297 SyntacticMatches, 15 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 3799 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=2391, Invalid=11889, Unknown=0, NotChecked=0, Total=14280 [2022-02-15 11:36:10,919 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 5694 mSDsluCounter, 7258 mSDsCounter, 0 mSdLazyCounter, 3164 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5694 SdHoareTripleChecker+Valid, 6085 SdHoareTripleChecker+Invalid, 4783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 3164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1331 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-15 11:36:10,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5694 Valid, 6085 Invalid, 4783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 3164 Invalid, 0 Unknown, 1331 Unchecked, 1.3s Time] [2022-02-15 11:36:10,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21142 states. [2022-02-15 11:36:11,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21142 to 14433. [2022-02-15 11:36:11,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14433 states, 14432 states have (on average 3.2059312638580932) internal successors, (46268), 14432 states have internal predecessors, (46268), 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) [2022-02-15 11:36:11,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14433 states to 14433 states and 46268 transitions. [2022-02-15 11:36:11,351 INFO L78 Accepts]: Start accepts. Automaton has 14433 states and 46268 transitions. Word has length 161 [2022-02-15 11:36:11,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:36:11,351 INFO L470 AbstractCegarLoop]: Abstraction has 14433 states and 46268 transitions. [2022-02-15 11:36:11,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 6.0) internal successors, (384), 64 states have internal predecessors, (384), 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) [2022-02-15 11:36:11,351 INFO L276 IsEmpty]: Start isEmpty. Operand 14433 states and 46268 transitions. [2022-02-15 11:36:11,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-02-15 11:36:11,379 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:36:11,379 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:36:11,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-15 11:36:11,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:36:11,589 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:36:11,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:36:11,589 INFO L85 PathProgramCache]: Analyzing trace with hash 827938719, now seen corresponding path program 8 times [2022-02-15 11:36:11,589 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:36:11,589 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793490081] [2022-02-15 11:36:11,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:36:11,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:36:11,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:12,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:12,950 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:36:12,950 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793490081] [2022-02-15 11:36:12,951 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793490081] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:36:12,951 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077768980] [2022-02-15 11:36:12,951 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 11:36:12,951 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:36:12,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:36:12,952 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) [2022-02-15 11:36:12,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-15 11:36:13,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-02-15 11:36:13,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:36:13,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 38 conjunts are in the unsatisfiable core [2022-02-15 11:36:13,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:36:13,103 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-15 11:36:13,190 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-15 11:36:13,191 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-15 11:36:13,681 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:36:13,838 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:36:13,838 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:36:13,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 11:36:13,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 11:36:13,868 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077768980] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:36:13,868 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 11:36:13,868 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [33] total 48 [2022-02-15 11:36:13,868 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878015513] [2022-02-15 11:36:13,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:36:13,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 11:36:13,869 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:36:13,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 11:36:13,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=2106, Unknown=0, NotChecked=0, Total=2256 [2022-02-15 11:36:13,870 INFO L87 Difference]: Start difference. First operand 14433 states and 46268 transitions. Second operand has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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) [2022-02-15 11:36:14,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:36:14,829 INFO L93 Difference]: Finished difference Result 16270 states and 51984 transitions. [2022-02-15 11:36:14,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-15 11:36:14,830 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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 161 [2022-02-15 11:36:14,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:36:14,870 INFO L225 Difference]: With dead ends: 16270 [2022-02-15 11:36:14,870 INFO L226 Difference]: Without dead ends: 16235 [2022-02-15 11:36:14,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 970 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=377, Invalid=4315, Unknown=0, NotChecked=0, Total=4692 [2022-02-15 11:36:14,872 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 770 mSDsluCounter, 2909 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 2811 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 212 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 11:36:14,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [770 Valid, 2811 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 938 Invalid, 0 Unknown, 212 Unchecked, 0.3s Time] [2022-02-15 11:36:14,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16235 states. [2022-02-15 11:36:15,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16235 to 14443. [2022-02-15 11:36:15,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14443 states, 14442 states have (on average 3.204957762082814) internal successors, (46286), 14442 states have internal predecessors, (46286), 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) [2022-02-15 11:36:15,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14443 states to 14443 states and 46286 transitions. [2022-02-15 11:36:15,353 INFO L78 Accepts]: Start accepts. Automaton has 14443 states and 46286 transitions. Word has length 161 [2022-02-15 11:36:15,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:36:15,354 INFO L470 AbstractCegarLoop]: Abstraction has 14443 states and 46286 transitions. [2022-02-15 11:36:15,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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) [2022-02-15 11:36:15,354 INFO L276 IsEmpty]: Start isEmpty. Operand 14443 states and 46286 transitions. [2022-02-15 11:36:15,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-02-15 11:36:15,381 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:36:15,381 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:36:15,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-15 11:36:15,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:36:15,582 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:36:15,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:36:15,582 INFO L85 PathProgramCache]: Analyzing trace with hash -783542807, now seen corresponding path program 9 times [2022-02-15 11:36:15,583 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:36:15,583 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239187723] [2022-02-15 11:36:15,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:36:15,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:36:15,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:16,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:16,293 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:36:16,293 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239187723] [2022-02-15 11:36:16,294 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239187723] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:36:16,294 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764556760] [2022-02-15 11:36:16,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 11:36:16,294 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:36:16,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:36:16,295 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) [2022-02-15 11:36:16,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-15 11:36:16,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-02-15 11:36:16,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:36:16,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 47 conjunts are in the unsatisfiable core [2022-02-15 11:36:16,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:36:16,451 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-15 11:36:16,548 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-15 11:36:16,548 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-15 11:36:17,205 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:36:17,342 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:36:17,342 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:36:17,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 11:36:17,396 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 11:36:17,396 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764556760] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:36:17,396 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 11:36:17,396 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [26] total 44 [2022-02-15 11:36:17,397 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773119032] [2022-02-15 11:36:17,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:36:17,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-15 11:36:17,397 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:36:17,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-15 11:36:17,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1764, Unknown=0, NotChecked=0, Total=1892 [2022-02-15 11:36:17,398 INFO L87 Difference]: Start difference. First operand 14443 states and 46286 transitions. Second operand has 22 states, 22 states have (on average 7.318181818181818) internal successors, (161), 22 states have internal predecessors, (161), 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) [2022-02-15 11:36:18,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:36:18,545 INFO L93 Difference]: Finished difference Result 17591 states and 55752 transitions. [2022-02-15 11:36:18,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-15 11:36:18,545 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 7.318181818181818) internal successors, (161), 22 states have internal predecessors, (161), 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 161 [2022-02-15 11:36:18,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:36:18,594 INFO L225 Difference]: With dead ends: 17591 [2022-02-15 11:36:18,594 INFO L226 Difference]: Without dead ends: 16017 [2022-02-15 11:36:18,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 994 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=482, Invalid=4774, Unknown=0, NotChecked=0, Total=5256 [2022-02-15 11:36:18,596 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 1123 mSDsluCounter, 2844 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 2730 SdHoareTripleChecker+Invalid, 1556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 438 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 11:36:18,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1123 Valid, 2730 Invalid, 1556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1058 Invalid, 0 Unknown, 438 Unchecked, 0.4s Time] [2022-02-15 11:36:18,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16017 states. [2022-02-15 11:36:19,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16017 to 14198. [2022-02-15 11:36:19,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14198 states, 14197 states have (on average 3.206733817003592) internal successors, (45526), 14197 states have internal predecessors, (45526), 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) [2022-02-15 11:36:19,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14198 states to 14198 states and 45526 transitions. [2022-02-15 11:36:19,080 INFO L78 Accepts]: Start accepts. Automaton has 14198 states and 45526 transitions. Word has length 161 [2022-02-15 11:36:19,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:36:19,080 INFO L470 AbstractCegarLoop]: Abstraction has 14198 states and 45526 transitions. [2022-02-15 11:36:19,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.318181818181818) internal successors, (161), 22 states have internal predecessors, (161), 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) [2022-02-15 11:36:19,081 INFO L276 IsEmpty]: Start isEmpty. Operand 14198 states and 45526 transitions. [2022-02-15 11:36:19,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-02-15 11:36:19,114 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:36:19,114 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:36:19,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-02-15 11:36:19,327 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,SelfDestructingSolverStorable10 [2022-02-15 11:36:19,328 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:36:19,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:36:19,328 INFO L85 PathProgramCache]: Analyzing trace with hash 133833291, now seen corresponding path program 10 times [2022-02-15 11:36:19,328 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:36:19,329 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195434980] [2022-02-15 11:36:19,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:36:19,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:36:19,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:19,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:19,967 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:36:19,967 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195434980] [2022-02-15 11:36:19,967 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195434980] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:36:19,967 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756099060] [2022-02-15 11:36:19,967 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 11:36:19,967 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:36:19,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:36:19,969 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) [2022-02-15 11:36:19,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-15 11:36:20,071 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 11:36:20,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:36:20,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 38 conjunts are in the unsatisfiable core [2022-02-15 11:36:20,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:36:20,702 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-15 11:36:20,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:20,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:36:20,879 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-02-15 11:36:20,880 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2022-02-15 11:36:21,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:21,362 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756099060] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 11:36:21,362 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 11:36:21,362 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 20, 15] total 42 [2022-02-15 11:36:21,362 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116877459] [2022-02-15 11:36:21,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 11:36:21,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-02-15 11:36:21,363 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:36:21,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-02-15 11:36:21,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=1464, Unknown=0, NotChecked=0, Total=1722 [2022-02-15 11:36:21,364 INFO L87 Difference]: Start difference. First operand 14198 states and 45526 transitions. Second operand has 42 states, 42 states have (on average 7.880952380952381) internal successors, (331), 42 states have internal predecessors, (331), 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) [2022-02-15 11:36:23,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:36:23,787 INFO L93 Difference]: Finished difference Result 21091 states and 66225 transitions. [2022-02-15 11:36:23,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-15 11:36:23,787 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 7.880952380952381) internal successors, (331), 42 states have internal predecessors, (331), 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 161 [2022-02-15 11:36:23,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:36:23,834 INFO L225 Difference]: With dead ends: 21091 [2022-02-15 11:36:23,835 INFO L226 Difference]: Without dead ends: 19616 [2022-02-15 11:36:23,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 312 SyntacticMatches, 7 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 1988 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1633, Invalid=6557, Unknown=0, NotChecked=0, Total=8190 [2022-02-15 11:36:23,836 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 2040 mSDsluCounter, 4003 mSDsCounter, 0 mSdLazyCounter, 1319 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2040 SdHoareTripleChecker+Valid, 3753 SdHoareTripleChecker+Invalid, 1849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 419 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 11:36:23,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2040 Valid, 3753 Invalid, 1849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1319 Invalid, 0 Unknown, 419 Unchecked, 0.6s Time] [2022-02-15 11:36:23,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19616 states. [2022-02-15 11:36:24,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19616 to 14023. [2022-02-15 11:36:24,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14023 states, 14022 states have (on average 3.193980887177293) internal successors, (44786), 14022 states have internal predecessors, (44786), 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) [2022-02-15 11:36:24,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14023 states to 14023 states and 44786 transitions. [2022-02-15 11:36:24,195 INFO L78 Accepts]: Start accepts. Automaton has 14023 states and 44786 transitions. Word has length 161 [2022-02-15 11:36:24,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:36:24,196 INFO L470 AbstractCegarLoop]: Abstraction has 14023 states and 44786 transitions. [2022-02-15 11:36:24,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 7.880952380952381) internal successors, (331), 42 states have internal predecessors, (331), 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) [2022-02-15 11:36:24,196 INFO L276 IsEmpty]: Start isEmpty. Operand 14023 states and 44786 transitions. [2022-02-15 11:36:24,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-02-15 11:36:24,274 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:36:24,274 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:36:24,291 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-02-15 11:36:24,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:36:24,476 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:36:24,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:36:24,476 INFO L85 PathProgramCache]: Analyzing trace with hash -731624335, now seen corresponding path program 11 times [2022-02-15 11:36:24,477 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:36:24,477 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173671937] [2022-02-15 11:36:24,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:36:24,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:36:24,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:25,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:25,135 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:36:25,135 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173671937] [2022-02-15 11:36:25,136 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173671937] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:36:25,136 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384984544] [2022-02-15 11:36:25,136 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 11:36:25,136 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:36:25,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:36:25,139 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) [2022-02-15 11:36:25,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-15 11:36:25,229 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 11:36:25,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:36:25,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 41 conjunts are in the unsatisfiable core [2022-02-15 11:36:25,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:36:26,024 INFO L353 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-02-15 11:36:26,024 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 20 [2022-02-15 11:36:26,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:26,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:36:26,392 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:36:26,392 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 36 [2022-02-15 11:36:27,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:27,197 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384984544] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 11:36:27,197 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 11:36:27,197 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 19, 19] total 54 [2022-02-15 11:36:27,198 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077115413] [2022-02-15 11:36:27,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 11:36:27,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-15 11:36:27,198 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:36:27,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-15 11:36:27,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=2495, Unknown=0, NotChecked=0, Total=2862 [2022-02-15 11:36:27,200 INFO L87 Difference]: Start difference. First operand 14023 states and 44786 transitions. Second operand has 54 states, 54 states have (on average 6.333333333333333) internal successors, (342), 54 states have internal predecessors, (342), 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) [2022-02-15 11:36:31,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:36:31,801 INFO L93 Difference]: Finished difference Result 27811 states and 88441 transitions. [2022-02-15 11:36:31,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-02-15 11:36:31,801 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 6.333333333333333) internal successors, (342), 54 states have internal predecessors, (342), 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 161 [2022-02-15 11:36:31,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:36:31,870 INFO L225 Difference]: With dead ends: 27811 [2022-02-15 11:36:31,870 INFO L226 Difference]: Without dead ends: 26236 [2022-02-15 11:36:31,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 300 SyntacticMatches, 31 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 4388 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2204, Invalid=10452, Unknown=0, NotChecked=0, Total=12656 [2022-02-15 11:36:31,872 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 5046 mSDsluCounter, 6460 mSDsCounter, 0 mSdLazyCounter, 2267 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5046 SdHoareTripleChecker+Valid, 5782 SdHoareTripleChecker+Invalid, 3187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 2267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 661 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 11:36:31,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5046 Valid, 5782 Invalid, 3187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 2267 Invalid, 0 Unknown, 661 Unchecked, 1.0s Time] [2022-02-15 11:36:31,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26236 states. [2022-02-15 11:36:32,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26236 to 16132. [2022-02-15 11:36:32,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16132 states, 16131 states have (on average 3.1939123426941913) internal successors, (51521), 16131 states have internal predecessors, (51521), 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) [2022-02-15 11:36:32,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16132 states to 16132 states and 51521 transitions. [2022-02-15 11:36:32,334 INFO L78 Accepts]: Start accepts. Automaton has 16132 states and 51521 transitions. Word has length 161 [2022-02-15 11:36:32,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:36:32,335 INFO L470 AbstractCegarLoop]: Abstraction has 16132 states and 51521 transitions. [2022-02-15 11:36:32,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 6.333333333333333) internal successors, (342), 54 states have internal predecessors, (342), 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) [2022-02-15 11:36:32,335 INFO L276 IsEmpty]: Start isEmpty. Operand 16132 states and 51521 transitions. [2022-02-15 11:36:32,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-02-15 11:36:32,365 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:36:32,365 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:36:32,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-02-15 11:36:32,565 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,SelfDestructingSolverStorable12 [2022-02-15 11:36:32,566 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:36:32,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:36:32,566 INFO L85 PathProgramCache]: Analyzing trace with hash -821601123, now seen corresponding path program 12 times [2022-02-15 11:36:32,567 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:36:32,567 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968144662] [2022-02-15 11:36:32,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:36:32,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:36:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:32,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:32,939 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:36:32,939 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968144662] [2022-02-15 11:36:32,939 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968144662] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:36:32,939 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779343298] [2022-02-15 11:36:32,940 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 11:36:32,940 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:36:32,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:36:32,944 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) [2022-02-15 11:36:32,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-02-15 11:36:33,075 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-02-15 11:36:33,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:36:33,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 38 conjunts are in the unsatisfiable core [2022-02-15 11:36:33,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:36:33,114 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-15 11:36:33,207 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-15 11:36:33,208 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-15 11:36:33,691 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:36:33,896 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:36:33,897 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:36:33,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 11:36:33,917 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 11:36:33,917 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779343298] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:36:33,917 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 11:36:33,917 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [21] total 36 [2022-02-15 11:36:33,917 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610202194] [2022-02-15 11:36:33,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:36:33,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 11:36:33,918 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:36:33,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 11:36:33,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1172, Unknown=0, NotChecked=0, Total=1260 [2022-02-15 11:36:33,919 INFO L87 Difference]: Start difference. First operand 16132 states and 51521 transitions. Second operand has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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) [2022-02-15 11:36:34,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:36:34,700 INFO L93 Difference]: Finished difference Result 18129 states and 57747 transitions. [2022-02-15 11:36:34,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-15 11:36:34,701 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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 161 [2022-02-15 11:36:34,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:36:34,745 INFO L225 Difference]: With dead ends: 18129 [2022-02-15 11:36:34,745 INFO L226 Difference]: Without dead ends: 17926 [2022-02-15 11:36:34,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=302, Invalid=2778, Unknown=0, NotChecked=0, Total=3080 [2022-02-15 11:36:34,746 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 812 mSDsluCounter, 2592 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 2473 SdHoareTripleChecker+Invalid, 1135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 237 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 11:36:34,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [812 Valid, 2473 Invalid, 1135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 854 Invalid, 0 Unknown, 237 Unchecked, 0.3s Time] [2022-02-15 11:36:34,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17926 states. [2022-02-15 11:36:34,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17926 to 16032. [2022-02-15 11:36:35,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16032 states, 16031 states have (on average 3.191691098496663) internal successors, (51166), 16031 states have internal predecessors, (51166), 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) [2022-02-15 11:36:35,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16032 states to 16032 states and 51166 transitions. [2022-02-15 11:36:35,057 INFO L78 Accepts]: Start accepts. Automaton has 16032 states and 51166 transitions. Word has length 161 [2022-02-15 11:36:35,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:36:35,057 INFO L470 AbstractCegarLoop]: Abstraction has 16032 states and 51166 transitions. [2022-02-15 11:36:35,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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) [2022-02-15 11:36:35,058 INFO L276 IsEmpty]: Start isEmpty. Operand 16032 states and 51166 transitions. [2022-02-15 11:36:35,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-02-15 11:36:35,140 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:36:35,140 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:36:35,156 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-02-15 11:36:35,341 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,SelfDestructingSolverStorable13 [2022-02-15 11:36:35,341 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:36:35,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:36:35,342 INFO L85 PathProgramCache]: Analyzing trace with hash 16013035, now seen corresponding path program 13 times [2022-02-15 11:36:35,342 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:36:35,342 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806139084] [2022-02-15 11:36:35,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:36:35,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:36:35,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:36,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:36,012 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:36:36,012 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806139084] [2022-02-15 11:36:36,012 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806139084] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:36:36,012 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810489077] [2022-02-15 11:36:36,012 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 11:36:36,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:36:36,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:36:36,014 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) [2022-02-15 11:36:36,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-02-15 11:36:36,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:36,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 38 conjunts are in the unsatisfiable core [2022-02-15 11:36:36,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:36:36,763 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-15 11:36:36,765 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:36:36,765 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 10 [2022-02-15 11:36:36,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:36,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:36:36,887 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-02-15 11:36:36,887 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2022-02-15 11:36:37,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:37,358 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810489077] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 11:36:37,358 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 11:36:37,358 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 20, 14] total 42 [2022-02-15 11:36:37,358 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314182450] [2022-02-15 11:36:37,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 11:36:37,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-02-15 11:36:37,358 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:36:37,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-02-15 11:36:37,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1527, Unknown=0, NotChecked=0, Total=1722 [2022-02-15 11:36:37,359 INFO L87 Difference]: Start difference. First operand 16032 states and 51166 transitions. Second operand has 42 states, 42 states have (on average 8.023809523809524) internal successors, (337), 42 states have internal predecessors, (337), 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) [2022-02-15 11:36:39,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:36:39,385 INFO L93 Difference]: Finished difference Result 19938 states and 63080 transitions. [2022-02-15 11:36:39,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-15 11:36:39,386 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 8.023809523809524) internal successors, (337), 42 states have internal predecessors, (337), 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 161 [2022-02-15 11:36:39,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:36:39,401 INFO L225 Difference]: With dead ends: 19938 [2022-02-15 11:36:39,401 INFO L226 Difference]: Without dead ends: 6183 [2022-02-15 11:36:39,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 304 SyntacticMatches, 5 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 971 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1067, Invalid=4335, Unknown=0, NotChecked=0, Total=5402 [2022-02-15 11:36:39,403 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 2496 mSDsluCounter, 4716 mSDsCounter, 0 mSdLazyCounter, 1927 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2496 SdHoareTripleChecker+Valid, 4331 SdHoareTripleChecker+Invalid, 2202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 198 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 11:36:39,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2496 Valid, 4331 Invalid, 2202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1927 Invalid, 0 Unknown, 198 Unchecked, 0.7s Time] [2022-02-15 11:36:39,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6183 states. [2022-02-15 11:36:39,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6183 to 6178. [2022-02-15 11:36:39,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6178 states, 6177 states have (on average 3.156386595434677) internal successors, (19497), 6177 states have internal predecessors, (19497), 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) [2022-02-15 11:36:39,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6178 states to 6178 states and 19497 transitions. [2022-02-15 11:36:39,510 INFO L78 Accepts]: Start accepts. Automaton has 6178 states and 19497 transitions. Word has length 161 [2022-02-15 11:36:39,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:36:39,510 INFO L470 AbstractCegarLoop]: Abstraction has 6178 states and 19497 transitions. [2022-02-15 11:36:39,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 8.023809523809524) internal successors, (337), 42 states have internal predecessors, (337), 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) [2022-02-15 11:36:39,510 INFO L276 IsEmpty]: Start isEmpty. Operand 6178 states and 19497 transitions. [2022-02-15 11:36:39,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:36:39,521 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:36:39,521 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:36:39,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-02-15 11:36:39,721 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,SelfDestructingSolverStorable14 [2022-02-15 11:36:39,722 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:36:39,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:36:39,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1695529665, now seen corresponding path program 14 times [2022-02-15 11:36:39,722 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:36:39,722 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913561283] [2022-02-15 11:36:39,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:36:39,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:36:39,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:40,696 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:40,697 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:36:40,697 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913561283] [2022-02-15 11:36:40,697 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913561283] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:36:40,697 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694761965] [2022-02-15 11:36:40,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 11:36:40,697 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:36:40,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:36:40,700 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) [2022-02-15 11:36:40,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-02-15 11:36:40,828 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-02-15 11:36:40,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:36:40,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 38 conjunts are in the unsatisfiable core [2022-02-15 11:36:40,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:36:40,870 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-15 11:36:40,971 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-15 11:36:40,971 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-15 11:36:41,447 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:36:41,601 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:36:41,601 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:36:41,637 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:36:41,638 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 11:36:41,638 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694761965] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:36:41,638 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 11:36:41,638 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [30] total 45 [2022-02-15 11:36:41,638 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966476410] [2022-02-15 11:36:41,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:36:41,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 11:36:41,639 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:36:41,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 11:36:41,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1848, Unknown=0, NotChecked=0, Total=1980 [2022-02-15 11:36:41,640 INFO L87 Difference]: Start difference. First operand 6178 states and 19497 transitions. Second operand has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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) [2022-02-15 11:36:42,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:36:42,449 INFO L93 Difference]: Finished difference Result 7796 states and 24473 transitions. [2022-02-15 11:36:42,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-15 11:36:42,450 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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 168 [2022-02-15 11:36:42,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:36:42,465 INFO L225 Difference]: With dead ends: 7796 [2022-02-15 11:36:42,465 INFO L226 Difference]: Without dead ends: 7373 [2022-02-15 11:36:42,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 931 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=341, Invalid=3949, Unknown=0, NotChecked=0, Total=4290 [2022-02-15 11:36:42,466 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 718 mSDsluCounter, 3109 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 2988 SdHoareTripleChecker+Invalid, 1336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 374 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 11:36:42,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [718 Valid, 2988 Invalid, 1336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 922 Invalid, 0 Unknown, 374 Unchecked, 0.3s Time] [2022-02-15 11:36:42,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7373 states. [2022-02-15 11:36:42,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7373 to 6130. [2022-02-15 11:36:42,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6130 states, 6129 states have (on average 3.1592429433839126) internal successors, (19363), 6129 states have internal predecessors, (19363), 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) [2022-02-15 11:36:42,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6130 states to 6130 states and 19363 transitions. [2022-02-15 11:36:42,565 INFO L78 Accepts]: Start accepts. Automaton has 6130 states and 19363 transitions. Word has length 168 [2022-02-15 11:36:42,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:36:42,566 INFO L470 AbstractCegarLoop]: Abstraction has 6130 states and 19363 transitions. [2022-02-15 11:36:42,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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) [2022-02-15 11:36:42,566 INFO L276 IsEmpty]: Start isEmpty. Operand 6130 states and 19363 transitions. [2022-02-15 11:36:42,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:36:42,575 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:36:42,575 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:36:42,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-02-15 11:36:42,775 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,SelfDestructingSolverStorable15 [2022-02-15 11:36:42,776 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:36:42,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:36:42,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1459439263, now seen corresponding path program 15 times [2022-02-15 11:36:42,776 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:36:42,776 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987089981] [2022-02-15 11:36:42,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:36:42,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:36:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:43,723 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:43,723 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:36:43,724 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987089981] [2022-02-15 11:36:43,724 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987089981] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:36:43,724 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058763910] [2022-02-15 11:36:43,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 11:36:43,724 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:36:43,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:36:43,728 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) [2022-02-15 11:36:43,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-02-15 11:36:43,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-02-15 11:36:43,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:36:43,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 38 conjunts are in the unsatisfiable core [2022-02-15 11:36:43,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:36:43,874 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-15 11:36:43,956 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-15 11:36:43,956 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-15 11:36:44,427 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:36:44,573 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:36:44,573 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:36:44,600 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:36:44,600 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 11:36:44,600 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058763910] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:36:44,600 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 11:36:44,600 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [29] total 44 [2022-02-15 11:36:44,600 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620865735] [2022-02-15 11:36:44,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:36:44,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 11:36:44,601 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:36:44,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 11:36:44,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1765, Unknown=0, NotChecked=0, Total=1892 [2022-02-15 11:36:44,602 INFO L87 Difference]: Start difference. First operand 6130 states and 19363 transitions. Second operand has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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) [2022-02-15 11:36:45,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:36:45,382 INFO L93 Difference]: Finished difference Result 7408 states and 23326 transitions. [2022-02-15 11:36:45,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-15 11:36:45,382 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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 168 [2022-02-15 11:36:45,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:36:45,398 INFO L225 Difference]: With dead ends: 7408 [2022-02-15 11:36:45,398 INFO L226 Difference]: Without dead ends: 7375 [2022-02-15 11:36:45,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 834 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=340, Invalid=3692, Unknown=0, NotChecked=0, Total=4032 [2022-02-15 11:36:45,399 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 782 mSDsluCounter, 2639 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 2501 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 233 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 11:36:45,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [782 Valid, 2501 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 870 Invalid, 0 Unknown, 233 Unchecked, 0.3s Time] [2022-02-15 11:36:45,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7375 states. [2022-02-15 11:36:45,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7375 to 6132. [2022-02-15 11:36:45,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6132 states, 6131 states have (on average 3.1587016799869514) internal successors, (19366), 6131 states have internal predecessors, (19366), 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) [2022-02-15 11:36:45,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6132 states to 6132 states and 19366 transitions. [2022-02-15 11:36:45,513 INFO L78 Accepts]: Start accepts. Automaton has 6132 states and 19366 transitions. Word has length 168 [2022-02-15 11:36:45,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:36:45,513 INFO L470 AbstractCegarLoop]: Abstraction has 6132 states and 19366 transitions. [2022-02-15 11:36:45,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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) [2022-02-15 11:36:45,514 INFO L276 IsEmpty]: Start isEmpty. Operand 6132 states and 19366 transitions. [2022-02-15 11:36:45,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:36:45,523 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:36:45,523 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:36:45,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-02-15 11:36:45,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:36:45,724 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:36:45,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:36:45,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1067571783, now seen corresponding path program 16 times [2022-02-15 11:36:45,724 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:36:45,724 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786109672] [2022-02-15 11:36:45,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:36:45,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:36:45,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:46,562 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:46,562 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:36:46,562 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786109672] [2022-02-15 11:36:46,563 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786109672] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:36:46,563 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479173557] [2022-02-15 11:36:46,563 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 11:36:46,563 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:36:46,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:36:46,564 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) [2022-02-15 11:36:46,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-02-15 11:36:46,662 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 11:36:46,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:36:46,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 72 conjunts are in the unsatisfiable core [2022-02-15 11:36:46,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:36:46,701 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-15 11:36:46,865 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-15 11:36:46,865 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-15 11:36:48,403 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:36:49,365 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-15 11:36:49,380 INFO L353 Elim1Store]: treesize reduction 35, result has 32.7 percent of original size [2022-02-15 11:36:49,380 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 39 [2022-02-15 11:36:49,409 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:49,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:36:49,891 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:36:49,892 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 154 treesize of output 170 [2022-02-15 11:36:49,911 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:36:49,911 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 70 [2022-02-15 11:36:56,689 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:56,689 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479173557] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 11:36:56,689 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 11:36:56,689 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 33, 33] total 76 [2022-02-15 11:36:56,689 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603565728] [2022-02-15 11:36:56,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 11:36:56,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-02-15 11:36:56,690 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:36:56,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-02-15 11:36:56,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=5285, Unknown=16, NotChecked=0, Total=5700 [2022-02-15 11:36:56,692 INFO L87 Difference]: Start difference. First operand 6132 states and 19366 transitions. Second operand has 76 states, 76 states have (on average 5.447368421052632) internal successors, (414), 76 states have internal predecessors, (414), 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) [2022-02-15 11:37:03,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:37:03,349 INFO L93 Difference]: Finished difference Result 15828 states and 50712 transitions. [2022-02-15 11:37:03,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-02-15 11:37:03,350 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 5.447368421052632) internal successors, (414), 76 states have internal predecessors, (414), 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 168 [2022-02-15 11:37:03,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:37:03,389 INFO L225 Difference]: With dead ends: 15828 [2022-02-15 11:37:03,389 INFO L226 Difference]: Without dead ends: 15680 [2022-02-15 11:37:03,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 294 SyntacticMatches, 11 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 5250 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=2819, Invalid=17454, Unknown=33, NotChecked=0, Total=20306 [2022-02-15 11:37:03,391 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 4266 mSDsluCounter, 11179 mSDsCounter, 0 mSdLazyCounter, 3764 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4266 SdHoareTripleChecker+Valid, 9561 SdHoareTripleChecker+Invalid, 7144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 3764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3152 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-15 11:37:03,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4266 Valid, 9561 Invalid, 7144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 3764 Invalid, 0 Unknown, 3152 Unchecked, 1.6s Time] [2022-02-15 11:37:03,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15680 states. [2022-02-15 11:37:03,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15680 to 7420. [2022-02-15 11:37:03,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7420 states, 7419 states have (on average 3.118614368513277) internal successors, (23137), 7419 states have internal predecessors, (23137), 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) [2022-02-15 11:37:03,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7420 states to 7420 states and 23137 transitions. [2022-02-15 11:37:03,578 INFO L78 Accepts]: Start accepts. Automaton has 7420 states and 23137 transitions. Word has length 168 [2022-02-15 11:37:03,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:37:03,578 INFO L470 AbstractCegarLoop]: Abstraction has 7420 states and 23137 transitions. [2022-02-15 11:37:03,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 5.447368421052632) internal successors, (414), 76 states have internal predecessors, (414), 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) [2022-02-15 11:37:03,579 INFO L276 IsEmpty]: Start isEmpty. Operand 7420 states and 23137 transitions. [2022-02-15 11:37:03,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:37:03,591 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:37:03,591 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:37:03,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-02-15 11:37:03,791 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,SelfDestructingSolverStorable17 [2022-02-15 11:37:03,792 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:37:03,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:37:03,792 INFO L85 PathProgramCache]: Analyzing trace with hash 2043787335, now seen corresponding path program 17 times [2022-02-15 11:37:03,792 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:37:03,792 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314027410] [2022-02-15 11:37:03,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:37:03,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:37:03,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:37:04,617 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:37:04,617 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:37:04,617 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314027410] [2022-02-15 11:37:04,617 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314027410] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:37:04,617 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510052212] [2022-02-15 11:37:04,617 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 11:37:04,618 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:37:04,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:37:04,619 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) [2022-02-15 11:37:04,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-02-15 11:37:04,747 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-15 11:37:04,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:37:04,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-15 11:37:04,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:37:04,788 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-15 11:37:04,889 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-15 11:37:04,890 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-15 11:37:05,433 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:37:05,595 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:37:05,596 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:37:05,615 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-15 11:37:05,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:37:05,757 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_600 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_600) c_~f~0.base))) (= (select .cse0 (+ c_~f~0.offset (* c_~i2~0 4))) (select .cse0 (+ (* (select .cse0 (+ c_~f~0.offset (* c_~j~0 4))) 4) c_~f~0.offset))))) is different from false [2022-02-15 11:37:05,764 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_600 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_600) c_~f~0.base))) (= (select .cse0 (+ (* (select .cse0 (+ c_~f~0.offset (* c_~j~0 4))) 4) c_~f~0.offset)) (select .cse0 (+ c_~f~0.offset (* c_~i~0 4)))))) is different from false [2022-02-15 11:37:05,806 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:37:05,807 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 122 [2022-02-15 11:37:05,823 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:37:05,824 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 57 [2022-02-15 11:37:06,528 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:37:06,528 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510052212] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-15 11:37:06,528 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-15 11:37:06,529 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [30, 22] total 56 [2022-02-15 11:37:06,529 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766316563] [2022-02-15 11:37:06,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:37:06,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 11:37:06,530 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:37:06,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 11:37:06,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=2686, Unknown=2, NotChecked=210, Total=3080 [2022-02-15 11:37:06,531 INFO L87 Difference]: Start difference. First operand 7420 states and 23137 transitions. Second operand has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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) [2022-02-15 11:37:07,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:37:07,667 INFO L93 Difference]: Finished difference Result 10010 states and 31260 transitions. [2022-02-15 11:37:07,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-15 11:37:07,672 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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 168 [2022-02-15 11:37:07,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:37:07,696 INFO L225 Difference]: With dead ends: 10010 [2022-02-15 11:37:07,696 INFO L226 Difference]: Without dead ends: 8797 [2022-02-15 11:37:07,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 311 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 1301 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=456, Invalid=5250, Unknown=2, NotChecked=298, Total=6006 [2022-02-15 11:37:07,698 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 987 mSDsluCounter, 2566 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 2504 SdHoareTripleChecker+Invalid, 1741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 499 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 11:37:07,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [987 Valid, 2504 Invalid, 1741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1176 Invalid, 0 Unknown, 499 Unchecked, 0.5s Time] [2022-02-15 11:37:07,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8797 states. [2022-02-15 11:37:07,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8797 to 6600. [2022-02-15 11:37:07,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6600 states, 6599 states have (on average 3.2016972268525534) internal successors, (21128), 6599 states have internal predecessors, (21128), 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) [2022-02-15 11:37:07,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6600 states to 6600 states and 21128 transitions. [2022-02-15 11:37:07,892 INFO L78 Accepts]: Start accepts. Automaton has 6600 states and 21128 transitions. Word has length 168 [2022-02-15 11:37:07,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:37:07,892 INFO L470 AbstractCegarLoop]: Abstraction has 6600 states and 21128 transitions. [2022-02-15 11:37:07,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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) [2022-02-15 11:37:07,892 INFO L276 IsEmpty]: Start isEmpty. Operand 6600 states and 21128 transitions. [2022-02-15 11:37:07,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:37:07,903 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:37:07,903 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:37:07,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-02-15 11:37:08,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:37:08,104 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:37:08,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:37:08,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1866858615, now seen corresponding path program 18 times [2022-02-15 11:37:08,105 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:37:08,105 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141557317] [2022-02-15 11:37:08,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:37:08,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:37:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:37:08,794 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:37:08,794 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:37:08,794 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141557317] [2022-02-15 11:37:08,794 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141557317] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:37:08,794 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138035335] [2022-02-15 11:37:08,794 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 11:37:08,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:37:08,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:37:08,796 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) [2022-02-15 11:37:08,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-02-15 11:37:08,896 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-02-15 11:37:08,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:37:08,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 38 conjunts are in the unsatisfiable core [2022-02-15 11:37:08,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:37:08,950 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-15 11:37:09,028 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-15 11:37:09,028 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-15 11:37:09,448 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:37:09,641 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:37:09,641 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:37:09,668 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:37:09,668 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 11:37:09,668 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138035335] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:37:09,668 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 11:37:09,668 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [29] total 44 [2022-02-15 11:37:09,669 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845321701] [2022-02-15 11:37:09,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:37:09,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 11:37:09,669 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:37:09,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 11:37:09,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1762, Unknown=0, NotChecked=0, Total=1892 [2022-02-15 11:37:09,670 INFO L87 Difference]: Start difference. First operand 6600 states and 21128 transitions. Second operand has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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) [2022-02-15 11:37:10,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:37:10,414 INFO L93 Difference]: Finished difference Result 10561 states and 33271 transitions. [2022-02-15 11:37:10,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-15 11:37:10,414 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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 168 [2022-02-15 11:37:10,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:37:10,436 INFO L225 Difference]: With dead ends: 10561 [2022-02-15 11:37:10,436 INFO L226 Difference]: Without dead ends: 10489 [2022-02-15 11:37:10,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 829 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=339, Invalid=3693, Unknown=0, NotChecked=0, Total=4032 [2022-02-15 11:37:10,437 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 844 mSDsluCounter, 2739 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 2623 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 350 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 11:37:10,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [844 Valid, 2623 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 681 Invalid, 0 Unknown, 350 Unchecked, 0.3s Time] [2022-02-15 11:37:10,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10489 states. [2022-02-15 11:37:10,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10489 to 6668. [2022-02-15 11:37:10,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6668 states, 6667 states have (on average 3.1990400479976002) internal successors, (21328), 6667 states have internal predecessors, (21328), 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) [2022-02-15 11:37:10,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6668 states to 6668 states and 21328 transitions. [2022-02-15 11:37:10,576 INFO L78 Accepts]: Start accepts. Automaton has 6668 states and 21328 transitions. Word has length 168 [2022-02-15 11:37:10,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:37:10,576 INFO L470 AbstractCegarLoop]: Abstraction has 6668 states and 21328 transitions. [2022-02-15 11:37:10,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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) [2022-02-15 11:37:10,576 INFO L276 IsEmpty]: Start isEmpty. Operand 6668 states and 21328 transitions. [2022-02-15 11:37:10,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:37:10,588 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:37:10,588 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:37:10,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-02-15 11:37:10,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:37:10,789 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:37:10,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:37:10,789 INFO L85 PathProgramCache]: Analyzing trace with hash -515117047, now seen corresponding path program 19 times [2022-02-15 11:37:10,789 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:37:10,789 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586400228] [2022-02-15 11:37:10,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:37:10,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:37:10,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:37:11,643 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:37:11,643 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:37:11,643 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586400228] [2022-02-15 11:37:11,643 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586400228] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:37:11,643 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717812282] [2022-02-15 11:37:11,644 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 11:37:11,644 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:37:11,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:37:11,646 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) [2022-02-15 11:37:11,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-02-15 11:37:11,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:37:11,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 42 conjunts are in the unsatisfiable core [2022-02-15 11:37:11,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:37:11,804 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-15 11:37:11,890 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-15 11:37:11,891 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-15 11:37:12,339 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:37:12,525 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:37:12,525 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:37:12,557 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:37:12,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 11:37:12,557 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717812282] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:37:12,557 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 11:37:12,557 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [30] total 45 [2022-02-15 11:37:12,557 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830861949] [2022-02-15 11:37:12,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:37:12,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 11:37:12,558 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:37:12,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 11:37:12,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1848, Unknown=0, NotChecked=0, Total=1980 [2022-02-15 11:37:12,559 INFO L87 Difference]: Start difference. First operand 6668 states and 21328 transitions. Second operand has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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) [2022-02-15 11:37:13,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:37:13,370 INFO L93 Difference]: Finished difference Result 10313 states and 32379 transitions. [2022-02-15 11:37:13,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-15 11:37:13,371 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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 168 [2022-02-15 11:37:13,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:37:13,395 INFO L225 Difference]: With dead ends: 10313 [2022-02-15 11:37:13,395 INFO L226 Difference]: Without dead ends: 9935 [2022-02-15 11:37:13,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 821 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=341, Invalid=3819, Unknown=0, NotChecked=0, Total=4160 [2022-02-15 11:37:13,397 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 821 mSDsluCounter, 2999 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 2793 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 492 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 11:37:13,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [821 Valid, 2793 Invalid, 1331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 798 Invalid, 0 Unknown, 492 Unchecked, 0.3s Time] [2022-02-15 11:37:13,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9935 states. [2022-02-15 11:37:13,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9935 to 7052. [2022-02-15 11:37:13,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7052 states, 7051 states have (on average 3.198269748971777) internal successors, (22551), 7051 states have internal predecessors, (22551), 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) [2022-02-15 11:37:13,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7052 states to 7052 states and 22551 transitions. [2022-02-15 11:37:13,606 INFO L78 Accepts]: Start accepts. Automaton has 7052 states and 22551 transitions. Word has length 168 [2022-02-15 11:37:13,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:37:13,606 INFO L470 AbstractCegarLoop]: Abstraction has 7052 states and 22551 transitions. [2022-02-15 11:37:13,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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) [2022-02-15 11:37:13,606 INFO L276 IsEmpty]: Start isEmpty. Operand 7052 states and 22551 transitions. [2022-02-15 11:37:13,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:37:13,619 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:37:13,619 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:37:13,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-02-15 11:37:13,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:37:13,821 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:37:13,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:37:13,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1857872977, now seen corresponding path program 20 times [2022-02-15 11:37:13,822 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:37:13,822 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575652631] [2022-02-15 11:37:13,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:37:13,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:37:13,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:37:16,283 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:37:16,283 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:37:16,283 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575652631] [2022-02-15 11:37:16,284 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575652631] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:37:16,284 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335915049] [2022-02-15 11:37:16,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 11:37:16,284 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:37:16,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:37:16,285 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:37:16,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-02-15 11:37:16,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-02-15 11:37:16,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:37:16,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 38 conjunts are in the unsatisfiable core [2022-02-15 11:37:16,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:37:16,426 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-15 11:37:16,508 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-15 11:37:16,508 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-15 11:37:16,984 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:37:17,211 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:37:17,211 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:37:17,245 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:37:17,245 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 11:37:17,246 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335915049] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:37:17,246 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 11:37:17,246 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [37] total 52 [2022-02-15 11:37:17,246 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793425496] [2022-02-15 11:37:17,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:37:17,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 11:37:17,246 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:37:17,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 11:37:17,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=2471, Unknown=0, NotChecked=0, Total=2652 [2022-02-15 11:37:17,249 INFO L87 Difference]: Start difference. First operand 7052 states and 22551 transitions. Second operand has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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) [2022-02-15 11:37:18,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:37:18,075 INFO L93 Difference]: Finished difference Result 10362 states and 32501 transitions. [2022-02-15 11:37:18,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-15 11:37:18,076 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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 168 [2022-02-15 11:37:18,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:37:18,098 INFO L225 Difference]: With dead ends: 10362 [2022-02-15 11:37:18,098 INFO L226 Difference]: Without dead ends: 10272 [2022-02-15 11:37:18,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1285 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=392, Invalid=4720, Unknown=0, NotChecked=0, Total=5112 [2022-02-15 11:37:18,099 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 867 mSDsluCounter, 2844 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 2685 SdHoareTripleChecker+Invalid, 1231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 522 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 11:37:18,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [867 Valid, 2685 Invalid, 1231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 665 Invalid, 0 Unknown, 522 Unchecked, 0.3s Time] [2022-02-15 11:37:18,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10272 states. [2022-02-15 11:37:18,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10272 to 7418. [2022-02-15 11:37:18,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7418 states, 7417 states have (on average 3.1944182283942295) internal successors, (23693), 7417 states have internal predecessors, (23693), 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) [2022-02-15 11:37:18,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7418 states to 7418 states and 23693 transitions. [2022-02-15 11:37:18,273 INFO L78 Accepts]: Start accepts. Automaton has 7418 states and 23693 transitions. Word has length 168 [2022-02-15 11:37:18,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:37:18,273 INFO L470 AbstractCegarLoop]: Abstraction has 7418 states and 23693 transitions. [2022-02-15 11:37:18,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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) [2022-02-15 11:37:18,273 INFO L276 IsEmpty]: Start isEmpty. Operand 7418 states and 23693 transitions. [2022-02-15 11:37:18,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:37:18,285 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:37:18,285 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:37:18,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-02-15 11:37:18,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:37:18,486 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:37:18,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:37:18,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1707748613, now seen corresponding path program 21 times [2022-02-15 11:37:18,487 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:37:18,487 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462772375] [2022-02-15 11:37:18,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:37:18,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:37:18,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:37:19,416 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:37:19,417 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:37:19,417 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462772375] [2022-02-15 11:37:19,417 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462772375] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:37:19,417 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926810106] [2022-02-15 11:37:19,417 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 11:37:19,417 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:37:19,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:37:19,418 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:37:19,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-02-15 11:37:19,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-02-15 11:37:19,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:37:19,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 36 conjunts are in the unsatisfiable core [2022-02-15 11:37:19,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:37:19,557 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-15 11:37:19,642 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-15 11:37:19,643 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-15 11:37:20,075 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:37:20,264 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:37:20,264 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:37:20,290 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:37:20,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 11:37:20,291 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926810106] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:37:20,291 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 11:37:20,291 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [32] total 47 [2022-02-15 11:37:20,291 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042255897] [2022-02-15 11:37:20,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:37:20,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 11:37:20,291 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:37:20,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 11:37:20,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=2003, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 11:37:20,292 INFO L87 Difference]: Start difference. First operand 7418 states and 23693 transitions. Second operand has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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) [2022-02-15 11:37:21,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:37:21,038 INFO L93 Difference]: Finished difference Result 10714 states and 33615 transitions. [2022-02-15 11:37:21,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-15 11:37:21,038 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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 168 [2022-02-15 11:37:21,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:37:21,060 INFO L225 Difference]: With dead ends: 10714 [2022-02-15 11:37:21,060 INFO L226 Difference]: Without dead ends: 10222 [2022-02-15 11:37:21,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1100 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=370, Invalid=4052, Unknown=0, NotChecked=0, Total=4422 [2022-02-15 11:37:21,062 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 837 mSDsluCounter, 3152 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 2959 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 580 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 11:37:21,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [837 Valid, 2959 Invalid, 1356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 736 Invalid, 0 Unknown, 580 Unchecked, 0.3s Time] [2022-02-15 11:37:21,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10222 states. [2022-02-15 11:37:21,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10222 to 7378. [2022-02-15 11:37:21,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7378 states, 7377 states have (on average 3.2010302290904162) internal successors, (23614), 7377 states have internal predecessors, (23614), 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) [2022-02-15 11:37:21,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7378 states to 7378 states and 23614 transitions. [2022-02-15 11:37:21,221 INFO L78 Accepts]: Start accepts. Automaton has 7378 states and 23614 transitions. Word has length 168 [2022-02-15 11:37:21,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:37:21,222 INFO L470 AbstractCegarLoop]: Abstraction has 7378 states and 23614 transitions. [2022-02-15 11:37:21,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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) [2022-02-15 11:37:21,222 INFO L276 IsEmpty]: Start isEmpty. Operand 7378 states and 23614 transitions. [2022-02-15 11:37:21,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:37:21,234 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:37:21,234 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:37:21,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-02-15 11:37:21,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-02-15 11:37:21,435 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:37:21,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:37:21,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1575996347, now seen corresponding path program 22 times [2022-02-15 11:37:21,436 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:37:21,436 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820001806] [2022-02-15 11:37:21,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:37:21,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:37:21,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:37:22,278 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:37:22,278 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:37:22,278 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820001806] [2022-02-15 11:37:22,279 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820001806] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:37:22,279 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933076995] [2022-02-15 11:37:22,279 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 11:37:22,279 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:37:22,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:37:22,284 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:37:22,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-02-15 11:37:22,417 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 11:37:22,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:37:22,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 68 conjunts are in the unsatisfiable core [2022-02-15 11:37:22,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:37:22,458 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-15 11:37:22,617 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-15 11:37:22,617 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-15 11:37:23,873 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:37:24,323 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:37:24,323 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 32 [2022-02-15 11:37:24,359 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:37:24,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:37:24,812 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:37:24,812 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 154 treesize of output 170 [2022-02-15 11:37:24,830 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:37:24,830 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 70 [2022-02-15 11:38:10,933 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:38:10,934 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933076995] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 11:38:10,934 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 11:38:10,934 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 33, 33] total 85 [2022-02-15 11:38:10,934 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112380269] [2022-02-15 11:38:10,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 11:38:10,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2022-02-15 11:38:10,935 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:38:10,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2022-02-15 11:38:10,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=459, Invalid=6669, Unknown=12, NotChecked=0, Total=7140 [2022-02-15 11:38:10,936 INFO L87 Difference]: Start difference. First operand 7378 states and 23614 transitions. Second operand has 85 states, 85 states have (on average 4.9411764705882355) internal successors, (420), 85 states have internal predecessors, (420), 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) [2022-02-15 11:38:26,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:38:26,374 INFO L93 Difference]: Finished difference Result 26802 states and 84126 transitions. [2022-02-15 11:38:26,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-02-15 11:38:26,374 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 4.9411764705882355) internal successors, (420), 85 states have internal predecessors, (420), 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 168 [2022-02-15 11:38:26,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:38:26,434 INFO L225 Difference]: With dead ends: 26802 [2022-02-15 11:38:26,434 INFO L226 Difference]: Without dead ends: 24561 [2022-02-15 11:38:26,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 289 SyntacticMatches, 11 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12179 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=7308, Invalid=39983, Unknown=15, NotChecked=0, Total=47306 [2022-02-15 11:38:26,437 INFO L933 BasicCegarLoop]: 339 mSDtfsCounter, 7412 mSDsluCounter, 14869 mSDsCounter, 0 mSdLazyCounter, 7308 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7412 SdHoareTripleChecker+Valid, 12941 SdHoareTripleChecker+Invalid, 9824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 7308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2174 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-02-15 11:38:26,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7412 Valid, 12941 Invalid, 9824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [342 Valid, 7308 Invalid, 0 Unknown, 2174 Unchecked, 3.1s Time] [2022-02-15 11:38:26,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24561 states. [2022-02-15 11:38:26,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24561 to 10862. [2022-02-15 11:38:26,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10862 states, 10861 states have (on average 3.2118589448485406) internal successors, (34884), 10861 states have internal predecessors, (34884), 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) [2022-02-15 11:38:26,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10862 states to 10862 states and 34884 transitions. [2022-02-15 11:38:26,754 INFO L78 Accepts]: Start accepts. Automaton has 10862 states and 34884 transitions. Word has length 168 [2022-02-15 11:38:26,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:38:26,755 INFO L470 AbstractCegarLoop]: Abstraction has 10862 states and 34884 transitions. [2022-02-15 11:38:26,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 4.9411764705882355) internal successors, (420), 85 states have internal predecessors, (420), 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) [2022-02-15 11:38:26,755 INFO L276 IsEmpty]: Start isEmpty. Operand 10862 states and 34884 transitions. [2022-02-15 11:38:26,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:38:26,773 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:38:26,773 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:38:26,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-02-15 11:38:26,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-02-15 11:38:26,974 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:38:26,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:38:26,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1367229381, now seen corresponding path program 23 times [2022-02-15 11:38:26,975 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:38:26,975 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192715924] [2022-02-15 11:38:26,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:38:26,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:38:27,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:38:27,684 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:38:27,684 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:38:27,684 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192715924] [2022-02-15 11:38:27,684 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192715924] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:38:27,685 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754340885] [2022-02-15 11:38:27,685 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 11:38:27,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:38:27,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:38:27,687 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:38:27,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-02-15 11:38:27,801 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-15 11:38:27,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:38:27,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-15 11:38:27,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:38:27,837 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-15 11:38:27,941 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-15 11:38:27,941 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-15 11:38:28,439 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:38:28,611 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:38:28,611 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:38:28,642 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-15 11:38:28,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:38:28,808 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_828 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_828) c_~f~0.base))) (= (select .cse0 (+ (* (select .cse0 (+ c_~f~0.offset (* c_~j~0 4))) 4) c_~f~0.offset)) (select .cse0 (+ c_~f~0.offset (* c_~i~0 4)))))) is different from false [2022-02-15 11:38:28,847 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:38:28,847 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 122 [2022-02-15 11:38:28,862 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:38:28,863 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 57 [2022-02-15 11:38:29,542 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:38:29,542 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754340885] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-15 11:38:29,543 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-15 11:38:29,543 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [29, 22] total 55 [2022-02-15 11:38:29,543 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624941158] [2022-02-15 11:38:29,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:38:29,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 11:38:29,543 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:38:29,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 11:38:29,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=2682, Unknown=1, NotChecked=104, Total=2970 [2022-02-15 11:38:29,544 INFO L87 Difference]: Start difference. First operand 10862 states and 34884 transitions. Second operand has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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) [2022-02-15 11:38:31,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:38:31,069 INFO L93 Difference]: Finished difference Result 13879 states and 44331 transitions. [2022-02-15 11:38:31,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-15 11:38:31,070 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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 168 [2022-02-15 11:38:31,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:38:31,102 INFO L225 Difference]: With dead ends: 13879 [2022-02-15 11:38:31,103 INFO L226 Difference]: Without dead ends: 12989 [2022-02-15 11:38:31,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 313 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1256 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=555, Invalid=5928, Unknown=1, NotChecked=158, Total=6642 [2022-02-15 11:38:31,104 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 1185 mSDsluCounter, 2797 mSDsCounter, 0 mSdLazyCounter, 1457 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1185 SdHoareTripleChecker+Valid, 2695 SdHoareTripleChecker+Invalid, 1918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 390 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 11:38:31,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1185 Valid, 2695 Invalid, 1918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1457 Invalid, 0 Unknown, 390 Unchecked, 0.6s Time] [2022-02-15 11:38:31,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12989 states. [2022-02-15 11:38:31,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12989 to 8669. [2022-02-15 11:38:31,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8669 states, 8668 states have (on average 3.2007383479464697) internal successors, (27744), 8668 states have internal predecessors, (27744), 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) [2022-02-15 11:38:31,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8669 states to 8669 states and 27744 transitions. [2022-02-15 11:38:31,307 INFO L78 Accepts]: Start accepts. Automaton has 8669 states and 27744 transitions. Word has length 168 [2022-02-15 11:38:31,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:38:31,307 INFO L470 AbstractCegarLoop]: Abstraction has 8669 states and 27744 transitions. [2022-02-15 11:38:31,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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) [2022-02-15 11:38:31,308 INFO L276 IsEmpty]: Start isEmpty. Operand 8669 states and 27744 transitions. [2022-02-15 11:38:31,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:38:31,323 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:38:31,323 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:38:31,341 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-02-15 11:38:31,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:38:31,524 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:38:31,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:38:31,525 INFO L85 PathProgramCache]: Analyzing trace with hash 420653917, now seen corresponding path program 24 times [2022-02-15 11:38:31,525 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:38:31,525 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996330480] [2022-02-15 11:38:31,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:38:31,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:38:31,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:38:33,807 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:38:33,808 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:38:33,808 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996330480] [2022-02-15 11:38:33,808 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996330480] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:38:33,808 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908663307] [2022-02-15 11:38:33,808 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 11:38:33,808 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:38:33,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:38:33,810 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:38:33,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-02-15 11:38:33,918 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-02-15 11:38:33,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:38:33,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 38 conjunts are in the unsatisfiable core [2022-02-15 11:38:33,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:38:33,952 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-15 11:38:34,039 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-15 11:38:34,039 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-15 11:38:34,555 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:38:34,785 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:38:34,786 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:38:34,825 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:38:34,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 11:38:34,825 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908663307] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:38:34,825 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 11:38:34,825 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [38] total 53 [2022-02-15 11:38:34,826 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053986842] [2022-02-15 11:38:34,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:38:34,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 11:38:34,826 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:38:34,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 11:38:34,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=2572, Unknown=0, NotChecked=0, Total=2756 [2022-02-15 11:38:34,827 INFO L87 Difference]: Start difference. First operand 8669 states and 27744 transitions. Second operand has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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) [2022-02-15 11:38:35,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:38:35,763 INFO L93 Difference]: Finished difference Result 11695 states and 36712 transitions. [2022-02-15 11:38:35,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-15 11:38:35,764 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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 168 [2022-02-15 11:38:35,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:38:35,797 INFO L225 Difference]: With dead ends: 11695 [2022-02-15 11:38:35,797 INFO L226 Difference]: Without dead ends: 11659 [2022-02-15 11:38:35,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1151 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=375, Invalid=4881, Unknown=0, NotChecked=0, Total=5256 [2022-02-15 11:38:35,798 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 785 mSDsluCounter, 3064 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 2966 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 293 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 11:38:35,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [785 Valid, 2966 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 737 Invalid, 0 Unknown, 293 Unchecked, 0.3s Time] [2022-02-15 11:38:35,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11659 states. [2022-02-15 11:38:35,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11659 to 8679. [2022-02-15 11:38:35,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8679 states, 8678 states have (on average 3.1994699239456095) internal successors, (27765), 8678 states have internal predecessors, (27765), 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) [2022-02-15 11:38:35,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8679 states to 8679 states and 27765 transitions. [2022-02-15 11:38:35,988 INFO L78 Accepts]: Start accepts. Automaton has 8679 states and 27765 transitions. Word has length 168 [2022-02-15 11:38:35,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:38:35,988 INFO L470 AbstractCegarLoop]: Abstraction has 8679 states and 27765 transitions. [2022-02-15 11:38:35,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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) [2022-02-15 11:38:35,988 INFO L276 IsEmpty]: Start isEmpty. Operand 8679 states and 27765 transitions. [2022-02-15 11:38:36,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:38:36,003 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:38:36,003 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:38:36,020 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-02-15 11:38:36,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:38:36,204 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:38:36,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:38:36,205 INFO L85 PathProgramCache]: Analyzing trace with hash 991175433, now seen corresponding path program 25 times [2022-02-15 11:38:36,205 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:38:36,205 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176916855] [2022-02-15 11:38:36,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:38:36,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:38:36,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:38:36,881 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:38:36,882 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:38:36,882 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176916855] [2022-02-15 11:38:36,882 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176916855] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:38:36,882 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123957338] [2022-02-15 11:38:36,882 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 11:38:36,882 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:38:36,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:38:36,883 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:38:36,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-02-15 11:38:37,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:38:37,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 68 conjunts are in the unsatisfiable core [2022-02-15 11:38:37,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:38:37,034 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-15 11:38:37,190 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-15 11:38:37,191 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-15 11:38:38,389 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:38:38,837 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:38:38,837 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 32 [2022-02-15 11:38:38,882 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:38:38,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:38:39,349 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:38:39,349 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 154 treesize of output 170 [2022-02-15 11:38:39,368 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:38:39,368 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 70 [2022-02-15 11:39:14,472 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:39:14,473 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123957338] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 11:39:14,473 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 11:39:14,473 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 33, 33] total 86 [2022-02-15 11:39:14,473 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415016506] [2022-02-15 11:39:14,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 11:39:14,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-02-15 11:39:14,473 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:39:14,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-02-15 11:39:14,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=468, Invalid=6826, Unknown=16, NotChecked=0, Total=7310 [2022-02-15 11:39:14,475 INFO L87 Difference]: Start difference. First operand 8679 states and 27765 transitions. Second operand has 86 states, 86 states have (on average 4.883720930232558) internal successors, (420), 86 states have internal predecessors, (420), 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) [2022-02-15 11:39:24,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:39:24,993 INFO L93 Difference]: Finished difference Result 26711 states and 83976 transitions. [2022-02-15 11:39:24,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-02-15 11:39:24,994 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 4.883720930232558) internal successors, (420), 86 states have internal predecessors, (420), 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 168 [2022-02-15 11:39:24,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:39:25,053 INFO L225 Difference]: With dead ends: 26711 [2022-02-15 11:39:25,053 INFO L226 Difference]: Without dead ends: 24122 [2022-02-15 11:39:25,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 288 SyntacticMatches, 7 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 7628 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=4563, Invalid=26926, Unknown=17, NotChecked=0, Total=31506 [2022-02-15 11:39:25,055 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 6476 mSDsluCounter, 14800 mSDsCounter, 0 mSdLazyCounter, 6357 mSolverCounterSat, 371 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6476 SdHoareTripleChecker+Valid, 12558 SdHoareTripleChecker+Invalid, 9948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 371 IncrementalHoareTripleChecker+Valid, 6357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3220 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-02-15 11:39:25,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6476 Valid, 12558 Invalid, 9948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [371 Valid, 6357 Invalid, 0 Unknown, 3220 Unchecked, 2.6s Time] [2022-02-15 11:39:25,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24122 states. [2022-02-15 11:39:25,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24122 to 11115. [2022-02-15 11:39:25,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11115 states, 11114 states have (on average 3.209645492172035) internal successors, (35672), 11114 states have internal predecessors, (35672), 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) [2022-02-15 11:39:25,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11115 states to 11115 states and 35672 transitions. [2022-02-15 11:39:25,420 INFO L78 Accepts]: Start accepts. Automaton has 11115 states and 35672 transitions. Word has length 168 [2022-02-15 11:39:25,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:39:25,420 INFO L470 AbstractCegarLoop]: Abstraction has 11115 states and 35672 transitions. [2022-02-15 11:39:25,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 4.883720930232558) internal successors, (420), 86 states have internal predecessors, (420), 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) [2022-02-15 11:39:25,420 INFO L276 IsEmpty]: Start isEmpty. Operand 11115 states and 35672 transitions. [2022-02-15 11:39:25,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:39:25,438 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:39:25,438 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:39:25,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-02-15 11:39:25,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-02-15 11:39:25,639 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:39:25,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:39:25,640 INFO L85 PathProgramCache]: Analyzing trace with hash -850478213, now seen corresponding path program 26 times [2022-02-15 11:39:25,640 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:39:25,640 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805078464] [2022-02-15 11:39:25,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:39:25,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:39:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:39:26,354 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:39:26,354 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:39:26,354 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805078464] [2022-02-15 11:39:26,354 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805078464] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:39:26,354 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054572985] [2022-02-15 11:39:26,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 11:39:26,354 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:39:26,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:39:26,356 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:39:26,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-02-15 11:39:26,495 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-02-15 11:39:26,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:39:26,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 38 conjunts are in the unsatisfiable core [2022-02-15 11:39:26,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:39:26,529 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-15 11:39:26,614 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-15 11:39:26,615 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-15 11:39:27,085 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:39:27,288 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:39:27,289 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:39:27,316 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:39:27,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 11:39:27,316 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054572985] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:39:27,317 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 11:39:27,317 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [29] total 44 [2022-02-15 11:39:27,317 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921925411] [2022-02-15 11:39:27,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:39:27,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 11:39:27,317 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:39:27,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 11:39:27,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1761, Unknown=0, NotChecked=0, Total=1892 [2022-02-15 11:39:27,318 INFO L87 Difference]: Start difference. First operand 11115 states and 35672 transitions. Second operand has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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) [2022-02-15 11:39:28,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:39:28,163 INFO L93 Difference]: Finished difference Result 14634 states and 45945 transitions. [2022-02-15 11:39:28,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-15 11:39:28,164 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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 168 [2022-02-15 11:39:28,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:39:28,199 INFO L225 Difference]: With dead ends: 14634 [2022-02-15 11:39:28,199 INFO L226 Difference]: Without dead ends: 14060 [2022-02-15 11:39:28,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 158 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1053 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=369, Invalid=4053, Unknown=0, NotChecked=0, Total=4422 [2022-02-15 11:39:28,200 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 846 mSDsluCounter, 2970 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 2854 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 430 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 11:39:28,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [846 Valid, 2854 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 709 Invalid, 0 Unknown, 430 Unchecked, 0.3s Time] [2022-02-15 11:39:28,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14060 states. [2022-02-15 11:39:28,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14060 to 11074. [2022-02-15 11:39:28,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11074 states, 11073 states have (on average 3.205003160841687) internal successors, (35489), 11073 states have internal predecessors, (35489), 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) [2022-02-15 11:39:28,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11074 states to 11074 states and 35489 transitions. [2022-02-15 11:39:28,435 INFO L78 Accepts]: Start accepts. Automaton has 11074 states and 35489 transitions. Word has length 168 [2022-02-15 11:39:28,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:39:28,435 INFO L470 AbstractCegarLoop]: Abstraction has 11074 states and 35489 transitions. [2022-02-15 11:39:28,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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) [2022-02-15 11:39:28,435 INFO L276 IsEmpty]: Start isEmpty. Operand 11074 states and 35489 transitions. [2022-02-15 11:39:28,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:39:28,453 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:39:28,454 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:39:28,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-02-15 11:39:28,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-02-15 11:39:28,663 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:39:28,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:39:28,663 INFO L85 PathProgramCache]: Analyzing trace with hash 258630463, now seen corresponding path program 27 times [2022-02-15 11:39:28,663 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:39:28,663 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777639666] [2022-02-15 11:39:28,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:39:28,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:39:28,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:39:29,374 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:39:29,374 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:39:29,374 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777639666] [2022-02-15 11:39:29,374 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777639666] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:39:29,374 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028959050] [2022-02-15 11:39:29,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 11:39:29,375 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:39:29,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:39:29,376 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:39:29,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-02-15 11:39:29,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-02-15 11:39:29,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:39:29,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 38 conjunts are in the unsatisfiable core [2022-02-15 11:39:29,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:39:29,553 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-15 11:39:29,653 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-15 11:39:29,653 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-15 11:39:30,116 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:39:30,303 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:39:30,303 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:39:30,328 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:39:30,329 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 11:39:30,329 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028959050] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:39:30,329 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 11:39:30,329 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [29] total 44 [2022-02-15 11:39:30,329 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471816199] [2022-02-15 11:39:30,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:39:30,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 11:39:30,330 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:39:30,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 11:39:30,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1761, Unknown=0, NotChecked=0, Total=1892 [2022-02-15 11:39:30,330 INFO L87 Difference]: Start difference. First operand 11074 states and 35489 transitions. Second operand has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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) [2022-02-15 11:39:31,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:39:31,221 INFO L93 Difference]: Finished difference Result 14061 states and 44238 transitions. [2022-02-15 11:39:31,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-15 11:39:31,221 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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 168 [2022-02-15 11:39:31,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:39:31,252 INFO L225 Difference]: With dead ends: 14061 [2022-02-15 11:39:31,252 INFO L226 Difference]: Without dead ends: 13977 [2022-02-15 11:39:31,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=355, Invalid=3935, Unknown=0, NotChecked=0, Total=4290 [2022-02-15 11:39:31,253 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 835 mSDsluCounter, 3331 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 3106 SdHoareTripleChecker+Invalid, 1466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 600 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 11:39:31,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [835 Valid, 3106 Invalid, 1466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 823 Invalid, 0 Unknown, 600 Unchecked, 0.3s Time] [2022-02-15 11:39:31,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13977 states. [2022-02-15 11:39:31,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13977 to 11145. [2022-02-15 11:39:31,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11145 states, 11144 states have (on average 3.2035175879396984) internal successors, (35700), 11144 states have internal predecessors, (35700), 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) [2022-02-15 11:39:31,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11145 states to 11145 states and 35700 transitions. [2022-02-15 11:39:31,464 INFO L78 Accepts]: Start accepts. Automaton has 11145 states and 35700 transitions. Word has length 168 [2022-02-15 11:39:31,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:39:31,464 INFO L470 AbstractCegarLoop]: Abstraction has 11145 states and 35700 transitions. [2022-02-15 11:39:31,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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) [2022-02-15 11:39:31,465 INFO L276 IsEmpty]: Start isEmpty. Operand 11145 states and 35700 transitions. [2022-02-15 11:39:31,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:39:31,488 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:39:31,488 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:39:31,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-02-15 11:39:31,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-02-15 11:39:31,698 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:39:31,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:39:31,698 INFO L85 PathProgramCache]: Analyzing trace with hash -491759903, now seen corresponding path program 28 times [2022-02-15 11:39:31,698 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:39:31,698 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456374448] [2022-02-15 11:39:31,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:39:31,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:39:31,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:39:32,329 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:39:32,329 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:39:32,329 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456374448] [2022-02-15 11:39:32,329 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456374448] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:39:32,329 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726035586] [2022-02-15 11:39:32,329 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 11:39:32,329 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:39:32,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:39:32,331 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:39:32,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-02-15 11:39:32,451 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 11:39:32,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:39:32,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 66 conjunts are in the unsatisfiable core [2022-02-15 11:39:32,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:39:32,486 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-15 11:39:32,636 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-15 11:39:32,636 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-15 11:39:33,755 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:39:34,216 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:39:34,217 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 32 [2022-02-15 11:39:34,257 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:39:34,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:39:34,693 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:39:34,694 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 154 treesize of output 170 [2022-02-15 11:39:34,712 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:39:34,712 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 70 [2022-02-15 11:40:45,354 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:40:45,354 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726035586] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 11:40:45,354 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 11:40:45,354 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 33, 33] total 85 [2022-02-15 11:40:45,355 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895412746] [2022-02-15 11:40:45,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 11:40:45,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2022-02-15 11:40:45,355 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:40:45,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2022-02-15 11:40:45,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=6664, Unknown=13, NotChecked=0, Total=7140 [2022-02-15 11:40:45,356 INFO L87 Difference]: Start difference. First operand 11145 states and 35700 transitions. Second operand has 85 states, 85 states have (on average 4.9411764705882355) internal successors, (420), 85 states have internal predecessors, (420), 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) [2022-02-15 11:40:52,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:40:52,949 INFO L93 Difference]: Finished difference Result 26739 states and 82749 transitions. [2022-02-15 11:40:52,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-02-15 11:40:52,949 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 4.9411764705882355) internal successors, (420), 85 states have internal predecessors, (420), 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 168 [2022-02-15 11:40:52,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:40:53,020 INFO L225 Difference]: With dead ends: 26739 [2022-02-15 11:40:53,020 INFO L226 Difference]: Without dead ends: 25348 [2022-02-15 11:40:53,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 286 SyntacticMatches, 8 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5944 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=3464, Invalid=21962, Unknown=14, NotChecked=0, Total=25440 [2022-02-15 11:40:53,022 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 5969 mSDsluCounter, 12597 mSDsCounter, 0 mSdLazyCounter, 4711 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5969 SdHoareTripleChecker+Valid, 10894 SdHoareTripleChecker+Invalid, 7026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 4711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2017 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-02-15 11:40:53,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5969 Valid, 10894 Invalid, 7026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 4711 Invalid, 0 Unknown, 2017 Unchecked, 1.9s Time] [2022-02-15 11:40:53,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25348 states. [2022-02-15 11:40:53,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25348 to 11902. [2022-02-15 11:40:53,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11902 states, 11901 states have (on average 3.1883035039072345) internal successors, (37944), 11901 states have internal predecessors, (37944), 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) [2022-02-15 11:40:53,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11902 states to 11902 states and 37944 transitions. [2022-02-15 11:40:53,391 INFO L78 Accepts]: Start accepts. Automaton has 11902 states and 37944 transitions. Word has length 168 [2022-02-15 11:40:53,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:40:53,392 INFO L470 AbstractCegarLoop]: Abstraction has 11902 states and 37944 transitions. [2022-02-15 11:40:53,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 4.9411764705882355) internal successors, (420), 85 states have internal predecessors, (420), 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) [2022-02-15 11:40:53,392 INFO L276 IsEmpty]: Start isEmpty. Operand 11902 states and 37944 transitions. [2022-02-15 11:40:53,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:40:53,412 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:40:53,412 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:40:53,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-02-15 11:40:53,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:40:53,613 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:40:53,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:40:53,613 INFO L85 PathProgramCache]: Analyzing trace with hash 169094837, now seen corresponding path program 29 times [2022-02-15 11:40:53,613 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:40:53,613 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433230914] [2022-02-15 11:40:53,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:40:53,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:40:53,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:40:54,449 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:40:54,450 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:40:54,450 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433230914] [2022-02-15 11:40:54,450 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433230914] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:40:54,450 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269883621] [2022-02-15 11:40:54,450 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 11:40:54,450 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:40:54,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:40:54,451 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:40:54,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-02-15 11:40:54,568 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-15 11:40:54,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:40:54,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-15 11:40:54,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:40:54,629 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-15 11:40:54,713 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-15 11:40:54,713 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-15 11:40:55,186 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:40:55,367 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:40:55,368 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:40:55,392 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-15 11:40:55,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:40:55,555 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1056 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1056) c_~f~0.base))) (= (select .cse0 (+ c_~f~0.offset (* c_~i~0 4))) (select .cse0 (+ (* (select .cse0 (+ c_~f~0.offset (* c_~j~0 4))) 4) c_~f~0.offset))))) is different from false [2022-02-15 11:40:55,592 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:40:55,592 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 122 [2022-02-15 11:40:55,621 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:40:55,622 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 71 [2022-02-15 11:40:56,363 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:40:56,363 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269883621] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-15 11:40:56,363 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-15 11:40:56,363 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [30, 22] total 56 [2022-02-15 11:40:56,363 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132542635] [2022-02-15 11:40:56,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:40:56,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 11:40:56,364 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:40:56,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 11:40:56,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=2786, Unknown=1, NotChecked=106, Total=3080 [2022-02-15 11:40:56,365 INFO L87 Difference]: Start difference. First operand 11902 states and 37944 transitions. Second operand has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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) [2022-02-15 11:40:57,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:40:57,491 INFO L93 Difference]: Finished difference Result 16171 states and 51195 transitions. [2022-02-15 11:40:57,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-15 11:40:57,491 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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 168 [2022-02-15 11:40:57,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:40:57,519 INFO L225 Difference]: With dead ends: 16171 [2022-02-15 11:40:57,519 INFO L226 Difference]: Without dead ends: 12356 [2022-02-15 11:40:57,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 311 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1254 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=468, Invalid=5387, Unknown=1, NotChecked=150, Total=6006 [2022-02-15 11:40:57,521 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 1246 mSDsluCounter, 2661 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1246 SdHoareTripleChecker+Valid, 2566 SdHoareTripleChecker+Invalid, 1614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 263 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 11:40:57,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1246 Valid, 2566 Invalid, 1614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1284 Invalid, 0 Unknown, 263 Unchecked, 0.5s Time] [2022-02-15 11:40:57,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12356 states. [2022-02-15 11:40:57,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12356 to 8676. [2022-02-15 11:40:57,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8676 states, 8675 states have (on average 3.2419596541786744) internal successors, (28124), 8675 states have internal predecessors, (28124), 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) [2022-02-15 11:40:57,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8676 states to 8676 states and 28124 transitions. [2022-02-15 11:40:57,690 INFO L78 Accepts]: Start accepts. Automaton has 8676 states and 28124 transitions. Word has length 168 [2022-02-15 11:40:57,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:40:57,691 INFO L470 AbstractCegarLoop]: Abstraction has 8676 states and 28124 transitions. [2022-02-15 11:40:57,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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) [2022-02-15 11:40:57,691 INFO L276 IsEmpty]: Start isEmpty. Operand 8676 states and 28124 transitions. [2022-02-15 11:40:57,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:40:57,705 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:40:57,705 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:40:57,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-02-15 11:40:57,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:40:57,906 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:40:57,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:40:57,907 INFO L85 PathProgramCache]: Analyzing trace with hash -364256853, now seen corresponding path program 30 times [2022-02-15 11:40:57,907 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:40:57,907 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900501866] [2022-02-15 11:40:57,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:40:57,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:40:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:40:57,985 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:40:57,985 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:40:57,985 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900501866] [2022-02-15 11:40:57,985 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900501866] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:40:57,985 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 11:40:57,986 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 11:40:57,986 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942584370] [2022-02-15 11:40:57,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:40:57,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 11:40:57,986 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:40:57,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 11:40:57,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-02-15 11:40:57,987 INFO L87 Difference]: Start difference. First operand 8676 states and 28124 transitions. Second operand has 8 states, 8 states have (on average 20.125) internal successors, (161), 8 states have internal predecessors, (161), 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) [2022-02-15 11:40:58,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:40:58,274 INFO L93 Difference]: Finished difference Result 15689 states and 50205 transitions. [2022-02-15 11:40:58,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-15 11:40:58,274 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.125) internal successors, (161), 8 states have internal predecessors, (161), 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 168 [2022-02-15 11:40:58,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:40:58,309 INFO L225 Difference]: With dead ends: 15689 [2022-02-15 11:40:58,309 INFO L226 Difference]: Without dead ends: 15659 [2022-02-15 11:40:58,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-02-15 11:40:58,310 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 591 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 11:40:58,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [591 Valid, 1000 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 11:40:58,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15659 states. [2022-02-15 11:40:58,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15659 to 9324. [2022-02-15 11:40:58,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9324 states, 9323 states have (on average 3.231899603132039) internal successors, (30131), 9323 states have internal predecessors, (30131), 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) [2022-02-15 11:40:58,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9324 states to 9324 states and 30131 transitions. [2022-02-15 11:40:58,503 INFO L78 Accepts]: Start accepts. Automaton has 9324 states and 30131 transitions. Word has length 168 [2022-02-15 11:40:58,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:40:58,503 INFO L470 AbstractCegarLoop]: Abstraction has 9324 states and 30131 transitions. [2022-02-15 11:40:58,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.125) internal successors, (161), 8 states have internal predecessors, (161), 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) [2022-02-15 11:40:58,503 INFO L276 IsEmpty]: Start isEmpty. Operand 9324 states and 30131 transitions. [2022-02-15 11:40:58,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:40:58,518 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:40:58,518 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:40:58,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-02-15 11:40:58,518 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:40:58,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:40:58,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1868030797, now seen corresponding path program 31 times [2022-02-15 11:40:58,519 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:40:58,519 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327166477] [2022-02-15 11:40:58,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:40:58,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:40:58,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:40:59,163 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:40:59,163 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:40:59,164 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327166477] [2022-02-15 11:40:59,164 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327166477] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:40:59,164 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964835942] [2022-02-15 11:40:59,164 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 11:40:59,164 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:40:59,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:40:59,168 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:40:59,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-02-15 11:40:59,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:40:59,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 56 conjunts are in the unsatisfiable core [2022-02-15 11:40:59,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:41:01,286 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-15 11:41:01,300 INFO L353 Elim1Store]: treesize reduction 35, result has 32.7 percent of original size [2022-02-15 11:41:01,300 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 39 [2022-02-15 11:41:01,333 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:41:01,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:41:01,613 INFO L353 Elim1Store]: treesize reduction 14, result has 80.8 percent of original size [2022-02-15 11:41:01,614 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 80 treesize of output 90 [2022-02-15 11:41:02,128 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:41:02,129 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964835942] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-15 11:41:02,129 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-15 11:41:02,129 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [27, 31] total 56 [2022-02-15 11:41:02,129 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664335979] [2022-02-15 11:41:02,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:41:02,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 11:41:02,129 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:41:02,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 11:41:02,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=2769, Unknown=0, NotChecked=0, Total=3080 [2022-02-15 11:41:02,130 INFO L87 Difference]: Start difference. First operand 9324 states and 30131 transitions. Second operand has 18 states, 18 states have (on average 8.944444444444445) internal successors, (161), 18 states have internal predecessors, (161), 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) [2022-02-15 11:41:02,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:41:02,873 INFO L93 Difference]: Finished difference Result 12536 states and 40358 transitions. [2022-02-15 11:41:02,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 11:41:02,873 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.944444444444445) internal successors, (161), 18 states have internal predecessors, (161), 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 168 [2022-02-15 11:41:02,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:41:02,898 INFO L225 Difference]: With dead ends: 12536 [2022-02-15 11:41:02,898 INFO L226 Difference]: Without dead ends: 11744 [2022-02-15 11:41:02,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 307 SyntacticMatches, 3 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1323 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=424, Invalid=3866, Unknown=0, NotChecked=0, Total=4290 [2022-02-15 11:41:02,899 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 574 mSDsluCounter, 2342 mSDsCounter, 0 mSdLazyCounter, 1094 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 2263 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 11:41:02,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [574 Valid, 2263 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1094 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 11:41:02,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11744 states. [2022-02-15 11:41:03,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11744 to 9694. [2022-02-15 11:41:03,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9694 states, 9693 states have (on average 3.226039409883421) internal successors, (31270), 9693 states have internal predecessors, (31270), 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) [2022-02-15 11:41:03,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9694 states to 9694 states and 31270 transitions. [2022-02-15 11:41:03,094 INFO L78 Accepts]: Start accepts. Automaton has 9694 states and 31270 transitions. Word has length 168 [2022-02-15 11:41:03,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:41:03,094 INFO L470 AbstractCegarLoop]: Abstraction has 9694 states and 31270 transitions. [2022-02-15 11:41:03,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.944444444444445) internal successors, (161), 18 states have internal predecessors, (161), 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) [2022-02-15 11:41:03,094 INFO L276 IsEmpty]: Start isEmpty. Operand 9694 states and 31270 transitions. [2022-02-15 11:41:03,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:41:03,111 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:41:03,111 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:41:03,129 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-02-15 11:41:03,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:41:03,313 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:41:03,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:41:03,314 INFO L85 PathProgramCache]: Analyzing trace with hash 949197129, now seen corresponding path program 32 times [2022-02-15 11:41:03,314 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:41:03,314 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326299610] [2022-02-15 11:41:03,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:41:03,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:41:03,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:41:03,888 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:41:03,889 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:41:03,889 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326299610] [2022-02-15 11:41:03,889 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326299610] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:41:03,889 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487690193] [2022-02-15 11:41:03,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 11:41:03,889 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:41:03,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:41:03,891 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:41:03,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-02-15 11:41:04,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-02-15 11:41:04,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:41:04,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-15 11:41:04,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:41:04,433 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:41:04,434 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:41:04,459 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:41:04,460 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 11:41:04,460 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487690193] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:41:04,460 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 11:41:04,460 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [27] total 34 [2022-02-15 11:41:04,460 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231145437] [2022-02-15 11:41:04,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:41:04,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 11:41:04,460 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:41:04,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 11:41:04,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1035, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 11:41:04,461 INFO L87 Difference]: Start difference. First operand 9694 states and 31270 transitions. Second operand has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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) [2022-02-15 11:41:04,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:41:04,805 INFO L93 Difference]: Finished difference Result 11621 states and 37516 transitions. [2022-02-15 11:41:04,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 11:41:04,805 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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 168 [2022-02-15 11:41:04,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:41:04,829 INFO L225 Difference]: With dead ends: 11621 [2022-02-15 11:41:04,830 INFO L226 Difference]: Without dead ends: 11240 [2022-02-15 11:41:04,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=134, Invalid=1672, Unknown=0, NotChecked=0, Total=1806 [2022-02-15 11:41:04,830 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 156 mSDsluCounter, 1926 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 1898 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 286 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 11:41:04,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 1898 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 429 Invalid, 0 Unknown, 286 Unchecked, 0.2s Time] [2022-02-15 11:41:04,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11240 states. [2022-02-15 11:41:04,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11240 to 9966. [2022-02-15 11:41:04,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9966 states, 9965 states have (on average 3.2299046663321627) internal successors, (32186), 9965 states have internal predecessors, (32186), 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) [2022-02-15 11:41:04,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9966 states to 9966 states and 32186 transitions. [2022-02-15 11:41:04,993 INFO L78 Accepts]: Start accepts. Automaton has 9966 states and 32186 transitions. Word has length 168 [2022-02-15 11:41:04,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:41:04,993 INFO L470 AbstractCegarLoop]: Abstraction has 9966 states and 32186 transitions. [2022-02-15 11:41:04,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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) [2022-02-15 11:41:04,993 INFO L276 IsEmpty]: Start isEmpty. Operand 9966 states and 32186 transitions. [2022-02-15 11:41:05,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:41:05,009 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:41:05,009 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:41:05,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-02-15 11:41:05,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-02-15 11:41:05,210 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:41:05,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:41:05,210 INFO L85 PathProgramCache]: Analyzing trace with hash -639869989, now seen corresponding path program 33 times [2022-02-15 11:41:05,210 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:41:05,210 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771829938] [2022-02-15 11:41:05,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:41:05,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:41:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:41:05,841 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:41:05,841 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:41:05,841 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771829938] [2022-02-15 11:41:05,841 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771829938] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:41:05,841 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367599912] [2022-02-15 11:41:05,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 11:41:05,841 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:41:05,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:41:05,842 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:41:05,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-02-15 11:41:05,960 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-02-15 11:41:05,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:41:05,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-15 11:41:05,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:41:06,362 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:41:06,362 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:41:06,387 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:41:06,388 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 11:41:06,388 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367599912] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:41:06,388 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 11:41:06,388 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [28] total 35 [2022-02-15 11:41:06,388 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843536725] [2022-02-15 11:41:06,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:41:06,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 11:41:06,388 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:41:06,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 11:41:06,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1095, Unknown=0, NotChecked=0, Total=1190 [2022-02-15 11:41:06,389 INFO L87 Difference]: Start difference. First operand 9966 states and 32186 transitions. Second operand has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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) [2022-02-15 11:41:06,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:41:06,712 INFO L93 Difference]: Finished difference Result 13196 states and 42389 transitions. [2022-02-15 11:41:06,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 11:41:06,712 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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 168 [2022-02-15 11:41:06,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:41:06,744 INFO L225 Difference]: With dead ends: 13196 [2022-02-15 11:41:06,744 INFO L226 Difference]: Without dead ends: 13163 [2022-02-15 11:41:06,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=130, Invalid=1592, Unknown=0, NotChecked=0, Total=1722 [2022-02-15 11:41:06,744 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 133 mSDsluCounter, 2128 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 2083 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 412 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 11:41:06,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 2083 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 371 Invalid, 0 Unknown, 412 Unchecked, 0.1s Time] [2022-02-15 11:41:06,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13163 states. [2022-02-15 11:41:06,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13163 to 10303. [2022-02-15 11:41:06,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10303 states, 10302 states have (on average 3.2313143079013784) internal successors, (33289), 10302 states have internal predecessors, (33289), 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) [2022-02-15 11:41:06,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10303 states to 10303 states and 33289 transitions. [2022-02-15 11:41:06,955 INFO L78 Accepts]: Start accepts. Automaton has 10303 states and 33289 transitions. Word has length 168 [2022-02-15 11:41:06,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:41:06,955 INFO L470 AbstractCegarLoop]: Abstraction has 10303 states and 33289 transitions. [2022-02-15 11:41:06,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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) [2022-02-15 11:41:06,956 INFO L276 IsEmpty]: Start isEmpty. Operand 10303 states and 33289 transitions. [2022-02-15 11:41:06,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:41:06,973 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:41:06,973 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:41:06,990 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-02-15 11:41:07,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:41:07,174 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:41:07,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:41:07,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1463393545, now seen corresponding path program 34 times [2022-02-15 11:41:07,174 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:41:07,174 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462795022] [2022-02-15 11:41:07,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:41:07,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:41:07,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:41:07,716 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:41:07,717 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:41:07,717 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462795022] [2022-02-15 11:41:07,717 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462795022] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:41:07,717 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073762890] [2022-02-15 11:41:07,717 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 11:41:07,717 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:41:07,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:41:07,718 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:41:07,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-02-15 11:41:07,835 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 11:41:07,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:41:07,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 54 conjunts are in the unsatisfiable core [2022-02-15 11:41:07,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:41:09,076 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:41:09,076 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 32 [2022-02-15 11:41:09,112 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:41:09,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:41:09,414 INFO L353 Elim1Store]: treesize reduction 14, result has 80.8 percent of original size [2022-02-15 11:41:09,414 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 80 treesize of output 90 [2022-02-15 11:41:09,984 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:41:09,985 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073762890] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-15 11:41:09,985 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-15 11:41:09,985 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [27, 26] total 59 [2022-02-15 11:41:09,985 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424683864] [2022-02-15 11:41:09,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:41:09,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 11:41:09,985 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:41:09,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 11:41:09,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=3112, Unknown=0, NotChecked=0, Total=3422 [2022-02-15 11:41:09,986 INFO L87 Difference]: Start difference. First operand 10303 states and 33289 transitions. Second operand has 18 states, 18 states have (on average 8.944444444444445) internal successors, (161), 18 states have internal predecessors, (161), 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) [2022-02-15 11:41:10,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:41:10,863 INFO L93 Difference]: Finished difference Result 12378 states and 39703 transitions. [2022-02-15 11:41:10,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 11:41:10,863 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.944444444444445) internal successors, (161), 18 states have internal predecessors, (161), 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 168 [2022-02-15 11:41:10,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:41:10,889 INFO L225 Difference]: With dead ends: 12378 [2022-02-15 11:41:10,889 INFO L226 Difference]: Without dead ends: 12195 [2022-02-15 11:41:10,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 305 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1380 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=436, Invalid=4394, Unknown=0, NotChecked=0, Total=4830 [2022-02-15 11:41:10,890 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 439 mSDsluCounter, 2532 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 2422 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 11:41:10,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [439 Valid, 2422 Invalid, 1236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 11:41:10,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12195 states. [2022-02-15 11:41:11,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12195 to 10285. [2022-02-15 11:41:11,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10285 states, 10284 states have (on average 3.2326915597043953) internal successors, (33245), 10284 states have internal predecessors, (33245), 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) [2022-02-15 11:41:11,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10285 states to 10285 states and 33245 transitions. [2022-02-15 11:41:11,141 INFO L78 Accepts]: Start accepts. Automaton has 10285 states and 33245 transitions. Word has length 168 [2022-02-15 11:41:11,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:41:11,141 INFO L470 AbstractCegarLoop]: Abstraction has 10285 states and 33245 transitions. [2022-02-15 11:41:11,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.944444444444445) internal successors, (161), 18 states have internal predecessors, (161), 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) [2022-02-15 11:41:11,141 INFO L276 IsEmpty]: Start isEmpty. Operand 10285 states and 33245 transitions. [2022-02-15 11:41:11,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:41:11,159 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:41:11,159 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:41:11,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-02-15 11:41:11,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:41:11,360 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:41:11,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:41:11,362 INFO L85 PathProgramCache]: Analyzing trace with hash 2123231459, now seen corresponding path program 35 times [2022-02-15 11:41:11,362 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:41:11,362 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142205152] [2022-02-15 11:41:11,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:41:11,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:41:11,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:41:11,515 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:41:11,515 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:41:11,515 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142205152] [2022-02-15 11:41:11,516 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142205152] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:41:11,516 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 11:41:11,516 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-15 11:41:11,516 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585166743] [2022-02-15 11:41:11,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:41:11,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 11:41:11,517 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:41:11,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 11:41:11,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-02-15 11:41:11,518 INFO L87 Difference]: Start difference. First operand 10285 states and 33245 transitions. Second operand has 11 states, 11 states have (on average 14.636363636363637) internal successors, (161), 11 states have internal predecessors, (161), 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) [2022-02-15 11:41:12,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:41:12,026 INFO L93 Difference]: Finished difference Result 13823 states and 44371 transitions. [2022-02-15 11:41:12,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-15 11:41:12,027 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.636363636363637) internal successors, (161), 11 states have internal predecessors, (161), 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 168 [2022-02-15 11:41:12,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:41:12,057 INFO L225 Difference]: With dead ends: 13823 [2022-02-15 11:41:12,057 INFO L226 Difference]: Without dead ends: 12602 [2022-02-15 11:41:12,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=515, Unknown=0, NotChecked=0, Total=650 [2022-02-15 11:41:12,057 INFO L933 BasicCegarLoop]: 269 mSDtfsCounter, 422 mSDsluCounter, 1768 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 1806 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 11:41:12,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [422 Valid, 1806 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 11:41:12,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12602 states. [2022-02-15 11:41:12,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12602 to 10604. [2022-02-15 11:41:12,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10604 states, 10603 states have (on average 3.2271998490993115) internal successors, (34218), 10603 states have internal predecessors, (34218), 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) [2022-02-15 11:41:12,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10604 states to 10604 states and 34218 transitions. [2022-02-15 11:41:12,256 INFO L78 Accepts]: Start accepts. Automaton has 10604 states and 34218 transitions. Word has length 168 [2022-02-15 11:41:12,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:41:12,256 INFO L470 AbstractCegarLoop]: Abstraction has 10604 states and 34218 transitions. [2022-02-15 11:41:12,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.636363636363637) internal successors, (161), 11 states have internal predecessors, (161), 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) [2022-02-15 11:41:12,256 INFO L276 IsEmpty]: Start isEmpty. Operand 10604 states and 34218 transitions. [2022-02-15 11:41:12,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:41:12,274 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:41:12,274 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:41:12,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-02-15 11:41:12,274 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:41:12,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:41:12,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1390335085, now seen corresponding path program 36 times [2022-02-15 11:41:12,275 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:41:12,275 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391194084] [2022-02-15 11:41:12,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:41:12,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:41:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:41:12,895 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:41:12,895 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:41:12,895 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391194084] [2022-02-15 11:41:12,896 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391194084] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:41:12,896 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754264495] [2022-02-15 11:41:12,896 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 11:41:12,896 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:41:12,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:41:12,897 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:41:12,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-02-15 11:41:13,018 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-02-15 11:41:13,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:41:13,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-15 11:41:13,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:41:13,466 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:41:13,466 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:41:13,491 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:41:13,492 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 11:41:13,492 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754264495] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:41:13,492 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 11:41:13,492 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [27] total 34 [2022-02-15 11:41:13,492 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003067083] [2022-02-15 11:41:13,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:41:13,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 11:41:13,493 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:41:13,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 11:41:13,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1034, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 11:41:13,493 INFO L87 Difference]: Start difference. First operand 10604 states and 34218 transitions. Second operand has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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) [2022-02-15 11:41:13,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:41:13,812 INFO L93 Difference]: Finished difference Result 12933 states and 41547 transitions. [2022-02-15 11:41:13,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 11:41:13,813 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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 168 [2022-02-15 11:41:13,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:41:13,844 INFO L225 Difference]: With dead ends: 12933 [2022-02-15 11:41:13,844 INFO L226 Difference]: Without dead ends: 12900 [2022-02-15 11:41:13,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=123, Invalid=1517, Unknown=0, NotChecked=0, Total=1640 [2022-02-15 11:41:13,845 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 112 mSDsluCounter, 2009 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 1993 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 348 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 11:41:13,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 1993 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 374 Invalid, 0 Unknown, 348 Unchecked, 0.1s Time] [2022-02-15 11:41:13,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12900 states. [2022-02-15 11:41:14,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12900 to 10624. [2022-02-15 11:41:14,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10624 states, 10623 states have (on average 3.2256424738774356) internal successors, (34266), 10623 states have internal predecessors, (34266), 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) [2022-02-15 11:41:14,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10624 states to 10624 states and 34266 transitions. [2022-02-15 11:41:14,048 INFO L78 Accepts]: Start accepts. Automaton has 10624 states and 34266 transitions. Word has length 168 [2022-02-15 11:41:14,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:41:14,048 INFO L470 AbstractCegarLoop]: Abstraction has 10624 states and 34266 transitions. [2022-02-15 11:41:14,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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) [2022-02-15 11:41:14,049 INFO L276 IsEmpty]: Start isEmpty. Operand 10624 states and 34266 transitions. [2022-02-15 11:41:14,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:41:14,112 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:41:14,112 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:41:14,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-02-15 11:41:14,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-02-15 11:41:14,313 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:41:14,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:41:14,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1817469435, now seen corresponding path program 37 times [2022-02-15 11:41:14,314 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:41:14,314 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17643086] [2022-02-15 11:41:14,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:41:14,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:41:14,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:41:14,941 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:41:14,941 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:41:14,942 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17643086] [2022-02-15 11:41:14,942 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17643086] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:41:14,942 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236970174] [2022-02-15 11:41:14,942 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 11:41:14,942 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:41:14,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:41:14,943 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:41:14,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-02-15 11:41:15,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:41:15,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 58 conjunts are in the unsatisfiable core [2022-02-15 11:41:15,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:41:16,917 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-15 11:41:16,931 INFO L353 Elim1Store]: treesize reduction 35, result has 32.7 percent of original size [2022-02-15 11:41:16,931 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 39 [2022-02-15 11:41:16,963 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:41:16,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:41:17,304 INFO L353 Elim1Store]: treesize reduction 14, result has 80.8 percent of original size [2022-02-15 11:41:17,304 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 80 treesize of output 90 [2022-02-15 11:41:17,834 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:41:17,834 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236970174] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-15 11:41:17,834 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-15 11:41:17,834 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [27, 31] total 55 [2022-02-15 11:41:17,834 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165350355] [2022-02-15 11:41:17,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:41:17,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 11:41:17,835 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:41:17,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 11:41:17,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=2683, Unknown=0, NotChecked=0, Total=2970 [2022-02-15 11:41:17,835 INFO L87 Difference]: Start difference. First operand 10624 states and 34266 transitions. Second operand has 18 states, 18 states have (on average 8.944444444444445) internal successors, (161), 18 states have internal predecessors, (161), 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) [2022-02-15 11:41:18,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:41:18,651 INFO L93 Difference]: Finished difference Result 12360 states and 39691 transitions. [2022-02-15 11:41:18,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 11:41:18,652 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.944444444444445) internal successors, (161), 18 states have internal predecessors, (161), 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 168 [2022-02-15 11:41:18,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:41:18,678 INFO L225 Difference]: With dead ends: 12360 [2022-02-15 11:41:18,678 INFO L226 Difference]: Without dead ends: 11722 [2022-02-15 11:41:18,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 307 SyntacticMatches, 3 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1212 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=404, Invalid=3756, Unknown=0, NotChecked=0, Total=4160 [2022-02-15 11:41:18,679 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 391 mSDsluCounter, 2414 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 2340 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 11:41:18,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [391 Valid, 2340 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1102 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 11:41:18,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11722 states. [2022-02-15 11:41:18,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11722 to 10393. [2022-02-15 11:41:18,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10393 states, 10392 states have (on average 3.2379715165511933) internal successors, (33649), 10392 states have internal predecessors, (33649), 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) [2022-02-15 11:41:18,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10393 states to 10393 states and 33649 transitions. [2022-02-15 11:41:18,865 INFO L78 Accepts]: Start accepts. Automaton has 10393 states and 33649 transitions. Word has length 168 [2022-02-15 11:41:18,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:41:18,865 INFO L470 AbstractCegarLoop]: Abstraction has 10393 states and 33649 transitions. [2022-02-15 11:41:18,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.944444444444445) internal successors, (161), 18 states have internal predecessors, (161), 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) [2022-02-15 11:41:18,866 INFO L276 IsEmpty]: Start isEmpty. Operand 10393 states and 33649 transitions. [2022-02-15 11:41:18,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:41:18,882 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:41:18,882 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:41:18,899 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-02-15 11:41:19,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-02-15 11:41:19,083 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:41:19,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:41:19,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1082711665, now seen corresponding path program 38 times [2022-02-15 11:41:19,084 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:41:19,084 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29757146] [2022-02-15 11:41:19,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:41:19,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:41:19,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:41:19,941 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:41:19,941 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:41:19,941 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29757146] [2022-02-15 11:41:19,941 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29757146] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:41:19,941 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744733780] [2022-02-15 11:41:19,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 11:41:19,942 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:41:19,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:41:19,943 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:41:19,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-02-15 11:41:20,069 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-02-15 11:41:20,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:41:20,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-15 11:41:20,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:41:20,505 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:41:20,507 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:41:20,533 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:41:20,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 11:41:20,533 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744733780] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:41:20,533 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 11:41:20,533 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [28] total 35 [2022-02-15 11:41:20,533 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424968507] [2022-02-15 11:41:20,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:41:20,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 11:41:20,534 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:41:20,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 11:41:20,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1102, Unknown=0, NotChecked=0, Total=1190 [2022-02-15 11:41:20,534 INFO L87 Difference]: Start difference. First operand 10393 states and 33649 transitions. Second operand has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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) [2022-02-15 11:41:20,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:41:20,874 INFO L93 Difference]: Finished difference Result 13073 states and 42167 transitions. [2022-02-15 11:41:20,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-15 11:41:20,874 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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 168 [2022-02-15 11:41:20,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:41:20,903 INFO L225 Difference]: With dead ends: 13073 [2022-02-15 11:41:20,903 INFO L226 Difference]: Without dead ends: 13004 [2022-02-15 11:41:20,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=129, Invalid=1677, Unknown=0, NotChecked=0, Total=1806 [2022-02-15 11:41:20,904 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 137 mSDsluCounter, 1951 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1946 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 224 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 11:41:20,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 1946 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 412 Invalid, 0 Unknown, 224 Unchecked, 0.2s Time] [2022-02-15 11:41:20,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13004 states. [2022-02-15 11:41:21,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13004 to 10432. [2022-02-15 11:41:21,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10432 states, 10431 states have (on average 3.2352602818521716) internal successors, (33747), 10431 states have internal predecessors, (33747), 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) [2022-02-15 11:41:21,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10432 states to 10432 states and 33747 transitions. [2022-02-15 11:41:21,091 INFO L78 Accepts]: Start accepts. Automaton has 10432 states and 33747 transitions. Word has length 168 [2022-02-15 11:41:21,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:41:21,092 INFO L470 AbstractCegarLoop]: Abstraction has 10432 states and 33747 transitions. [2022-02-15 11:41:21,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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) [2022-02-15 11:41:21,092 INFO L276 IsEmpty]: Start isEmpty. Operand 10432 states and 33747 transitions. [2022-02-15 11:41:21,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:41:21,110 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:41:21,110 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:41:21,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-02-15 11:41:21,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-02-15 11:41:21,311 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:41:21,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:41:21,311 INFO L85 PathProgramCache]: Analyzing trace with hash 269029903, now seen corresponding path program 39 times [2022-02-15 11:41:21,311 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:41:21,311 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790666755] [2022-02-15 11:41:21,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:41:21,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:41:21,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:41:23,777 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:41:23,777 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:41:23,777 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790666755] [2022-02-15 11:41:23,777 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790666755] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:41:23,777 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408263985] [2022-02-15 11:41:23,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 11:41:23,777 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:41:23,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:41:23,779 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:41:23,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-02-15 11:41:23,907 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-02-15 11:41:23,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:41:23,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-15 11:41:23,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:41:24,380 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:41:24,380 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:41:24,410 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:41:24,410 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 11:41:24,410 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408263985] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:41:24,411 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 11:41:24,411 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [39] total 46 [2022-02-15 11:41:24,411 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528242678] [2022-02-15 11:41:24,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:41:24,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 11:41:24,411 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:41:24,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 11:41:24,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1926, Unknown=0, NotChecked=0, Total=2070 [2022-02-15 11:41:24,412 INFO L87 Difference]: Start difference. First operand 10432 states and 33747 transitions. Second operand has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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) [2022-02-15 11:41:24,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:41:24,799 INFO L93 Difference]: Finished difference Result 13138 states and 42163 transitions. [2022-02-15 11:41:24,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-15 11:41:24,800 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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 168 [2022-02-15 11:41:24,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:41:24,827 INFO L225 Difference]: With dead ends: 13138 [2022-02-15 11:41:24,827 INFO L226 Difference]: Without dead ends: 12115 [2022-02-15 11:41:24,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=188, Invalid=2674, Unknown=0, NotChecked=0, Total=2862 [2022-02-15 11:41:24,828 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 173 mSDsluCounter, 2097 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 2014 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 484 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 11:41:24,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 2014 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 432 Invalid, 0 Unknown, 484 Unchecked, 0.2s Time] [2022-02-15 11:41:24,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12115 states. [2022-02-15 11:41:24,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12115 to 10393. [2022-02-15 11:41:24,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10393 states, 10392 states have (on average 3.2155504234026173) internal successors, (33416), 10392 states have internal predecessors, (33416), 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) [2022-02-15 11:41:25,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10393 states to 10393 states and 33416 transitions. [2022-02-15 11:41:25,022 INFO L78 Accepts]: Start accepts. Automaton has 10393 states and 33416 transitions. Word has length 168 [2022-02-15 11:41:25,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:41:25,023 INFO L470 AbstractCegarLoop]: Abstraction has 10393 states and 33416 transitions. [2022-02-15 11:41:25,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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) [2022-02-15 11:41:25,023 INFO L276 IsEmpty]: Start isEmpty. Operand 10393 states and 33416 transitions. [2022-02-15 11:41:25,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:41:25,040 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:41:25,040 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:41:25,057 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2022-02-15 11:41:25,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:41:25,241 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:41:25,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:41:25,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1487348917, now seen corresponding path program 40 times [2022-02-15 11:41:25,241 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:41:25,241 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604518655] [2022-02-15 11:41:25,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:41:25,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:41:25,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:41:25,891 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:41:25,892 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:41:25,892 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604518655] [2022-02-15 11:41:25,892 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604518655] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:41:25,892 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918006366] [2022-02-15 11:41:25,892 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 11:41:25,892 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:41:25,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:41:25,893 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:41:25,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-02-15 11:41:26,018 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 11:41:26,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:41:26,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 54 conjunts are in the unsatisfiable core [2022-02-15 11:41:26,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:41:27,239 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:41:27,239 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 32 [2022-02-15 11:41:27,273 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:41:27,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:41:27,570 INFO L353 Elim1Store]: treesize reduction 14, result has 80.8 percent of original size [2022-02-15 11:41:27,570 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 80 treesize of output 90 [2022-02-15 11:41:28,156 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:41:28,156 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918006366] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-15 11:41:28,157 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-15 11:41:28,157 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [27, 26] total 59 [2022-02-15 11:41:28,157 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808744468] [2022-02-15 11:41:28,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:41:28,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 11:41:28,157 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:41:28,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 11:41:28,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=3120, Unknown=0, NotChecked=0, Total=3422 [2022-02-15 11:41:28,158 INFO L87 Difference]: Start difference. First operand 10393 states and 33416 transitions. Second operand has 18 states, 18 states have (on average 8.944444444444445) internal successors, (161), 18 states have internal predecessors, (161), 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) [2022-02-15 11:41:28,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:41:28,885 INFO L93 Difference]: Finished difference Result 12461 states and 39672 transitions. [2022-02-15 11:41:28,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 11:41:28,885 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.944444444444445) internal successors, (161), 18 states have internal predecessors, (161), 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 168 [2022-02-15 11:41:28,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:41:28,910 INFO L225 Difference]: With dead ends: 12461 [2022-02-15 11:41:28,911 INFO L226 Difference]: Without dead ends: 12020 [2022-02-15 11:41:28,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1390 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=422, Invalid=4270, Unknown=0, NotChecked=0, Total=4692 [2022-02-15 11:41:28,911 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 474 mSDsluCounter, 1967 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 1937 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 11:41:28,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [474 Valid, 1937 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 11:41:28,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12020 states. [2022-02-15 11:41:29,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12020 to 10397. [2022-02-15 11:41:29,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10397 states, 10396 states have (on average 3.2111388995767602) internal successors, (33383), 10396 states have internal predecessors, (33383), 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) [2022-02-15 11:41:29,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10397 states to 10397 states and 33383 transitions. [2022-02-15 11:41:29,108 INFO L78 Accepts]: Start accepts. Automaton has 10397 states and 33383 transitions. Word has length 168 [2022-02-15 11:41:29,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:41:29,108 INFO L470 AbstractCegarLoop]: Abstraction has 10397 states and 33383 transitions. [2022-02-15 11:41:29,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.944444444444445) internal successors, (161), 18 states have internal predecessors, (161), 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) [2022-02-15 11:41:29,108 INFO L276 IsEmpty]: Start isEmpty. Operand 10397 states and 33383 transitions. [2022-02-15 11:41:29,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:41:29,125 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:41:29,125 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:41:29,142 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-02-15 11:41:29,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:41:29,326 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:41:29,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:41:29,327 INFO L85 PathProgramCache]: Analyzing trace with hash 443116903, now seen corresponding path program 41 times [2022-02-15 11:41:29,327 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:41:29,327 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230980461] [2022-02-15 11:41:29,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:41:29,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:41:29,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:41:30,057 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:41:30,058 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:41:30,058 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230980461] [2022-02-15 11:41:30,058 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230980461] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:41:30,058 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432113275] [2022-02-15 11:41:30,058 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 11:41:30,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:41:30,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:41:30,059 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:41:30,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-02-15 11:41:30,189 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-15 11:41:30,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:41:30,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 32 conjunts are in the unsatisfiable core [2022-02-15 11:41:30,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:41:30,692 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:41:30,692 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:41:30,719 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-15 11:41:30,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:41:30,919 INFO L353 Elim1Store]: treesize reduction 14, result has 80.8 percent of original size [2022-02-15 11:41:30,919 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 78 [2022-02-15 11:41:31,180 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:41:31,180 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432113275] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-15 11:41:31,180 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-15 11:41:31,180 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [29, 15] total 45 [2022-02-15 11:41:31,180 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329120303] [2022-02-15 11:41:31,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:41:31,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 11:41:31,181 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:41:31,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 11:41:31,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1839, Unknown=0, NotChecked=0, Total=1980 [2022-02-15 11:41:31,181 INFO L87 Difference]: Start difference. First operand 10397 states and 33383 transitions. Second operand has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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) [2022-02-15 11:41:32,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:41:32,082 INFO L93 Difference]: Finished difference Result 16780 states and 53976 transitions. [2022-02-15 11:41:32,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-15 11:41:32,083 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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 168 [2022-02-15 11:41:32,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:41:32,124 INFO L225 Difference]: With dead ends: 16780 [2022-02-15 11:41:32,124 INFO L226 Difference]: Without dead ends: 15920 [2022-02-15 11:41:32,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 322 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=267, Invalid=3273, Unknown=0, NotChecked=0, Total=3540 [2022-02-15 11:41:32,125 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 410 mSDsluCounter, 2705 mSDsCounter, 0 mSdLazyCounter, 1383 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 2595 SdHoareTripleChecker+Invalid, 1395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 11:41:32,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [410 Valid, 2595 Invalid, 1395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1383 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 11:41:32,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15920 states. [2022-02-15 11:41:32,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15920 to 9859. [2022-02-15 11:41:32,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9859 states, 9858 states have (on average 3.235138973422601) internal successors, (31892), 9858 states have internal predecessors, (31892), 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) [2022-02-15 11:41:32,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9859 states to 9859 states and 31892 transitions. [2022-02-15 11:41:32,493 INFO L78 Accepts]: Start accepts. Automaton has 9859 states and 31892 transitions. Word has length 168 [2022-02-15 11:41:32,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:41:32,494 INFO L470 AbstractCegarLoop]: Abstraction has 9859 states and 31892 transitions. [2022-02-15 11:41:32,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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) [2022-02-15 11:41:32,494 INFO L276 IsEmpty]: Start isEmpty. Operand 9859 states and 31892 transitions. [2022-02-15 11:41:32,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:41:32,510 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:41:32,511 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:41:32,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-02-15 11:41:32,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-02-15 11:41:32,720 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:41:32,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:41:32,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1811475671, now seen corresponding path program 42 times [2022-02-15 11:41:32,721 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:41:32,721 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810797289] [2022-02-15 11:41:32,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:41:32,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:41:32,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:41:33,248 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:41:33,249 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:41:33,249 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810797289] [2022-02-15 11:41:33,249 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810797289] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:41:33,249 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466733303] [2022-02-15 11:41:33,249 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 11:41:33,249 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:41:33,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:41:33,251 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:41:33,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-02-15 11:41:33,386 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-02-15 11:41:33,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:41:33,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 28 conjunts are in the unsatisfiable core [2022-02-15 11:41:33,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:41:33,784 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:41:33,784 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:41:33,810 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:41:33,810 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 11:41:33,810 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466733303] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:41:33,811 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 11:41:33,811 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [27] total 34 [2022-02-15 11:41:33,811 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036320495] [2022-02-15 11:41:33,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:41:33,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 11:41:33,811 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:41:33,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 11:41:33,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=1038, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 11:41:33,812 INFO L87 Difference]: Start difference. First operand 9859 states and 31892 transitions. Second operand has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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) [2022-02-15 11:41:34,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:41:34,279 INFO L93 Difference]: Finished difference Result 13634 states and 43624 transitions. [2022-02-15 11:41:34,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 11:41:34,279 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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 168 [2022-02-15 11:41:34,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:41:34,311 INFO L225 Difference]: With dead ends: 13634 [2022-02-15 11:41:34,311 INFO L226 Difference]: Without dead ends: 13580 [2022-02-15 11:41:34,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=135, Invalid=1757, Unknown=0, NotChecked=0, Total=1892 [2022-02-15 11:41:34,312 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 197 mSDsluCounter, 2369 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 2309 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 325 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 11:41:34,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 2309 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 626 Invalid, 0 Unknown, 325 Unchecked, 0.2s Time] [2022-02-15 11:41:34,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13580 states. [2022-02-15 11:41:34,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13580 to 10567. [2022-02-15 11:41:34,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10567 states, 10566 states have (on average 3.2314026121521864) internal successors, (34143), 10566 states have internal predecessors, (34143), 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) [2022-02-15 11:41:34,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10567 states to 10567 states and 34143 transitions. [2022-02-15 11:41:34,516 INFO L78 Accepts]: Start accepts. Automaton has 10567 states and 34143 transitions. Word has length 168 [2022-02-15 11:41:34,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:41:34,516 INFO L470 AbstractCegarLoop]: Abstraction has 10567 states and 34143 transitions. [2022-02-15 11:41:34,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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) [2022-02-15 11:41:34,516 INFO L276 IsEmpty]: Start isEmpty. Operand 10567 states and 34143 transitions. [2022-02-15 11:41:34,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:41:34,533 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:41:34,534 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:41:34,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2022-02-15 11:41:34,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-02-15 11:41:34,734 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:41:34,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:41:34,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1384341321, now seen corresponding path program 43 times [2022-02-15 11:41:34,735 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:41:34,735 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199176846] [2022-02-15 11:41:34,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:41:34,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:41:34,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:41:35,368 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:41:35,369 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:41:35,369 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199176846] [2022-02-15 11:41:35,369 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199176846] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:41:35,369 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240721664] [2022-02-15 11:41:35,369 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 11:41:35,369 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:41:35,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:41:35,372 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:41:35,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-02-15 11:41:35,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:41:35,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 54 conjunts are in the unsatisfiable core [2022-02-15 11:41:35,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:41:36,711 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:41:36,712 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 32 [2022-02-15 11:41:36,744 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:41:36,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:41:37,101 INFO L353 Elim1Store]: treesize reduction 14, result has 80.8 percent of original size [2022-02-15 11:41:37,101 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 80 treesize of output 90 [2022-02-15 11:41:37,609 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:41:37,609 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240721664] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-15 11:41:37,609 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-15 11:41:37,609 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [28, 26] total 60 [2022-02-15 11:41:37,609 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717122608] [2022-02-15 11:41:37,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:41:37,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 11:41:37,610 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:41:37,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 11:41:37,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=3286, Unknown=0, NotChecked=0, Total=3540 [2022-02-15 11:41:37,610 INFO L87 Difference]: Start difference. First operand 10567 states and 34143 transitions. Second operand has 18 states, 18 states have (on average 8.944444444444445) internal successors, (161), 18 states have internal predecessors, (161), 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) [2022-02-15 11:41:38,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:41:38,298 INFO L93 Difference]: Finished difference Result 13304 states and 42552 transitions. [2022-02-15 11:41:38,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 11:41:38,298 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.944444444444445) internal successors, (161), 18 states have internal predecessors, (161), 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 168 [2022-02-15 11:41:38,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:41:38,333 INFO L225 Difference]: With dead ends: 13304 [2022-02-15 11:41:38,333 INFO L226 Difference]: Without dead ends: 12410 [2022-02-15 11:41:38,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 304 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1349 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=353, Invalid=4339, Unknown=0, NotChecked=0, Total=4692 [2022-02-15 11:41:38,334 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 501 mSDsluCounter, 2101 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 2084 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 11:41:38,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [501 Valid, 2084 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 11:41:38,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12410 states. [2022-02-15 11:41:38,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12410 to 9973. [2022-02-15 11:41:38,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9973 states, 9972 states have (on average 3.2325511432009626) internal successors, (32235), 9972 states have internal predecessors, (32235), 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) [2022-02-15 11:41:38,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9973 states to 9973 states and 32235 transitions. [2022-02-15 11:41:38,517 INFO L78 Accepts]: Start accepts. Automaton has 9973 states and 32235 transitions. Word has length 168 [2022-02-15 11:41:38,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:41:38,517 INFO L470 AbstractCegarLoop]: Abstraction has 9973 states and 32235 transitions. [2022-02-15 11:41:38,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.944444444444445) internal successors, (161), 18 states have internal predecessors, (161), 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) [2022-02-15 11:41:38,517 INFO L276 IsEmpty]: Start isEmpty. Operand 9973 states and 32235 transitions. [2022-02-15 11:41:38,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:41:38,534 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:41:38,534 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:41:38,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-02-15 11:41:38,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-02-15 11:41:38,735 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:41:38,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:41:38,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1001763029, now seen corresponding path program 44 times [2022-02-15 11:41:38,735 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:41:38,736 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861995479] [2022-02-15 11:41:38,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:41:38,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:41:38,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:41:40,640 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:41:40,640 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:41:40,640 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861995479] [2022-02-15 11:41:40,640 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861995479] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:41:40,640 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160487160] [2022-02-15 11:41:40,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 11:41:40,640 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:41:40,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:41:40,641 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:41:40,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-02-15 11:41:40,771 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-02-15 11:41:40,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:41:40,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-15 11:41:40,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:41:41,432 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:41:41,433 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:41:41,464 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:41:41,465 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 11:41:41,465 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160487160] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:41:41,465 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 11:41:41,465 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [40] total 47 [2022-02-15 11:41:41,465 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969175517] [2022-02-15 11:41:41,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:41:41,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 11:41:41,465 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:41:41,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 11:41:41,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=2009, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 11:41:41,466 INFO L87 Difference]: Start difference. First operand 9973 states and 32235 transitions. Second operand has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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) [2022-02-15 11:41:41,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:41:41,870 INFO L93 Difference]: Finished difference Result 12341 states and 39799 transitions. [2022-02-15 11:41:41,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 11:41:41,871 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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 168 [2022-02-15 11:41:41,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:41:41,899 INFO L225 Difference]: With dead ends: 12341 [2022-02-15 11:41:41,899 INFO L226 Difference]: Without dead ends: 12209 [2022-02-15 11:41:41,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 168 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=199, Invalid=2881, Unknown=0, NotChecked=0, Total=3080 [2022-02-15 11:41:41,900 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 127 mSDsluCounter, 1815 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 1821 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 291 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 11:41:41,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 1821 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 388 Invalid, 0 Unknown, 291 Unchecked, 0.2s Time] [2022-02-15 11:41:41,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12209 states. [2022-02-15 11:41:42,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12209 to 10773. [2022-02-15 11:41:42,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10773 states, 10772 states have (on average 3.238860007426662) internal successors, (34889), 10772 states have internal predecessors, (34889), 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) [2022-02-15 11:41:42,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10773 states to 10773 states and 34889 transitions. [2022-02-15 11:41:42,109 INFO L78 Accepts]: Start accepts. Automaton has 10773 states and 34889 transitions. Word has length 168 [2022-02-15 11:41:42,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:41:42,109 INFO L470 AbstractCegarLoop]: Abstraction has 10773 states and 34889 transitions. [2022-02-15 11:41:42,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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) [2022-02-15 11:41:42,109 INFO L276 IsEmpty]: Start isEmpty. Operand 10773 states and 34889 transitions. [2022-02-15 11:41:42,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:41:42,127 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:41:42,127 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:41:42,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-02-15 11:41:42,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-02-15 11:41:42,328 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:41:42,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:41:42,328 INFO L85 PathProgramCache]: Analyzing trace with hash 349978539, now seen corresponding path program 45 times [2022-02-15 11:41:42,328 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:41:42,329 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567042121] [2022-02-15 11:41:42,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:41:42,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:41:42,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:41:42,924 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:41:42,924 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:41:42,924 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567042121] [2022-02-15 11:41:42,925 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567042121] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:41:42,925 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360080337] [2022-02-15 11:41:42,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 11:41:42,925 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:41:42,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:41:42,926 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:41:42,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-02-15 11:41:43,060 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-02-15 11:41:43,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:41:43,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-15 11:41:43,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:41:43,479 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:41:43,479 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:41:43,509 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:41:43,510 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 11:41:43,510 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360080337] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:41:43,510 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 11:41:43,510 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [27] total 34 [2022-02-15 11:41:43,510 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395462582] [2022-02-15 11:41:43,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:41:43,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 11:41:43,511 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:41:43,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 11:41:43,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1034, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 11:41:43,511 INFO L87 Difference]: Start difference. First operand 10773 states and 34889 transitions. Second operand has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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) [2022-02-15 11:41:43,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:41:43,859 INFO L93 Difference]: Finished difference Result 12667 states and 40766 transitions. [2022-02-15 11:41:43,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-15 11:41:43,860 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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 168 [2022-02-15 11:41:43,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:41:43,886 INFO L225 Difference]: With dead ends: 12667 [2022-02-15 11:41:43,886 INFO L226 Difference]: Without dead ends: 12169 [2022-02-15 11:41:43,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 162 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=1595, Unknown=0, NotChecked=0, Total=1722 [2022-02-15 11:41:43,887 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 187 mSDsluCounter, 1856 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 1819 SdHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 390 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 11:41:43,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 1819 Invalid, 799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 404 Invalid, 0 Unknown, 390 Unchecked, 0.2s Time] [2022-02-15 11:41:43,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12169 states. [2022-02-15 11:41:44,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12169 to 11033. [2022-02-15 11:41:44,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11033 states, 11032 states have (on average 3.2213560551124) internal successors, (35538), 11032 states have internal predecessors, (35538), 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) [2022-02-15 11:41:44,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11033 states to 11033 states and 35538 transitions. [2022-02-15 11:41:44,089 INFO L78 Accepts]: Start accepts. Automaton has 11033 states and 35538 transitions. Word has length 168 [2022-02-15 11:41:44,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:41:44,089 INFO L470 AbstractCegarLoop]: Abstraction has 11033 states and 35538 transitions. [2022-02-15 11:41:44,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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) [2022-02-15 11:41:44,089 INFO L276 IsEmpty]: Start isEmpty. Operand 11033 states and 35538 transitions. [2022-02-15 11:41:44,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:41:44,107 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:41:44,108 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:41:44,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-02-15 11:41:44,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:41:44,308 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:41:44,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:41:44,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1068484363, now seen corresponding path program 46 times [2022-02-15 11:41:44,309 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:41:44,309 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915456411] [2022-02-15 11:41:44,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:41:44,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:41:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:41:46,871 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:41:46,872 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:41:46,872 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915456411] [2022-02-15 11:41:46,872 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915456411] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:41:46,872 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180000514] [2022-02-15 11:41:46,872 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 11:41:46,872 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:41:46,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:41:46,874 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:41:46,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-02-15 11:41:47,009 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 11:41:47,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:41:47,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 54 conjunts are in the unsatisfiable core [2022-02-15 11:41:47,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:41:48,611 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:41:48,612 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 32 [2022-02-15 11:41:48,643 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:41:48,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:41:49,113 INFO L353 Elim1Store]: treesize reduction 14, result has 80.8 percent of original size [2022-02-15 11:41:49,113 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 80 treesize of output 90 [2022-02-15 11:41:49,718 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:41:49,719 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180000514] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-15 11:41:49,719 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-15 11:41:49,719 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [40, 26] total 74 [2022-02-15 11:41:49,719 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901149962] [2022-02-15 11:41:49,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:41:49,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 11:41:49,719 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:41:49,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 11:41:49,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=4963, Unknown=0, NotChecked=0, Total=5402 [2022-02-15 11:41:49,720 INFO L87 Difference]: Start difference. First operand 11033 states and 35538 transitions. Second operand has 18 states, 18 states have (on average 8.944444444444445) internal successors, (161), 18 states have internal predecessors, (161), 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) [2022-02-15 11:41:50,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:41:50,611 INFO L93 Difference]: Finished difference Result 12977 states and 41428 transitions. [2022-02-15 11:41:50,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 11:41:50,611 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.944444444444445) internal successors, (161), 18 states have internal predecessors, (161), 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 168 [2022-02-15 11:41:50,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:41:50,641 INFO L225 Difference]: With dead ends: 12977 [2022-02-15 11:41:50,641 INFO L226 Difference]: Without dead ends: 12353 [2022-02-15 11:41:50,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1794 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=553, Invalid=6419, Unknown=0, NotChecked=0, Total=6972 [2022-02-15 11:41:50,643 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 478 mSDsluCounter, 2015 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 1976 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 11:41:50,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 1976 Invalid, 1011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 11:41:50,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12353 states. [2022-02-15 11:41:50,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12353 to 11135. [2022-02-15 11:41:50,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11135 states, 11134 states have (on average 3.211514280582001) internal successors, (35757), 11134 states have internal predecessors, (35757), 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) [2022-02-15 11:41:50,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11135 states to 11135 states and 35757 transitions. [2022-02-15 11:41:50,908 INFO L78 Accepts]: Start accepts. Automaton has 11135 states and 35757 transitions. Word has length 168 [2022-02-15 11:41:50,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:41:50,908 INFO L470 AbstractCegarLoop]: Abstraction has 11135 states and 35757 transitions. [2022-02-15 11:41:50,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.944444444444445) internal successors, (161), 18 states have internal predecessors, (161), 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) [2022-02-15 11:41:50,909 INFO L276 IsEmpty]: Start isEmpty. Operand 11135 states and 35757 transitions. [2022-02-15 11:41:50,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:41:50,928 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:41:50,928 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:41:50,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-02-15 11:41:51,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-02-15 11:41:51,129 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:41:51,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:41:51,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1920596697, now seen corresponding path program 47 times [2022-02-15 11:41:51,131 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:41:51,131 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500448144] [2022-02-15 11:41:51,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:41:51,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:41:51,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:41:51,668 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:41:51,668 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:41:51,668 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500448144] [2022-02-15 11:41:51,668 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500448144] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:41:51,668 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598358211] [2022-02-15 11:41:51,668 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 11:41:51,669 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:41:51,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:41:51,670 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:41:51,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-02-15 11:41:51,809 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-15 11:41:51,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:41:51,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 32 conjunts are in the unsatisfiable core [2022-02-15 11:41:51,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:41:52,306 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:41:52,307 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:41:52,332 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-15 11:41:52,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:41:52,547 INFO L353 Elim1Store]: treesize reduction 14, result has 80.8 percent of original size [2022-02-15 11:41:52,547 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 78 [2022-02-15 11:41:52,798 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:41:52,798 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598358211] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-15 11:41:52,798 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-15 11:41:52,799 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [27, 15] total 44 [2022-02-15 11:41:52,799 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761214189] [2022-02-15 11:41:52,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:41:52,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 11:41:52,799 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:41:52,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 11:41:52,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1754, Unknown=0, NotChecked=0, Total=1892 [2022-02-15 11:41:52,800 INFO L87 Difference]: Start difference. First operand 11135 states and 35757 transitions. Second operand has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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) [2022-02-15 11:41:53,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:41:53,618 INFO L93 Difference]: Finished difference Result 17174 states and 55116 transitions. [2022-02-15 11:41:53,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-15 11:41:53,618 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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 168 [2022-02-15 11:41:53,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:41:53,658 INFO L225 Difference]: With dead ends: 17174 [2022-02-15 11:41:53,658 INFO L226 Difference]: Without dead ends: 16745 [2022-02-15 11:41:53,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 318 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=237, Invalid=2955, Unknown=0, NotChecked=0, Total=3192 [2022-02-15 11:41:53,659 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 451 mSDsluCounter, 2094 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 2069 SdHoareTripleChecker+Invalid, 1155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 11:41:53,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [451 Valid, 2069 Invalid, 1155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 11:41:53,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16745 states. [2022-02-15 11:41:53,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16745 to 11181. [2022-02-15 11:41:53,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11181 states, 11180 states have (on average 3.2105545617173523) internal successors, (35894), 11180 states have internal predecessors, (35894), 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) [2022-02-15 11:41:53,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11181 states to 11181 states and 35894 transitions. [2022-02-15 11:41:53,914 INFO L78 Accepts]: Start accepts. Automaton has 11181 states and 35894 transitions. Word has length 168 [2022-02-15 11:41:53,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:41:53,915 INFO L470 AbstractCegarLoop]: Abstraction has 11181 states and 35894 transitions. [2022-02-15 11:41:53,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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) [2022-02-15 11:41:53,915 INFO L276 IsEmpty]: Start isEmpty. Operand 11181 states and 35894 transitions. [2022-02-15 11:41:53,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:41:53,933 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:41:53,934 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:41:53,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-02-15 11:41:54,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-02-15 11:41:54,135 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:41:54,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:41:54,135 INFO L85 PathProgramCache]: Analyzing trace with hash -746562367, now seen corresponding path program 48 times [2022-02-15 11:41:54,136 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:41:54,136 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445902984] [2022-02-15 11:41:54,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:41:54,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:41:54,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:41:54,761 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:41:54,761 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:41:54,761 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445902984] [2022-02-15 11:41:54,761 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445902984] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:41:54,761 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373219521] [2022-02-15 11:41:54,761 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 11:41:54,761 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:41:54,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:41:54,763 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:41:54,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-02-15 11:41:54,902 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-02-15 11:41:54,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:41:54,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-15 11:41:54,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:41:55,437 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:41:55,437 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:41:55,456 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:41:55,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 11:41:55,456 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373219521] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:41:55,456 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 11:41:55,457 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [28] total 36 [2022-02-15 11:41:55,457 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851082992] [2022-02-15 11:41:55,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:41:55,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 11:41:55,457 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:41:55,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 11:41:55,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1167, Unknown=0, NotChecked=0, Total=1260 [2022-02-15 11:41:55,457 INFO L87 Difference]: Start difference. First operand 11181 states and 35894 transitions. Second operand has 13 states, 13 states have (on average 12.384615384615385) internal successors, (161), 13 states have internal predecessors, (161), 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) [2022-02-15 11:41:55,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:41:55,881 INFO L93 Difference]: Finished difference Result 12897 states and 41374 transitions. [2022-02-15 11:41:55,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-15 11:41:55,881 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 12.384615384615385) internal successors, (161), 13 states have internal predecessors, (161), 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 168 [2022-02-15 11:41:55,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:41:55,910 INFO L225 Difference]: With dead ends: 12897 [2022-02-15 11:41:55,910 INFO L226 Difference]: Without dead ends: 12789 [2022-02-15 11:41:55,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=166, Invalid=2090, Unknown=0, NotChecked=0, Total=2256 [2022-02-15 11:41:55,911 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 181 mSDsluCounter, 1994 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 1964 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 552 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 11:41:55,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 1964 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 399 Invalid, 0 Unknown, 552 Unchecked, 0.1s Time] [2022-02-15 11:41:55,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12789 states. [2022-02-15 11:41:56,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12789 to 11217. [2022-02-15 11:41:56,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11217 states, 11216 states have (on average 3.2113944365192584) internal successors, (36019), 11216 states have internal predecessors, (36019), 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) [2022-02-15 11:41:56,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11217 states to 11217 states and 36019 transitions. [2022-02-15 11:41:56,091 INFO L78 Accepts]: Start accepts. Automaton has 11217 states and 36019 transitions. Word has length 168 [2022-02-15 11:41:56,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:41:56,091 INFO L470 AbstractCegarLoop]: Abstraction has 11217 states and 36019 transitions. [2022-02-15 11:41:56,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.384615384615385) internal successors, (161), 13 states have internal predecessors, (161), 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) [2022-02-15 11:41:56,092 INFO L276 IsEmpty]: Start isEmpty. Operand 11217 states and 36019 transitions. [2022-02-15 11:41:56,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:41:56,110 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:41:56,110 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:41:56,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-02-15 11:41:56,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-02-15 11:41:56,311 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:41:56,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:41:56,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1026641317, now seen corresponding path program 49 times [2022-02-15 11:41:56,312 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:41:56,312 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352522860] [2022-02-15 11:41:56,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:41:56,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:41:56,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:41:56,882 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:41:56,883 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:41:56,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352522860] [2022-02-15 11:41:56,883 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352522860] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:41:56,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909027796] [2022-02-15 11:41:56,883 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 11:41:56,883 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:41:56,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:41:56,884 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:41:56,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-02-15 11:41:57,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:41:57,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 57 conjunts are in the unsatisfiable core [2022-02-15 11:41:57,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:41:58,364 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:41:58,364 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 32 [2022-02-15 11:41:58,460 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:41:58,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:41:58,948 INFO L353 Elim1Store]: treesize reduction 14, result has 80.8 percent of original size [2022-02-15 11:41:58,948 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 96 [2022-02-15 11:41:59,471 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:41:59,472 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909027796] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-15 11:41:59,472 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-15 11:41:59,472 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [27, 26] total 61 [2022-02-15 11:41:59,472 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114299207] [2022-02-15 11:41:59,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:41:59,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-15 11:41:59,472 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:41:59,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-15 11:41:59,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=3332, Unknown=0, NotChecked=0, Total=3660 [2022-02-15 11:41:59,473 INFO L87 Difference]: Start difference. First operand 11217 states and 36019 transitions. Second operand has 19 states, 19 states have (on average 8.473684210526315) internal successors, (161), 19 states have internal predecessors, (161), 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) [2022-02-15 11:42:00,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:42:00,637 INFO L93 Difference]: Finished difference Result 13209 states and 42065 transitions. [2022-02-15 11:42:00,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-15 11:42:00,637 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 8.473684210526315) internal successors, (161), 19 states have internal predecessors, (161), 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 168 [2022-02-15 11:42:00,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:42:00,666 INFO L225 Difference]: With dead ends: 13209 [2022-02-15 11:42:00,667 INFO L226 Difference]: Without dead ends: 12887 [2022-02-15 11:42:00,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 302 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1647 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=467, Invalid=4789, Unknown=0, NotChecked=0, Total=5256 [2022-02-15 11:42:00,667 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 669 mSDsluCounter, 2405 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 2363 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 11:42:00,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [669 Valid, 2363 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 11:42:00,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12887 states. [2022-02-15 11:42:00,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12887 to 11262. [2022-02-15 11:42:00,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11262 states, 11261 states have (on average 3.20717520646479) internal successors, (36116), 11261 states have internal predecessors, (36116), 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) [2022-02-15 11:42:00,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11262 states to 11262 states and 36116 transitions. [2022-02-15 11:42:00,861 INFO L78 Accepts]: Start accepts. Automaton has 11262 states and 36116 transitions. Word has length 168 [2022-02-15 11:42:00,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:42:00,861 INFO L470 AbstractCegarLoop]: Abstraction has 11262 states and 36116 transitions. [2022-02-15 11:42:00,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.473684210526315) internal successors, (161), 19 states have internal predecessors, (161), 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) [2022-02-15 11:42:00,861 INFO L276 IsEmpty]: Start isEmpty. Operand 11262 states and 36116 transitions. [2022-02-15 11:42:00,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:42:00,880 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:42:00,880 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:42:00,903 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2022-02-15 11:42:01,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:42:01,098 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:42:01,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:42:01,099 INFO L85 PathProgramCache]: Analyzing trace with hash -631882217, now seen corresponding path program 50 times [2022-02-15 11:42:01,099 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:42:01,099 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002389785] [2022-02-15 11:42:01,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:42:01,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:42:01,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:42:01,237 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:42:01,238 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:42:01,238 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002389785] [2022-02-15 11:42:01,238 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002389785] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:42:01,238 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 11:42:01,238 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-15 11:42:01,238 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537000887] [2022-02-15 11:42:01,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:42:01,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 11:42:01,239 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:42:01,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 11:42:01,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-02-15 11:42:01,240 INFO L87 Difference]: Start difference. First operand 11262 states and 36116 transitions. Second operand has 11 states, 11 states have (on average 14.636363636363637) internal successors, (161), 11 states have internal predecessors, (161), 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) [2022-02-15 11:42:01,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:42:01,673 INFO L93 Difference]: Finished difference Result 14610 states and 46380 transitions. [2022-02-15 11:42:01,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 11:42:01,673 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.636363636363637) internal successors, (161), 11 states have internal predecessors, (161), 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 168 [2022-02-15 11:42:01,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:42:01,702 INFO L225 Difference]: With dead ends: 14610 [2022-02-15 11:42:01,702 INFO L226 Difference]: Without dead ends: 12513 [2022-02-15 11:42:01,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2022-02-15 11:42:01,703 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 362 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 1693 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 11:42:01,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 1693 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 11:42:01,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12513 states. [2022-02-15 11:42:01,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12513 to 10565. [2022-02-15 11:42:01,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10565 states, 10564 states have (on average 3.1907421431276033) internal successors, (33707), 10564 states have internal predecessors, (33707), 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) [2022-02-15 11:42:01,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10565 states to 10565 states and 33707 transitions. [2022-02-15 11:42:01,905 INFO L78 Accepts]: Start accepts. Automaton has 10565 states and 33707 transitions. Word has length 168 [2022-02-15 11:42:01,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:42:01,906 INFO L470 AbstractCegarLoop]: Abstraction has 10565 states and 33707 transitions. [2022-02-15 11:42:01,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.636363636363637) internal successors, (161), 11 states have internal predecessors, (161), 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) [2022-02-15 11:42:01,906 INFO L276 IsEmpty]: Start isEmpty. Operand 10565 states and 33707 transitions. [2022-02-15 11:42:01,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:42:01,924 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:42:01,924 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:42:01,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-02-15 11:42:01,925 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:42:01,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:42:01,925 INFO L85 PathProgramCache]: Analyzing trace with hash 275740471, now seen corresponding path program 51 times [2022-02-15 11:42:01,925 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:42:01,925 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355748749] [2022-02-15 11:42:01,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:42:01,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:42:01,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:42:02,584 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:42:02,585 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:42:02,585 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355748749] [2022-02-15 11:42:02,585 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355748749] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:42:02,585 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035369383] [2022-02-15 11:42:02,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 11:42:02,585 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:42:02,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:42:02,588 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:42:02,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-02-15 11:42:02,758 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-02-15 11:42:02,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:42:02,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-15 11:42:02,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:42:03,182 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:42:03,183 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:42:03,210 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:42:03,211 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 11:42:03,211 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035369383] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:42:03,211 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 11:42:03,211 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [27] total 34 [2022-02-15 11:42:03,211 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467808721] [2022-02-15 11:42:03,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:42:03,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 11:42:03,211 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:42:03,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 11:42:03,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1034, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 11:42:03,212 INFO L87 Difference]: Start difference. First operand 10565 states and 33707 transitions. Second operand has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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) [2022-02-15 11:42:03,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:42:03,564 INFO L93 Difference]: Finished difference Result 12201 states and 38699 transitions. [2022-02-15 11:42:03,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 11:42:03,565 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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 168 [2022-02-15 11:42:03,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:42:03,591 INFO L225 Difference]: With dead ends: 12201 [2022-02-15 11:42:03,591 INFO L226 Difference]: Without dead ends: 12150 [2022-02-15 11:42:03,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=128, Invalid=1594, Unknown=0, NotChecked=0, Total=1722 [2022-02-15 11:42:03,592 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 119 mSDsluCounter, 1915 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 1910 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 313 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 11:42:03,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 1910 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 378 Invalid, 0 Unknown, 313 Unchecked, 0.2s Time] [2022-02-15 11:42:03,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12150 states. [2022-02-15 11:42:03,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12150 to 10895. [2022-02-15 11:42:03,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10895 states, 10894 states have (on average 3.1736735817881403) internal successors, (34574), 10894 states have internal predecessors, (34574), 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) [2022-02-15 11:42:03,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10895 states to 10895 states and 34574 transitions. [2022-02-15 11:42:03,853 INFO L78 Accepts]: Start accepts. Automaton has 10895 states and 34574 transitions. Word has length 168 [2022-02-15 11:42:03,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:42:03,853 INFO L470 AbstractCegarLoop]: Abstraction has 10895 states and 34574 transitions. [2022-02-15 11:42:03,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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) [2022-02-15 11:42:03,853 INFO L276 IsEmpty]: Start isEmpty. Operand 10895 states and 34574 transitions. [2022-02-15 11:42:03,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:42:03,871 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:42:03,871 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:42:03,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-02-15 11:42:04,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:42:04,072 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:42:04,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:42:04,073 INFO L85 PathProgramCache]: Analyzing trace with hash 702874821, now seen corresponding path program 52 times [2022-02-15 11:42:04,073 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:42:04,073 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841407275] [2022-02-15 11:42:04,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:42:04,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:42:04,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:42:05,513 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:42:05,514 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:42:05,514 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841407275] [2022-02-15 11:42:05,514 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841407275] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:42:05,514 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875444615] [2022-02-15 11:42:05,514 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 11:42:05,514 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:42:05,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:42:05,515 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:42:05,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-02-15 11:42:05,651 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 11:42:05,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:42:05,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-15 11:42:05,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:42:06,899 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:42:06,900 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 28 [2022-02-15 11:42:06,928 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:42:06,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:42:07,309 INFO L353 Elim1Store]: treesize reduction 14, result has 80.8 percent of original size [2022-02-15 11:42:07,309 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 80 treesize of output 90 [2022-02-15 11:42:07,697 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:42:07,697 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875444615] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-15 11:42:07,697 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-15 11:42:07,697 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [36, 28] total 69 [2022-02-15 11:42:07,697 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812431122] [2022-02-15 11:42:07,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:42:07,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-15 11:42:07,698 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:42:07,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-15 11:42:07,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=376, Invalid=4316, Unknown=0, NotChecked=0, Total=4692 [2022-02-15 11:42:07,699 INFO L87 Difference]: Start difference. First operand 10895 states and 34574 transitions. Second operand has 15 states, 15 states have (on average 10.733333333333333) internal successors, (161), 15 states have internal predecessors, (161), 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) [2022-02-15 11:42:08,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:42:08,539 INFO L93 Difference]: Finished difference Result 13086 states and 41144 transitions. [2022-02-15 11:42:08,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 11:42:08,539 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 10.733333333333333) internal successors, (161), 15 states have internal predecessors, (161), 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 168 [2022-02-15 11:42:08,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:42:08,564 INFO L225 Difference]: With dead ends: 13086 [2022-02-15 11:42:08,564 INFO L226 Difference]: Without dead ends: 12203 [2022-02-15 11:42:08,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1969 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=474, Invalid=5688, Unknown=0, NotChecked=0, Total=6162 [2022-02-15 11:42:08,565 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 439 mSDsluCounter, 1991 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 1950 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 11:42:08,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [439 Valid, 1950 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 11:42:08,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12203 states. [2022-02-15 11:42:08,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12203 to 10955. [2022-02-15 11:42:08,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10955 states, 10954 states have (on average 3.16870549570933) internal successors, (34710), 10954 states have internal predecessors, (34710), 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) [2022-02-15 11:42:08,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10955 states to 10955 states and 34710 transitions. [2022-02-15 11:42:08,732 INFO L78 Accepts]: Start accepts. Automaton has 10955 states and 34710 transitions. Word has length 168 [2022-02-15 11:42:08,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:42:08,732 INFO L470 AbstractCegarLoop]: Abstraction has 10955 states and 34710 transitions. [2022-02-15 11:42:08,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.733333333333333) internal successors, (161), 15 states have internal predecessors, (161), 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) [2022-02-15 11:42:08,732 INFO L276 IsEmpty]: Start isEmpty. Operand 10955 states and 34710 transitions. [2022-02-15 11:42:08,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:42:08,748 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:42:08,749 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:42:08,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-02-15 11:42:08,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:42:08,949 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:42:08,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:42:08,950 INFO L85 PathProgramCache]: Analyzing trace with hash 255987073, now seen corresponding path program 53 times [2022-02-15 11:42:08,950 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:42:08,950 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25561910] [2022-02-15 11:42:08,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:42:08,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:42:08,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:42:09,601 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:42:09,601 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:42:09,602 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25561910] [2022-02-15 11:42:09,602 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25561910] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:42:09,602 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693676237] [2022-02-15 11:42:09,602 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 11:42:09,602 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:42:09,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:42:09,603 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:42:09,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-02-15 11:42:09,746 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-15 11:42:09,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:42:09,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 32 conjunts are in the unsatisfiable core [2022-02-15 11:42:09,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:42:10,219 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:42:10,219 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:42:10,244 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-15 11:42:10,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:42:10,430 INFO L353 Elim1Store]: treesize reduction 14, result has 80.8 percent of original size [2022-02-15 11:42:10,431 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 78 [2022-02-15 11:42:10,677 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:42:10,677 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693676237] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-15 11:42:10,677 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-15 11:42:10,677 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [27, 15] total 43 [2022-02-15 11:42:10,677 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699267296] [2022-02-15 11:42:10,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:42:10,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 11:42:10,678 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:42:10,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 11:42:10,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1676, Unknown=0, NotChecked=0, Total=1806 [2022-02-15 11:42:10,679 INFO L87 Difference]: Start difference. First operand 10955 states and 34710 transitions. Second operand has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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) [2022-02-15 11:42:11,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:42:11,310 INFO L93 Difference]: Finished difference Result 14775 states and 46807 transitions. [2022-02-15 11:42:11,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 11:42:11,310 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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 168 [2022-02-15 11:42:11,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:42:11,340 INFO L225 Difference]: With dead ends: 14775 [2022-02-15 11:42:11,340 INFO L226 Difference]: Without dead ends: 13306 [2022-02-15 11:42:11,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 320 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=212, Invalid=2544, Unknown=0, NotChecked=0, Total=2756 [2022-02-15 11:42:11,341 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 355 mSDsluCounter, 2046 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 2033 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 11:42:11,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [355 Valid, 2033 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 11:42:11,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13306 states. [2022-02-15 11:42:11,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13306 to 9645. [2022-02-15 11:42:11,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9645 states, 9644 states have (on average 3.203753629199502) internal successors, (30897), 9644 states have internal predecessors, (30897), 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) [2022-02-15 11:42:11,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9645 states to 9645 states and 30897 transitions. [2022-02-15 11:42:11,519 INFO L78 Accepts]: Start accepts. Automaton has 9645 states and 30897 transitions. Word has length 168 [2022-02-15 11:42:11,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:42:11,519 INFO L470 AbstractCegarLoop]: Abstraction has 9645 states and 30897 transitions. [2022-02-15 11:42:11,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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) [2022-02-15 11:42:11,519 INFO L276 IsEmpty]: Start isEmpty. Operand 9645 states and 30897 transitions. [2022-02-15 11:42:11,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:42:11,533 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:42:11,534 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:42:11,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-02-15 11:42:11,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2022-02-15 11:42:11,734 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:42:11,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:42:11,735 INFO L85 PathProgramCache]: Analyzing trace with hash -386302201, now seen corresponding path program 54 times [2022-02-15 11:42:11,735 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:42:11,735 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862692061] [2022-02-15 11:42:11,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:42:11,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:42:11,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:42:12,559 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:42:12,559 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:42:12,559 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862692061] [2022-02-15 11:42:12,559 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862692061] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:42:12,559 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85367006] [2022-02-15 11:42:12,559 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 11:42:12,559 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:42:12,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:42:12,560 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:42:12,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-02-15 11:42:12,704 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-02-15 11:42:12,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:42:12,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-15 11:42:12,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:42:13,117 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:42:13,117 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:42:13,142 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:42:13,142 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 11:42:13,142 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85367006] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:42:13,142 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 11:42:13,142 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [31] total 38 [2022-02-15 11:42:13,142 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946245247] [2022-02-15 11:42:13,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:42:13,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 11:42:13,143 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:42:13,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 11:42:13,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1305, Unknown=0, NotChecked=0, Total=1406 [2022-02-15 11:42:13,143 INFO L87 Difference]: Start difference. First operand 9645 states and 30897 transitions. Second operand has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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) [2022-02-15 11:42:13,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:42:13,592 INFO L93 Difference]: Finished difference Result 12598 states and 40190 transitions. [2022-02-15 11:42:13,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-15 11:42:13,592 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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 168 [2022-02-15 11:42:13,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:42:13,619 INFO L225 Difference]: With dead ends: 12598 [2022-02-15 11:42:13,619 INFO L226 Difference]: Without dead ends: 12349 [2022-02-15 11:42:13,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=155, Invalid=2197, Unknown=0, NotChecked=0, Total=2352 [2022-02-15 11:42:13,620 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 159 mSDsluCounter, 2202 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 2186 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 220 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 11:42:13,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 2186 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 565 Invalid, 0 Unknown, 220 Unchecked, 0.2s Time] [2022-02-15 11:42:13,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12349 states. [2022-02-15 11:42:13,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12349 to 10165. [2022-02-15 11:42:13,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10165 states, 10164 states have (on average 3.196871310507674) internal successors, (32493), 10164 states have internal predecessors, (32493), 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) [2022-02-15 11:42:13,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10165 states to 10165 states and 32493 transitions. [2022-02-15 11:42:13,793 INFO L78 Accepts]: Start accepts. Automaton has 10165 states and 32493 transitions. Word has length 168 [2022-02-15 11:42:13,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:42:13,793 INFO L470 AbstractCegarLoop]: Abstraction has 10165 states and 32493 transitions. [2022-02-15 11:42:13,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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) [2022-02-15 11:42:13,794 INFO L276 IsEmpty]: Start isEmpty. Operand 10165 states and 32493 transitions. [2022-02-15 11:42:13,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:42:13,809 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:42:13,809 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:42:13,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-02-15 11:42:14,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-02-15 11:42:14,010 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:42:14,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:42:14,011 INFO L85 PathProgramCache]: Analyzing trace with hash 39105113, now seen corresponding path program 55 times [2022-02-15 11:42:14,011 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:42:14,011 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097720551] [2022-02-15 11:42:14,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:42:14,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:42:14,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:42:14,560 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:42:14,560 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:42:14,560 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097720551] [2022-02-15 11:42:14,560 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097720551] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:42:14,560 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911932634] [2022-02-15 11:42:14,561 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 11:42:14,561 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:42:14,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:42:14,562 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:42:14,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-02-15 11:42:14,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:42:14,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 54 conjunts are in the unsatisfiable core [2022-02-15 11:42:14,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:42:15,871 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:42:15,871 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 32 [2022-02-15 11:42:15,921 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:42:15,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:42:16,278 INFO L353 Elim1Store]: treesize reduction 14, result has 80.8 percent of original size [2022-02-15 11:42:16,278 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 80 treesize of output 90 [2022-02-15 11:42:16,777 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:42:16,777 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911932634] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-15 11:42:16,777 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-15 11:42:16,777 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [28, 26] total 60 [2022-02-15 11:42:16,777 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495189454] [2022-02-15 11:42:16,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:42:16,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 11:42:16,778 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:42:16,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 11:42:16,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=3268, Unknown=0, NotChecked=0, Total=3540 [2022-02-15 11:42:16,779 INFO L87 Difference]: Start difference. First operand 10165 states and 32493 transitions. Second operand has 18 states, 18 states have (on average 8.944444444444445) internal successors, (161), 18 states have internal predecessors, (161), 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) [2022-02-15 11:42:17,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:42:17,636 INFO L93 Difference]: Finished difference Result 12716 states and 40305 transitions. [2022-02-15 11:42:17,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 11:42:17,636 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.944444444444445) internal successors, (161), 18 states have internal predecessors, (161), 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 168 [2022-02-15 11:42:17,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:42:17,661 INFO L225 Difference]: With dead ends: 12716 [2022-02-15 11:42:17,661 INFO L226 Difference]: Without dead ends: 11540 [2022-02-15 11:42:17,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1484 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=374, Invalid=4456, Unknown=0, NotChecked=0, Total=4830 [2022-02-15 11:42:17,662 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 485 mSDsluCounter, 2097 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 2064 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 11:42:17,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [485 Valid, 2064 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 11:42:17,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11540 states. [2022-02-15 11:42:17,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11540 to 9605. [2022-02-15 11:42:17,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9605 states, 9604 states have (on average 3.204810495626822) internal successors, (30779), 9604 states have internal predecessors, (30779), 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) [2022-02-15 11:42:17,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9605 states to 9605 states and 30779 transitions. [2022-02-15 11:42:17,827 INFO L78 Accepts]: Start accepts. Automaton has 9605 states and 30779 transitions. Word has length 168 [2022-02-15 11:42:17,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:42:17,827 INFO L470 AbstractCegarLoop]: Abstraction has 9605 states and 30779 transitions. [2022-02-15 11:42:17,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.944444444444445) internal successors, (161), 18 states have internal predecessors, (161), 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) [2022-02-15 11:42:17,828 INFO L276 IsEmpty]: Start isEmpty. Operand 9605 states and 30779 transitions. [2022-02-15 11:42:17,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:42:17,843 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:42:17,843 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:42:17,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-02-15 11:42:18,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2022-02-15 11:42:18,044 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:42:18,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:42:18,044 INFO L85 PathProgramCache]: Analyzing trace with hash 28584973, now seen corresponding path program 56 times [2022-02-15 11:42:18,044 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:42:18,044 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420099423] [2022-02-15 11:42:18,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:42:18,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:42:18,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:42:18,579 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:42:18,580 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:42:18,580 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420099423] [2022-02-15 11:42:18,580 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420099423] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:42:18,580 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089989638] [2022-02-15 11:42:18,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 11:42:18,580 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:42:18,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:42:18,582 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:42:18,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-02-15 11:42:18,727 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-02-15 11:42:18,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:42:18,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-15 11:42:18,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:42:19,145 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:42:19,145 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:42:19,171 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:42:19,171 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 11:42:19,171 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089989638] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:42:19,171 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 11:42:19,172 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [28] total 35 [2022-02-15 11:42:19,172 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362651020] [2022-02-15 11:42:19,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:42:19,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 11:42:19,172 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:42:19,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 11:42:19,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1103, Unknown=0, NotChecked=0, Total=1190 [2022-02-15 11:42:19,173 INFO L87 Difference]: Start difference. First operand 9605 states and 30779 transitions. Second operand has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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) [2022-02-15 11:42:19,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:42:19,599 INFO L93 Difference]: Finished difference Result 13138 states and 41926 transitions. [2022-02-15 11:42:19,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 11:42:19,599 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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 168 [2022-02-15 11:42:19,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:42:19,628 INFO L225 Difference]: With dead ends: 13138 [2022-02-15 11:42:19,628 INFO L226 Difference]: Without dead ends: 12817 [2022-02-15 11:42:19,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=129, Invalid=1763, Unknown=0, NotChecked=0, Total=1892 [2022-02-15 11:42:19,629 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 148 mSDsluCounter, 2147 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 2149 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 175 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 11:42:19,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 2149 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 577 Invalid, 0 Unknown, 175 Unchecked, 0.2s Time] [2022-02-15 11:42:19,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12817 states. [2022-02-15 11:42:19,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12817 to 10081. [2022-02-15 11:42:19,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10081 states, 10080 states have (on average 3.2041666666666666) internal successors, (32298), 10080 states have internal predecessors, (32298), 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) [2022-02-15 11:42:19,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10081 states to 10081 states and 32298 transitions. [2022-02-15 11:42:19,818 INFO L78 Accepts]: Start accepts. Automaton has 10081 states and 32298 transitions. Word has length 168 [2022-02-15 11:42:19,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:42:19,818 INFO L470 AbstractCegarLoop]: Abstraction has 10081 states and 32298 transitions. [2022-02-15 11:42:19,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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) [2022-02-15 11:42:19,819 INFO L276 IsEmpty]: Start isEmpty. Operand 10081 states and 32298 transitions. [2022-02-15 11:42:19,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:42:19,834 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:42:19,834 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:42:19,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-02-15 11:42:20,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2022-02-15 11:42:20,035 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:42:20,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:42:20,036 INFO L85 PathProgramCache]: Analyzing trace with hash 37570611, now seen corresponding path program 57 times [2022-02-15 11:42:20,036 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:42:20,036 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858912677] [2022-02-15 11:42:20,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:42:20,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:42:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:42:21,237 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:42:21,237 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:42:21,238 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858912677] [2022-02-15 11:42:21,238 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858912677] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:42:21,238 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617039910] [2022-02-15 11:42:21,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 11:42:21,238 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:42:21,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:42:21,239 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:42:21,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-02-15 11:42:21,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-02-15 11:42:21,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:42:21,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-15 11:42:21,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:42:21,854 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:42:21,855 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:42:21,880 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:42:21,880 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 11:42:21,880 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617039910] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:42:21,880 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 11:42:21,880 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [34] total 41 [2022-02-15 11:42:21,880 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058746074] [2022-02-15 11:42:21,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:42:21,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 11:42:21,881 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:42:21,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 11:42:21,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1520, Unknown=0, NotChecked=0, Total=1640 [2022-02-15 11:42:21,881 INFO L87 Difference]: Start difference. First operand 10081 states and 32298 transitions. Second operand has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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) [2022-02-15 11:42:22,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:42:22,496 INFO L93 Difference]: Finished difference Result 13274 states and 41987 transitions. [2022-02-15 11:42:22,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 11:42:22,496 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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 168 [2022-02-15 11:42:22,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:42:22,531 INFO L225 Difference]: With dead ends: 13274 [2022-02-15 11:42:22,531 INFO L226 Difference]: Without dead ends: 12890 [2022-02-15 11:42:22,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 615 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=185, Invalid=2467, Unknown=0, NotChecked=0, Total=2652 [2022-02-15 11:42:22,532 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 215 mSDsluCounter, 2184 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 2115 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 330 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 11:42:22,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 2115 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 687 Invalid, 0 Unknown, 330 Unchecked, 0.3s Time] [2022-02-15 11:42:22,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12890 states. [2022-02-15 11:42:22,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12890 to 10881. [2022-02-15 11:42:22,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10881 states, 10880 states have (on average 3.1915441176470587) internal successors, (34724), 10880 states have internal predecessors, (34724), 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) [2022-02-15 11:42:22,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10881 states to 10881 states and 34724 transitions. [2022-02-15 11:42:22,767 INFO L78 Accepts]: Start accepts. Automaton has 10881 states and 34724 transitions. Word has length 168 [2022-02-15 11:42:22,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:42:22,767 INFO L470 AbstractCegarLoop]: Abstraction has 10881 states and 34724 transitions. [2022-02-15 11:42:22,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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) [2022-02-15 11:42:22,768 INFO L276 IsEmpty]: Start isEmpty. Operand 10881 states and 34724 transitions. [2022-02-15 11:42:22,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:42:22,791 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:42:22,791 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:42:22,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-02-15 11:42:23,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-02-15 11:42:23,008 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:42:23,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:42:23,008 INFO L85 PathProgramCache]: Analyzing trace with hash 187694975, now seen corresponding path program 58 times [2022-02-15 11:42:23,008 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:42:23,008 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79663180] [2022-02-15 11:42:23,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:42:23,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:42:23,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:42:23,598 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:42:23,598 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:42:23,598 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79663180] [2022-02-15 11:42:23,598 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79663180] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:42:23,598 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658232847] [2022-02-15 11:42:23,598 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 11:42:23,599 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:42:23,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:42:23,600 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:42:23,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-02-15 11:42:23,784 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 11:42:23,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:42:23,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 47 conjunts are in the unsatisfiable core [2022-02-15 11:42:23,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:42:24,914 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:42:24,914 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 32 [2022-02-15 11:42:24,949 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:42:24,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:42:25,222 INFO L353 Elim1Store]: treesize reduction 14, result has 80.8 percent of original size [2022-02-15 11:42:25,222 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 84 [2022-02-15 11:42:25,698 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:42:25,699 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658232847] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-15 11:42:25,699 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-15 11:42:25,699 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [27, 25] total 57 [2022-02-15 11:42:25,699 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079220356] [2022-02-15 11:42:25,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:42:25,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 11:42:25,699 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:42:25,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 11:42:25,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=2946, Unknown=0, NotChecked=0, Total=3192 [2022-02-15 11:42:25,700 INFO L87 Difference]: Start difference. First operand 10881 states and 34724 transitions. Second operand has 17 states, 17 states have (on average 9.470588235294118) internal successors, (161), 17 states have internal predecessors, (161), 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) [2022-02-15 11:42:26,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:42:26,420 INFO L93 Difference]: Finished difference Result 12369 states and 39115 transitions. [2022-02-15 11:42:26,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-15 11:42:26,421 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 9.470588235294118) internal successors, (161), 17 states have internal predecessors, (161), 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 168 [2022-02-15 11:42:26,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:42:26,457 INFO L225 Difference]: With dead ends: 12369 [2022-02-15 11:42:26,457 INFO L226 Difference]: Without dead ends: 11262 [2022-02-15 11:42:26,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1213 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=330, Invalid=3830, Unknown=0, NotChecked=0, Total=4160 [2022-02-15 11:42:26,458 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 410 mSDsluCounter, 2368 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 2267 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 11:42:26,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [410 Valid, 2267 Invalid, 1080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 11:42:26,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11262 states. [2022-02-15 11:42:26,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11262 to 9913. [2022-02-15 11:42:26,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9913 states, 9912 states have (on average 3.1894673123486683) internal successors, (31614), 9912 states have internal predecessors, (31614), 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) [2022-02-15 11:42:26,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9913 states to 9913 states and 31614 transitions. [2022-02-15 11:42:26,643 INFO L78 Accepts]: Start accepts. Automaton has 9913 states and 31614 transitions. Word has length 168 [2022-02-15 11:42:26,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:42:26,643 INFO L470 AbstractCegarLoop]: Abstraction has 9913 states and 31614 transitions. [2022-02-15 11:42:26,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 9.470588235294118) internal successors, (161), 17 states have internal predecessors, (161), 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) [2022-02-15 11:42:26,643 INFO L276 IsEmpty]: Start isEmpty. Operand 9913 states and 31614 transitions. [2022-02-15 11:42:26,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:42:26,660 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:42:26,661 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:42:26,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-02-15 11:42:26,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-02-15 11:42:26,861 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:42:26,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:42:26,862 INFO L85 PathProgramCache]: Analyzing trace with hash -976138449, now seen corresponding path program 59 times [2022-02-15 11:42:26,862 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:42:26,862 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285571426] [2022-02-15 11:42:26,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:42:26,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:42:26,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:42:27,391 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:42:27,391 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:42:27,391 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285571426] [2022-02-15 11:42:27,391 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285571426] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:42:27,391 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297840487] [2022-02-15 11:42:27,391 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 11:42:27,392 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:42:27,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:42:27,396 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:42:27,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-02-15 11:42:27,552 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-15 11:42:27,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:42:27,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 32 conjunts are in the unsatisfiable core [2022-02-15 11:42:27,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:42:28,034 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:42:28,034 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:42:28,060 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-15 11:42:28,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:42:28,204 INFO L353 Elim1Store]: treesize reduction 14, result has 80.8 percent of original size [2022-02-15 11:42:28,205 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 78 [2022-02-15 11:42:28,464 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:42:28,465 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297840487] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-15 11:42:28,465 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-15 11:42:28,465 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [27, 15] total 41 [2022-02-15 11:42:28,465 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580338181] [2022-02-15 11:42:28,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:42:28,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 11:42:28,465 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:42:28,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 11:42:28,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1525, Unknown=0, NotChecked=0, Total=1640 [2022-02-15 11:42:28,466 INFO L87 Difference]: Start difference. First operand 9913 states and 31614 transitions. Second operand has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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) [2022-02-15 11:42:29,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:42:29,006 INFO L93 Difference]: Finished difference Result 13513 states and 42772 transitions. [2022-02-15 11:42:29,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 11:42:29,006 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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 168 [2022-02-15 11:42:29,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:42:29,033 INFO L225 Difference]: With dead ends: 13513 [2022-02-15 11:42:29,033 INFO L226 Difference]: Without dead ends: 12103 [2022-02-15 11:42:29,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 322 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=183, Invalid=2267, Unknown=0, NotChecked=0, Total=2450 [2022-02-15 11:42:29,034 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 392 mSDsluCounter, 1473 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 1519 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 11:42:29,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [392 Valid, 1519 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 11:42:29,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12103 states. [2022-02-15 11:42:29,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12103 to 9331. [2022-02-15 11:42:29,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9331 states, 9330 states have (on average 3.1937834941050376) internal successors, (29798), 9330 states have internal predecessors, (29798), 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) [2022-02-15 11:42:29,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9331 states to 9331 states and 29798 transitions. [2022-02-15 11:42:29,227 INFO L78 Accepts]: Start accepts. Automaton has 9331 states and 29798 transitions. Word has length 168 [2022-02-15 11:42:29,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:42:29,227 INFO L470 AbstractCegarLoop]: Abstraction has 9331 states and 29798 transitions. [2022-02-15 11:42:29,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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) [2022-02-15 11:42:29,227 INFO L276 IsEmpty]: Start isEmpty. Operand 9331 states and 29798 transitions. [2022-02-15 11:42:29,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:42:29,243 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:42:29,243 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:42:29,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-02-15 11:42:29,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:42:29,444 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:42:29,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:42:29,444 INFO L85 PathProgramCache]: Analyzing trace with hash -2079337079, now seen corresponding path program 60 times [2022-02-15 11:42:29,444 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:42:29,444 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942701606] [2022-02-15 11:42:29,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:42:29,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:42:29,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:42:29,516 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:42:29,516 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:42:29,516 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942701606] [2022-02-15 11:42:29,516 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942701606] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:42:29,516 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 11:42:29,517 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 11:42:29,517 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85403124] [2022-02-15 11:42:29,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:42:29,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 11:42:29,517 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:42:29,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 11:42:29,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-02-15 11:42:29,519 INFO L87 Difference]: Start difference. First operand 9331 states and 29798 transitions. Second operand has 8 states, 8 states have (on average 20.125) internal successors, (161), 8 states have internal predecessors, (161), 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) [2022-02-15 11:42:29,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:42:29,711 INFO L93 Difference]: Finished difference Result 11249 states and 35425 transitions. [2022-02-15 11:42:29,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-15 11:42:29,712 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.125) internal successors, (161), 8 states have internal predecessors, (161), 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 168 [2022-02-15 11:42:29,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:42:29,736 INFO L225 Difference]: With dead ends: 11249 [2022-02-15 11:42:29,736 INFO L226 Difference]: Without dead ends: 10081 [2022-02-15 11:42:29,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-02-15 11:42:29,737 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 434 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 11:42:29,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [434 Valid, 908 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 11:42:29,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10081 states. [2022-02-15 11:42:29,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10081 to 9283. [2022-02-15 11:42:29,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9283 states, 9282 states have (on average 3.1923076923076925) internal successors, (29631), 9282 states have internal predecessors, (29631), 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) [2022-02-15 11:42:29,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9283 states to 9283 states and 29631 transitions. [2022-02-15 11:42:29,961 INFO L78 Accepts]: Start accepts. Automaton has 9283 states and 29631 transitions. Word has length 168 [2022-02-15 11:42:29,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:42:29,961 INFO L470 AbstractCegarLoop]: Abstraction has 9283 states and 29631 transitions. [2022-02-15 11:42:29,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.125) internal successors, (161), 8 states have internal predecessors, (161), 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) [2022-02-15 11:42:29,961 INFO L276 IsEmpty]: Start isEmpty. Operand 9283 states and 29631 transitions. [2022-02-15 11:42:29,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:42:29,976 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:42:29,976 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:42:29,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-02-15 11:42:29,977 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:42:29,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:42:29,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1878214291, now seen corresponding path program 61 times [2022-02-15 11:42:29,978 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:42:29,978 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382223934] [2022-02-15 11:42:29,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:42:29,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:42:29,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:42:30,036 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:42:30,036 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:42:30,037 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382223934] [2022-02-15 11:42:30,037 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382223934] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:42:30,037 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 11:42:30,037 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-15 11:42:30,037 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387535070] [2022-02-15 11:42:30,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:42:30,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-15 11:42:30,037 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:42:30,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-15 11:42:30,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-02-15 11:42:30,038 INFO L87 Difference]: Start difference. First operand 9283 states and 29631 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 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) [2022-02-15 11:42:30,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:42:30,234 INFO L93 Difference]: Finished difference Result 15142 states and 47915 transitions. [2022-02-15 11:42:30,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-15 11:42:30,234 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 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 168 [2022-02-15 11:42:30,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:42:30,273 INFO L225 Difference]: With dead ends: 15142 [2022-02-15 11:42:30,273 INFO L226 Difference]: Without dead ends: 13330 [2022-02-15 11:42:30,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-02-15 11:42:30,274 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 398 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 11:42:30,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [398 Valid, 766 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 11:42:30,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13330 states. [2022-02-15 11:42:30,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13330 to 8506. [2022-02-15 11:42:30,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8506 states, 8505 states have (on average 3.1760141093474425) internal successors, (27012), 8505 states have internal predecessors, (27012), 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) [2022-02-15 11:42:30,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8506 states to 8506 states and 27012 transitions. [2022-02-15 11:42:30,493 INFO L78 Accepts]: Start accepts. Automaton has 8506 states and 27012 transitions. Word has length 168 [2022-02-15 11:42:30,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:42:30,493 INFO L470 AbstractCegarLoop]: Abstraction has 8506 states and 27012 transitions. [2022-02-15 11:42:30,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 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) [2022-02-15 11:42:30,493 INFO L276 IsEmpty]: Start isEmpty. Operand 8506 states and 27012 transitions. [2022-02-15 11:42:30,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:42:30,507 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:42:30,507 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:42:30,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-02-15 11:42:30,508 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:42:30,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:42:30,508 INFO L85 PathProgramCache]: Analyzing trace with hash -836403963, now seen corresponding path program 62 times [2022-02-15 11:42:30,508 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:42:30,508 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072211423] [2022-02-15 11:42:30,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:42:30,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:42:30,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:42:32,170 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:42:32,171 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:42:32,171 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072211423] [2022-02-15 11:42:32,171 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072211423] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:42:32,171 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927136638] [2022-02-15 11:42:32,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 11:42:32,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:42:32,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:42:32,172 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:42:32,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-02-15 11:42:32,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-02-15 11:42:32,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:42:32,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 40 conjunts are in the unsatisfiable core [2022-02-15 11:42:32,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:42:32,365 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-15 11:42:32,397 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-02-15 11:42:32,398 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-02-15 11:42:32,561 INFO L353 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-02-15 11:42:32,561 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2022-02-15 11:42:33,174 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:42:33,357 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 26 [2022-02-15 11:42:33,515 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:42:33,515 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:42:33,553 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:42:33,554 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 11:42:33,554 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927136638] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:42:33,554 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 11:42:33,554 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [37] total 54 [2022-02-15 11:42:33,554 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451241624] [2022-02-15 11:42:33,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:42:33,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-15 11:42:33,555 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:42:33,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-15 11:42:33,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=2687, Unknown=0, NotChecked=0, Total=2862 [2022-02-15 11:42:33,556 INFO L87 Difference]: Start difference. First operand 8506 states and 27012 transitions. Second operand has 22 states, 22 states have (on average 7.318181818181818) internal successors, (161), 22 states have internal predecessors, (161), 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) [2022-02-15 11:42:34,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:42:34,694 INFO L93 Difference]: Finished difference Result 9971 states and 31333 transitions. [2022-02-15 11:42:34,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-15 11:42:34,695 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 7.318181818181818) internal successors, (161), 22 states have internal predecessors, (161), 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 168 [2022-02-15 11:42:34,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:42:34,716 INFO L225 Difference]: With dead ends: 9971 [2022-02-15 11:42:34,716 INFO L226 Difference]: Without dead ends: 9728 [2022-02-15 11:42:34,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1130 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=412, Invalid=4990, Unknown=0, NotChecked=0, Total=5402 [2022-02-15 11:42:34,717 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 989 mSDsluCounter, 3056 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 2926 SdHoareTripleChecker+Invalid, 1335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 117 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 11:42:34,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [989 Valid, 2926 Invalid, 1335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1166 Invalid, 0 Unknown, 117 Unchecked, 0.4s Time] [2022-02-15 11:42:34,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9728 states. [2022-02-15 11:42:34,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9728 to 8852. [2022-02-15 11:42:34,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8852 states, 8851 states have (on average 3.159191051858547) internal successors, (27962), 8851 states have internal predecessors, (27962), 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) [2022-02-15 11:42:34,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8852 states to 8852 states and 27962 transitions. [2022-02-15 11:42:34,884 INFO L78 Accepts]: Start accepts. Automaton has 8852 states and 27962 transitions. Word has length 168 [2022-02-15 11:42:34,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:42:34,884 INFO L470 AbstractCegarLoop]: Abstraction has 8852 states and 27962 transitions. [2022-02-15 11:42:34,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.318181818181818) internal successors, (161), 22 states have internal predecessors, (161), 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) [2022-02-15 11:42:34,884 INFO L276 IsEmpty]: Start isEmpty. Operand 8852 states and 27962 transitions. [2022-02-15 11:42:34,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:42:34,901 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:42:34,901 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:42:34,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-02-15 11:42:35,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:42:35,102 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:42:35,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:42:35,102 INFO L85 PathProgramCache]: Analyzing trace with hash 930272939, now seen corresponding path program 63 times [2022-02-15 11:42:35,102 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:42:35,102 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098741547] [2022-02-15 11:42:35,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:42:35,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:42:35,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:42:35,862 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:42:35,862 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:42:35,862 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098741547] [2022-02-15 11:42:35,862 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098741547] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:42:35,862 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323142489] [2022-02-15 11:42:35,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 11:42:35,862 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:42:35,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:42:35,863 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:42:35,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-02-15 11:42:36,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-02-15 11:42:36,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:42:36,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-15 11:42:36,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:42:36,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-15 11:42:36,821 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:42:37,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-15 11:42:37,022 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 26 [2022-02-15 11:42:37,143 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:42:37,143 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:42:37,169 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:42:37,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 11:42:37,169 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323142489] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:42:37,169 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 11:42:37,169 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [31] total 47 [2022-02-15 11:42:37,169 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023195537] [2022-02-15 11:42:37,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:42:37,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-15 11:42:37,170 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:42:37,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-15 11:42:37,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=2041, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 11:42:37,171 INFO L87 Difference]: Start difference. First operand 8852 states and 27962 transitions. Second operand has 22 states, 22 states have (on average 7.318181818181818) internal successors, (161), 22 states have internal predecessors, (161), 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) [2022-02-15 11:42:38,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:42:38,333 INFO L93 Difference]: Finished difference Result 10080 states and 31580 transitions. [2022-02-15 11:42:38,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-15 11:42:38,333 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 7.318181818181818) internal successors, (161), 22 states have internal predecessors, (161), 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 168 [2022-02-15 11:42:38,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:42:38,353 INFO L225 Difference]: With dead ends: 10080 [2022-02-15 11:42:38,353 INFO L226 Difference]: Without dead ends: 9407 [2022-02-15 11:42:38,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 153 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 821 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=373, Invalid=4183, Unknown=0, NotChecked=0, Total=4556 [2022-02-15 11:42:38,354 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 967 mSDsluCounter, 2540 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 967 SdHoareTripleChecker+Valid, 2433 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 173 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 11:42:38,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [967 Valid, 2433 Invalid, 1203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 980 Invalid, 0 Unknown, 173 Unchecked, 0.4s Time] [2022-02-15 11:42:38,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9407 states. [2022-02-15 11:42:38,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9407 to 8539. [2022-02-15 11:42:38,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8539 states, 8538 states have (on average 3.1713516045912393) internal successors, (27077), 8538 states have internal predecessors, (27077), 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) [2022-02-15 11:42:38,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8539 states to 8539 states and 27077 transitions. [2022-02-15 11:42:38,575 INFO L78 Accepts]: Start accepts. Automaton has 8539 states and 27077 transitions. Word has length 168 [2022-02-15 11:42:38,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:42:38,575 INFO L470 AbstractCegarLoop]: Abstraction has 8539 states and 27077 transitions. [2022-02-15 11:42:38,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.318181818181818) internal successors, (161), 22 states have internal predecessors, (161), 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) [2022-02-15 11:42:38,575 INFO L276 IsEmpty]: Start isEmpty. Operand 8539 states and 27077 transitions. [2022-02-15 11:42:38,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:42:38,589 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:42:38,590 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:42:38,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-02-15 11:42:38,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-02-15 11:42:38,790 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:42:38,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:42:38,792 INFO L85 PathProgramCache]: Analyzing trace with hash -2026824573, now seen corresponding path program 64 times [2022-02-15 11:42:38,792 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:42:38,792 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182209721] [2022-02-15 11:42:38,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:42:38,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:42:38,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:42:39,870 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:42:39,870 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:42:39,870 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182209721] [2022-02-15 11:42:39,870 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182209721] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:42:39,870 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083894827] [2022-02-15 11:42:39,870 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 11:42:39,870 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:42:39,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:42:39,872 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:42:39,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-02-15 11:42:40,042 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 11:42:40,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:42:40,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 78 conjunts are in the unsatisfiable core [2022-02-15 11:42:40,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:42:40,079 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-15 11:42:40,332 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-15 11:42:40,332 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-15 11:42:41,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-15 11:42:41,689 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:42:41,974 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 38 [2022-02-15 11:42:42,455 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:42:42,455 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 32 [2022-02-15 11:42:42,667 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:42:42,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:42:43,620 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:42:43,620 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 1044 treesize of output 812 [2022-02-15 11:42:43,652 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:42:43,653 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 718 treesize of output 682 [2022-02-15 11:42:43,693 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:42:43,694 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 634 treesize of output 514 [2022-02-15 11:43:02,380 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-02-15 11:43:02,450 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:43:02,451 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083894827] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 11:43:02,451 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 11:43:02,451 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 35, 37] total 92 [2022-02-15 11:43:02,451 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033894510] [2022-02-15 11:43:02,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 11:43:02,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-02-15 11:43:02,451 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:43:02,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-02-15 11:43:02,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=488, Invalid=7836, Unknown=48, NotChecked=0, Total=8372 [2022-02-15 11:43:02,453 INFO L87 Difference]: Start difference. First operand 8539 states and 27077 transitions. Second operand has 92 states, 92 states have (on average 4.706521739130435) internal successors, (433), 92 states have internal predecessors, (433), 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) [2022-02-15 11:43:17,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:43:17,944 INFO L93 Difference]: Finished difference Result 21711 states and 66748 transitions. [2022-02-15 11:43:17,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-02-15 11:43:17,944 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 4.706521739130435) internal successors, (433), 92 states have internal predecessors, (433), 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 168 [2022-02-15 11:43:17,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:43:17,988 INFO L225 Difference]: With dead ends: 21711 [2022-02-15 11:43:17,988 INFO L226 Difference]: Without dead ends: 19652 [2022-02-15 11:43:17,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 283 SyntacticMatches, 7 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 7465 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=5110, Invalid=28503, Unknown=59, NotChecked=0, Total=33672 [2022-02-15 11:43:17,991 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 7139 mSDsluCounter, 15015 mSDsCounter, 0 mSdLazyCounter, 7519 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7139 SdHoareTripleChecker+Valid, 13150 SdHoareTripleChecker+Invalid, 9899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 7519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1914 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-02-15 11:43:17,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7139 Valid, 13150 Invalid, 9899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 7519 Invalid, 0 Unknown, 1914 Unchecked, 3.6s Time] [2022-02-15 11:43:18,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19652 states. [2022-02-15 11:43:18,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19652 to 8920. [2022-02-15 11:43:18,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8920 states, 8919 states have (on average 3.1255746159883393) internal successors, (27877), 8919 states have internal predecessors, (27877), 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) [2022-02-15 11:43:18,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8920 states to 8920 states and 27877 transitions. [2022-02-15 11:43:18,233 INFO L78 Accepts]: Start accepts. Automaton has 8920 states and 27877 transitions. Word has length 168 [2022-02-15 11:43:18,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:43:18,233 INFO L470 AbstractCegarLoop]: Abstraction has 8920 states and 27877 transitions. [2022-02-15 11:43:18,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 4.706521739130435) internal successors, (433), 92 states have internal predecessors, (433), 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) [2022-02-15 11:43:18,234 INFO L276 IsEmpty]: Start isEmpty. Operand 8920 states and 27877 transitions. [2022-02-15 11:43:18,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:43:18,247 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:43:18,247 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:43:18,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-02-15 11:43:18,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2022-02-15 11:43:18,449 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:43:18,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:43:18,449 INFO L85 PathProgramCache]: Analyzing trace with hash -852790243, now seen corresponding path program 65 times [2022-02-15 11:43:18,449 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:43:18,449 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380490894] [2022-02-15 11:43:18,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:43:18,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:43:18,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:43:19,387 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:43:19,387 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:43:19,387 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380490894] [2022-02-15 11:43:19,387 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380490894] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:43:19,387 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573479498] [2022-02-15 11:43:19,388 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 11:43:19,388 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:43:19,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:43:19,389 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:43:19,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-02-15 11:43:19,551 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-15 11:43:19,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:43:19,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 41 conjunts are in the unsatisfiable core [2022-02-15 11:43:19,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:43:20,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-15 11:43:20,369 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:43:20,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-15 11:43:20,482 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:43:20,689 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:43:20,690 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:43:20,709 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-15 11:43:20,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:43:20,862 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2275 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_2275) c_~f~0.base))) (= (select .cse0 (+ c_~f~0.offset (* c_~i2~0 4))) (select .cse0 (+ c_~f~0.offset (* (select .cse0 (+ c_~f~0.offset (* c_~j~0 4))) 4)))))) is different from false [2022-02-15 11:43:20,875 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2275 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_2275) c_~f~0.base))) (= (select .cse0 (+ c_~f~0.offset (* c_~i~0 4))) (select .cse0 (+ c_~f~0.offset (* (select .cse0 (+ c_~f~0.offset (* c_~j~0 4))) 4)))))) is different from false [2022-02-15 11:43:20,919 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2275 (Array Int Int)) (v_ArrVal_2274 (Array Int Int))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2274) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_2275) c_~f~0.base))) (= (select .cse0 (+ c_~f~0.offset (* (select .cse0 (+ c_~f~0.offset (* c_~j~0 4))) 4))) (select .cse0 (+ c_~f~0.offset (* c_~i~0 4)))))) is different from false [2022-02-15 11:43:20,964 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:43:20,965 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 314 treesize of output 290 [2022-02-15 11:43:20,989 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:43:20,990 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 117 [2022-02-15 11:43:21,016 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:43:21,016 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 202 treesize of output 157 [2022-02-15 11:43:22,204 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:43:22,204 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573479498] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-15 11:43:22,205 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-15 11:43:22,205 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [31, 24] total 65 [2022-02-15 11:43:22,205 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583789661] [2022-02-15 11:43:22,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:43:22,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-15 11:43:22,205 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:43:22,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-15 11:43:22,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=3573, Unknown=3, NotChecked=366, Total=4160 [2022-02-15 11:43:22,206 INFO L87 Difference]: Start difference. First operand 8920 states and 27877 transitions. Second operand has 22 states, 22 states have (on average 7.318181818181818) internal successors, (161), 22 states have internal predecessors, (161), 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) [2022-02-15 11:43:23,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:43:23,641 INFO L93 Difference]: Finished difference Result 10496 states and 32623 transitions. [2022-02-15 11:43:23,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-15 11:43:23,642 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 7.318181818181818) internal successors, (161), 22 states have internal predecessors, (161), 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 168 [2022-02-15 11:43:23,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:43:23,664 INFO L225 Difference]: With dead ends: 10496 [2022-02-15 11:43:23,665 INFO L226 Difference]: Without dead ends: 10032 [2022-02-15 11:43:23,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 304 SyntacticMatches, 3 SemanticMatches, 84 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 1511 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=492, Invalid=6323, Unknown=3, NotChecked=492, Total=7310 [2022-02-15 11:43:23,666 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 1190 mSDsluCounter, 2333 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1190 SdHoareTripleChecker+Valid, 2299 SdHoareTripleChecker+Invalid, 2181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1030 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 11:43:23,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1190 Valid, 2299 Invalid, 2181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1067 Invalid, 0 Unknown, 1030 Unchecked, 0.5s Time] [2022-02-15 11:43:23,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10032 states. [2022-02-15 11:43:23,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10032 to 8948. [2022-02-15 11:43:23,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8948 states, 8947 states have (on average 3.1195931597183413) internal successors, (27911), 8947 states have internal predecessors, (27911), 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) [2022-02-15 11:43:23,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8948 states to 8948 states and 27911 transitions. [2022-02-15 11:43:23,829 INFO L78 Accepts]: Start accepts. Automaton has 8948 states and 27911 transitions. Word has length 168 [2022-02-15 11:43:23,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:43:23,829 INFO L470 AbstractCegarLoop]: Abstraction has 8948 states and 27911 transitions. [2022-02-15 11:43:23,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.318181818181818) internal successors, (161), 22 states have internal predecessors, (161), 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) [2022-02-15 11:43:23,829 INFO L276 IsEmpty]: Start isEmpty. Operand 8948 states and 27911 transitions. [2022-02-15 11:43:23,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:43:23,844 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:43:23,844 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:43:23,861 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2022-02-15 11:43:24,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2022-02-15 11:43:24,045 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:43:24,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:43:24,045 INFO L85 PathProgramCache]: Analyzing trace with hash 507746655, now seen corresponding path program 66 times [2022-02-15 11:43:24,045 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:43:24,045 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098268317] [2022-02-15 11:43:24,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:43:24,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:43:24,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:43:26,228 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:43:26,228 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:43:26,229 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098268317] [2022-02-15 11:43:26,229 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098268317] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:43:26,229 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142501104] [2022-02-15 11:43:26,229 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 11:43:26,229 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:43:26,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:43:26,231 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:43:26,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-02-15 11:43:26,393 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-02-15 11:43:26,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:43:26,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-15 11:43:26,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:43:27,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-15 11:43:27,259 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:43:27,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-15 11:43:27,348 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:43:27,579 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:43:27,579 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:43:27,606 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:43:27,606 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 11:43:27,606 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142501104] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:43:27,606 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 11:43:27,606 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [36] total 53 [2022-02-15 11:43:27,606 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372400940] [2022-02-15 11:43:27,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:43:27,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-15 11:43:27,607 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:43:27,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-15 11:43:27,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=2600, Unknown=0, NotChecked=0, Total=2756 [2022-02-15 11:43:27,608 INFO L87 Difference]: Start difference. First operand 8948 states and 27911 transitions. Second operand has 22 states, 22 states have (on average 7.318181818181818) internal successors, (161), 22 states have internal predecessors, (161), 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) [2022-02-15 11:43:28,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:43:28,663 INFO L93 Difference]: Finished difference Result 12256 states and 37940 transitions. [2022-02-15 11:43:28,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-15 11:43:28,663 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 7.318181818181818) internal successors, (161), 22 states have internal predecessors, (161), 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 168 [2022-02-15 11:43:28,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:43:28,689 INFO L225 Difference]: With dead ends: 12256 [2022-02-15 11:43:28,690 INFO L226 Difference]: Without dead ends: 12181 [2022-02-15 11:43:28,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1088 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=388, Invalid=4868, Unknown=0, NotChecked=0, Total=5256 [2022-02-15 11:43:28,691 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 1057 mSDsluCounter, 2839 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 2695 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 431 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 11:43:28,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1057 Valid, 2695 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 705 Invalid, 0 Unknown, 431 Unchecked, 0.3s Time] [2022-02-15 11:43:28,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12181 states. [2022-02-15 11:43:28,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12181 to 9824. [2022-02-15 11:43:28,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9824 states, 9823 states have (on average 3.128575791509722) internal successors, (30732), 9823 states have internal predecessors, (30732), 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) [2022-02-15 11:43:28,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9824 states to 9824 states and 30732 transitions. [2022-02-15 11:43:28,933 INFO L78 Accepts]: Start accepts. Automaton has 9824 states and 30732 transitions. Word has length 168 [2022-02-15 11:43:28,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:43:28,933 INFO L470 AbstractCegarLoop]: Abstraction has 9824 states and 30732 transitions. [2022-02-15 11:43:28,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.318181818181818) internal successors, (161), 22 states have internal predecessors, (161), 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) [2022-02-15 11:43:28,933 INFO L276 IsEmpty]: Start isEmpty. Operand 9824 states and 30732 transitions. [2022-02-15 11:43:28,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:43:28,950 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:43:28,950 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:43:28,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-02-15 11:43:29,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:43:29,150 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:43:29,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:43:29,152 INFO L85 PathProgramCache]: Analyzing trace with hash 934881005, now seen corresponding path program 67 times [2022-02-15 11:43:29,152 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:43:29,152 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803584348] [2022-02-15 11:43:29,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:43:29,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:43:29,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:43:29,856 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:43:29,856 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:43:29,856 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803584348] [2022-02-15 11:43:29,856 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803584348] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:43:29,856 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716732493] [2022-02-15 11:43:29,856 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 11:43:29,856 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:43:29,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:43:29,858 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:43:29,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-02-15 11:43:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:43:30,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-15 11:43:30,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:43:31,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-15 11:43:31,535 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:43:31,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-15 11:43:31,761 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:43:32,182 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:43:32,183 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 32 [2022-02-15 11:43:32,216 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:43:32,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:43:32,889 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:43:32,889 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 626 treesize of output 554 [2022-02-15 11:43:32,917 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:43:32,917 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 232 treesize of output 220 [2022-02-15 11:43:32,943 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:43:32,943 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 400 treesize of output 328 [2022-02-15 11:43:40,443 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:43:40,443 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716732493] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 11:43:40,443 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 11:43:40,443 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 35, 35] total 87 [2022-02-15 11:43:40,443 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832268129] [2022-02-15 11:43:40,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 11:43:40,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-02-15 11:43:40,444 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:43:40,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-02-15 11:43:40,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=422, Invalid=7023, Unknown=37, NotChecked=0, Total=7482 [2022-02-15 11:43:40,445 INFO L87 Difference]: Start difference. First operand 9824 states and 30732 transitions. Second operand has 87 states, 87 states have (on average 4.367816091954023) internal successors, (380), 87 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) [2022-02-15 11:43:53,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:43:53,898 INFO L93 Difference]: Finished difference Result 23449 states and 72050 transitions. [2022-02-15 11:43:53,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-02-15 11:43:53,898 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 4.367816091954023) internal successors, (380), 87 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) Word has length 168 [2022-02-15 11:43:53,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:43:53,944 INFO L225 Difference]: With dead ends: 23449 [2022-02-15 11:43:53,944 INFO L226 Difference]: Without dead ends: 21972 [2022-02-15 11:43:53,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 292 SyntacticMatches, 16 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8506 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=4001, Invalid=28178, Unknown=41, NotChecked=0, Total=32220 [2022-02-15 11:43:53,947 INFO L933 BasicCegarLoop]: 386 mSDtfsCounter, 5906 mSDsluCounter, 16967 mSDsCounter, 0 mSdLazyCounter, 7045 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5906 SdHoareTripleChecker+Valid, 15001 SdHoareTripleChecker+Invalid, 9656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 7045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2294 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-02-15 11:43:53,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5906 Valid, 15001 Invalid, 9656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 7045 Invalid, 0 Unknown, 2294 Unchecked, 3.0s Time] [2022-02-15 11:43:53,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21972 states. [2022-02-15 11:43:54,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21972 to 10687. [2022-02-15 11:43:54,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10687 states, 10686 states have (on average 3.1135130076735917) internal successors, (33271), 10686 states have internal predecessors, (33271), 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) [2022-02-15 11:43:54,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10687 states to 10687 states and 33271 transitions. [2022-02-15 11:43:54,212 INFO L78 Accepts]: Start accepts. Automaton has 10687 states and 33271 transitions. Word has length 168 [2022-02-15 11:43:54,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:43:54,213 INFO L470 AbstractCegarLoop]: Abstraction has 10687 states and 33271 transitions. [2022-02-15 11:43:54,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 4.367816091954023) internal successors, (380), 87 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) [2022-02-15 11:43:54,213 INFO L276 IsEmpty]: Start isEmpty. Operand 10687 states and 33271 transitions. [2022-02-15 11:43:54,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:43:54,275 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:43:54,275 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:43:54,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-02-15 11:43:54,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:43:54,476 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:43:54,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:43:54,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1859488223, now seen corresponding path program 68 times [2022-02-15 11:43:54,477 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:43:54,477 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010572327] [2022-02-15 11:43:54,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:43:54,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:43:54,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:43:59,267 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:43:59,267 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:43:59,267 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010572327] [2022-02-15 11:43:59,267 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010572327] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:43:59,267 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182785786] [2022-02-15 11:43:59,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 11:43:59,267 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:43:59,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:43:59,268 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:43:59,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-02-15 11:43:59,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-02-15 11:43:59,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:43:59,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-15 11:43:59,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:44:00,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-15 11:44:00,361 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:44:00,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-15 11:44:00,448 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:44:00,684 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:44:00,684 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:44:00,715 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:44:00,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 11:44:00,715 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182785786] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:44:00,715 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 11:44:00,715 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [40] total 58 [2022-02-15 11:44:00,715 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558931337] [2022-02-15 11:44:00,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:44:00,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-15 11:44:00,716 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:44:00,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-15 11:44:00,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=3122, Unknown=0, NotChecked=0, Total=3306 [2022-02-15 11:44:00,716 INFO L87 Difference]: Start difference. First operand 10687 states and 33271 transitions. Second operand has 23 states, 23 states have (on average 7.0) internal successors, (161), 23 states have internal predecessors, (161), 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) [2022-02-15 11:44:01,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:44:01,903 INFO L93 Difference]: Finished difference Result 14860 states and 45643 transitions. [2022-02-15 11:44:01,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-15 11:44:01,903 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.0) internal successors, (161), 23 states have internal predecessors, (161), 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 168 [2022-02-15 11:44:01,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:44:01,937 INFO L225 Difference]: With dead ends: 14860 [2022-02-15 11:44:01,937 INFO L226 Difference]: Without dead ends: 14581 [2022-02-15 11:44:01,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1463 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=435, Invalid=5885, Unknown=0, NotChecked=0, Total=6320 [2022-02-15 11:44:01,938 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 1159 mSDsluCounter, 2700 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1159 SdHoareTripleChecker+Valid, 2602 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 319 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 11:44:01,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1159 Valid, 2602 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 738 Invalid, 0 Unknown, 319 Unchecked, 0.3s Time] [2022-02-15 11:44:01,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14581 states. [2022-02-15 11:44:02,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14581 to 10887. [2022-02-15 11:44:02,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10887 states, 10886 states have (on average 3.109222855043175) internal successors, (33847), 10886 states have internal predecessors, (33847), 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) [2022-02-15 11:44:02,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10887 states to 10887 states and 33847 transitions. [2022-02-15 11:44:02,160 INFO L78 Accepts]: Start accepts. Automaton has 10887 states and 33847 transitions. Word has length 168 [2022-02-15 11:44:02,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:44:02,160 INFO L470 AbstractCegarLoop]: Abstraction has 10887 states and 33847 transitions. [2022-02-15 11:44:02,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.0) internal successors, (161), 23 states have internal predecessors, (161), 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) [2022-02-15 11:44:02,161 INFO L276 IsEmpty]: Start isEmpty. Operand 10887 states and 33847 transitions. [2022-02-15 11:44:02,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:44:02,178 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:44:02,178 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:44:02,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-02-15 11:44:02,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-02-15 11:44:02,379 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:44:02,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:44:02,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1093991007, now seen corresponding path program 69 times [2022-02-15 11:44:02,379 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:44:02,379 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162957222] [2022-02-15 11:44:02,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:44:02,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:44:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:44:04,729 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:44:04,729 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:44:04,729 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162957222] [2022-02-15 11:44:04,730 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162957222] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:44:04,730 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939772105] [2022-02-15 11:44:04,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 11:44:04,730 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:44:04,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:44:04,731 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:44:04,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-02-15 11:44:04,912 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-02-15 11:44:04,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:44:04,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 42 conjunts are in the unsatisfiable core [2022-02-15 11:44:04,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:44:04,944 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-15 11:44:04,978 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-02-15 11:44:04,979 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-02-15 11:44:05,142 INFO L353 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-02-15 11:44:05,142 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2022-02-15 11:44:05,769 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:44:05,851 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:44:06,085 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:44:06,086 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:44:06,113 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:44:06,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 11:44:06,113 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939772105] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:44:06,114 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 11:44:06,114 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [37] total 54 [2022-02-15 11:44:06,114 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371952076] [2022-02-15 11:44:06,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:44:06,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-15 11:44:06,114 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:44:06,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-15 11:44:06,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=2683, Unknown=0, NotChecked=0, Total=2862 [2022-02-15 11:44:06,115 INFO L87 Difference]: Start difference. First operand 10887 states and 33847 transitions. Second operand has 22 states, 22 states have (on average 7.318181818181818) internal successors, (161), 22 states have internal predecessors, (161), 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) [2022-02-15 11:44:07,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:44:07,334 INFO L93 Difference]: Finished difference Result 14228 states and 43463 transitions. [2022-02-15 11:44:07,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-15 11:44:07,334 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 7.318181818181818) internal successors, (161), 22 states have internal predecessors, (161), 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 168 [2022-02-15 11:44:07,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:44:07,365 INFO L225 Difference]: With dead ends: 14228 [2022-02-15 11:44:07,365 INFO L226 Difference]: Without dead ends: 13799 [2022-02-15 11:44:07,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1383 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=485, Invalid=5835, Unknown=0, NotChecked=0, Total=6320 [2022-02-15 11:44:07,365 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 921 mSDsluCounter, 3021 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 2892 SdHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 351 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 11:44:07,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [921 Valid, 2892 Invalid, 1222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 828 Invalid, 0 Unknown, 351 Unchecked, 0.3s Time] [2022-02-15 11:44:07,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13799 states. [2022-02-15 11:44:07,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13799 to 10762. [2022-02-15 11:44:07,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10762 states, 10761 states have (on average 3.1095623083356565) internal successors, (33462), 10761 states have internal predecessors, (33462), 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) [2022-02-15 11:44:07,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10762 states to 10762 states and 33462 transitions. [2022-02-15 11:44:07,563 INFO L78 Accepts]: Start accepts. Automaton has 10762 states and 33462 transitions. Word has length 168 [2022-02-15 11:44:07,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:44:07,563 INFO L470 AbstractCegarLoop]: Abstraction has 10762 states and 33462 transitions. [2022-02-15 11:44:07,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.318181818181818) internal successors, (161), 22 states have internal predecessors, (161), 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) [2022-02-15 11:44:07,564 INFO L276 IsEmpty]: Start isEmpty. Operand 10762 states and 33462 transitions. [2022-02-15 11:44:07,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:44:07,580 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:44:07,581 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:44:07,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-02-15 11:44:07,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:44:07,781 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:44:07,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:44:07,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1499708109, now seen corresponding path program 70 times [2022-02-15 11:44:07,782 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:44:07,782 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534421158] [2022-02-15 11:44:07,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:44:07,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:44:07,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:44:08,516 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:44:08,517 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:44:08,517 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534421158] [2022-02-15 11:44:08,517 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534421158] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:44:08,517 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479196519] [2022-02-15 11:44:08,517 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 11:44:08,517 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:44:08,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:44:08,518 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:44:08,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-02-15 11:44:08,695 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 11:44:08,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:44:08,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 77 conjunts are in the unsatisfiable core [2022-02-15 11:44:08,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:44:08,732 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-15 11:44:08,976 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-15 11:44:08,976 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-15 11:44:10,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-15 11:44:10,412 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:44:10,655 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:44:11,126 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:44:11,127 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 28 [2022-02-15 11:44:11,156 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:44:11,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:44:11,754 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:44:11,754 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 626 treesize of output 554 [2022-02-15 11:44:11,777 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:44:11,777 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 460 treesize of output 448 [2022-02-15 11:44:11,801 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:44:11,802 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 400 treesize of output 328 [2022-02-15 11:44:17,591 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-02-15 11:44:17,655 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:44:17,656 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479196519] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 11:44:17,656 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 11:44:17,656 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 35, 36] total 91 [2022-02-15 11:44:17,656 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660649602] [2022-02-15 11:44:17,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 11:44:17,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-02-15 11:44:17,656 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:44:17,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-02-15 11:44:17,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=559, Invalid=7608, Unknown=23, NotChecked=0, Total=8190 [2022-02-15 11:44:17,658 INFO L87 Difference]: Start difference. First operand 10762 states and 33462 transitions. Second operand has 91 states, 91 states have (on average 4.626373626373627) internal successors, (421), 91 states have internal predecessors, (421), 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) [2022-02-15 11:44:26,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:44:26,961 INFO L93 Difference]: Finished difference Result 24451 states and 75313 transitions. [2022-02-15 11:44:26,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-02-15 11:44:26,961 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 4.626373626373627) internal successors, (421), 91 states have internal predecessors, (421), 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 168 [2022-02-15 11:44:26,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:44:27,018 INFO L225 Difference]: With dead ends: 24451 [2022-02-15 11:44:27,018 INFO L226 Difference]: Without dead ends: 24289 [2022-02-15 11:44:27,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 281 SyntacticMatches, 2 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 7744 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=3796, Invalid=24571, Unknown=25, NotChecked=0, Total=28392 [2022-02-15 11:44:27,019 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 5568 mSDsluCounter, 13116 mSDsCounter, 0 mSdLazyCounter, 5499 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5568 SdHoareTripleChecker+Valid, 10988 SdHoareTripleChecker+Invalid, 8763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 5499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2931 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-02-15 11:44:27,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5568 Valid, 10988 Invalid, 8763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 5499 Invalid, 0 Unknown, 2931 Unchecked, 2.5s Time] [2022-02-15 11:44:27,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24289 states. [2022-02-15 11:44:27,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24289 to 11227. [2022-02-15 11:44:27,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11227 states, 11226 states have (on average 3.1071619454836985) internal successors, (34881), 11226 states have internal predecessors, (34881), 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) [2022-02-15 11:44:27,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11227 states to 11227 states and 34881 transitions. [2022-02-15 11:44:27,329 INFO L78 Accepts]: Start accepts. Automaton has 11227 states and 34881 transitions. Word has length 168 [2022-02-15 11:44:27,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:44:27,329 INFO L470 AbstractCegarLoop]: Abstraction has 11227 states and 34881 transitions. [2022-02-15 11:44:27,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 4.626373626373627) internal successors, (421), 91 states have internal predecessors, (421), 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) [2022-02-15 11:44:27,329 INFO L276 IsEmpty]: Start isEmpty. Operand 11227 states and 34881 transitions. [2022-02-15 11:44:27,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:44:27,347 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:44:27,347 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:44:27,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2022-02-15 11:44:27,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:44:27,548 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:44:27,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:44:27,548 INFO L85 PathProgramCache]: Analyzing trace with hash -929186593, now seen corresponding path program 71 times [2022-02-15 11:44:27,548 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:44:27,548 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014227510] [2022-02-15 11:44:27,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:44:27,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:44:27,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:44:28,454 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:44:28,454 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:44:28,454 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014227510] [2022-02-15 11:44:28,454 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014227510] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:44:28,454 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62937579] [2022-02-15 11:44:28,454 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 11:44:28,454 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:44:28,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:44:28,455 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:44:28,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-02-15 11:44:28,630 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-15 11:44:28,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:44:28,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 50 conjunts are in the unsatisfiable core [2022-02-15 11:44:28,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:44:28,662 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-15 11:44:28,701 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-02-15 11:44:28,701 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-02-15 11:44:28,951 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-15 11:44:28,951 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-02-15 11:44:29,604 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:44:29,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-15 11:44:29,690 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:44:29,912 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:44:29,913 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:44:29,939 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-15 11:44:29,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:44:30,126 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2509 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_2509) c_~f~0.base))) (= (select .cse0 (+ c_~f~0.offset (* (select .cse0 (+ c_~f~0.offset (* c_~j~0 4))) 4))) (select .cse0 (+ c_~f~0.offset (* c_~i~0 4)))))) is different from false [2022-02-15 11:44:30,167 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2509 (Array Int Int)) (v_ArrVal_2508 (Array Int Int))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2508) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_2509) c_~f~0.base))) (= (select .cse0 (+ c_~f~0.offset (* c_~i~0 4))) (select .cse0 (+ c_~f~0.offset (* (select .cse0 (+ c_~f~0.offset (* c_~j~0 4))) 4)))))) is different from false [2022-02-15 11:44:30,214 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:44:30,215 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 152 treesize of output 184 [2022-02-15 11:44:30,236 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:44:30,237 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 111 [2022-02-15 11:44:30,262 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:44:30,262 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 84 [2022-02-15 11:44:32,040 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:44:32,040 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62937579] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-15 11:44:32,040 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-15 11:44:32,040 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [31, 24] total 67 [2022-02-15 11:44:32,040 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041397224] [2022-02-15 11:44:32,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:44:32,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-15 11:44:32,041 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:44:32,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-15 11:44:32,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=3930, Unknown=2, NotChecked=254, Total=4422 [2022-02-15 11:44:32,041 INFO L87 Difference]: Start difference. First operand 11227 states and 34881 transitions. Second operand has 22 states, 22 states have (on average 7.318181818181818) internal successors, (161), 22 states have internal predecessors, (161), 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) [2022-02-15 11:44:33,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:44:33,682 INFO L93 Difference]: Finished difference Result 15209 states and 47417 transitions. [2022-02-15 11:44:33,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-15 11:44:33,683 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 7.318181818181818) internal successors, (161), 22 states have internal predecessors, (161), 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 168 [2022-02-15 11:44:33,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:44:33,708 INFO L225 Difference]: With dead ends: 15209 [2022-02-15 11:44:33,709 INFO L226 Difference]: Without dead ends: 11803 [2022-02-15 11:44:33,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 303 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1693 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=517, Invalid=6971, Unknown=2, NotChecked=342, Total=7832 [2022-02-15 11:44:33,710 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 1131 mSDsluCounter, 2688 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1131 SdHoareTripleChecker+Valid, 2591 SdHoareTripleChecker+Invalid, 1917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 668 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 11:44:33,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1131 Valid, 2591 Invalid, 1917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1187 Invalid, 0 Unknown, 668 Unchecked, 0.5s Time] [2022-02-15 11:44:33,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11803 states. [2022-02-15 11:44:33,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11803 to 6942. [2022-02-15 11:44:33,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6942 states, 6941 states have (on average 3.0482639389137014) internal successors, (21158), 6941 states have internal predecessors, (21158), 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) [2022-02-15 11:44:33,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6942 states to 6942 states and 21158 transitions. [2022-02-15 11:44:33,877 INFO L78 Accepts]: Start accepts. Automaton has 6942 states and 21158 transitions. Word has length 168 [2022-02-15 11:44:33,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:44:33,877 INFO L470 AbstractCegarLoop]: Abstraction has 6942 states and 21158 transitions. [2022-02-15 11:44:33,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.318181818181818) internal successors, (161), 22 states have internal predecessors, (161), 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) [2022-02-15 11:44:33,878 INFO L276 IsEmpty]: Start isEmpty. Operand 6942 states and 21158 transitions. [2022-02-15 11:44:33,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:44:33,889 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:44:33,890 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:44:33,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-02-15 11:44:34,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2022-02-15 11:44:34,091 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:44:34,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:44:34,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1806443889, now seen corresponding path program 72 times [2022-02-15 11:44:34,091 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:44:34,092 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635210033] [2022-02-15 11:44:34,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:44:34,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:44:34,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:44:35,029 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:44:35,029 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:44:35,029 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635210033] [2022-02-15 11:44:35,029 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635210033] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:44:35,029 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30394968] [2022-02-15 11:44:35,029 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 11:44:35,029 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:44:35,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:44:35,031 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:44:35,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-02-15 11:44:35,200 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-02-15 11:44:35,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:44:35,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 40 conjunts are in the unsatisfiable core [2022-02-15 11:44:35,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:44:36,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-15 11:44:36,064 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:44:36,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-15 11:44:36,228 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:44:36,436 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:44:36,437 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:44:36,456 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:44:36,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 11:44:36,456 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30394968] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:44:36,456 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 11:44:36,456 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [31] total 47 [2022-02-15 11:44:36,456 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395161651] [2022-02-15 11:44:36,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:44:36,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-15 11:44:36,457 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:44:36,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-15 11:44:36,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=2038, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 11:44:36,457 INFO L87 Difference]: Start difference. First operand 6942 states and 21158 transitions. Second operand has 23 states, 23 states have (on average 7.0) internal successors, (161), 23 states have internal predecessors, (161), 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) [2022-02-15 11:44:38,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:44:38,069 INFO L93 Difference]: Finished difference Result 8988 states and 26737 transitions. [2022-02-15 11:44:38,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-15 11:44:38,070 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.0) internal successors, (161), 23 states have internal predecessors, (161), 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 168 [2022-02-15 11:44:38,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:44:38,087 INFO L225 Difference]: With dead ends: 8988 [2022-02-15 11:44:38,088 INFO L226 Difference]: Without dead ends: 8577 [2022-02-15 11:44:38,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 154 SyntacticMatches, 3 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1318 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=569, Invalid=5751, Unknown=0, NotChecked=0, Total=6320 [2022-02-15 11:44:38,088 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 1047 mSDsluCounter, 3488 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1047 SdHoareTripleChecker+Valid, 3266 SdHoareTripleChecker+Invalid, 1760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 423 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 11:44:38,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1047 Valid, 3266 Invalid, 1760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1289 Invalid, 0 Unknown, 423 Unchecked, 0.5s Time] [2022-02-15 11:44:38,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8577 states. [2022-02-15 11:44:38,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8577 to 7146. [2022-02-15 11:44:38,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7146 states, 7145 states have (on average 3.0502449265220433) internal successors, (21794), 7145 states have internal predecessors, (21794), 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) [2022-02-15 11:44:38,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7146 states to 7146 states and 21794 transitions. [2022-02-15 11:44:38,222 INFO L78 Accepts]: Start accepts. Automaton has 7146 states and 21794 transitions. Word has length 168 [2022-02-15 11:44:38,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:44:38,222 INFO L470 AbstractCegarLoop]: Abstraction has 7146 states and 21794 transitions. [2022-02-15 11:44:38,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.0) internal successors, (161), 23 states have internal predecessors, (161), 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) [2022-02-15 11:44:38,222 INFO L276 IsEmpty]: Start isEmpty. Operand 7146 states and 21794 transitions. [2022-02-15 11:44:38,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:44:38,234 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:44:38,234 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:44:38,252 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2022-02-15 11:44:38,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:44:38,435 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:44:38,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:44:38,435 INFO L85 PathProgramCache]: Analyzing trace with hash -2086522839, now seen corresponding path program 73 times [2022-02-15 11:44:38,435 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:44:38,435 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770438797] [2022-02-15 11:44:38,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:44:38,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:44:38,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:44:39,554 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:44:39,555 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:44:39,555 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770438797] [2022-02-15 11:44:39,555 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770438797] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:44:39,555 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043048307] [2022-02-15 11:44:39,555 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 11:44:39,555 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:44:39,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:44:39,556 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:44:39,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-02-15 11:44:39,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:44:39,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 63 conjunts are in the unsatisfiable core [2022-02-15 11:44:39,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:44:41,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-15 11:44:41,473 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:44:41,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-15 11:44:41,789 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 38 [2022-02-15 11:44:42,214 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:44:42,215 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 32 [2022-02-15 11:44:42,251 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:44:42,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:44:42,998 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:44:42,998 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 626 treesize of output 554 [2022-02-15 11:44:43,021 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:44:43,021 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 460 treesize of output 448 [2022-02-15 11:44:43,046 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:44:43,046 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 400 treesize of output 328 [2022-02-15 11:44:54,610 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:44:54,611 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043048307] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 11:44:54,611 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 11:44:54,611 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 35, 35] total 93 [2022-02-15 11:44:54,611 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6747885] [2022-02-15 11:44:54,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 11:44:54,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2022-02-15 11:44:54,612 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:44:54,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2022-02-15 11:44:54,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=432, Invalid=8084, Unknown=40, NotChecked=0, Total=8556 [2022-02-15 11:44:54,613 INFO L87 Difference]: Start difference. First operand 7146 states and 21794 transitions. Second operand has 93 states, 93 states have (on average 4.505376344086022) internal successors, (419), 93 states have internal predecessors, (419), 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) [2022-02-15 11:45:08,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:45:08,042 INFO L93 Difference]: Finished difference Result 15349 states and 46821 transitions. [2022-02-15 11:45:08,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-02-15 11:45:08,043 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 4.505376344086022) internal successors, (419), 93 states have internal predecessors, (419), 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 168 [2022-02-15 11:45:08,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:45:08,076 INFO L225 Difference]: With dead ends: 15349 [2022-02-15 11:45:08,076 INFO L226 Difference]: Without dead ends: 14267 [2022-02-15 11:45:08,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 285 SyntacticMatches, 7 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6206 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=3910, Invalid=24094, Unknown=52, NotChecked=0, Total=28056 [2022-02-15 11:45:08,078 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 6675 mSDsluCounter, 12563 mSDsCounter, 0 mSdLazyCounter, 5346 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6675 SdHoareTripleChecker+Valid, 11109 SdHoareTripleChecker+Invalid, 7661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 5346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1897 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-02-15 11:45:08,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6675 Valid, 11109 Invalid, 7661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 5346 Invalid, 0 Unknown, 1897 Unchecked, 2.4s Time] [2022-02-15 11:45:08,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14267 states. [2022-02-15 11:45:08,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14267 to 6923. [2022-02-15 11:45:08,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6923 states, 6922 states have (on average 3.0720889916209186) internal successors, (21265), 6922 states have internal predecessors, (21265), 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) [2022-02-15 11:45:08,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6923 states to 6923 states and 21265 transitions. [2022-02-15 11:45:08,255 INFO L78 Accepts]: Start accepts. Automaton has 6923 states and 21265 transitions. Word has length 168 [2022-02-15 11:45:08,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:45:08,255 INFO L470 AbstractCegarLoop]: Abstraction has 6923 states and 21265 transitions. [2022-02-15 11:45:08,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 4.505376344086022) internal successors, (419), 93 states have internal predecessors, (419), 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) [2022-02-15 11:45:08,255 INFO L276 IsEmpty]: Start isEmpty. Operand 6923 states and 21265 transitions. [2022-02-15 11:45:08,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:45:08,266 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:45:08,266 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:45:08,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-02-15 11:45:08,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2022-02-15 11:45:08,467 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:45:08,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:45:08,468 INFO L85 PathProgramCache]: Analyzing trace with hash -970496235, now seen corresponding path program 74 times [2022-02-15 11:45:08,468 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:45:08,468 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069957359] [2022-02-15 11:45:08,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:45:08,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:45:08,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:45:08,518 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:45:08,518 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:45:08,518 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069957359] [2022-02-15 11:45:08,518 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069957359] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:45:08,518 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 11:45:08,518 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-15 11:45:08,518 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473745342] [2022-02-15 11:45:08,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:45:08,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-15 11:45:08,519 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:45:08,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-15 11:45:08,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-02-15 11:45:08,519 INFO L87 Difference]: Start difference. First operand 6923 states and 21265 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 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) [2022-02-15 11:45:08,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:45:08,684 INFO L93 Difference]: Finished difference Result 8791 states and 26611 transitions. [2022-02-15 11:45:08,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-15 11:45:08,684 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 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 168 [2022-02-15 11:45:08,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:45:08,703 INFO L225 Difference]: With dead ends: 8791 [2022-02-15 11:45:08,703 INFO L226 Difference]: Without dead ends: 8791 [2022-02-15 11:45:08,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-02-15 11:45:08,703 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 371 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 11:45:08,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 866 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 11:45:08,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8791 states. [2022-02-15 11:45:08,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8791 to 7767. [2022-02-15 11:45:08,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7767 states, 7766 states have (on average 3.061164048416173) internal successors, (23773), 7766 states have internal predecessors, (23773), 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) [2022-02-15 11:45:08,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7767 states to 7767 states and 23773 transitions. [2022-02-15 11:45:08,845 INFO L78 Accepts]: Start accepts. Automaton has 7767 states and 23773 transitions. Word has length 168 [2022-02-15 11:45:08,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:45:08,845 INFO L470 AbstractCegarLoop]: Abstraction has 7767 states and 23773 transitions. [2022-02-15 11:45:08,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 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) [2022-02-15 11:45:08,845 INFO L276 IsEmpty]: Start isEmpty. Operand 7767 states and 23773 transitions. [2022-02-15 11:45:08,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:45:08,858 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:45:08,858 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:45:08,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-02-15 11:45:08,859 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:45:08,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:45:08,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1570504547, now seen corresponding path program 75 times [2022-02-15 11:45:08,859 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:45:08,859 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890782285] [2022-02-15 11:45:08,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:45:08,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:45:08,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:45:09,593 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:45:09,593 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:45:09,593 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890782285] [2022-02-15 11:45:09,593 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890782285] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:45:09,594 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476644927] [2022-02-15 11:45:09,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 11:45:09,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:45:09,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:45:09,595 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:45:09,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-02-15 11:45:09,772 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-02-15 11:45:09,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:45:09,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 38 conjunts are in the unsatisfiable core [2022-02-15 11:45:09,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:45:09,804 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-15 11:45:09,867 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-15 11:45:09,867 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-15 11:45:10,368 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 26 [2022-02-15 11:45:10,461 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:45:10,461 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:45:10,489 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:45:10,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 11:45:10,490 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476644927] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:45:10,490 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 11:45:10,490 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [31] total 45 [2022-02-15 11:45:10,490 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442799191] [2022-02-15 11:45:10,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:45:10,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 11:45:10,490 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:45:10,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 11:45:10,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1834, Unknown=0, NotChecked=0, Total=1980 [2022-02-15 11:45:10,491 INFO L87 Difference]: Start difference. First operand 7767 states and 23773 transitions. Second operand has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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) [2022-02-15 11:45:11,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:45:11,377 INFO L93 Difference]: Finished difference Result 9767 states and 29991 transitions. [2022-02-15 11:45:11,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-15 11:45:11,377 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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 168 [2022-02-15 11:45:11,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:45:11,396 INFO L225 Difference]: With dead ends: 9767 [2022-02-15 11:45:11,396 INFO L226 Difference]: Without dead ends: 9212 [2022-02-15 11:45:11,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 975 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=373, Invalid=3917, Unknown=0, NotChecked=0, Total=4290 [2022-02-15 11:45:11,397 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 879 mSDsluCounter, 2516 mSDsCounter, 0 mSdLazyCounter, 928 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 2457 SdHoareTripleChecker+Invalid, 1068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 93 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 11:45:11,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [879 Valid, 2457 Invalid, 1068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 928 Invalid, 0 Unknown, 93 Unchecked, 0.3s Time] [2022-02-15 11:45:11,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9212 states. [2022-02-15 11:45:11,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9212 to 8316. [2022-02-15 11:45:11,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8316 states, 8315 states have (on average 3.0424533974744437) internal successors, (25298), 8315 states have internal predecessors, (25298), 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) [2022-02-15 11:45:11,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8316 states to 8316 states and 25298 transitions. [2022-02-15 11:45:11,538 INFO L78 Accepts]: Start accepts. Automaton has 8316 states and 25298 transitions. Word has length 168 [2022-02-15 11:45:11,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:45:11,538 INFO L470 AbstractCegarLoop]: Abstraction has 8316 states and 25298 transitions. [2022-02-15 11:45:11,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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) [2022-02-15 11:45:11,538 INFO L276 IsEmpty]: Start isEmpty. Operand 8316 states and 25298 transitions. [2022-02-15 11:45:11,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:45:11,551 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:45:11,551 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:45:11,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-02-15 11:45:11,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2022-02-15 11:45:11,752 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:45:11,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:45:11,753 INFO L85 PathProgramCache]: Analyzing trace with hash 196172355, now seen corresponding path program 76 times [2022-02-15 11:45:11,753 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:45:11,753 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013708702] [2022-02-15 11:45:11,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:45:11,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:45:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:45:12,436 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:45:12,436 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:45:12,436 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013708702] [2022-02-15 11:45:12,436 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013708702] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:45:12,436 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856204138] [2022-02-15 11:45:12,437 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 11:45:12,437 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:45:12,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:45:12,438 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:45:12,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-02-15 11:45:12,608 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 11:45:12,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:45:12,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 59 conjunts are in the unsatisfiable core [2022-02-15 11:45:12,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:45:14,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-15 11:45:14,251 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2022-02-15 11:45:14,518 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:45:14,518 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 32 [2022-02-15 11:45:14,551 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:45:14,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:45:15,119 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:45:15,119 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 156 treesize of output 164 [2022-02-15 11:45:15,130 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:45:15,130 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 42 [2022-02-15 11:45:22,162 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:45:22,163 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856204138] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 11:45:22,163 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 11:45:22,163 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 33, 33] total 86 [2022-02-15 11:45:22,163 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573983629] [2022-02-15 11:45:22,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 11:45:22,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-02-15 11:45:22,163 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:45:22,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-02-15 11:45:22,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=412, Invalid=6867, Unknown=31, NotChecked=0, Total=7310 [2022-02-15 11:45:22,164 INFO L87 Difference]: Start difference. First operand 8316 states and 25298 transitions. Second operand has 86 states, 86 states have (on average 4.883720930232558) internal successors, (420), 86 states have internal predecessors, (420), 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) [2022-02-15 11:45:31,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:45:31,278 INFO L93 Difference]: Finished difference Result 20788 states and 62962 transitions. [2022-02-15 11:45:31,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-02-15 11:45:31,278 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 4.883720930232558) internal successors, (420), 86 states have internal predecessors, (420), 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 168 [2022-02-15 11:45:31,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:45:31,325 INFO L225 Difference]: With dead ends: 20788 [2022-02-15 11:45:31,325 INFO L226 Difference]: Without dead ends: 18321 [2022-02-15 11:45:31,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 285 SyntacticMatches, 6 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 5451 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=3499, Invalid=21237, Unknown=70, NotChecked=0, Total=24806 [2022-02-15 11:45:31,327 INFO L933 BasicCegarLoop]: 269 mSDtfsCounter, 6658 mSDsluCounter, 11983 mSDsCounter, 0 mSdLazyCounter, 4542 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6658 SdHoareTripleChecker+Valid, 10248 SdHoareTripleChecker+Invalid, 7521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 4542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2662 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-02-15 11:45:31,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6658 Valid, 10248 Invalid, 7521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 4542 Invalid, 0 Unknown, 2662 Unchecked, 2.0s Time] [2022-02-15 11:45:31,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18321 states. [2022-02-15 11:45:31,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18321 to 9584. [2022-02-15 11:45:31,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9584 states, 9583 states have (on average 3.0121047688615255) internal successors, (28865), 9583 states have internal predecessors, (28865), 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) [2022-02-15 11:45:31,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9584 states to 9584 states and 28865 transitions. [2022-02-15 11:45:31,572 INFO L78 Accepts]: Start accepts. Automaton has 9584 states and 28865 transitions. Word has length 168 [2022-02-15 11:45:31,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:45:31,572 INFO L470 AbstractCegarLoop]: Abstraction has 9584 states and 28865 transitions. [2022-02-15 11:45:31,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 4.883720930232558) internal successors, (420), 86 states have internal predecessors, (420), 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) [2022-02-15 11:45:31,572 INFO L276 IsEmpty]: Start isEmpty. Operand 9584 states and 28865 transitions. [2022-02-15 11:45:31,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:45:31,587 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:45:31,587 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:45:31,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2022-02-15 11:45:31,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:45:31,788 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:45:31,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:45:31,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1170740605, now seen corresponding path program 77 times [2022-02-15 11:45:31,788 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:45:31,788 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883335086] [2022-02-15 11:45:31,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:45:31,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:45:31,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:45:32,456 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:45:32,456 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:45:32,456 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883335086] [2022-02-15 11:45:32,457 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883335086] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:45:32,457 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183395630] [2022-02-15 11:45:32,457 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 11:45:32,457 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:45:32,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:45:32,460 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:45:32,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-02-15 11:45:32,641 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-15 11:45:32,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:45:32,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-15 11:45:32,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:45:32,674 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-15 11:45:32,756 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-15 11:45:32,756 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-15 11:45:33,322 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 26 [2022-02-15 11:45:33,437 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:45:33,437 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:45:33,456 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-15 11:45:33,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:45:33,524 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2716 (Array Int Int))) (= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_2716) c_~f~0.base))) (select .cse0 (+ c_~f~0.offset (* (select .cse0 (+ c_~f~0.offset (* c_~j~0 4))) 4)))) c_~i~0)) is different from false [2022-02-15 11:45:33,544 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2716 (Array Int Int))) (= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_2716) c_~f~0.base))) (select .cse0 (+ c_~f~0.offset (* (select .cse0 (+ c_~f~0.offset (* c_~j~0 4))) 4)))) (select (select |c_#memory_int| c_~f~0.base) (+ c_~f~0.offset (* c_~i1~0 4))))) is different from false [2022-02-15 11:45:33,552 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2716 (Array Int Int))) (= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_2716) c_~f~0.base))) (select .cse0 (+ c_~f~0.offset (* (select .cse0 (+ c_~f~0.offset (* c_~j~0 4))) 4)))) (select (select |c_#memory_int| c_~f~0.base) (+ c_~f~0.offset (* c_~i~0 4))))) is different from false [2022-02-15 11:45:33,592 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:45:33,593 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 116 [2022-02-15 11:45:33,602 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:45:33,602 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 34 [2022-02-15 11:45:34,170 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:45:34,171 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183395630] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-15 11:45:34,171 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-15 11:45:34,171 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [29, 22] total 53 [2022-02-15 11:45:34,171 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935423016] [2022-02-15 11:45:34,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:45:34,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 11:45:34,171 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:45:34,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 11:45:34,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=2289, Unknown=3, NotChecked=294, Total=2756 [2022-02-15 11:45:34,172 INFO L87 Difference]: Start difference. First operand 9584 states and 28865 transitions. Second operand has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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) [2022-02-15 11:45:35,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:45:35,020 INFO L93 Difference]: Finished difference Result 12221 states and 36677 transitions. [2022-02-15 11:45:35,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-15 11:45:35,020 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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 168 [2022-02-15 11:45:35,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:45:35,042 INFO L225 Difference]: With dead ends: 12221 [2022-02-15 11:45:35,043 INFO L226 Difference]: Without dead ends: 10537 [2022-02-15 11:45:35,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 313 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 1052 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=387, Invalid=4314, Unknown=3, NotChecked=408, Total=5112 [2022-02-15 11:45:35,044 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 918 mSDsluCounter, 1746 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 1766 SdHoareTripleChecker+Invalid, 1479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 783 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 11:45:35,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [918 Valid, 1766 Invalid, 1479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 654 Invalid, 0 Unknown, 783 Unchecked, 0.3s Time] [2022-02-15 11:45:35,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10537 states. [2022-02-15 11:45:35,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10537 to 9588. [2022-02-15 11:45:35,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9588 states, 9587 states have (on average 3.0101178679461773) internal successors, (28858), 9587 states have internal predecessors, (28858), 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) [2022-02-15 11:45:35,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9588 states to 9588 states and 28858 transitions. [2022-02-15 11:45:35,217 INFO L78 Accepts]: Start accepts. Automaton has 9588 states and 28858 transitions. Word has length 168 [2022-02-15 11:45:35,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:45:35,217 INFO L470 AbstractCegarLoop]: Abstraction has 9588 states and 28858 transitions. [2022-02-15 11:45:35,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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) [2022-02-15 11:45:35,217 INFO L276 IsEmpty]: Start isEmpty. Operand 9588 states and 28858 transitions. [2022-02-15 11:45:35,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:45:35,233 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:45:35,233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:45:35,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-02-15 11:45:35,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:45:35,434 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:45:35,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:45:35,434 INFO L85 PathProgramCache]: Analyzing trace with hash -290495389, now seen corresponding path program 78 times [2022-02-15 11:45:35,434 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:45:35,434 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851300069] [2022-02-15 11:45:35,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:45:35,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:45:35,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:45:36,159 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:45:36,159 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:45:36,159 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851300069] [2022-02-15 11:45:36,159 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851300069] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:45:36,159 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681535558] [2022-02-15 11:45:36,159 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 11:45:36,160 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:45:36,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:45:36,161 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:45:36,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-02-15 11:45:36,355 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-02-15 11:45:36,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:45:36,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 38 conjunts are in the unsatisfiable core [2022-02-15 11:45:36,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:45:36,388 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-15 11:45:36,452 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-15 11:45:36,452 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-15 11:45:36,977 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 26 [2022-02-15 11:45:37,095 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:45:37,096 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:45:37,115 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:45:37,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 11:45:37,116 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681535558] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:45:37,116 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 11:45:37,116 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [30] total 44 [2022-02-15 11:45:37,116 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269525379] [2022-02-15 11:45:37,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:45:37,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 11:45:37,116 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:45:37,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 11:45:37,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1753, Unknown=0, NotChecked=0, Total=1892 [2022-02-15 11:45:37,117 INFO L87 Difference]: Start difference. First operand 9588 states and 28858 transitions. Second operand has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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) [2022-02-15 11:45:38,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:45:38,082 INFO L93 Difference]: Finished difference Result 10997 states and 33227 transitions. [2022-02-15 11:45:38,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-15 11:45:38,083 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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 168 [2022-02-15 11:45:38,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:45:38,103 INFO L225 Difference]: With dead ends: 10997 [2022-02-15 11:45:38,103 INFO L226 Difference]: Without dead ends: 9407 [2022-02-15 11:45:38,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 965 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=366, Invalid=3924, Unknown=0, NotChecked=0, Total=4290 [2022-02-15 11:45:38,103 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 795 mSDsluCounter, 2906 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 2778 SdHoareTripleChecker+Invalid, 1338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 219 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 11:45:38,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [795 Valid, 2778 Invalid, 1338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1075 Invalid, 0 Unknown, 219 Unchecked, 0.4s Time] [2022-02-15 11:45:38,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9407 states. [2022-02-15 11:45:38,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9407 to 7817. [2022-02-15 11:45:38,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7817 states, 7816 states have (on average 3.0550153531218016) internal successors, (23878), 7816 states have internal predecessors, (23878), 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) [2022-02-15 11:45:38,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7817 states to 7817 states and 23878 transitions. [2022-02-15 11:45:38,247 INFO L78 Accepts]: Start accepts. Automaton has 7817 states and 23878 transitions. Word has length 168 [2022-02-15 11:45:38,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:45:38,248 INFO L470 AbstractCegarLoop]: Abstraction has 7817 states and 23878 transitions. [2022-02-15 11:45:38,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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) [2022-02-15 11:45:38,248 INFO L276 IsEmpty]: Start isEmpty. Operand 7817 states and 23878 transitions. [2022-02-15 11:45:38,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:45:38,261 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:45:38,261 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:45:38,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-02-15 11:45:38,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2022-02-15 11:45:38,462 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:45:38,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:45:38,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1175730899, now seen corresponding path program 79 times [2022-02-15 11:45:38,462 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:45:38,462 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088291087] [2022-02-15 11:45:38,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:45:38,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:45:38,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:45:39,120 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:45:39,120 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:45:39,120 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088291087] [2022-02-15 11:45:39,120 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088291087] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:45:39,121 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473992197] [2022-02-15 11:45:39,121 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 11:45:39,121 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:45:39,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:45:39,122 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:45:39,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-02-15 11:45:39,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:45:39,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 59 conjunts are in the unsatisfiable core [2022-02-15 11:45:39,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:45:40,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-15 11:45:40,825 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 38 [2022-02-15 11:45:41,189 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:45:41,189 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 32 [2022-02-15 11:45:41,224 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:45:41,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:45:41,749 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:45:41,750 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 154 treesize of output 170 [2022-02-15 11:45:41,769 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:45:41,769 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 70 [2022-02-15 11:46:18,011 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:46:18,011 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473992197] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 11:46:18,011 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 11:46:18,012 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 33, 33] total 85 [2022-02-15 11:46:18,012 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79069988] [2022-02-15 11:46:18,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 11:46:18,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2022-02-15 11:46:18,012 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:46:18,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2022-02-15 11:46:18,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=393, Invalid=6725, Unknown=22, NotChecked=0, Total=7140 [2022-02-15 11:46:18,013 INFO L87 Difference]: Start difference. First operand 7817 states and 23878 transitions. Second operand has 85 states, 85 states have (on average 4.894117647058824) internal successors, (416), 85 states have internal predecessors, (416), 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) [2022-02-15 11:46:28,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:46:28,069 INFO L93 Difference]: Finished difference Result 18085 states and 55454 transitions. [2022-02-15 11:46:28,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-02-15 11:46:28,070 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 4.894117647058824) internal successors, (416), 85 states have internal predecessors, (416), 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 168 [2022-02-15 11:46:28,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:46:28,105 INFO L225 Difference]: With dead ends: 18085 [2022-02-15 11:46:28,105 INFO L226 Difference]: Without dead ends: 16293 [2022-02-15 11:46:28,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 285 SyntacticMatches, 18 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5876 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=3616, Invalid=21792, Unknown=32, NotChecked=0, Total=25440 [2022-02-15 11:46:28,107 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 6353 mSDsluCounter, 11990 mSDsCounter, 0 mSdLazyCounter, 5216 mSolverCounterSat, 297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6353 SdHoareTripleChecker+Valid, 10655 SdHoareTripleChecker+Invalid, 7246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 5216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1733 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-02-15 11:46:28,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6353 Valid, 10655 Invalid, 7246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 5216 Invalid, 0 Unknown, 1733 Unchecked, 2.2s Time] [2022-02-15 11:46:28,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16293 states. [2022-02-15 11:46:28,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16293 to 8800. [2022-02-15 11:46:28,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8800 states, 8799 states have (on average 3.0240936470053414) internal successors, (26609), 8799 states have internal predecessors, (26609), 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) [2022-02-15 11:46:28,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8800 states to 8800 states and 26609 transitions. [2022-02-15 11:46:28,353 INFO L78 Accepts]: Start accepts. Automaton has 8800 states and 26609 transitions. Word has length 168 [2022-02-15 11:46:28,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:46:28,353 INFO L470 AbstractCegarLoop]: Abstraction has 8800 states and 26609 transitions. [2022-02-15 11:46:28,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 4.894117647058824) internal successors, (416), 85 states have internal predecessors, (416), 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) [2022-02-15 11:46:28,353 INFO L276 IsEmpty]: Start isEmpty. Operand 8800 states and 26609 transitions. [2022-02-15 11:46:28,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:46:28,366 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:46:28,366 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:46:28,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-02-15 11:46:28,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:46:28,567 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:46:28,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:46:28,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1695670313, now seen corresponding path program 80 times [2022-02-15 11:46:28,567 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:46:28,567 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300902097] [2022-02-15 11:46:28,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:46:28,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:46:28,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:46:29,198 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:46:29,198 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:46:29,198 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300902097] [2022-02-15 11:46:29,198 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300902097] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:46:29,198 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540658683] [2022-02-15 11:46:29,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 11:46:29,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:46:29,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:46:29,199 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:46:29,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-02-15 11:46:29,397 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-02-15 11:46:29,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:46:29,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 38 conjunts are in the unsatisfiable core [2022-02-15 11:46:29,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:46:29,429 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-15 11:46:29,519 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-15 11:46:29,519 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-15 11:46:29,972 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:46:30,116 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:46:30,117 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:46:30,142 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:46:30,142 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 11:46:30,142 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540658683] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:46:30,142 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 11:46:30,142 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [29] total 44 [2022-02-15 11:46:30,143 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612932265] [2022-02-15 11:46:30,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:46:30,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 11:46:30,143 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:46:30,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 11:46:30,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1761, Unknown=0, NotChecked=0, Total=1892 [2022-02-15 11:46:30,143 INFO L87 Difference]: Start difference. First operand 8800 states and 26609 transitions. Second operand has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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) [2022-02-15 11:46:30,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:46:30,956 INFO L93 Difference]: Finished difference Result 10650 states and 32383 transitions. [2022-02-15 11:46:30,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-15 11:46:30,956 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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 168 [2022-02-15 11:46:30,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:46:30,974 INFO L225 Difference]: With dead ends: 10650 [2022-02-15 11:46:30,975 INFO L226 Difference]: Without dead ends: 9616 [2022-02-15 11:46:30,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 155 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=379, Invalid=3781, Unknown=0, NotChecked=0, Total=4160 [2022-02-15 11:46:30,975 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 848 mSDsluCounter, 2320 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 2244 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 305 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 11:46:30,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [848 Valid, 2244 Invalid, 1084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 734 Invalid, 0 Unknown, 305 Unchecked, 0.3s Time] [2022-02-15 11:46:30,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9616 states. [2022-02-15 11:46:31,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9616 to 7817. [2022-02-15 11:46:31,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7817 states, 7816 states have (on average 3.0550153531218016) internal successors, (23878), 7816 states have internal predecessors, (23878), 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) [2022-02-15 11:46:31,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7817 states to 7817 states and 23878 transitions. [2022-02-15 11:46:31,104 INFO L78 Accepts]: Start accepts. Automaton has 7817 states and 23878 transitions. Word has length 168 [2022-02-15 11:46:31,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:46:31,104 INFO L470 AbstractCegarLoop]: Abstraction has 7817 states and 23878 transitions. [2022-02-15 11:46:31,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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) [2022-02-15 11:46:31,104 INFO L276 IsEmpty]: Start isEmpty. Operand 7817 states and 23878 transitions. [2022-02-15 11:46:31,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:46:31,116 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:46:31,116 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:46:31,133 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2022-02-15 11:46:31,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:46:31,317 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:46:31,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:46:31,317 INFO L85 PathProgramCache]: Analyzing trace with hash -982879023, now seen corresponding path program 81 times [2022-02-15 11:46:31,317 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:46:31,317 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856711462] [2022-02-15 11:46:31,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:46:31,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:46:31,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:46:33,115 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:46:33,115 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:46:33,115 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856711462] [2022-02-15 11:46:33,116 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856711462] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:46:33,116 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14046624] [2022-02-15 11:46:33,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 11:46:33,116 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:46:33,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:46:33,117 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:46:33,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-02-15 11:46:33,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-02-15 11:46:33,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:46:33,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 36 conjunts are in the unsatisfiable core [2022-02-15 11:46:33,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:46:33,329 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-15 11:46:33,413 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-15 11:46:33,413 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-15 11:46:33,933 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:46:34,080 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:46:34,080 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:46:34,113 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:46:34,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 11:46:34,113 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14046624] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:46:34,113 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 11:46:34,113 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [36] total 51 [2022-02-15 11:46:34,113 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232283624] [2022-02-15 11:46:34,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:46:34,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 11:46:34,113 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:46:34,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 11:46:34,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=2390, Unknown=0, NotChecked=0, Total=2550 [2022-02-15 11:46:34,114 INFO L87 Difference]: Start difference. First operand 7817 states and 23878 transitions. Second operand has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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) [2022-02-15 11:46:34,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:46:34,889 INFO L93 Difference]: Finished difference Result 9173 states and 28091 transitions. [2022-02-15 11:46:34,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-15 11:46:34,890 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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 168 [2022-02-15 11:46:34,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:46:34,907 INFO L225 Difference]: With dead ends: 9173 [2022-02-15 11:46:34,907 INFO L226 Difference]: Without dead ends: 8753 [2022-02-15 11:46:34,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 987 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=373, Invalid=4597, Unknown=0, NotChecked=0, Total=4970 [2022-02-15 11:46:34,908 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 835 mSDsluCounter, 2204 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 2156 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 199 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 11:46:34,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [835 Valid, 2156 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 684 Invalid, 0 Unknown, 199 Unchecked, 0.2s Time] [2022-02-15 11:46:34,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8753 states. [2022-02-15 11:46:34,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8753 to 7857. [2022-02-15 11:46:35,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7857 states, 7856 states have (on average 3.0478615071283097) internal successors, (23944), 7856 states have internal predecessors, (23944), 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) [2022-02-15 11:46:35,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7857 states to 7857 states and 23944 transitions. [2022-02-15 11:46:35,018 INFO L78 Accepts]: Start accepts. Automaton has 7857 states and 23944 transitions. Word has length 168 [2022-02-15 11:46:35,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:46:35,018 INFO L470 AbstractCegarLoop]: Abstraction has 7857 states and 23944 transitions. [2022-02-15 11:46:35,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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) [2022-02-15 11:46:35,018 INFO L276 IsEmpty]: Start isEmpty. Operand 7857 states and 23944 transitions. [2022-02-15 11:46:35,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:46:35,029 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:46:35,029 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:46:35,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-02-15 11:46:35,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:46:35,230 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:46:35,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:46:35,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1661539277, now seen corresponding path program 82 times [2022-02-15 11:46:35,230 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:46:35,230 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102787122] [2022-02-15 11:46:35,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:46:35,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:46:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:46:36,058 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:46:36,058 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:46:36,058 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102787122] [2022-02-15 11:46:36,058 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102787122] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:46:36,058 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106739719] [2022-02-15 11:46:36,058 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 11:46:36,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:46:36,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:46:36,059 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:46:36,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-02-15 11:46:36,236 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 11:46:36,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:46:36,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 66 conjunts are in the unsatisfiable core [2022-02-15 11:46:36,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:46:36,268 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-15 11:46:36,421 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-15 11:46:36,422 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-15 11:46:37,619 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 38 [2022-02-15 11:46:37,935 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:46:37,936 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 32 [2022-02-15 11:46:37,981 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:46:37,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:46:38,430 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:46:38,431 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 154 treesize of output 170 [2022-02-15 11:46:38,449 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:46:38,450 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 70 [2022-02-15 11:46:44,471 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:46:44,471 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106739719] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 11:46:44,471 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 11:46:44,471 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 33, 33] total 85 [2022-02-15 11:46:44,471 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649812399] [2022-02-15 11:46:44,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 11:46:44,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2022-02-15 11:46:44,472 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:46:44,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2022-02-15 11:46:44,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=470, Invalid=6648, Unknown=22, NotChecked=0, Total=7140 [2022-02-15 11:46:44,473 INFO L87 Difference]: Start difference. First operand 7857 states and 23944 transitions. Second operand has 85 states, 85 states have (on average 4.552941176470588) internal successors, (387), 85 states have internal predecessors, (387), 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) [2022-02-15 11:46:52,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:46:52,561 INFO L93 Difference]: Finished difference Result 16070 states and 48725 transitions. [2022-02-15 11:46:52,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-02-15 11:46:52,561 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 4.552941176470588) internal successors, (387), 85 states have internal predecessors, (387), 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 168 [2022-02-15 11:46:52,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:46:52,592 INFO L225 Difference]: With dead ends: 16070 [2022-02-15 11:46:52,592 INFO L226 Difference]: Without dead ends: 14563 [2022-02-15 11:46:52,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 286 SyntacticMatches, 2 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 6050 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=3691, Invalid=21725, Unknown=24, NotChecked=0, Total=25440 [2022-02-15 11:46:52,594 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 4513 mSDsluCounter, 10499 mSDsCounter, 0 mSdLazyCounter, 4728 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4513 SdHoareTripleChecker+Valid, 9293 SdHoareTripleChecker+Invalid, 6399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 4728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1429 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-02-15 11:46:52,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4513 Valid, 9293 Invalid, 6399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 4728 Invalid, 0 Unknown, 1429 Unchecked, 2.0s Time] [2022-02-15 11:46:52,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14563 states. [2022-02-15 11:46:52,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14563 to 8580. [2022-02-15 11:46:52,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8580 states, 8579 states have (on average 3.048024245250029) internal successors, (26149), 8579 states have internal predecessors, (26149), 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) [2022-02-15 11:46:52,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8580 states to 8580 states and 26149 transitions. [2022-02-15 11:46:52,838 INFO L78 Accepts]: Start accepts. Automaton has 8580 states and 26149 transitions. Word has length 168 [2022-02-15 11:46:52,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:46:52,839 INFO L470 AbstractCegarLoop]: Abstraction has 8580 states and 26149 transitions. [2022-02-15 11:46:52,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 4.552941176470588) internal successors, (387), 85 states have internal predecessors, (387), 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) [2022-02-15 11:46:52,839 INFO L276 IsEmpty]: Start isEmpty. Operand 8580 states and 26149 transitions. [2022-02-15 11:46:52,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:46:52,851 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:46:52,851 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:46:52,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-02-15 11:46:53,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable83 [2022-02-15 11:46:53,052 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:46:53,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:46:53,053 INFO L85 PathProgramCache]: Analyzing trace with hash -457049511, now seen corresponding path program 83 times [2022-02-15 11:46:53,053 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:46:53,053 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668280873] [2022-02-15 11:46:53,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:46:53,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:46:53,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:46:53,272 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:46:53,272 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:46:53,272 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668280873] [2022-02-15 11:46:53,272 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668280873] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:46:53,272 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 11:46:53,272 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-15 11:46:53,272 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828545070] [2022-02-15 11:46:53,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:46:53,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-15 11:46:53,273 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:46:53,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-15 11:46:53,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2022-02-15 11:46:53,273 INFO L87 Difference]: Start difference. First operand 8580 states and 26149 transitions. Second operand has 19 states, 19 states have (on average 8.473684210526315) internal successors, (161), 19 states have internal predecessors, (161), 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) [2022-02-15 11:46:54,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:46:54,059 INFO L93 Difference]: Finished difference Result 11422 states and 35065 transitions. [2022-02-15 11:46:54,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-15 11:46:54,060 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 8.473684210526315) internal successors, (161), 19 states have internal predecessors, (161), 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 168 [2022-02-15 11:46:54,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:46:54,079 INFO L225 Difference]: With dead ends: 11422 [2022-02-15 11:46:54,079 INFO L226 Difference]: Without dead ends: 9859 [2022-02-15 11:46:54,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=261, Invalid=1145, Unknown=0, NotChecked=0, Total=1406 [2022-02-15 11:46:54,079 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 990 mSDsluCounter, 2870 mSDsCounter, 0 mSdLazyCounter, 1287 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 2750 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 11:46:54,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [990 Valid, 2750 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1287 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 11:46:54,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9859 states. [2022-02-15 11:46:54,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9859 to 8205. [2022-02-15 11:46:54,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8205 states, 8204 states have (on average 3.0323013164310093) internal successors, (24877), 8204 states have internal predecessors, (24877), 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) [2022-02-15 11:46:54,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8205 states to 8205 states and 24877 transitions. [2022-02-15 11:46:54,221 INFO L78 Accepts]: Start accepts. Automaton has 8205 states and 24877 transitions. Word has length 168 [2022-02-15 11:46:54,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:46:54,221 INFO L470 AbstractCegarLoop]: Abstraction has 8205 states and 24877 transitions. [2022-02-15 11:46:54,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.473684210526315) internal successors, (161), 19 states have internal predecessors, (161), 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) [2022-02-15 11:46:54,221 INFO L276 IsEmpty]: Start isEmpty. Operand 8205 states and 24877 transitions. [2022-02-15 11:46:54,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:46:54,235 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:46:54,235 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:46:54,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-02-15 11:46:54,235 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:46:54,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:46:54,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1989584151, now seen corresponding path program 84 times [2022-02-15 11:46:54,236 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:46:54,236 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634181513] [2022-02-15 11:46:54,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:46:54,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:46:54,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:46:56,131 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:46:56,131 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:46:56,131 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634181513] [2022-02-15 11:46:56,131 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634181513] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:46:56,131 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156444313] [2022-02-15 11:46:56,132 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 11:46:56,132 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:46:56,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:46:56,133 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:46:56,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-02-15 11:46:56,317 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-02-15 11:46:56,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:46:56,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-15 11:46:56,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:46:56,782 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:46:56,782 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:46:56,813 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:46:56,813 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 11:46:56,814 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156444313] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:46:56,814 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 11:46:56,814 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [38] total 45 [2022-02-15 11:46:56,814 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818916362] [2022-02-15 11:46:56,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:46:56,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 11:46:56,814 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:46:56,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 11:46:56,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1856, Unknown=0, NotChecked=0, Total=1980 [2022-02-15 11:46:56,815 INFO L87 Difference]: Start difference. First operand 8205 states and 24877 transitions. Second operand has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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) [2022-02-15 11:46:57,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:46:57,415 INFO L93 Difference]: Finished difference Result 12323 states and 37899 transitions. [2022-02-15 11:46:57,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-15 11:46:57,416 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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 168 [2022-02-15 11:46:57,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:46:57,440 INFO L225 Difference]: With dead ends: 12323 [2022-02-15 11:46:57,440 INFO L226 Difference]: Without dead ends: 11627 [2022-02-15 11:46:57,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=186, Invalid=3006, Unknown=0, NotChecked=0, Total=3192 [2022-02-15 11:46:57,440 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 173 mSDsluCounter, 2335 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 2299 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 159 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 11:46:57,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 2299 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 709 Invalid, 0 Unknown, 159 Unchecked, 0.3s Time] [2022-02-15 11:46:57,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11627 states. [2022-02-15 11:46:57,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11627 to 8568. [2022-02-15 11:46:57,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8568 states, 8567 states have (on average 3.048324967900082) internal successors, (26115), 8567 states have internal predecessors, (26115), 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) [2022-02-15 11:46:57,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8568 states to 8568 states and 26115 transitions. [2022-02-15 11:46:57,604 INFO L78 Accepts]: Start accepts. Automaton has 8568 states and 26115 transitions. Word has length 168 [2022-02-15 11:46:57,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:46:57,604 INFO L470 AbstractCegarLoop]: Abstraction has 8568 states and 26115 transitions. [2022-02-15 11:46:57,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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) [2022-02-15 11:46:57,604 INFO L276 IsEmpty]: Start isEmpty. Operand 8568 states and 26115 transitions. [2022-02-15 11:46:57,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:46:57,618 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:46:57,618 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:46:57,635 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2022-02-15 11:46:57,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:46:57,818 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:46:57,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:46:57,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1079251809, now seen corresponding path program 85 times [2022-02-15 11:46:57,819 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:46:57,819 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367556461] [2022-02-15 11:46:57,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:46:57,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:46:57,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:46:59,028 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:46:59,028 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:46:59,028 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367556461] [2022-02-15 11:46:59,028 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367556461] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:46:59,028 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337441510] [2022-02-15 11:46:59,028 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 11:46:59,028 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:46:59,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:46:59,029 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:46:59,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-02-15 11:46:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:46:59,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 56 conjunts are in the unsatisfiable core [2022-02-15 11:46:59,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:47:00,866 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:47:00,866 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 28 [2022-02-15 11:47:00,903 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:47:00,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:47:01,254 INFO L353 Elim1Store]: treesize reduction 14, result has 80.8 percent of original size [2022-02-15 11:47:01,254 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 80 treesize of output 90 [2022-02-15 11:47:01,855 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:47:01,855 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337441510] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-15 11:47:01,855 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-15 11:47:01,855 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [37, 31] total 76 [2022-02-15 11:47:01,855 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209236858] [2022-02-15 11:47:01,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:47:01,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 11:47:01,855 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:47:01,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 11:47:01,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=420, Invalid=5280, Unknown=0, NotChecked=0, Total=5700 [2022-02-15 11:47:01,857 INFO L87 Difference]: Start difference. First operand 8568 states and 26115 transitions. Second operand has 18 states, 18 states have (on average 8.944444444444445) internal successors, (161), 18 states have internal predecessors, (161), 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) [2022-02-15 11:47:02,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:47:02,721 INFO L93 Difference]: Finished difference Result 10811 states and 33373 transitions. [2022-02-15 11:47:02,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 11:47:02,722 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.944444444444445) internal successors, (161), 18 states have internal predecessors, (161), 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 168 [2022-02-15 11:47:02,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:47:02,742 INFO L225 Difference]: With dead ends: 10811 [2022-02-15 11:47:02,742 INFO L226 Difference]: Without dead ends: 10456 [2022-02-15 11:47:02,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2345 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=538, Invalid=6772, Unknown=0, NotChecked=0, Total=7310 [2022-02-15 11:47:02,743 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 520 mSDsluCounter, 2395 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 2313 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 11:47:02,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [520 Valid, 2313 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 11:47:02,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10456 states. [2022-02-15 11:47:02,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10456 to 8896. [2022-02-15 11:47:02,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8896 states, 8895 states have (on average 3.0620573355817875) internal successors, (27237), 8895 states have internal predecessors, (27237), 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) [2022-02-15 11:47:02,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8896 states to 8896 states and 27237 transitions. [2022-02-15 11:47:02,885 INFO L78 Accepts]: Start accepts. Automaton has 8896 states and 27237 transitions. Word has length 168 [2022-02-15 11:47:02,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:47:02,885 INFO L470 AbstractCegarLoop]: Abstraction has 8896 states and 27237 transitions. [2022-02-15 11:47:02,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.944444444444445) internal successors, (161), 18 states have internal predecessors, (161), 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) [2022-02-15 11:47:02,885 INFO L276 IsEmpty]: Start isEmpty. Operand 8896 states and 27237 transitions. [2022-02-15 11:47:02,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:47:02,898 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:47:02,898 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:47:02,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-02-15 11:47:03,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:47:03,099 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:47:03,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:47:03,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1986650343, now seen corresponding path program 86 times [2022-02-15 11:47:03,100 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:47:03,100 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841084780] [2022-02-15 11:47:03,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:47:03,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:47:03,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:47:03,690 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:47:03,690 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:47:03,690 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841084780] [2022-02-15 11:47:03,690 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841084780] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:47:03,690 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046658111] [2022-02-15 11:47:03,690 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 11:47:03,690 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:47:03,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:47:03,691 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:47:03,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-02-15 11:47:03,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-02-15 11:47:03,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:47:03,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-15 11:47:03,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:47:04,269 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:47:04,269 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:47:04,302 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:47:04,302 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 11:47:04,302 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046658111] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:47:04,302 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 11:47:04,302 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [28] total 35 [2022-02-15 11:47:04,303 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713936038] [2022-02-15 11:47:04,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:47:04,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 11:47:04,303 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:47:04,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 11:47:04,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2022-02-15 11:47:04,303 INFO L87 Difference]: Start difference. First operand 8896 states and 27237 transitions. Second operand has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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) [2022-02-15 11:47:04,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:47:04,631 INFO L93 Difference]: Finished difference Result 12019 states and 37078 transitions. [2022-02-15 11:47:04,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 11:47:04,632 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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 168 [2022-02-15 11:47:04,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:47:04,656 INFO L225 Difference]: With dead ends: 12019 [2022-02-15 11:47:04,656 INFO L226 Difference]: Without dead ends: 11700 [2022-02-15 11:47:04,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=131, Invalid=1675, Unknown=0, NotChecked=0, Total=1806 [2022-02-15 11:47:04,657 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 133 mSDsluCounter, 1873 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 1900 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 180 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 11:47:04,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 1900 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 386 Invalid, 0 Unknown, 180 Unchecked, 0.1s Time] [2022-02-15 11:47:04,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11700 states. [2022-02-15 11:47:04,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11700 to 8964. [2022-02-15 11:47:04,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8964 states, 8963 states have (on average 3.0627022202387595) internal successors, (27451), 8963 states have internal predecessors, (27451), 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) [2022-02-15 11:47:04,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8964 states to 8964 states and 27451 transitions. [2022-02-15 11:47:04,823 INFO L78 Accepts]: Start accepts. Automaton has 8964 states and 27451 transitions. Word has length 168 [2022-02-15 11:47:04,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:47:04,823 INFO L470 AbstractCegarLoop]: Abstraction has 8964 states and 27451 transitions. [2022-02-15 11:47:04,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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) [2022-02-15 11:47:04,823 INFO L276 IsEmpty]: Start isEmpty. Operand 8964 states and 27451 transitions. [2022-02-15 11:47:04,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:47:04,837 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:47:04,837 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:47:04,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-02-15 11:47:05,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:47:05,038 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:47:05,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:47:05,038 INFO L85 PathProgramCache]: Analyzing trace with hash 977386945, now seen corresponding path program 87 times [2022-02-15 11:47:05,038 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:47:05,038 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830459542] [2022-02-15 11:47:05,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:47:05,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:47:05,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:47:05,559 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:47:05,559 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:47:05,559 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830459542] [2022-02-15 11:47:05,560 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830459542] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:47:05,560 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241562801] [2022-02-15 11:47:05,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 11:47:05,560 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:47:05,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:47:05,562 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:47:05,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-02-15 11:47:05,750 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-02-15 11:47:05,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:47:05,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-15 11:47:05,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:47:06,148 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:47:06,148 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:47:06,181 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:47:06,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 11:47:06,182 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241562801] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:47:06,182 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 11:47:06,182 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [28] total 35 [2022-02-15 11:47:06,182 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971131478] [2022-02-15 11:47:06,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:47:06,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 11:47:06,182 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:47:06,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 11:47:06,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1098, Unknown=0, NotChecked=0, Total=1190 [2022-02-15 11:47:06,183 INFO L87 Difference]: Start difference. First operand 8964 states and 27451 transitions. Second operand has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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) [2022-02-15 11:47:06,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:47:06,526 INFO L93 Difference]: Finished difference Result 12145 states and 37425 transitions. [2022-02-15 11:47:06,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 11:47:06,526 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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 168 [2022-02-15 11:47:06,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:47:06,552 INFO L225 Difference]: With dead ends: 12145 [2022-02-15 11:47:06,552 INFO L226 Difference]: Without dead ends: 11726 [2022-02-15 11:47:06,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=137, Invalid=1755, Unknown=0, NotChecked=0, Total=1892 [2022-02-15 11:47:06,553 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 152 mSDsluCounter, 1964 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1957 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 302 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 11:47:06,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 1957 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 385 Invalid, 0 Unknown, 302 Unchecked, 0.1s Time] [2022-02-15 11:47:06,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11726 states. [2022-02-15 11:47:06,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11726 to 9383. [2022-02-15 11:47:06,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9383 states, 9382 states have (on average 3.0571306757620977) internal successors, (28682), 9382 states have internal predecessors, (28682), 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) [2022-02-15 11:47:06,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9383 states to 9383 states and 28682 transitions. [2022-02-15 11:47:06,772 INFO L78 Accepts]: Start accepts. Automaton has 9383 states and 28682 transitions. Word has length 168 [2022-02-15 11:47:06,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:47:06,773 INFO L470 AbstractCegarLoop]: Abstraction has 9383 states and 28682 transitions. [2022-02-15 11:47:06,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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) [2022-02-15 11:47:06,773 INFO L276 IsEmpty]: Start isEmpty. Operand 9383 states and 28682 transitions. [2022-02-15 11:47:06,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:47:06,787 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:47:06,787 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:47:06,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-02-15 11:47:06,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2022-02-15 11:47:06,988 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:47:06,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:47:06,989 INFO L85 PathProgramCache]: Analyzing trace with hash -690539423, now seen corresponding path program 88 times [2022-02-15 11:47:06,989 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:47:06,989 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751235046] [2022-02-15 11:47:06,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:47:06,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:47:07,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:47:07,489 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:47:07,489 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:47:07,489 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751235046] [2022-02-15 11:47:07,489 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751235046] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:47:07,489 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765957519] [2022-02-15 11:47:07,489 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 11:47:07,489 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:47:07,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:47:07,490 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:47:07,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-02-15 11:47:07,679 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 11:47:07,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:47:07,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 59 conjunts are in the unsatisfiable core [2022-02-15 11:47:07,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:47:09,514 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-15 11:47:09,528 INFO L353 Elim1Store]: treesize reduction 35, result has 32.7 percent of original size [2022-02-15 11:47:09,528 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 39 [2022-02-15 11:47:09,562 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:47:09,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:47:09,901 INFO L353 Elim1Store]: treesize reduction 14, result has 80.8 percent of original size [2022-02-15 11:47:09,901 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 80 treesize of output 90 [2022-02-15 11:47:10,464 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:47:10,465 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765957519] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-15 11:47:10,465 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-15 11:47:10,465 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [28, 32] total 63 [2022-02-15 11:47:10,465 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543943308] [2022-02-15 11:47:10,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:47:10,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 11:47:10,465 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:47:10,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 11:47:10,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=3613, Unknown=0, NotChecked=0, Total=3906 [2022-02-15 11:47:10,466 INFO L87 Difference]: Start difference. First operand 9383 states and 28682 transitions. Second operand has 18 states, 18 states have (on average 8.944444444444445) internal successors, (161), 18 states have internal predecessors, (161), 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) [2022-02-15 11:47:11,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:47:11,197 INFO L93 Difference]: Finished difference Result 12720 states and 39171 transitions. [2022-02-15 11:47:11,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 11:47:11,198 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.944444444444445) internal successors, (161), 18 states have internal predecessors, (161), 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 168 [2022-02-15 11:47:11,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:47:11,222 INFO L225 Difference]: With dead ends: 12720 [2022-02-15 11:47:11,222 INFO L226 Difference]: Without dead ends: 11754 [2022-02-15 11:47:11,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 301 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1473 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=391, Invalid=4721, Unknown=0, NotChecked=0, Total=5112 [2022-02-15 11:47:11,223 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 437 mSDsluCounter, 2244 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 2196 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 11:47:11,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [437 Valid, 2196 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1026 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 11:47:11,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11754 states. [2022-02-15 11:47:11,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11754 to 9287. [2022-02-15 11:47:11,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9287 states, 9286 states have (on average 3.04716777945294) internal successors, (28296), 9286 states have internal predecessors, (28296), 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) [2022-02-15 11:47:11,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9287 states to 9287 states and 28296 transitions. [2022-02-15 11:47:11,471 INFO L78 Accepts]: Start accepts. Automaton has 9287 states and 28296 transitions. Word has length 168 [2022-02-15 11:47:11,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:47:11,471 INFO L470 AbstractCegarLoop]: Abstraction has 9287 states and 28296 transitions. [2022-02-15 11:47:11,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.944444444444445) internal successors, (161), 18 states have internal predecessors, (161), 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) [2022-02-15 11:47:11,471 INFO L276 IsEmpty]: Start isEmpty. Operand 9287 states and 28296 transitions. [2022-02-15 11:47:11,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:47:11,485 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:47:11,485 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:47:11,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2022-02-15 11:47:11,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2022-02-15 11:47:11,685 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:47:11,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:47:11,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1452182283, now seen corresponding path program 89 times [2022-02-15 11:47:11,687 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:47:11,687 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940086836] [2022-02-15 11:47:11,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:47:11,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:47:11,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:47:12,168 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:47:12,169 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:47:12,169 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940086836] [2022-02-15 11:47:12,169 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940086836] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:47:12,169 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701523518] [2022-02-15 11:47:12,169 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 11:47:12,169 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:47:12,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:47:12,170 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:47:12,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-02-15 11:47:12,361 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-15 11:47:12,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:47:12,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 32 conjunts are in the unsatisfiable core [2022-02-15 11:47:12,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:47:12,805 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:47:12,805 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:47:12,837 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-15 11:47:12,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:47:13,021 INFO L353 Elim1Store]: treesize reduction 14, result has 80.8 percent of original size [2022-02-15 11:47:13,021 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 78 [2022-02-15 11:47:13,275 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:47:13,275 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701523518] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-15 11:47:13,275 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-15 11:47:13,275 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [28, 15] total 44 [2022-02-15 11:47:13,275 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024401881] [2022-02-15 11:47:13,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:47:13,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 11:47:13,275 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:47:13,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 11:47:13,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1753, Unknown=0, NotChecked=0, Total=1892 [2022-02-15 11:47:13,276 INFO L87 Difference]: Start difference. First operand 9287 states and 28296 transitions. Second operand has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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) [2022-02-15 11:47:13,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:47:13,849 INFO L93 Difference]: Finished difference Result 11594 states and 35443 transitions. [2022-02-15 11:47:13,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 11:47:13,849 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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 168 [2022-02-15 11:47:13,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:47:13,869 INFO L225 Difference]: With dead ends: 11594 [2022-02-15 11:47:13,869 INFO L226 Difference]: Without dead ends: 10048 [2022-02-15 11:47:13,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 319 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=227, Invalid=2743, Unknown=0, NotChecked=0, Total=2970 [2022-02-15 11:47:13,870 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 472 mSDsluCounter, 1587 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 1605 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 11:47:13,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [472 Valid, 1605 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 11:47:13,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10048 states. [2022-02-15 11:47:13,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10048 to 8293. [2022-02-15 11:47:13,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8293 states, 8292 states have (on average 2.9829956584659914) internal successors, (24735), 8292 states have internal predecessors, (24735), 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) [2022-02-15 11:47:14,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8293 states to 8293 states and 24735 transitions. [2022-02-15 11:47:14,014 INFO L78 Accepts]: Start accepts. Automaton has 8293 states and 24735 transitions. Word has length 168 [2022-02-15 11:47:14,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:47:14,014 INFO L470 AbstractCegarLoop]: Abstraction has 8293 states and 24735 transitions. [2022-02-15 11:47:14,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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) [2022-02-15 11:47:14,015 INFO L276 IsEmpty]: Start isEmpty. Operand 8293 states and 24735 transitions. [2022-02-15 11:47:14,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:47:14,027 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:47:14,027 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:47:14,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2022-02-15 11:47:14,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:47:14,228 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:47:14,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:47:14,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1704146873, now seen corresponding path program 90 times [2022-02-15 11:47:14,228 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:47:14,228 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041119441] [2022-02-15 11:47:14,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:47:14,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:47:14,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:47:15,373 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:47:15,373 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:47:15,373 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041119441] [2022-02-15 11:47:15,373 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041119441] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:47:15,374 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830843457] [2022-02-15 11:47:15,374 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 11:47:15,374 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:47:15,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:47:15,375 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:47:15,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-02-15 11:47:15,566 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-02-15 11:47:15,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:47:15,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-15 11:47:15,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:47:15,967 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:47:15,967 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-02-15 11:47:15,999 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:47:16,000 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 11:47:16,000 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830843457] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:47:16,000 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 11:47:16,000 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [30] total 37 [2022-02-15 11:47:16,000 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441169949] [2022-02-15 11:47:16,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:47:16,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 11:47:16,000 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:47:16,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 11:47:16,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1230, Unknown=0, NotChecked=0, Total=1332 [2022-02-15 11:47:16,001 INFO L87 Difference]: Start difference. First operand 8293 states and 24735 transitions. Second operand has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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) [2022-02-15 11:47:16,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:47:16,394 INFO L93 Difference]: Finished difference Result 11006 states and 32921 transitions. [2022-02-15 11:47:16,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-15 11:47:16,394 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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 168 [2022-02-15 11:47:16,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:47:16,414 INFO L225 Difference]: With dead ends: 11006 [2022-02-15 11:47:16,414 INFO L226 Difference]: Without dead ends: 10564 [2022-02-15 11:47:16,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 164 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=154, Invalid=2008, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 11:47:16,415 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 147 mSDsluCounter, 1890 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 1878 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 296 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 11:47:16,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 1878 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 398 Invalid, 0 Unknown, 296 Unchecked, 0.1s Time] [2022-02-15 11:47:16,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10564 states. [2022-02-15 11:47:16,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10564 to 8625. [2022-02-15 11:47:16,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8625 states, 8624 states have (on average 2.9855055658627085) internal successors, (25747), 8624 states have internal predecessors, (25747), 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) [2022-02-15 11:47:16,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8625 states to 8625 states and 25747 transitions. [2022-02-15 11:47:16,553 INFO L78 Accepts]: Start accepts. Automaton has 8625 states and 25747 transitions. Word has length 168 [2022-02-15 11:47:16,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:47:16,553 INFO L470 AbstractCegarLoop]: Abstraction has 8625 states and 25747 transitions. [2022-02-15 11:47:16,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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) [2022-02-15 11:47:16,554 INFO L276 IsEmpty]: Start isEmpty. Operand 8625 states and 25747 transitions. [2022-02-15 11:47:16,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:47:16,567 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:47:16,567 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:47:16,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2022-02-15 11:47:16,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable91 [2022-02-15 11:47:16,768 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:47:16,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:47:16,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1354798685, now seen corresponding path program 91 times [2022-02-15 11:47:16,768 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:47:16,768 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572368751] [2022-02-15 11:47:16,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:47:16,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:47:16,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:47:17,263 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:47:17,263 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:47:17,264 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572368751] [2022-02-15 11:47:17,264 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572368751] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:47:17,264 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609157481] [2022-02-15 11:47:17,264 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 11:47:17,264 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:47:17,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:47:17,265 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 11:47:17,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-02-15 11:47:17,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:47:17,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 56 conjunts are in the unsatisfiable core [2022-02-15 11:47:17,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:47:19,067 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-15 11:47:19,081 INFO L353 Elim1Store]: treesize reduction 35, result has 32.7 percent of original size [2022-02-15 11:47:19,081 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 39 [2022-02-15 11:47:19,118 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:47:19,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:47:19,450 INFO L353 Elim1Store]: treesize reduction 14, result has 80.8 percent of original size [2022-02-15 11:47:19,450 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 80 treesize of output 90 [2022-02-15 11:47:19,966 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:47:19,966 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609157481] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-15 11:47:19,967 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-15 11:47:19,967 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [28, 31] total 57 [2022-02-15 11:47:19,967 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551682135] [2022-02-15 11:47:19,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:47:19,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 11:47:19,967 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:47:19,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 11:47:19,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=337, Invalid=2855, Unknown=0, NotChecked=0, Total=3192 [2022-02-15 11:47:19,968 INFO L87 Difference]: Start difference. First operand 8625 states and 25747 transitions. Second operand has 18 states, 18 states have (on average 8.944444444444445) internal successors, (161), 18 states have internal predecessors, (161), 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) [2022-02-15 11:47:20,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:47:20,740 INFO L93 Difference]: Finished difference Result 11309 states and 33758 transitions. [2022-02-15 11:47:20,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 11:47:20,740 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.944444444444445) internal successors, (161), 18 states have internal predecessors, (161), 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 168 [2022-02-15 11:47:20,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:47:20,758 INFO L225 Difference]: With dead ends: 11309 [2022-02-15 11:47:20,758 INFO L226 Difference]: Without dead ends: 10822 [2022-02-15 11:47:20,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 307 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1444 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=463, Invalid=4093, Unknown=0, NotChecked=0, Total=4556 [2022-02-15 11:47:20,759 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 531 mSDsluCounter, 1987 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 1954 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 11:47:20,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 1954 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 11:47:20,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10822 states. [2022-02-15 11:47:20,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10822 to 8853. [2022-02-15 11:47:20,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8853 states, 8852 states have (on average 2.982828739267962) internal successors, (26404), 8852 states have internal predecessors, (26404), 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) [2022-02-15 11:47:20,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8853 states to 8853 states and 26404 transitions. [2022-02-15 11:47:20,886 INFO L78 Accepts]: Start accepts. Automaton has 8853 states and 26404 transitions. Word has length 168 [2022-02-15 11:47:20,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:47:20,886 INFO L470 AbstractCegarLoop]: Abstraction has 8853 states and 26404 transitions. [2022-02-15 11:47:20,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.944444444444445) internal successors, (161), 18 states have internal predecessors, (161), 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) [2022-02-15 11:47:20,887 INFO L276 IsEmpty]: Start isEmpty. Operand 8853 states and 26404 transitions. [2022-02-15 11:47:20,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 11:47:20,899 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:47:20,899 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:47:20,916 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2022-02-15 11:47:21,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:47:21,100 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:47:21,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:47:21,100 INFO L85 PathProgramCache]: Analyzing trace with hash -920439939, now seen corresponding path program 92 times [2022-02-15 11:47:21,100 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:47:21,100 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885040504] [2022-02-15 11:47:21,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:47:21,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:47:21,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2022-02-15 11:47:21,575 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-02-15 11:47:21,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-02-15 11:47:21,575 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 169 with TraceHistMax 2,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 24 known predicates. [2022-02-15 11:47:21,576 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-02-15 11:47:21,576 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-02-15 11:47:21,576 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-02-15 11:47:21,578 INFO L732 BasicCegarLoop]: Path program histogram: [92, 1, 1] [2022-02-15 11:47:21,579 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-15 11:47:21,579 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-15 11:47:21,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 11:47:21 BasicIcfg [2022-02-15 11:47:21,580 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-15 11:47:21,581 INFO L158 Benchmark]: Toolchain (without parser) took 724318.55ms. Allocated memory was 173.0MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 117.4MB in the beginning and 862.1MB in the end (delta: -744.7MB). Peak memory consumption was 692.6MB. Max. memory is 8.0GB. [2022-02-15 11:47:21,581 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 173.0MB. Free memory is still 134.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-15 11:47:21,581 INFO L158 Benchmark]: CACSL2BoogieTranslator took 371.04ms. Allocated memory was 173.0MB in the beginning and 250.6MB in the end (delta: 77.6MB). Free memory was 117.2MB in the beginning and 220.4MB in the end (delta: -103.2MB). Peak memory consumption was 8.8MB. Max. memory is 8.0GB. [2022-02-15 11:47:21,581 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.08ms. Allocated memory is still 250.6MB. Free memory was 220.4MB in the beginning and 218.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-15 11:47:21,581 INFO L158 Benchmark]: Boogie Preprocessor took 51.79ms. Allocated memory is still 250.6MB. Free memory was 218.4MB in the beginning and 216.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-15 11:47:21,581 INFO L158 Benchmark]: RCFGBuilder took 597.91ms. Allocated memory is still 250.6MB. Free memory was 216.8MB in the beginning and 193.2MB in the end (delta: 23.6MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2022-02-15 11:47:21,581 INFO L158 Benchmark]: TraceAbstraction took 723229.23ms. Allocated memory was 250.6MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 192.7MB in the beginning and 862.1MB in the end (delta: -669.4MB). Peak memory consumption was 691.1MB. Max. memory is 8.0GB. [2022-02-15 11:47:21,581 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 173.0MB. Free memory is still 134.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 371.04ms. Allocated memory was 173.0MB in the beginning and 250.6MB in the end (delta: 77.6MB). Free memory was 117.2MB in the beginning and 220.4MB in the end (delta: -103.2MB). Peak memory consumption was 8.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 61.08ms. Allocated memory is still 250.6MB. Free memory was 220.4MB in the beginning and 218.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 51.79ms. Allocated memory is still 250.6MB. Free memory was 218.4MB in the beginning and 216.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 597.91ms. Allocated memory is still 250.6MB. Free memory was 216.8MB in the beginning and 193.2MB in the end (delta: 23.6MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * TraceAbstraction took 723229.23ms. Allocated memory was 250.6MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 192.7MB in the beginning and 862.1MB in the end (delta: -669.4MB). Peak memory consumption was 691.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 - TimeoutResultAtElement [Line: 161]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was analyzing trace of length 169 with TraceHistMax 2,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 24 known predicates. - TimeoutResultAtElement [Line: 155]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 169 with TraceHistMax 2,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 24 known predicates. - TimeoutResultAtElement [Line: 154]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 169 with TraceHistMax 2,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 24 known predicates. - TimeoutResultAtElement [Line: 153]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 169 with TraceHistMax 2,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 24 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 215 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 723.1s, OverallIterations: 94, TraceHistogramMax: 2, PathProgramHistogramMax: 92, EmptinessCheckTime: 2.0s, AutomataDifference: 209.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 137157 SdHoareTripleChecker+Valid, 57.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 137157 mSDsluCounter, 327855 SdHoareTripleChecker+Invalid, 47.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 48836 IncrementalHoareTripleChecker+Unchecked, 355878 mSDsCounter, 6849 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 136203 IncrementalHoareTripleChecker+Invalid, 191888 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6849 mSolverCounterUnsat, 21268 mSDtfsCounter, 136203 mSolverCounterSat, 0.9s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26037 GetRequests, 19053 SyntacticMatches, 266 SemanticMatches, 6718 ConstructedPredicates, 12 IntricatePredicates, 27 DeprecatedPredicates, 166703 ImplicationChecksByTransitivity, 237.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16132occurred in iteration=13, InterpolantAutomatonStates: 2968, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 20.9s AutomataMinimizationTime, 93 MinimizatonAttempts, 323396 StatesRemovedByMinimization, 91 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.5s SsaConstructionTime, 6.2s SatisfiabilityAnalysisTime, 456.5s InterpolantComputationTime, 29365 NumberOfCodeBlocks, 28580 NumberOfCodeBlocksAsserted, 200 NumberOfCheckSat, 35994 ConstructedInterpolants, 1293 QuantifiedInterpolants, 384419 SizeOfPredicates, 2020 NumberOfNonLiveVariables, 30918 ConjunctsInSsa, 3520 ConjunctsInUnsatCore, 217 InterpolantComputations, 76 PerfectInterpolantSequences, 632/1687 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown