/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/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/test-context1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 19:48:42,637 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 19:48:42,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 19:48:42,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-15 19:48:42,686 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-15 19:48:42,688 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-15 19:48:42,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-15 19:48:42,690 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-15 19:48:42,690 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-15 19:48:42,691 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-15 19:48:42,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-15 19:48:42,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-15 19:48:42,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-15 19:48:42,700 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-15 19:48:42,701 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-15 19:48:42,701 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-15 19:48:42,704 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-15 19:48:42,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 19:48:42,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 19:48:42,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 19:48:42,712 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2022-03-15 19:48:42,736 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 19:48:42,737 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 19:48:42,737 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 19:48:42,738 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 19:48:42,738 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 19:48:42,738 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 19:48:42,738 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 19:48:42,738 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 19:48:42,738 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 19:48:42,738 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 19:48:42,739 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 19:48:42,739 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 19:48:42,739 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 19:48:42,739 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 19:48:42,739 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 19:48:42,739 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 19:48:42,740 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 19:48:42,740 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 19:48:42,740 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 19:48:42,740 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 19:48:42,740 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 19:48:42,740 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 19:48:42,740 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 19:48:42,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 19:48:42,740 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 19:48:42,740 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-15 19:48:42,740 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 19:48:42,741 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 19:48:42,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 19:48:42,742 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2022-03-15 19:48:42,742 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2022-03-15 19:48:42,742 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 19:48:42,742 INFO L138 SettingsManager]: * Interpolant automaton=MCR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 19:48:42,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 19:48:42,960 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 19:48:42,962 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 19:48:42,963 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-15 19:48:42,963 INFO L275 PluginConnector]: CDTParser initialized [2022-03-15 19:48:42,964 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-context1.wvr.c [2022-03-15 19:48:43,001 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c98455b36/df024cb4426e4c3f8aeccd0eb9d308e4/FLAG48f29e874 [2022-03-15 19:48:43,386 INFO L306 CDTParser]: Found 1 translation units. [2022-03-15 19:48:43,387 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-context1.wvr.c [2022-03-15 19:48:43,395 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c98455b36/df024cb4426e4c3f8aeccd0eb9d308e4/FLAG48f29e874 [2022-03-15 19:48:43,409 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c98455b36/df024cb4426e4c3f8aeccd0eb9d308e4 [2022-03-15 19:48:43,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 19:48:43,412 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-15 19:48:43,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-15 19:48:43,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-15 19:48:43,415 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-15 19:48:43,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 07:48:43" (1/1) ... [2022-03-15 19:48:43,416 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f92ef24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:48:43, skipping insertion in model container [2022-03-15 19:48:43,417 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 07:48:43" (1/1) ... [2022-03-15 19:48:43,421 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-15 19:48:43,438 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-15 19:48:43,620 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/test-context1.wvr.c[2433,2446] [2022-03-15 19:48:43,634 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 19:48:43,641 INFO L203 MainTranslator]: Completed pre-run [2022-03-15 19:48:43,666 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/test-context1.wvr.c[2433,2446] [2022-03-15 19:48:43,672 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 19:48:43,681 INFO L208 MainTranslator]: Completed translation [2022-03-15 19:48:43,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:48:43 WrapperNode [2022-03-15 19:48:43,682 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-15 19:48:43,683 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 19:48:43,683 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 19:48:43,683 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 19:48:43,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:48:43" (1/1) ... [2022-03-15 19:48:43,699 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:48:43" (1/1) ... [2022-03-15 19:48:43,721 INFO L137 Inliner]: procedures = 24, calls = 34, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 131 [2022-03-15 19:48:43,721 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 19:48:43,722 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 19:48:43,722 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 19:48:43,722 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 19:48:43,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:48:43" (1/1) ... [2022-03-15 19:48:43,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:48:43" (1/1) ... [2022-03-15 19:48:43,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:48:43" (1/1) ... [2022-03-15 19:48:43,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:48:43" (1/1) ... [2022-03-15 19:48:43,746 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:48:43" (1/1) ... [2022-03-15 19:48:43,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:48:43" (1/1) ... [2022-03-15 19:48:43,749 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:48:43" (1/1) ... [2022-03-15 19:48:43,751 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 19:48:43,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 19:48:43,751 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 19:48:43,751 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 19:48:43,757 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:48:43" (1/1) ... [2022-03-15 19:48:43,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 19:48:43,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:48:43,789 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) [2022-03-15 19:48:43,821 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 [2022-03-15 19:48:43,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-15 19:48:43,831 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-15 19:48:43,831 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-15 19:48:43,831 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-15 19:48:43,831 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-15 19:48:43,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-15 19:48:43,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-15 19:48:43,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-15 19:48:43,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-15 19:48:43,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-15 19:48:43,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-15 19:48:43,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 19:48:43,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 19:48:43,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-15 19:48:43,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-15 19:48:43,833 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-15 19:48:43,946 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 19:48:43,947 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 19:48:44,098 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 19:48:44,167 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 19:48:44,167 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-03-15 19:48:44,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 07:48:44 BoogieIcfgContainer [2022-03-15 19:48:44,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 19:48:44,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 19:48:44,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 19:48:44,172 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 19:48:44,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.03 07:48:43" (1/3) ... [2022-03-15 19:48:44,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f1a9e3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 07:48:44, skipping insertion in model container [2022-03-15 19:48:44,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:48:43" (2/3) ... [2022-03-15 19:48:44,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f1a9e3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 07:48:44, skipping insertion in model container [2022-03-15 19:48:44,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 07:48:44" (3/3) ... [2022-03-15 19:48:44,173 INFO L111 eAbstractionObserver]: Analyzing ICFG test-context1.wvr.c [2022-03-15 19:48:44,177 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 19:48:44,177 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-15 19:48:44,177 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 19:48:44,177 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 19:48:44,197 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,197 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,197 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,198 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,198 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,198 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,198 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,198 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,198 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,198 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,198 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,198 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,199 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,199 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,199 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,199 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,199 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,199 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,199 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,200 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,200 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,200 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,200 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,200 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,201 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,201 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,201 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,201 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,201 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,201 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,201 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,201 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,201 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,202 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,202 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,202 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,202 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,202 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,202 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,202 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,202 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,202 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,204 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,205 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,205 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,205 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,205 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,205 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,205 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,206 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,206 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,206 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,206 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,206 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,206 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,206 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,206 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:48:44,208 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-15 19:48:44,234 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 19:48:44,238 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=MCR, 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=true, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 19:48:44,239 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-15 19:48:44,246 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 19:48:44,252 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 114 places, 116 transitions, 248 flow [2022-03-15 19:48:44,253 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 114 places, 116 transitions, 248 flow [2022-03-15 19:48:44,254 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 114 places, 116 transitions, 248 flow [2022-03-15 19:48:44,304 INFO L129 PetriNetUnfolder]: 9/114 cut-off events. [2022-03-15 19:48:44,305 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-03-15 19:48:44,307 INFO L84 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 114 events. 9/114 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 61 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 81. Up to 2 conditions per place. [2022-03-15 19:48:44,309 INFO L116 LiptonReduction]: Number of co-enabled transitions 368 [2022-03-15 19:48:47,280 INFO L131 LiptonReduction]: Checked pairs total: 453 [2022-03-15 19:48:47,281 INFO L133 LiptonReduction]: Total number of compositions: 118 [2022-03-15 19:48:47,289 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 18 transitions, 52 flow [2022-03-15 19:48:47,305 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 21 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:48:47,306 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:48:47,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-15 19:48:47,309 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:48:47,310 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:48:47,310 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:48:47,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:48:47,313 INFO L85 PathProgramCache]: Analyzing trace with hash -985101630, now seen corresponding path program 1 times [2022-03-15 19:48:47,326 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:48:47,327 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708464727] [2022-03-15 19:48:47,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:48:47,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:48:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:48:47,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:48:47,552 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:48:47,552 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708464727] [2022-03-15 19:48:47,553 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708464727] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 19:48:47,553 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 19:48:47,553 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-03-15 19:48:47,554 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [49663715] [2022-03-15 19:48:47,554 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:48:47,557 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:48:47,577 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 29 transitions. [2022-03-15 19:48:47,577 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:48:47,758 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 19:48:47,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 19:48:47,759 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:48:47,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 19:48:47,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 19:48:47,783 INFO L87 Difference]: Start difference. First operand has 21 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 0 states have call successors, (0), 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 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:48:47,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:48:47,808 INFO L93 Difference]: Finished difference Result 34 states and 71 transitions. [2022-03-15 19:48:47,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 19:48:47,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2022-03-15 19:48:47,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:48:47,814 INFO L225 Difference]: With dead ends: 34 [2022-03-15 19:48:47,814 INFO L226 Difference]: Without dead ends: 27 [2022-03-15 19:48:47,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 8 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 19:48:47,817 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 19:48:47,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 19:48:47,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-03-15 19:48:47,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-03-15 19:48:47,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 26 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:48:47,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 56 transitions. [2022-03-15 19:48:47,838 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 56 transitions. Word has length 12 [2022-03-15 19:48:47,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:48:47,838 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 56 transitions. [2022-03-15 19:48:47,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:48:47,839 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 56 transitions. [2022-03-15 19:48:47,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-15 19:48:47,839 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:48:47,839 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:48:47,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 19:48:47,840 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:48:47,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:48:47,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1397343388, now seen corresponding path program 1 times [2022-03-15 19:48:47,841 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:48:47,841 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298755505] [2022-03-15 19:48:47,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:48:47,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:48:47,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:48:47,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:48:47,873 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:48:47,873 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298755505] [2022-03-15 19:48:47,873 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298755505] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 19:48:47,873 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 19:48:47,873 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-15 19:48:47,873 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [540961784] [2022-03-15 19:48:47,873 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:48:47,875 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:48:47,877 INFO L252 McrAutomatonBuilder]: Finished intersection with 27 states and 41 transitions. [2022-03-15 19:48:47,877 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:48:48,060 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [253#(<= ~size~0 0)] [2022-03-15 19:48:48,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 19:48:48,061 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:48:48,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 19:48:48,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-15 19:48:48,061 INFO L87 Difference]: Start difference. First operand 27 states and 56 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:48:48,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:48:48,099 INFO L93 Difference]: Finished difference Result 37 states and 72 transitions. [2022-03-15 19:48:48,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 19:48:48,099 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 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 13 [2022-03-15 19:48:48,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:48:48,100 INFO L225 Difference]: With dead ends: 37 [2022-03-15 19:48:48,100 INFO L226 Difference]: Without dead ends: 31 [2022-03-15 19:48:48,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-15 19:48:48,101 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 8 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 19:48:48,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 0 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 19:48:48,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-03-15 19:48:48,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-03-15 19:48:48,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 2.1) internal successors, (63), 30 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:48:48,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 63 transitions. [2022-03-15 19:48:48,104 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 63 transitions. Word has length 13 [2022-03-15 19:48:48,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:48:48,104 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 63 transitions. [2022-03-15 19:48:48,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:48:48,105 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 63 transitions. [2022-03-15 19:48:48,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-15 19:48:48,105 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:48:48,105 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:48:48,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 19:48:48,105 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:48:48,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:48:48,106 INFO L85 PathProgramCache]: Analyzing trace with hash 573224192, now seen corresponding path program 1 times [2022-03-15 19:48:48,106 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:48:48,107 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599970927] [2022-03-15 19:48:48,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:48:48,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:48:48,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:48:48,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:48:48,210 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:48:48,210 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599970927] [2022-03-15 19:48:48,210 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599970927] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 19:48:48,211 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 19:48:48,211 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 19:48:48,211 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [959567975] [2022-03-15 19:48:48,211 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:48:48,212 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:48:48,215 INFO L252 McrAutomatonBuilder]: Finished intersection with 29 states and 44 transitions. [2022-03-15 19:48:48,215 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:48:48,426 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [357#(or (<= ~size~0 0) (<= ~n~0 ~front~0) (< ~front~0 0))] [2022-03-15 19:48:48,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 19:48:48,426 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:48:48,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 19:48:48,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-15 19:48:48,427 INFO L87 Difference]: Start difference. First operand 31 states and 63 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:48:48,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:48:48,464 INFO L93 Difference]: Finished difference Result 37 states and 69 transitions. [2022-03-15 19:48:48,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 19:48:48,464 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 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 14 [2022-03-15 19:48:48,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:48:48,464 INFO L225 Difference]: With dead ends: 37 [2022-03-15 19:48:48,464 INFO L226 Difference]: Without dead ends: 32 [2022-03-15 19:48:48,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-03-15 19:48:48,465 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 19:48:48,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 19:48:48,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-03-15 19:48:48,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-03-15 19:48:48,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 2.064516129032258) internal successors, (64), 31 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:48:48,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 64 transitions. [2022-03-15 19:48:48,469 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 64 transitions. Word has length 14 [2022-03-15 19:48:48,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:48:48,469 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 64 transitions. [2022-03-15 19:48:48,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:48:48,469 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 64 transitions. [2022-03-15 19:48:48,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-15 19:48:48,469 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:48:48,469 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:48:48,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-15 19:48:48,470 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:48:48,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:48:48,470 INFO L85 PathProgramCache]: Analyzing trace with hash 880147608, now seen corresponding path program 1 times [2022-03-15 19:48:48,471 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:48:48,471 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647894599] [2022-03-15 19:48:48,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:48:48,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:48:48,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:48:48,551 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:48:48,551 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:48:48,551 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647894599] [2022-03-15 19:48:48,551 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647894599] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:48:48,552 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487052131] [2022-03-15 19:48:48,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:48:48,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:48:48,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:48:48,553 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) [2022-03-15 19:48:48,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-15 19:48:48,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:48:48,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 19:48:48,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:48:48,705 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 [2022-03-15 19:48:48,714 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:48:48,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:48:48,763 INFO L353 Elim1Store]: treesize reduction 14, result has 26.3 percent of original size [2022-03-15 19:48:48,764 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 27 treesize of output 13 [2022-03-15 19:48:48,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:48:48,780 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487052131] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:48:48,780 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:48:48,780 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 6 [2022-03-15 19:48:48,780 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2009991104] [2022-03-15 19:48:48,780 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:48:48,781 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:48:48,785 INFO L252 McrAutomatonBuilder]: Finished intersection with 30 states and 45 transitions. [2022-03-15 19:48:48,785 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:48:49,020 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [553#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0))] [2022-03-15 19:48:49,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 19:48:49,021 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:48:49,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 19:48:49,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-03-15 19:48:49,022 INFO L87 Difference]: Start difference. First operand 32 states and 64 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:48:49,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:48:49,096 INFO L93 Difference]: Finished difference Result 53 states and 111 transitions. [2022-03-15 19:48:49,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 19:48:49,097 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 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 15 [2022-03-15 19:48:49,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:48:49,097 INFO L225 Difference]: With dead ends: 53 [2022-03-15 19:48:49,097 INFO L226 Difference]: Without dead ends: 46 [2022-03-15 19:48:49,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-03-15 19:48:49,098 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 21 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:48:49,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 0 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 19:48:49,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-03-15 19:48:49,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2022-03-15 19:48:49,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 2.1025641025641026) internal successors, (82), 39 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:48:49,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 82 transitions. [2022-03-15 19:48:49,103 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 82 transitions. Word has length 15 [2022-03-15 19:48:49,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:48:49,103 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 82 transitions. [2022-03-15 19:48:49,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:48:49,104 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 82 transitions. [2022-03-15 19:48:49,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-15 19:48:49,104 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:48:49,104 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:48:49,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-15 19:48:49,305 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 [2022-03-15 19:48:49,305 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:48:49,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:48:49,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1197557604, now seen corresponding path program 2 times [2022-03-15 19:48:49,307 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:48:49,307 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196836277] [2022-03-15 19:48:49,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:48:49,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:48:49,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:48:49,507 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:48:49,507 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:48:49,507 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196836277] [2022-03-15 19:48:49,508 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196836277] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:48:49,508 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544766416] [2022-03-15 19:48:49,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 19:48:49,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:48:49,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:48:49,509 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) [2022-03-15 19:48:49,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-15 19:48:49,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 19:48:49,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:48:49,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 35 conjunts are in the unsatisfiable core [2022-03-15 19:48:49,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:48:49,670 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 11 treesize of output 7 [2022-03-15 19:48:49,702 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 [2022-03-15 19:48:49,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:48:49,772 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 [2022-03-15 19:48:49,797 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 [2022-03-15 19:48:49,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:48:49,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:48:49,845 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_103 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_103) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4))))) is different from false [2022-03-15 19:48:49,891 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_102 (Array Int Int)) (v_ArrVal_103 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_102)) (.cse1 (* c_~front~0 4))) (or (not (= 5 (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* c_~size~0 4) .cse1 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_103) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ .cse1 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 5)))) is different from false [2022-03-15 19:48:49,906 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:48:49,906 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 60 treesize of output 48 [2022-03-15 19:48:49,919 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:48:49,920 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 106 treesize of output 106 [2022-03-15 19:48:49,928 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:48:49,928 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 60 treesize of output 64 [2022-03-15 19:48:49,936 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 54 treesize of output 42 [2022-03-15 19:48:50,021 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-03-15 19:48:50,022 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544766416] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:48:50,022 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:48:50,022 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2022-03-15 19:48:50,022 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [334696449] [2022-03-15 19:48:50,023 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:48:50,025 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:48:50,028 INFO L252 McrAutomatonBuilder]: Finished intersection with 29 states and 43 transitions. [2022-03-15 19:48:50,028 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:48:50,276 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [792#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0))] [2022-03-15 19:48:50,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-15 19:48:50,277 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:48:50,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-15 19:48:50,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=187, Unknown=2, NotChecked=58, Total=306 [2022-03-15 19:48:50,278 INFO L87 Difference]: Start difference. First operand 40 states and 82 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:48:50,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:48:50,470 INFO L93 Difference]: Finished difference Result 83 states and 175 transitions. [2022-03-15 19:48:50,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-15 19:48:50,470 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 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 15 [2022-03-15 19:48:50,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:48:50,471 INFO L225 Difference]: With dead ends: 83 [2022-03-15 19:48:50,471 INFO L226 Difference]: Without dead ends: 76 [2022-03-15 19:48:50,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=327, Unknown=2, NotChecked=78, Total=506 [2022-03-15 19:48:50,472 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 26 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:48:50,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 0 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 19:48:50,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-03-15 19:48:50,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 45. [2022-03-15 19:48:50,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 2.0681818181818183) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:48:50,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 91 transitions. [2022-03-15 19:48:50,475 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 91 transitions. Word has length 15 [2022-03-15 19:48:50,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:48:50,476 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 91 transitions. [2022-03-15 19:48:50,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:48:50,476 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 91 transitions. [2022-03-15 19:48:50,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-15 19:48:50,483 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:48:50,483 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:48:50,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-15 19:48:50,699 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 [2022-03-15 19:48:50,699 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:48:50,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:48:50,699 INFO L85 PathProgramCache]: Analyzing trace with hash -272866300, now seen corresponding path program 3 times [2022-03-15 19:48:50,700 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:48:50,701 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135113557] [2022-03-15 19:48:50,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:48:50,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:48:50,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:48:50,807 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 19:48:50,807 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:48:50,808 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135113557] [2022-03-15 19:48:50,808 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135113557] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:48:50,808 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146822846] [2022-03-15 19:48:50,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 19:48:50,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:48:50,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:48:50,809 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) [2022-03-15 19:48:50,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-15 19:48:50,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 19:48:50,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:48:50,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-15 19:48:50,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:48:50,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:48:50,991 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 [2022-03-15 19:48:51,014 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 [2022-03-15 19:48:51,045 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 19:48:51,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:48:51,076 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_138 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_138) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4))))) is different from false [2022-03-15 19:48:51,085 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:48:51,086 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 45 [2022-03-15 19:48:51,089 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 13 treesize of output 7 [2022-03-15 19:48:51,131 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 19:48:51,132 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146822846] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:48:51,132 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:48:51,132 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 12 [2022-03-15 19:48:51,132 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1726445434] [2022-03-15 19:48:51,132 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:48:51,134 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:48:51,138 INFO L252 McrAutomatonBuilder]: Finished intersection with 30 states and 44 transitions. [2022-03-15 19:48:51,138 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:48:51,372 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1080#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0))] [2022-03-15 19:48:51,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 19:48:51,372 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:48:51,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 19:48:51,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=137, Unknown=1, NotChecked=24, Total=210 [2022-03-15 19:48:51,373 INFO L87 Difference]: Start difference. First operand 45 states and 91 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:48:51,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:48:51,472 INFO L93 Difference]: Finished difference Result 72 states and 152 transitions. [2022-03-15 19:48:51,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 19:48:51,473 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 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 16 [2022-03-15 19:48:51,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:48:51,473 INFO L225 Difference]: With dead ends: 72 [2022-03-15 19:48:51,473 INFO L226 Difference]: Without dead ends: 65 [2022-03-15 19:48:51,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=233, Unknown=1, NotChecked=32, Total=342 [2022-03-15 19:48:51,474 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:48:51,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 19:48:51,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-03-15 19:48:51,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 38. [2022-03-15 19:48:51,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 2.108108108108108) internal successors, (78), 37 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:48:51,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 78 transitions. [2022-03-15 19:48:51,477 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 78 transitions. Word has length 16 [2022-03-15 19:48:51,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:48:51,477 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 78 transitions. [2022-03-15 19:48:51,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:48:51,478 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 78 transitions. [2022-03-15 19:48:51,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-15 19:48:51,478 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:48:51,478 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:48:51,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-15 19:48:51,694 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 [2022-03-15 19:48:51,694 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:48:51,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:48:51,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1277386356, now seen corresponding path program 4 times [2022-03-15 19:48:51,696 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:48:51,696 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596271420] [2022-03-15 19:48:51,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:48:51,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:48:51,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:48:51,724 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:48:51,724 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:48:51,724 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596271420] [2022-03-15 19:48:51,724 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596271420] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 19:48:51,724 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 19:48:51,724 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-15 19:48:51,724 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1483797763] [2022-03-15 19:48:51,724 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:48:51,726 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:48:51,730 INFO L252 McrAutomatonBuilder]: Finished intersection with 36 states and 57 transitions. [2022-03-15 19:48:51,731 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:48:51,908 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 19:48:51,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 19:48:51,908 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:48:51,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 19:48:51,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-15 19:48:51,909 INFO L87 Difference]: Start difference. First operand 38 states and 78 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:48:51,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:48:51,943 INFO L93 Difference]: Finished difference Result 88 states and 176 transitions. [2022-03-15 19:48:51,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 19:48:51,943 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 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 16 [2022-03-15 19:48:51,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:48:51,944 INFO L225 Difference]: With dead ends: 88 [2022-03-15 19:48:51,944 INFO L226 Difference]: Without dead ends: 78 [2022-03-15 19:48:51,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-15 19:48:51,945 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 19:48:51,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 19:48:51,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-03-15 19:48:51,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 62. [2022-03-15 19:48:51,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 2.262295081967213) internal successors, (138), 61 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:48:51,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 138 transitions. [2022-03-15 19:48:51,948 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 138 transitions. Word has length 16 [2022-03-15 19:48:51,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:48:51,949 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 138 transitions. [2022-03-15 19:48:51,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:48:51,949 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 138 transitions. [2022-03-15 19:48:51,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-15 19:48:51,949 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:48:51,949 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:48:51,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-15 19:48:51,950 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:48:51,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:48:51,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1055005828, now seen corresponding path program 5 times [2022-03-15 19:48:51,951 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:48:51,951 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046385642] [2022-03-15 19:48:51,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:48:51,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:48:51,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:48:51,999 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:48:51,999 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:48:51,999 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046385642] [2022-03-15 19:48:51,999 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046385642] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:48:51,999 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080208135] [2022-03-15 19:48:51,999 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 19:48:52,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:48:52,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:48:52,016 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) [2022-03-15 19:48:52,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-15 19:48:52,095 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 19:48:52,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:48:52,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-15 19:48:52,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:48:52,180 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:48:52,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:48:52,305 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:48:52,305 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080208135] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:48:52,305 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:48:52,305 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2022-03-15 19:48:52,305 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1277516951] [2022-03-15 19:48:52,306 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:48:52,308 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:48:52,314 INFO L252 McrAutomatonBuilder]: Finished intersection with 33 states and 49 transitions. [2022-03-15 19:48:52,314 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:48:52,512 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1564#(or (<= ~size~0 0) (<= ~n~0 ~front~0) (< ~front~0 0))] [2022-03-15 19:48:52,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 19:48:52,512 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:48:52,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 19:48:52,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2022-03-15 19:48:52,513 INFO L87 Difference]: Start difference. First operand 62 states and 138 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:48:52,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:48:52,640 INFO L93 Difference]: Finished difference Result 74 states and 154 transitions. [2022-03-15 19:48:52,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-15 19:48:52,640 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 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 17 [2022-03-15 19:48:52,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:48:52,641 INFO L225 Difference]: With dead ends: 74 [2022-03-15 19:48:52,641 INFO L226 Difference]: Without dead ends: 63 [2022-03-15 19:48:52,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2022-03-15 19:48:52,641 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:48:52,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 19:48:52,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-03-15 19:48:52,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-03-15 19:48:52,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 2.2419354838709675) internal successors, (139), 62 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:48:52,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 139 transitions. [2022-03-15 19:48:52,645 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 139 transitions. Word has length 17 [2022-03-15 19:48:52,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:48:52,645 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 139 transitions. [2022-03-15 19:48:52,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:48:52,645 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 139 transitions. [2022-03-15 19:48:52,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 19:48:52,646 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:48:52,646 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:48:52,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-15 19:48:52,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:48:52,859 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:48:52,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:48:52,860 INFO L85 PathProgramCache]: Analyzing trace with hash 625118700, now seen corresponding path program 6 times [2022-03-15 19:48:52,862 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:48:52,862 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92050167] [2022-03-15 19:48:52,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:48:52,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:48:52,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:48:52,992 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 19:48:52,992 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:48:52,992 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92050167] [2022-03-15 19:48:52,992 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92050167] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:48:52,992 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891593118] [2022-03-15 19:48:52,992 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 19:48:52,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:48:52,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:48:52,993 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) [2022-03-15 19:48:52,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-15 19:48:53,103 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 19:48:53,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:48:53,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 33 conjunts are in the unsatisfiable core [2022-03-15 19:48:53,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:48:53,261 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-15 19:48:53,262 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:48:53,262 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 [2022-03-15 19:48:53,270 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:48:53,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:48:53,303 INFO L353 Elim1Store]: treesize reduction 14, result has 26.3 percent of original size [2022-03-15 19:48:53,303 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 13 [2022-03-15 19:48:53,418 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:48:53,419 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891593118] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:48:53,419 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:48:53,419 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 18 [2022-03-15 19:48:53,419 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1365019392] [2022-03-15 19:48:53,419 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:48:53,421 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:48:53,426 INFO L252 McrAutomatonBuilder]: Finished intersection with 34 states and 50 transitions. [2022-03-15 19:48:53,427 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:48:53,711 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1897#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0))] [2022-03-15 19:48:53,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-15 19:48:53,712 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:48:53,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-15 19:48:53,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-15 19:48:53,712 INFO L87 Difference]: Start difference. First operand 63 states and 139 transitions. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:48:53,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:48:53,838 INFO L93 Difference]: Finished difference Result 125 states and 286 transitions. [2022-03-15 19:48:53,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-15 19:48:53,838 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 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 18 [2022-03-15 19:48:53,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:48:53,839 INFO L225 Difference]: With dead ends: 125 [2022-03-15 19:48:53,839 INFO L226 Difference]: Without dead ends: 106 [2022-03-15 19:48:53,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=537, Unknown=0, NotChecked=0, Total=650 [2022-03-15 19:48:53,840 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 40 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:48:53,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 0 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 19:48:53,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-03-15 19:48:53,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 67. [2022-03-15 19:48:53,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 2.227272727272727) internal successors, (147), 66 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:48:53,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 147 transitions. [2022-03-15 19:48:53,843 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 147 transitions. Word has length 18 [2022-03-15 19:48:53,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:48:53,843 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 147 transitions. [2022-03-15 19:48:53,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:48:53,843 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 147 transitions. [2022-03-15 19:48:53,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 19:48:53,844 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:48:53,844 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:48:53,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-15 19:48:54,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:48:54,060 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:48:54,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:48:54,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1660700524, now seen corresponding path program 7 times [2022-03-15 19:48:54,061 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:48:54,061 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013593395] [2022-03-15 19:48:54,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:48:54,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:48:54,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:48:54,179 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 19:48:54,180 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:48:54,180 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013593395] [2022-03-15 19:48:54,180 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013593395] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:48:54,180 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788016618] [2022-03-15 19:48:54,180 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 19:48:54,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:48:54,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:48:54,181 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) [2022-03-15 19:48:54,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-15 19:48:54,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:48:54,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 28 conjunts are in the unsatisfiable core [2022-03-15 19:48:54,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:48:54,382 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 [2022-03-15 19:48:54,389 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:48:54,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:48:54,440 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 19:48:54,440 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 28 treesize of output 13 [2022-03-15 19:48:54,498 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 19:48:54,498 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788016618] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:48:54,498 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:48:54,499 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 15 [2022-03-15 19:48:54,500 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [208684172] [2022-03-15 19:48:54,500 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:48:54,502 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:48:54,508 INFO L252 McrAutomatonBuilder]: Finished intersection with 40 states and 63 transitions. [2022-03-15 19:48:54,508 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:48:54,948 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [2287#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0)), 2286#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0))] [2022-03-15 19:48:54,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-15 19:48:54,949 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:48:54,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-15 19:48:54,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2022-03-15 19:48:54,949 INFO L87 Difference]: Start difference. First operand 67 states and 147 transitions. Second operand has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:48:55,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:48:55,180 INFO L93 Difference]: Finished difference Result 145 states and 331 transitions. [2022-03-15 19:48:55,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 19:48:55,180 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 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 18 [2022-03-15 19:48:55,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:48:55,181 INFO L225 Difference]: With dead ends: 145 [2022-03-15 19:48:55,181 INFO L226 Difference]: Without dead ends: 130 [2022-03-15 19:48:55,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2022-03-15 19:48:55,182 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 50 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:48:55,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 0 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 19:48:55,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-03-15 19:48:55,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 79. [2022-03-15 19:48:55,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 2.217948717948718) internal successors, (173), 78 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:48:55,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 173 transitions. [2022-03-15 19:48:55,186 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 173 transitions. Word has length 18 [2022-03-15 19:48:55,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:48:55,186 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 173 transitions. [2022-03-15 19:48:55,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:48:55,186 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 173 transitions. [2022-03-15 19:48:55,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 19:48:55,187 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:48:55,187 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:48:55,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-03-15 19:48:55,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:48:55,403 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:48:55,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:48:55,403 INFO L85 PathProgramCache]: Analyzing trace with hash -2027512318, now seen corresponding path program 8 times [2022-03-15 19:48:55,404 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:48:55,404 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793487171] [2022-03-15 19:48:55,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:48:55,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:48:55,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:48:55,666 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:48:55,666 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:48:55,666 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793487171] [2022-03-15 19:48:55,666 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793487171] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:48:55,666 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764752997] [2022-03-15 19:48:55,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 19:48:55,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:48:55,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:48:55,667 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) [2022-03-15 19:48:55,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-15 19:48:55,730 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 19:48:55,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:48:55,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 19:48:55,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:48:55,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:48:55,830 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 19 treesize of output 21 [2022-03-15 19:48:55,866 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 [2022-03-15 19:48:55,875 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 19:48:55,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:48:55,918 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_287 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_287) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 4)) 5)) is different from false [2022-03-15 19:48:55,926 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:48:55,927 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 47 treesize of output 47 [2022-03-15 19:48:55,929 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 14 treesize of output 7 [2022-03-15 19:48:55,995 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 19:48:55,995 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764752997] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:48:55,995 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:48:55,995 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2022-03-15 19:48:55,995 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1413666792] [2022-03-15 19:48:55,995 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:48:55,997 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:48:56,002 INFO L252 McrAutomatonBuilder]: Finished intersection with 37 states and 57 transitions. [2022-03-15 19:48:56,002 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:48:56,448 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [2734#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~n~0 (+ ~front~0 1)) (<= ~size~0 1) (< ~front~0 0)), 2733#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (<= ~n~0 ~front~0) (< ~front~0 0))] [2022-03-15 19:48:56,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 19:48:56,449 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:48:56,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 19:48:56,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=423, Unknown=1, NotChecked=42, Total=552 [2022-03-15 19:48:56,450 INFO L87 Difference]: Start difference. First operand 79 states and 173 transitions. Second operand has 12 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:48:56,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:48:56,666 INFO L93 Difference]: Finished difference Result 116 states and 258 transitions. [2022-03-15 19:48:56,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-15 19:48:56,667 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 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 18 [2022-03-15 19:48:56,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:48:56,667 INFO L225 Difference]: With dead ends: 116 [2022-03-15 19:48:56,667 INFO L226 Difference]: Without dead ends: 109 [2022-03-15 19:48:56,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=152, Invalid=721, Unknown=1, NotChecked=56, Total=930 [2022-03-15 19:48:56,669 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 39 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:48:56,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 0 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 19:48:56,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-03-15 19:48:56,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 77. [2022-03-15 19:48:56,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 2.223684210526316) internal successors, (169), 76 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:48:56,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 169 transitions. [2022-03-15 19:48:56,672 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 169 transitions. Word has length 18 [2022-03-15 19:48:56,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:48:56,672 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 169 transitions. [2022-03-15 19:48:56,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:48:56,672 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 169 transitions. [2022-03-15 19:48:56,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-15 19:48:56,673 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:48:56,673 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:48:56,704 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-03-15 19:48:56,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:48:56,887 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:48:56,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:48:56,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1560700176, now seen corresponding path program 9 times [2022-03-15 19:48:56,889 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:48:56,889 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252849703] [2022-03-15 19:48:56,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:48:56,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:48:56,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:48:56,926 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 19:48:56,926 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:48:56,926 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252849703] [2022-03-15 19:48:56,926 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252849703] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:48:56,926 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697862113] [2022-03-15 19:48:56,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 19:48:56,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:48:56,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:48:56,948 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) [2022-03-15 19:48:56,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-15 19:48:57,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 19:48:57,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:48:57,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 42 conjunts are in the unsatisfiable core [2022-03-15 19:48:57,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:48:57,251 INFO L353 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2022-03-15 19:48:57,252 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 13 [2022-03-15 19:48:57,264 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 19:48:57,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:48:57,342 INFO L353 Elim1Store]: treesize reduction 39, result has 38.1 percent of original size [2022-03-15 19:48:57,342 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 43 treesize of output 35 [2022-03-15 19:48:57,462 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 19:48:57,462 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697862113] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:48:57,462 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:48:57,462 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 18 [2022-03-15 19:48:57,462 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1143121408] [2022-03-15 19:48:57,462 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:48:57,464 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:48:57,470 INFO L252 McrAutomatonBuilder]: Finished intersection with 46 states and 75 transitions. [2022-03-15 19:48:57,470 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:48:57,738 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 19:48:57,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 19:48:57,738 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:48:57,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 19:48:57,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2022-03-15 19:48:57,739 INFO L87 Difference]: Start difference. First operand 77 states and 169 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:48:57,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:48:57,796 INFO L93 Difference]: Finished difference Result 159 states and 339 transitions. [2022-03-15 19:48:57,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 19:48:57,796 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 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 19 [2022-03-15 19:48:57,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:48:57,797 INFO L225 Difference]: With dead ends: 159 [2022-03-15 19:48:57,797 INFO L226 Difference]: Without dead ends: 145 [2022-03-15 19:48:57,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2022-03-15 19:48:57,797 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 26 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 19:48:57,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 0 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 19:48:57,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-03-15 19:48:57,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 99. [2022-03-15 19:48:57,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 2.306122448979592) internal successors, (226), 98 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:48:57,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 226 transitions. [2022-03-15 19:48:57,800 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 226 transitions. Word has length 19 [2022-03-15 19:48:57,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:48:57,800 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 226 transitions. [2022-03-15 19:48:57,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:48:57,801 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 226 transitions. [2022-03-15 19:48:57,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-15 19:48:57,801 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:48:57,801 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:48:57,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-15 19:48:58,021 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,SelfDestructingSolverStorable11 [2022-03-15 19:48:58,021 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:48:58,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:48:58,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1158624896, now seen corresponding path program 10 times [2022-03-15 19:48:58,023 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:48:58,023 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563453192] [2022-03-15 19:48:58,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:48:58,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:48:58,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:48:58,098 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 19:48:58,098 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:48:58,098 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563453192] [2022-03-15 19:48:58,098 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563453192] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:48:58,098 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218328528] [2022-03-15 19:48:58,098 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 19:48:58,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:48:58,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:48:58,099 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) [2022-03-15 19:48:58,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-15 19:48:58,178 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 19:48:58,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:48:58,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-15 19:48:58,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:48:58,323 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 19:48:58,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:48:58,459 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 19:48:58,459 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218328528] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:48:58,459 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:48:58,459 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2022-03-15 19:48:58,459 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [761124091] [2022-03-15 19:48:58,459 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:48:58,461 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:48:58,467 INFO L252 McrAutomatonBuilder]: Finished intersection with 39 states and 58 transitions. [2022-03-15 19:48:58,467 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:48:58,668 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3637#(or (<= ~size~0 0) (<= ~n~0 ~front~0) (< ~front~0 0))] [2022-03-15 19:48:58,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-15 19:48:58,669 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:48:58,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-15 19:48:58,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2022-03-15 19:48:58,669 INFO L87 Difference]: Start difference. First operand 99 states and 226 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:48:58,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:48:58,855 INFO L93 Difference]: Finished difference Result 173 states and 357 transitions. [2022-03-15 19:48:58,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-15 19:48:58,856 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 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 20 [2022-03-15 19:48:58,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:48:58,856 INFO L225 Difference]: With dead ends: 173 [2022-03-15 19:48:58,856 INFO L226 Difference]: Without dead ends: 100 [2022-03-15 19:48:58,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=171, Invalid=531, Unknown=0, NotChecked=0, Total=702 [2022-03-15 19:48:58,857 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 32 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:48:58,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 0 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 19:48:58,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-03-15 19:48:58,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2022-03-15 19:48:58,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 2.292929292929293) internal successors, (227), 99 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:48:58,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 227 transitions. [2022-03-15 19:48:58,860 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 227 transitions. Word has length 20 [2022-03-15 19:48:58,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:48:58,860 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 227 transitions. [2022-03-15 19:48:58,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:48:58,860 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 227 transitions. [2022-03-15 19:48:58,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 19:48:58,861 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:48:58,861 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:48:58,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-15 19:48:59,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-03-15 19:48:59,075 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:48:59,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:48:59,076 INFO L85 PathProgramCache]: Analyzing trace with hash -333578472, now seen corresponding path program 11 times [2022-03-15 19:48:59,077 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:48:59,077 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015435419] [2022-03-15 19:48:59,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:48:59,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:48:59,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:48:59,260 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:48:59,261 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:48:59,261 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015435419] [2022-03-15 19:48:59,261 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015435419] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:48:59,261 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185262284] [2022-03-15 19:48:59,261 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 19:48:59,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:48:59,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:48:59,280 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) [2022-03-15 19:48:59,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-15 19:48:59,354 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 19:48:59,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:48:59,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-15 19:48:59,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:48:59,442 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 13 treesize of output 9 [2022-03-15 19:48:59,474 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 [2022-03-15 19:48:59,504 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 [2022-03-15 19:48:59,645 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 [2022-03-15 19:48:59,654 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:48:59,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:48:59,832 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_397 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_397) c_~queue~0.base)) (.cse1 (* c_~front~0 4))) (or (not (= (select .cse0 (+ (* c_~size~0 4) c_~queue~0.offset .cse1 8)) 5)) (= 5 (select .cse0 (+ c_~queue~0.offset .cse1 8)))))) is different from false [2022-03-15 19:48:59,846 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_397 (Array Int Int)) (v_ArrVal_396 (Array Int Int))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_396) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_397) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (.cse1 (* c_~front~0 4))) (or (not (= 5 (select .cse0 (+ (* c_~size~0 4) .cse1 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) (= 5 (select .cse0 (+ .cse1 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))))) is different from false [2022-03-15 19:48:59,853 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:48:59,853 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 65 treesize of output 53 [2022-03-15 19:48:59,859 INFO L353 Elim1Store]: treesize reduction 16, result has 23.8 percent of original size [2022-03-15 19:48:59,860 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 160 treesize of output 144 [2022-03-15 19:48:59,864 INFO L353 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-03-15 19:48:59,865 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 139 treesize of output 105 [2022-03-15 19:48:59,870 INFO L353 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-03-15 19:48:59,870 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 84 treesize of output 67 [2022-03-15 19:48:59,921 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 3 not checked. [2022-03-15 19:48:59,922 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185262284] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:48:59,922 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:48:59,922 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 10] total 31 [2022-03-15 19:48:59,922 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [670116548] [2022-03-15 19:48:59,922 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:48:59,924 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:48:59,931 INFO L252 McrAutomatonBuilder]: Finished intersection with 40 states and 59 transitions. [2022-03-15 19:48:59,931 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:49:00,253 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4176#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0))] [2022-03-15 19:49:00,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 19:49:00,254 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:49:00,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 19:49:00,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=846, Unknown=2, NotChecked=122, Total=1122 [2022-03-15 19:49:00,255 INFO L87 Difference]: Start difference. First operand 100 states and 227 transitions. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:00,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:49:00,657 INFO L93 Difference]: Finished difference Result 286 states and 664 transitions. [2022-03-15 19:49:00,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-15 19:49:00,658 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 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 21 [2022-03-15 19:49:00,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:49:00,659 INFO L225 Difference]: With dead ends: 286 [2022-03-15 19:49:00,659 INFO L226 Difference]: Without dead ends: 242 [2022-03-15 19:49:00,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=318, Invalid=1758, Unknown=2, NotChecked=178, Total=2256 [2022-03-15 19:49:00,660 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 63 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:49:00,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 0 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 19:49:00,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-03-15 19:49:00,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 104. [2022-03-15 19:49:00,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.3009708737864076) internal successors, (237), 103 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:00,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 237 transitions. [2022-03-15 19:49:00,664 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 237 transitions. Word has length 21 [2022-03-15 19:49:00,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:49:00,664 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 237 transitions. [2022-03-15 19:49:00,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:00,664 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 237 transitions. [2022-03-15 19:49:00,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 19:49:00,665 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:49:00,665 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:49:00,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-15 19:49:00,881 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,SelfDestructingSolverStorable13 [2022-03-15 19:49:00,881 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:49:00,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:49:00,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1675569600, now seen corresponding path program 12 times [2022-03-15 19:49:00,882 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:49:00,882 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948820532] [2022-03-15 19:49:00,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:49:00,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:49:00,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:49:01,047 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:49:01,047 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:49:01,047 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948820532] [2022-03-15 19:49:01,047 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948820532] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:49:01,047 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426042103] [2022-03-15 19:49:01,047 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 19:49:01,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:49:01,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:49:01,049 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) [2022-03-15 19:49:01,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-15 19:49:01,124 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 19:49:01,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:49:01,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-15 19:49:01,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:49:01,227 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 [2022-03-15 19:49:01,233 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-15 19:49:01,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:49:01,266 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 19:49:01,266 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 28 treesize of output 13 [2022-03-15 19:49:01,330 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-03-15 19:49:01,331 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426042103] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:49:01,331 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:49:01,331 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 6] total 22 [2022-03-15 19:49:01,331 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1143909679] [2022-03-15 19:49:01,331 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:49:01,333 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:49:01,340 INFO L252 McrAutomatonBuilder]: Finished intersection with 44 states and 68 transitions. [2022-03-15 19:49:01,340 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:49:01,785 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [4843#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0)), 4844#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0))] [2022-03-15 19:49:01,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-15 19:49:01,786 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:49:01,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-15 19:49:01,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2022-03-15 19:49:01,786 INFO L87 Difference]: Start difference. First operand 104 states and 237 transitions. Second operand has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:02,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:49:02,221 INFO L93 Difference]: Finished difference Result 368 states and 857 transitions. [2022-03-15 19:49:02,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 19:49:02,221 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 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 21 [2022-03-15 19:49:02,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:49:02,223 INFO L225 Difference]: With dead ends: 368 [2022-03-15 19:49:02,223 INFO L226 Difference]: Without dead ends: 325 [2022-03-15 19:49:02,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 45 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=301, Invalid=1591, Unknown=0, NotChecked=0, Total=1892 [2022-03-15 19:49:02,223 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 73 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 19:49:02,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 0 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 19:49:02,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-03-15 19:49:02,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 106. [2022-03-15 19:49:02,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 2.3047619047619046) internal successors, (242), 105 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:02,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 242 transitions. [2022-03-15 19:49:02,230 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 242 transitions. Word has length 21 [2022-03-15 19:49:02,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:49:02,230 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 242 transitions. [2022-03-15 19:49:02,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:02,230 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 242 transitions. [2022-03-15 19:49:02,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 19:49:02,231 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:49:02,231 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:49:02,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-03-15 19:49:02,439 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,SelfDestructingSolverStorable14 [2022-03-15 19:49:02,439 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:49:02,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:49:02,440 INFO L85 PathProgramCache]: Analyzing trace with hash -465349608, now seen corresponding path program 13 times [2022-03-15 19:49:02,441 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:49:02,441 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004317870] [2022-03-15 19:49:02,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:49:02,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:49:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:49:02,618 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:49:02,619 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:49:02,619 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004317870] [2022-03-15 19:49:02,619 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004317870] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:49:02,619 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781781244] [2022-03-15 19:49:02,619 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 19:49:02,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:49:02,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:49:02,620 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) [2022-03-15 19:49:02,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-15 19:49:02,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:49:02,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 34 conjunts are in the unsatisfiable core [2022-03-15 19:49:02,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:49:02,841 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 [2022-03-15 19:49:02,850 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:49:02,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:49:02,924 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 19:49:02,925 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 28 treesize of output 13 [2022-03-15 19:49:03,000 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-15 19:49:03,000 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781781244] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:49:03,001 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:49:03,001 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 7] total 23 [2022-03-15 19:49:03,001 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [660646271] [2022-03-15 19:49:03,001 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:49:03,003 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:49:03,010 INFO L252 McrAutomatonBuilder]: Finished intersection with 50 states and 81 transitions. [2022-03-15 19:49:03,023 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:49:03,559 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [5606#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0)), 5607#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0)), 5608#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (< ~front~0 0))] [2022-03-15 19:49:03,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-15 19:49:03,559 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:49:03,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-15 19:49:03,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756 [2022-03-15 19:49:03,560 INFO L87 Difference]: Start difference. First operand 106 states and 242 transitions. Second operand has 16 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:04,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:49:04,264 INFO L93 Difference]: Finished difference Result 372 states and 865 transitions. [2022-03-15 19:49:04,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-15 19:49:04,264 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 0 states have call successors, (0), 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 21 [2022-03-15 19:49:04,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:49:04,266 INFO L225 Difference]: With dead ends: 372 [2022-03-15 19:49:04,266 INFO L226 Difference]: Without dead ends: 349 [2022-03-15 19:49:04,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 47 SyntacticMatches, 6 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=426, Invalid=2124, Unknown=0, NotChecked=0, Total=2550 [2022-03-15 19:49:04,267 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 126 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 19:49:04,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 0 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 19:49:04,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2022-03-15 19:49:04,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 122. [2022-03-15 19:49:04,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 2.28099173553719) internal successors, (276), 121 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:04,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 276 transitions. [2022-03-15 19:49:04,270 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 276 transitions. Word has length 21 [2022-03-15 19:49:04,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:49:04,271 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 276 transitions. [2022-03-15 19:49:04,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:04,271 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 276 transitions. [2022-03-15 19:49:04,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 19:49:04,271 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:49:04,271 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:49:04,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-15 19:49:04,483 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,SelfDestructingSolverStorable15 [2022-03-15 19:49:04,483 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:49:04,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:49:04,484 INFO L85 PathProgramCache]: Analyzing trace with hash 406483292, now seen corresponding path program 14 times [2022-03-15 19:49:04,485 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:49:04,485 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941944204] [2022-03-15 19:49:04,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:49:04,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:49:04,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:49:04,699 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:49:04,699 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:49:04,699 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941944204] [2022-03-15 19:49:04,699 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941944204] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:49:04,699 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637502143] [2022-03-15 19:49:04,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 19:49:04,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:49:04,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:49:04,701 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) [2022-03-15 19:49:04,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-15 19:49:04,778 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 19:49:04,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:49:04,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 33 conjunts are in the unsatisfiable core [2022-03-15 19:49:04,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:49:04,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:49:04,938 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 19 treesize of output 21 [2022-03-15 19:49:05,002 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 [2022-03-15 19:49:05,013 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-15 19:49:05,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:49:05,086 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_512 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_512) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 8)) 5)) is different from false [2022-03-15 19:49:05,095 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:49:05,095 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 47 treesize of output 47 [2022-03-15 19:49:05,098 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 14 treesize of output 7 [2022-03-15 19:49:05,215 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-15 19:49:05,215 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637502143] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:49:05,215 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:49:05,215 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 28 [2022-03-15 19:49:05,215 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1193383352] [2022-03-15 19:49:05,215 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:49:05,217 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:49:05,224 INFO L252 McrAutomatonBuilder]: Finished intersection with 45 states and 71 transitions. [2022-03-15 19:49:05,224 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:49:05,908 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [6422#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0)), 6423#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (< ~front~0 0)), 6421#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0))] [2022-03-15 19:49:05,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-15 19:49:05,908 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:49:05,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-15 19:49:05,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=862, Unknown=1, NotChecked=60, Total=1056 [2022-03-15 19:49:05,909 INFO L87 Difference]: Start difference. First operand 122 states and 276 transitions. Second operand has 17 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:06,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:49:06,348 INFO L93 Difference]: Finished difference Result 231 states and 527 transitions. [2022-03-15 19:49:06,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-15 19:49:06,348 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 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 21 [2022-03-15 19:49:06,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:49:06,349 INFO L225 Difference]: With dead ends: 231 [2022-03-15 19:49:06,349 INFO L226 Difference]: Without dead ends: 224 [2022-03-15 19:49:06,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=289, Invalid=1694, Unknown=1, NotChecked=86, Total=2070 [2022-03-15 19:49:06,350 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 78 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 19:49:06,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 0 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 19:49:06,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-03-15 19:49:06,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 120. [2022-03-15 19:49:06,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 2.2857142857142856) internal successors, (272), 119 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:06,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 272 transitions. [2022-03-15 19:49:06,353 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 272 transitions. Word has length 21 [2022-03-15 19:49:06,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:49:06,353 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 272 transitions. [2022-03-15 19:49:06,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:06,353 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 272 transitions. [2022-03-15 19:49:06,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-15 19:49:06,354 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:49:06,354 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:49:06,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-15 19:49:06,567 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,SelfDestructingSolverStorable16 [2022-03-15 19:49:06,567 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:49:06,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:49:06,568 INFO L85 PathProgramCache]: Analyzing trace with hash -38127092, now seen corresponding path program 15 times [2022-03-15 19:49:06,568 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:49:06,568 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903897631] [2022-03-15 19:49:06,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:49:06,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:49:06,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:49:06,624 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-15 19:49:06,624 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:49:06,624 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903897631] [2022-03-15 19:49:06,624 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903897631] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:49:06,624 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888386352] [2022-03-15 19:49:06,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 19:49:06,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:49:06,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:49:06,625 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) [2022-03-15 19:49:06,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-15 19:49:06,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 19:49:06,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:49:06,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 53 conjunts are in the unsatisfiable core [2022-03-15 19:49:06,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:49:06,996 INFO L353 Elim1Store]: treesize reduction 34, result has 8.1 percent of original size [2022-03-15 19:49:06,996 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 16 [2022-03-15 19:49:07,012 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-15 19:49:07,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:49:07,136 INFO L353 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2022-03-15 19:49:07,136 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 51 [2022-03-15 19:49:07,340 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-15 19:49:07,340 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888386352] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:49:07,340 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:49:07,340 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 23 [2022-03-15 19:49:07,340 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [299968727] [2022-03-15 19:49:07,341 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:49:07,343 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:49:07,352 INFO L252 McrAutomatonBuilder]: Finished intersection with 56 states and 93 transitions. [2022-03-15 19:49:07,352 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:49:07,693 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 19:49:07,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 19:49:07,694 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:49:07,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 19:49:07,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2022-03-15 19:49:07,694 INFO L87 Difference]: Start difference. First operand 120 states and 272 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:07,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:49:07,763 INFO L93 Difference]: Finished difference Result 240 states and 528 transitions. [2022-03-15 19:49:07,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-15 19:49:07,763 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 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 22 [2022-03-15 19:49:07,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:49:07,765 INFO L225 Difference]: With dead ends: 240 [2022-03-15 19:49:07,765 INFO L226 Difference]: Without dead ends: 222 [2022-03-15 19:49:07,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2022-03-15 19:49:07,766 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 35 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:49:07,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 0 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 19:49:07,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-03-15 19:49:07,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 148. [2022-03-15 19:49:07,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 2.3333333333333335) internal successors, (343), 147 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:07,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 343 transitions. [2022-03-15 19:49:07,772 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 343 transitions. Word has length 22 [2022-03-15 19:49:07,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:49:07,772 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 343 transitions. [2022-03-15 19:49:07,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:07,772 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 343 transitions. [2022-03-15 19:49:07,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-15 19:49:07,773 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:49:07,773 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:49:07,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-15 19:49:07,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:49:07,991 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:49:07,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:49:07,992 INFO L85 PathProgramCache]: Analyzing trace with hash 817337348, now seen corresponding path program 16 times [2022-03-15 19:49:07,993 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:49:07,993 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293186657] [2022-03-15 19:49:07,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:49:07,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:49:08,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:49:08,093 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 19:49:08,093 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:49:08,093 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293186657] [2022-03-15 19:49:08,093 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293186657] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:49:08,093 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47561404] [2022-03-15 19:49:08,093 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 19:49:08,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:49:08,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:49:08,094 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) [2022-03-15 19:49:08,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-15 19:49:08,195 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 19:49:08,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:49:08,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 19:49:08,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:49:08,346 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 19:49:08,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:49:08,514 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 19:49:08,514 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47561404] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:49:08,514 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:49:08,515 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2022-03-15 19:49:08,515 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2099214307] [2022-03-15 19:49:08,515 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:49:08,517 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:49:08,526 INFO L252 McrAutomatonBuilder]: Finished intersection with 45 states and 67 transitions. [2022-03-15 19:49:08,526 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:49:08,707 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [7765#(or (<= ~size~0 0) (<= ~n~0 ~front~0) (< ~front~0 0))] [2022-03-15 19:49:08,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 19:49:08,708 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:49:08,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 19:49:08,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2022-03-15 19:49:08,708 INFO L87 Difference]: Start difference. First operand 148 states and 343 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:08,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:49:08,916 INFO L93 Difference]: Finished difference Result 282 states and 594 transitions. [2022-03-15 19:49:08,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-15 19:49:08,917 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 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 23 [2022-03-15 19:49:08,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:49:08,917 INFO L225 Difference]: With dead ends: 282 [2022-03-15 19:49:08,917 INFO L226 Difference]: Without dead ends: 149 [2022-03-15 19:49:08,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=262, Invalid=860, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 19:49:08,918 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 36 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:49:08,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 0 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 19:49:08,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-03-15 19:49:08,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2022-03-15 19:49:08,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 2.324324324324324) internal successors, (344), 148 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:08,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 344 transitions. [2022-03-15 19:49:08,940 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 344 transitions. Word has length 23 [2022-03-15 19:49:08,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:49:08,940 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 344 transitions. [2022-03-15 19:49:08,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:08,941 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 344 transitions. [2022-03-15 19:49:08,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-15 19:49:08,942 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:49:08,942 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:49:08,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-15 19:49:09,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:49:09,155 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:49:09,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:49:09,156 INFO L85 PathProgramCache]: Analyzing trace with hash -322480276, now seen corresponding path program 17 times [2022-03-15 19:49:09,157 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:49:09,157 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362416558] [2022-03-15 19:49:09,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:49:09,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:49:09,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:49:09,345 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:49:09,345 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:49:09,345 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362416558] [2022-03-15 19:49:09,345 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362416558] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:49:09,345 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600887831] [2022-03-15 19:49:09,345 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 19:49:09,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:49:09,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:49:09,348 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) [2022-03-15 19:49:09,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-15 19:49:09,461 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 19:49:09,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:49:09,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 52 conjunts are in the unsatisfiable core [2022-03-15 19:49:09,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:49:09,574 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 13 treesize of output 9 [2022-03-15 19:49:09,604 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 [2022-03-15 19:49:09,632 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 [2022-03-15 19:49:09,816 INFO L353 Elim1Store]: treesize reduction 12, result has 20.0 percent of original size [2022-03-15 19:49:09,816 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 22 treesize of output 10 [2022-03-15 19:49:09,825 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:49:09,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:49:10,189 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_634 (Array Int Int)) (v_~size~0_409 Int)) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_634) c_~queue~0.base)) (.cse1 (* c_~front~0 4))) (or (not (= (select .cse0 (+ c_~queue~0.offset .cse1 (* v_~size~0_409 4) 8)) 5)) (not (< 0 v_~size~0_409)) (< (+ c_~size~0 1) v_~size~0_409) (= (select .cse0 (+ c_~queue~0.offset .cse1 12)) 5)))) is different from false [2022-03-15 19:49:10,231 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_634 (Array Int Int)) (v_~size~0_409 Int) (v_ArrVal_633 (Array Int Int))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_633) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_634) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (.cse1 (* c_~front~0 4))) (or (not (= 5 (select .cse0 (+ .cse1 (* v_~size~0_409 4) 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) (= (select .cse0 (+ .cse1 12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 5) (not (< 0 v_~size~0_409)) (< (+ c_~size~0 1) v_~size~0_409)))) is different from false [2022-03-15 19:49:10,241 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:49:10,242 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 65 treesize of output 53 [2022-03-15 19:49:10,249 INFO L353 Elim1Store]: treesize reduction 16, result has 23.8 percent of original size [2022-03-15 19:49:10,249 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 340 treesize of output 303 [2022-03-15 19:49:10,256 INFO L353 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-03-15 19:49:10,256 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 298 treesize of output 264 [2022-03-15 19:49:10,263 INFO L353 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-03-15 19:49:10,264 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 264 treesize of output 196 [2022-03-15 19:49:10,354 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 6 trivial. 4 not checked. [2022-03-15 19:49:10,355 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600887831] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:49:10,355 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:49:10,355 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 12] total 39 [2022-03-15 19:49:10,355 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2059057812] [2022-03-15 19:49:10,355 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:49:10,358 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:49:10,367 INFO L252 McrAutomatonBuilder]: Finished intersection with 46 states and 68 transitions. [2022-03-15 19:49:10,367 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:49:10,691 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [8539#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0))] [2022-03-15 19:49:10,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-15 19:49:10,692 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:49:10,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-15 19:49:10,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=1219, Unknown=2, NotChecked=154, Total=1722 [2022-03-15 19:49:10,693 INFO L87 Difference]: Start difference. First operand 149 states and 344 transitions. Second operand has 17 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:11,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:49:11,204 INFO L93 Difference]: Finished difference Result 617 states and 1422 transitions. [2022-03-15 19:49:11,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-15 19:49:11,204 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 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 24 [2022-03-15 19:49:11,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:49:11,207 INFO L225 Difference]: With dead ends: 617 [2022-03-15 19:49:11,207 INFO L226 Difference]: Without dead ends: 552 [2022-03-15 19:49:11,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=710, Invalid=2718, Unknown=2, NotChecked=230, Total=3660 [2022-03-15 19:49:11,208 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 153 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 19:49:11,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 0 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 19:49:11,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2022-03-15 19:49:11,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 181. [2022-03-15 19:49:11,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 2.561111111111111) internal successors, (461), 180 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:11,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 461 transitions. [2022-03-15 19:49:11,216 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 461 transitions. Word has length 24 [2022-03-15 19:49:11,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:49:11,216 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 461 transitions. [2022-03-15 19:49:11,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:11,216 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 461 transitions. [2022-03-15 19:49:11,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-15 19:49:11,217 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:49:11,217 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:49:11,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-03-15 19:49:11,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:49:11,435 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:49:11,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:49:11,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1686667796, now seen corresponding path program 18 times [2022-03-15 19:49:11,436 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:49:11,436 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297452034] [2022-03-15 19:49:11,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:49:11,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:49:11,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:49:11,651 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:49:11,652 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:49:11,652 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297452034] [2022-03-15 19:49:11,652 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297452034] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:49:11,652 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768814910] [2022-03-15 19:49:11,652 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 19:49:11,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:49:11,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:49:11,653 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) [2022-03-15 19:49:11,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-15 19:49:11,783 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-15 19:49:11,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:49:11,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 33 conjunts are in the unsatisfiable core [2022-03-15 19:49:11,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:49:14,037 INFO L353 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2022-03-15 19:49:14,038 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 10 [2022-03-15 19:49:14,047 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 22 refuted. 1 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 19:49:14,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:49:14,110 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 19:49:14,111 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 28 treesize of output 13 [2022-03-15 19:49:14,334 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 19:49:14,334 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768814910] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:49:14,334 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:49:14,335 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 34 [2022-03-15 19:49:14,335 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1739127038] [2022-03-15 19:49:14,335 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:49:14,338 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:49:14,348 INFO L252 McrAutomatonBuilder]: Finished intersection with 50 states and 77 transitions. [2022-03-15 19:49:14,348 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:49:14,867 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [9731#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0)), 9732#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0))] [2022-03-15 19:49:14,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-15 19:49:14,867 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:49:14,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-15 19:49:14,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1209, Unknown=1, NotChecked=0, Total=1406 [2022-03-15 19:49:14,868 INFO L87 Difference]: Start difference. First operand 181 states and 461 transitions. Second operand has 18 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:15,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:49:15,613 INFO L93 Difference]: Finished difference Result 848 states and 2102 transitions. [2022-03-15 19:49:15,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-15 19:49:15,614 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 0 states have call successors, (0), 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 24 [2022-03-15 19:49:15,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:49:15,616 INFO L225 Difference]: With dead ends: 848 [2022-03-15 19:49:15,617 INFO L226 Difference]: Without dead ends: 746 [2022-03-15 19:49:15,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 44 SyntacticMatches, 5 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 839 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=520, Invalid=3901, Unknown=1, NotChecked=0, Total=4422 [2022-03-15 19:49:15,618 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 119 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 19:49:15,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 0 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 19:49:15,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2022-03-15 19:49:15,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 189. [2022-03-15 19:49:15,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.5585106382978724) internal successors, (481), 188 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:15,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 481 transitions. [2022-03-15 19:49:15,626 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 481 transitions. Word has length 24 [2022-03-15 19:49:15,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:49:15,627 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 481 transitions. [2022-03-15 19:49:15,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:15,627 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 481 transitions. [2022-03-15 19:49:15,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-15 19:49:15,628 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:49:15,628 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:49:15,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-15 19:49:15,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:49:15,838 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:49:15,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:49:15,839 INFO L85 PathProgramCache]: Analyzing trace with hash -454251412, now seen corresponding path program 19 times [2022-03-15 19:49:15,839 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:49:15,839 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248518432] [2022-03-15 19:49:15,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:49:15,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:49:15,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:49:16,099 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:49:16,099 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:49:16,099 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248518432] [2022-03-15 19:49:16,099 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248518432] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:49:16,099 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322897095] [2022-03-15 19:49:16,099 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 19:49:16,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:49:16,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:49:16,100 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) [2022-03-15 19:49:16,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-15 19:49:16,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:49:16,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 42 conjunts are in the unsatisfiable core [2022-03-15 19:49:16,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:49:16,424 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 [2022-03-15 19:49:16,433 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:49:16,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:49:16,513 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 19:49:16,513 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 28 treesize of output 13 [2022-03-15 19:49:16,699 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-03-15 19:49:16,699 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322897095] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:49:16,699 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:49:16,699 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 8] total 29 [2022-03-15 19:49:16,699 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1450075891] [2022-03-15 19:49:16,700 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:49:16,704 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:49:16,717 INFO L252 McrAutomatonBuilder]: Finished intersection with 54 states and 86 transitions. [2022-03-15 19:49:16,717 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:49:17,366 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [11187#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0)), 11188#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (< ~front~0 0)), 11186#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0))] [2022-03-15 19:49:17,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 19:49:17,367 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:49:17,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 19:49:17,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=980, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 19:49:17,367 INFO L87 Difference]: Start difference. First operand 189 states and 481 transitions. Second operand has 19 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:18,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:49:18,175 INFO L93 Difference]: Finished difference Result 762 states and 1843 transitions. [2022-03-15 19:49:18,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-15 19:49:18,175 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 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 24 [2022-03-15 19:49:18,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:49:18,178 INFO L225 Difference]: With dead ends: 762 [2022-03-15 19:49:18,178 INFO L226 Difference]: Without dead ends: 715 [2022-03-15 19:49:18,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 47 SyntacticMatches, 10 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 878 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=668, Invalid=4162, Unknown=0, NotChecked=0, Total=4830 [2022-03-15 19:49:18,181 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 158 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 19:49:18,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 0 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 19:49:18,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2022-03-15 19:49:18,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 189. [2022-03-15 19:49:18,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.5585106382978724) internal successors, (481), 188 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:18,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 481 transitions. [2022-03-15 19:49:18,208 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 481 transitions. Word has length 24 [2022-03-15 19:49:18,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:49:18,209 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 481 transitions. [2022-03-15 19:49:18,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:18,209 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 481 transitions. [2022-03-15 19:49:18,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-15 19:49:18,209 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:49:18,209 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:49:18,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-15 19:49:18,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:49:18,427 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:49:18,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:49:18,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1896729876, now seen corresponding path program 20 times [2022-03-15 19:49:18,429 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:49:18,429 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580879534] [2022-03-15 19:49:18,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:49:18,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:49:18,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:49:18,704 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:49:18,704 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:49:18,704 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580879534] [2022-03-15 19:49:18,704 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580879534] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:49:18,704 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619920314] [2022-03-15 19:49:18,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 19:49:18,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:49:18,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:49:18,720 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) [2022-03-15 19:49:18,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-15 19:49:18,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 19:49:18,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:49:18,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 32 conjunts are in the unsatisfiable core [2022-03-15 19:49:18,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:49:18,965 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 [2022-03-15 19:49:18,970 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-15 19:49:18,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:49:19,034 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 19:49:19,035 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 28 treesize of output 13 [2022-03-15 19:49:19,101 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-15 19:49:19,102 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619920314] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:49:19,102 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:49:19,102 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 9] total 30 [2022-03-15 19:49:19,102 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [366313519] [2022-03-15 19:49:19,102 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:49:19,105 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:49:19,116 INFO L252 McrAutomatonBuilder]: Finished intersection with 60 states and 99 transitions. [2022-03-15 19:49:19,117 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:49:19,671 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [12572#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0)), 12573#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (< ~front~0 0)), 12574#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 12))) (<= ~size~0 3) (< ~front~0 0)), 12571#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0))] [2022-03-15 19:49:19,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 19:49:19,671 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:49:19,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 19:49:19,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1094, Unknown=0, NotChecked=0, Total=1260 [2022-03-15 19:49:19,672 INFO L87 Difference]: Start difference. First operand 189 states and 481 transitions. Second operand has 20 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:20,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:49:20,925 INFO L93 Difference]: Finished difference Result 784 states and 1935 transitions. [2022-03-15 19:49:20,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-15 19:49:20,926 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-03-15 19:49:20,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:49:20,929 INFO L225 Difference]: With dead ends: 784 [2022-03-15 19:49:20,929 INFO L226 Difference]: Without dead ends: 741 [2022-03-15 19:49:20,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1103 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=882, Invalid=4970, Unknown=0, NotChecked=0, Total=5852 [2022-03-15 19:49:20,931 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 211 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 19:49:20,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 0 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 19:49:20,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2022-03-15 19:49:20,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 215. [2022-03-15 19:49:20,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 2.5233644859813085) internal successors, (540), 214 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:20,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 540 transitions. [2022-03-15 19:49:20,940 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 540 transitions. Word has length 24 [2022-03-15 19:49:20,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:49:20,940 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 540 transitions. [2022-03-15 19:49:20,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:20,940 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 540 transitions. [2022-03-15 19:49:20,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-15 19:49:20,941 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:49:20,941 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:49:20,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-15 19:49:21,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:49:21,157 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:49:21,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:49:21,158 INFO L85 PathProgramCache]: Analyzing trace with hash -2000428734, now seen corresponding path program 21 times [2022-03-15 19:49:21,159 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:49:21,159 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701194101] [2022-03-15 19:49:21,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:49:21,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:49:21,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:49:21,547 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:49:21,548 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:49:21,548 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701194101] [2022-03-15 19:49:21,548 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701194101] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:49:21,548 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712293317] [2022-03-15 19:49:21,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 19:49:21,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:49:21,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:49:21,549 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) [2022-03-15 19:49:21,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-15 19:49:21,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 19:49:21,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:49:21,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 66 conjunts are in the unsatisfiable core [2022-03-15 19:49:21,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:49:22,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:49:22,245 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 43 treesize of output 39 [2022-03-15 19:49:22,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:49:22,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:49:22,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:49:22,407 INFO L353 Elim1Store]: treesize reduction 40, result has 7.0 percent of original size [2022-03-15 19:49:22,407 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 40 treesize of output 19 [2022-03-15 19:49:22,424 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-15 19:49:22,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:49:22,968 INFO L353 Elim1Store]: treesize reduction 150, result has 30.9 percent of original size [2022-03-15 19:49:22,969 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 92 treesize of output 104 [2022-03-15 19:49:22,974 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 13 treesize of output 7 [2022-03-15 19:49:23,510 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 23 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-15 19:49:23,510 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712293317] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:49:23,510 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:49:23,510 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 37 [2022-03-15 19:49:23,510 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [965667128] [2022-03-15 19:49:23,510 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:49:23,513 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:49:23,524 INFO L252 McrAutomatonBuilder]: Finished intersection with 53 states and 85 transitions. [2022-03-15 19:49:23,524 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:49:31,276 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [14051#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 12))) (<= ~size~0 3) (<= ~n~0 (+ 3 ~front~0)) (< ~front~0 0)), 14048#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (<= ~n~0 ~front~0) (< ~front~0 0)), 14049#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~n~0 (+ ~front~0 1)) (<= ~size~0 1) (< ~front~0 0)), 14050#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (<= ~n~0 (+ 2 ~front~0)) (< ~front~0 0))] [2022-03-15 19:49:31,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 19:49:31,277 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:49:31,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 19:49:31,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=1557, Unknown=8, NotChecked=0, Total=1806 [2022-03-15 19:49:31,278 INFO L87 Difference]: Start difference. First operand 215 states and 540 transitions. Second operand has 21 states, 20 states have (on average 2.65) internal successors, (53), 20 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:32,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:49:32,206 INFO L93 Difference]: Finished difference Result 450 states and 1095 transitions. [2022-03-15 19:49:32,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-15 19:49:32,206 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.65) internal successors, (53), 20 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-03-15 19:49:32,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:49:32,208 INFO L225 Difference]: With dead ends: 450 [2022-03-15 19:49:32,208 INFO L226 Difference]: Without dead ends: 443 [2022-03-15 19:49:32,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=491, Invalid=3283, Unknown=8, NotChecked=0, Total=3782 [2022-03-15 19:49:32,209 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 114 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 19:49:32,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 0 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 19:49:32,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-03-15 19:49:32,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 213. [2022-03-15 19:49:32,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 2.5283018867924527) internal successors, (536), 212 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:32,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 536 transitions. [2022-03-15 19:49:32,214 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 536 transitions. Word has length 24 [2022-03-15 19:49:32,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:49:32,214 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 536 transitions. [2022-03-15 19:49:32,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.65) internal successors, (53), 20 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:32,214 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 536 transitions. [2022-03-15 19:49:32,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-15 19:49:32,214 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:49:32,214 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:49:32,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-15 19:49:32,444 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,SelfDestructingSolverStorable23 [2022-03-15 19:49:32,445 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:49:32,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:49:32,446 INFO L85 PathProgramCache]: Analyzing trace with hash 171892880, now seen corresponding path program 22 times [2022-03-15 19:49:32,446 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:49:32,446 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086615828] [2022-03-15 19:49:32,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:49:32,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:49:32,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:49:32,491 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-15 19:49:32,492 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:49:32,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086615828] [2022-03-15 19:49:32,492 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086615828] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:49:32,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997325677] [2022-03-15 19:49:32,492 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 19:49:32,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:49:32,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:49:32,493 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) [2022-03-15 19:49:32,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-15 19:49:32,583 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 19:49:32,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:49:32,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-15 19:49:32,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:49:32,616 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-15 19:49:32,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:49:32,672 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-15 19:49:32,672 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997325677] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:49:32,672 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:49:32,672 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 7 [2022-03-15 19:49:32,672 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [668831348] [2022-03-15 19:49:32,672 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:49:32,675 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:49:32,690 INFO L252 McrAutomatonBuilder]: Finished intersection with 66 states and 111 transitions. [2022-03-15 19:49:32,690 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:49:33,062 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 19:49:33,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 19:49:33,063 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:49:33,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 19:49:33,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-03-15 19:49:33,063 INFO L87 Difference]: Start difference. First operand 213 states and 536 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:33,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:49:33,132 INFO L93 Difference]: Finished difference Result 387 states and 919 transitions. [2022-03-15 19:49:33,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 19:49:33,132 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 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 25 [2022-03-15 19:49:33,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:49:33,133 INFO L225 Difference]: With dead ends: 387 [2022-03-15 19:49:33,133 INFO L226 Difference]: Without dead ends: 365 [2022-03-15 19:49:33,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-03-15 19:49:33,134 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 46 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:49:33,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 0 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 19:49:33,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2022-03-15 19:49:33,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 253. [2022-03-15 19:49:33,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 2.5436507936507935) internal successors, (641), 252 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:33,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 641 transitions. [2022-03-15 19:49:33,139 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 641 transitions. Word has length 25 [2022-03-15 19:49:33,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:49:33,139 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 641 transitions. [2022-03-15 19:49:33,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:33,139 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 641 transitions. [2022-03-15 19:49:33,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-03-15 19:49:33,139 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:49:33,140 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:49:33,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-15 19:49:33,340 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,SelfDestructingSolverStorable24 [2022-03-15 19:49:33,340 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:49:33,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:49:33,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1261978112, now seen corresponding path program 23 times [2022-03-15 19:49:33,341 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:49:33,341 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172966669] [2022-03-15 19:49:33,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:49:33,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:49:33,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:49:33,448 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 16 proven. 17 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-03-15 19:49:33,448 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:49:33,448 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172966669] [2022-03-15 19:49:33,449 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172966669] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:49:33,449 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425176895] [2022-03-15 19:49:33,449 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 19:49:33,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:49:33,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:49:33,450 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) [2022-03-15 19:49:33,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-15 19:49:33,553 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-15 19:49:33,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:49:33,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-15 19:49:33,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:49:33,762 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-15 19:49:33,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:49:33,969 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 16 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-15 19:49:33,969 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425176895] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:49:33,969 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:49:33,969 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2022-03-15 19:49:33,970 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1313289872] [2022-03-15 19:49:33,970 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:49:33,974 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:49:33,986 INFO L252 McrAutomatonBuilder]: Finished intersection with 51 states and 76 transitions. [2022-03-15 19:49:33,986 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:49:34,187 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [16193#(or (<= ~size~0 0) (<= ~n~0 ~front~0) (< ~front~0 0))] [2022-03-15 19:49:34,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 19:49:34,188 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:49:34,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 19:49:34,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=797, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 19:49:34,189 INFO L87 Difference]: Start difference. First operand 253 states and 641 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:34,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:49:34,389 INFO L93 Difference]: Finished difference Result 479 states and 1082 transitions. [2022-03-15 19:49:34,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 19:49:34,389 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 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 26 [2022-03-15 19:49:34,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:49:34,390 INFO L225 Difference]: With dead ends: 479 [2022-03-15 19:49:34,390 INFO L226 Difference]: Without dead ends: 254 [2022-03-15 19:49:34,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=373, Invalid=1267, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 19:49:34,395 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 40 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:49:34,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 0 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 19:49:34,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-03-15 19:49:34,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2022-03-15 19:49:34,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 2.5375494071146245) internal successors, (642), 253 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:34,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 642 transitions. [2022-03-15 19:49:34,400 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 642 transitions. Word has length 26 [2022-03-15 19:49:34,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:49:34,400 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 642 transitions. [2022-03-15 19:49:34,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:34,401 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 642 transitions. [2022-03-15 19:49:34,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-15 19:49:34,401 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:49:34,401 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:49:34,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-03-15 19:49:34,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-03-15 19:49:34,626 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:49:34,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:49:34,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1557372520, now seen corresponding path program 24 times [2022-03-15 19:49:34,627 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:49:34,627 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970679200] [2022-03-15 19:49:34,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:49:34,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:49:34,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:49:34,867 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:49:34,867 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:49:34,867 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970679200] [2022-03-15 19:49:34,867 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970679200] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:49:34,867 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494969180] [2022-03-15 19:49:34,867 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 19:49:34,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:49:34,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:49:34,884 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) [2022-03-15 19:49:34,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-15 19:49:35,025 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-15 19:49:35,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:49:35,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 33 conjunts are in the unsatisfiable core [2022-03-15 19:49:35,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:49:35,293 INFO L353 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2022-03-15 19:49:35,293 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 26 treesize of output 10 [2022-03-15 19:49:35,300 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 10 proven. 29 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-15 19:49:35,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:49:35,353 INFO L353 Elim1Store]: treesize reduction 14, result has 26.3 percent of original size [2022-03-15 19:49:35,353 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 27 treesize of output 13 [2022-03-15 19:49:35,597 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 10 proven. 29 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-15 19:49:35,598 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494969180] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:49:35,598 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:49:35,598 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 13] total 41 [2022-03-15 19:49:35,598 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1893691964] [2022-03-15 19:49:35,598 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:49:35,602 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:49:35,615 INFO L252 McrAutomatonBuilder]: Finished intersection with 52 states and 77 transitions. [2022-03-15 19:49:35,615 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:49:35,868 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [17396#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0))] [2022-03-15 19:49:35,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 19:49:35,868 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:49:35,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 19:49:35,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=1609, Unknown=0, NotChecked=0, Total=1892 [2022-03-15 19:49:35,869 INFO L87 Difference]: Start difference. First operand 254 states and 642 transitions. Second operand has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:36,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:49:36,459 INFO L93 Difference]: Finished difference Result 937 states and 2222 transitions. [2022-03-15 19:49:36,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-15 19:49:36,459 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 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 27 [2022-03-15 19:49:36,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:49:36,463 INFO L225 Difference]: With dead ends: 937 [2022-03-15 19:49:36,463 INFO L226 Difference]: Without dead ends: 858 [2022-03-15 19:49:36,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1093 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=651, Invalid=4041, Unknown=0, NotChecked=0, Total=4692 [2022-03-15 19:49:36,469 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 163 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 19:49:36,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 0 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 19:49:36,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2022-03-15 19:49:36,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 260. [2022-03-15 19:49:36,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 2.583011583011583) internal successors, (669), 259 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:36,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 669 transitions. [2022-03-15 19:49:36,477 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 669 transitions. Word has length 27 [2022-03-15 19:49:36,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:49:36,477 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 669 transitions. [2022-03-15 19:49:36,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:36,477 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 669 transitions. [2022-03-15 19:49:36,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-15 19:49:36,477 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:49:36,477 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:49:36,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-03-15 19:49:36,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:49:36,691 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:49:36,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:49:36,692 INFO L85 PathProgramCache]: Analyzing trace with hash 451775552, now seen corresponding path program 25 times [2022-03-15 19:49:36,692 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:49:36,692 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388228680] [2022-03-15 19:49:36,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:49:36,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:49:36,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:49:36,972 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:49:36,973 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:49:36,973 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388228680] [2022-03-15 19:49:36,973 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388228680] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:49:36,973 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100639656] [2022-03-15 19:49:36,973 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 19:49:36,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:49:36,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:49:36,974 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) [2022-03-15 19:49:36,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-15 19:49:37,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:49:37,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 42 conjunts are in the unsatisfiable core [2022-03-15 19:49:37,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:49:37,266 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 [2022-03-15 19:49:37,271 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-15 19:49:37,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:49:37,311 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 19:49:37,311 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 28 treesize of output 13 [2022-03-15 19:49:37,448 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-03-15 19:49:37,449 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100639656] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:49:37,449 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:49:37,449 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 8] total 34 [2022-03-15 19:49:37,449 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1008824216] [2022-03-15 19:49:37,449 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:49:37,453 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:49:37,484 INFO L252 McrAutomatonBuilder]: Finished intersection with 56 states and 86 transitions. [2022-03-15 19:49:37,484 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:49:37,854 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [19097#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0)), 19096#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0))] [2022-03-15 19:49:37,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 19:49:37,854 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:49:37,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 19:49:37,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1259, Unknown=0, NotChecked=0, Total=1406 [2022-03-15 19:49:37,856 INFO L87 Difference]: Start difference. First operand 260 states and 669 transitions. Second operand has 21 states, 20 states have (on average 2.55) internal successors, (51), 20 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:38,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:49:38,807 INFO L93 Difference]: Finished difference Result 1914 states and 4648 transitions. [2022-03-15 19:49:38,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-15 19:49:38,807 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.55) internal successors, (51), 20 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-15 19:49:38,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:49:38,816 INFO L225 Difference]: With dead ends: 1914 [2022-03-15 19:49:38,816 INFO L226 Difference]: Without dead ends: 1749 [2022-03-15 19:49:38,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 49 SyntacticMatches, 12 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1152 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=650, Invalid=5512, Unknown=0, NotChecked=0, Total=6162 [2022-03-15 19:49:38,829 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 219 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 19:49:38,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 0 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 19:49:38,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1749 states. [2022-03-15 19:49:38,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1749 to 358. [2022-03-15 19:49:38,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 2.8151260504201683) internal successors, (1005), 357 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:38,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 1005 transitions. [2022-03-15 19:49:38,841 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 1005 transitions. Word has length 27 [2022-03-15 19:49:38,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:49:38,841 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 1005 transitions. [2022-03-15 19:49:38,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.55) internal successors, (51), 20 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:38,841 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 1005 transitions. [2022-03-15 19:49:38,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-15 19:49:38,842 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:49:38,842 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:49:38,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-03-15 19:49:39,055 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,SelfDestructingSolverStorable27 [2022-03-15 19:49:39,055 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:49:39,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:49:39,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1689143656, now seen corresponding path program 26 times [2022-03-15 19:49:39,057 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:49:39,057 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497200291] [2022-03-15 19:49:39,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:49:39,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:49:39,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:49:39,311 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:49:39,311 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:49:39,312 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497200291] [2022-03-15 19:49:39,312 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497200291] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:49:39,312 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210911243] [2022-03-15 19:49:39,312 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 19:49:39,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:49:39,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:49:39,313 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) [2022-03-15 19:49:39,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-15 19:49:39,417 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 19:49:39,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:49:39,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 40 conjunts are in the unsatisfiable core [2022-03-15 19:49:39,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:49:39,608 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 [2022-03-15 19:49:39,613 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-15 19:49:39,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:49:39,680 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 19:49:39,680 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 28 treesize of output 13 [2022-03-15 19:49:39,817 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-03-15 19:49:39,817 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210911243] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:49:39,817 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:49:39,817 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 9] total 35 [2022-03-15 19:49:39,818 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [118526607] [2022-03-15 19:49:39,819 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:49:39,828 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:49:39,842 INFO L252 McrAutomatonBuilder]: Finished intersection with 60 states and 95 transitions. [2022-03-15 19:49:39,842 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:49:40,444 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [22004#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0)), 22005#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (< ~front~0 0)), 22003#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0))] [2022-03-15 19:49:40,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 19:49:40,445 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:49:40,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 19:49:40,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1392, Unknown=0, NotChecked=0, Total=1560 [2022-03-15 19:49:40,445 INFO L87 Difference]: Start difference. First operand 358 states and 1005 transitions. Second operand has 22 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 21 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:42,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:49:42,280 INFO L93 Difference]: Finished difference Result 1989 states and 5129 transitions. [2022-03-15 19:49:42,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-03-15 19:49:42,280 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 21 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-15 19:49:42,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:49:42,286 INFO L225 Difference]: With dead ends: 1989 [2022-03-15 19:49:42,286 INFO L226 Difference]: Without dead ends: 1801 [2022-03-15 19:49:42,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 53 SyntacticMatches, 10 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1818 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1048, Invalid=7882, Unknown=0, NotChecked=0, Total=8930 [2022-03-15 19:49:42,292 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 195 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 19:49:42,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 0 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 19:49:42,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1801 states. [2022-03-15 19:49:42,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1801 to 366. [2022-03-15 19:49:42,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 365 states have (on average 2.808219178082192) internal successors, (1025), 365 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:42,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 1025 transitions. [2022-03-15 19:49:42,323 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 1025 transitions. Word has length 27 [2022-03-15 19:49:42,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:49:42,323 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 1025 transitions. [2022-03-15 19:49:42,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 21 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:42,323 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 1025 transitions. [2022-03-15 19:49:42,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-15 19:49:42,324 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:49:42,324 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:49:42,342 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-03-15 19:49:42,541 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,SelfDestructingSolverStorable28 [2022-03-15 19:49:42,541 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:49:42,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:49:42,542 INFO L85 PathProgramCache]: Analyzing trace with hash 661837632, now seen corresponding path program 27 times [2022-03-15 19:49:42,543 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:49:42,543 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327574318] [2022-03-15 19:49:42,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:49:42,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:49:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:49:42,822 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:49:42,822 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:49:42,822 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327574318] [2022-03-15 19:49:42,822 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327574318] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:49:42,822 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785867406] [2022-03-15 19:49:42,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 19:49:42,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:49:42,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:49:42,832 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) [2022-03-15 19:49:42,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-15 19:49:43,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-15 19:49:43,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:49:43,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 52 conjunts are in the unsatisfiable core [2022-03-15 19:49:43,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:49:43,223 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 [2022-03-15 19:49:43,262 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 [2022-03-15 19:49:43,288 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 [2022-03-15 19:49:43,791 INFO L353 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2022-03-15 19:49:43,792 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 26 treesize of output 10 [2022-03-15 19:49:43,798 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 11 proven. 28 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-15 19:49:43,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:49:45,012 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:49:45,012 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 63 treesize of output 51 [2022-03-15 19:49:45,021 INFO L353 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2022-03-15 19:49:45,022 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 152 treesize of output 144 [2022-03-15 19:49:45,029 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-03-15 19:49:45,029 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 133 treesize of output 103 [2022-03-15 19:49:45,036 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-03-15 19:49:45,037 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 82 treesize of output 67 [2022-03-15 19:49:45,246 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 32 refuted. 4 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-15 19:49:45,246 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785867406] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:49:45,246 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:49:45,246 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 14] total 43 [2022-03-15 19:49:45,246 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1877939771] [2022-03-15 19:49:45,246 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:49:45,250 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:49:45,265 INFO L252 McrAutomatonBuilder]: Finished intersection with 64 states and 104 transitions. [2022-03-15 19:49:45,265 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:49:45,825 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [25039#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0)), 25038#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0)), 25040#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (< ~front~0 0)), 25041#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 12))) (<= ~size~0 3) (< ~front~0 0))] [2022-03-15 19:49:45,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-15 19:49:45,825 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:49:45,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-15 19:49:45,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=2023, Unknown=7, NotChecked=0, Total=2352 [2022-03-15 19:49:45,826 INFO L87 Difference]: Start difference. First operand 366 states and 1025 transitions. Second operand has 23 states, 22 states have (on average 2.772727272727273) internal successors, (61), 22 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:47,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:49:47,260 INFO L93 Difference]: Finished difference Result 1567 states and 3922 transitions. [2022-03-15 19:49:47,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-15 19:49:47,261 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.772727272727273) internal successors, (61), 22 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-15 19:49:47,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:49:47,270 INFO L225 Difference]: With dead ends: 1567 [2022-03-15 19:49:47,270 INFO L226 Difference]: Without dead ends: 1460 [2022-03-15 19:49:47,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 52 SyntacticMatches, 6 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2609 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1286, Invalid=9213, Unknown=7, NotChecked=0, Total=10506 [2022-03-15 19:49:47,272 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 296 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 19:49:47,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 0 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 677 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 19:49:47,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2022-03-15 19:49:47,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 368. [2022-03-15 19:49:47,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 367 states have (on average 2.8065395095367847) internal successors, (1030), 367 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:47,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 1030 transitions. [2022-03-15 19:49:47,284 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 1030 transitions. Word has length 27 [2022-03-15 19:49:47,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:49:47,285 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 1030 transitions. [2022-03-15 19:49:47,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.772727272727273) internal successors, (61), 22 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:47,285 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 1030 transitions. [2022-03-15 19:49:47,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-15 19:49:47,285 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:49:47,285 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:49:47,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-03-15 19:49:47,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:49:47,500 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:49:47,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:49:47,500 INFO L85 PathProgramCache]: Analyzing trace with hash 527813528, now seen corresponding path program 28 times [2022-03-15 19:49:47,501 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:49:47,501 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74222952] [2022-03-15 19:49:47,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:49:47,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:49:47,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:49:47,807 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:49:47,808 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:49:47,808 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74222952] [2022-03-15 19:49:47,808 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74222952] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:49:47,808 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704268088] [2022-03-15 19:49:47,808 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 19:49:47,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:49:47,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:49:47,809 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) [2022-03-15 19:49:47,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-15 19:49:47,915 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 19:49:47,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:49:47,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 36 conjunts are in the unsatisfiable core [2022-03-15 19:49:47,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:49:48,161 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 [2022-03-15 19:49:48,169 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-15 19:49:48,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:49:48,290 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 19:49:48,290 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 28 treesize of output 13 [2022-03-15 19:49:48,419 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-15 19:49:48,419 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704268088] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:49:48,419 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:49:48,420 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 11] total 37 [2022-03-15 19:49:48,420 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [85847633] [2022-03-15 19:49:48,420 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:49:48,423 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:49:48,453 INFO L252 McrAutomatonBuilder]: Finished intersection with 70 states and 117 transitions. [2022-03-15 19:49:48,453 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:49:49,391 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [27649#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0)), 27652#(or (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) 16 ~queue~0.offset)) 5) (<= ~size~0 4) (< ~front~0 0)), 27648#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0)), 27650#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (< ~front~0 0)), 27651#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 12))) (<= ~size~0 3) (< ~front~0 0))] [2022-03-15 19:49:49,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-15 19:49:49,391 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:49:49,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-15 19:49:49,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1674, Unknown=0, NotChecked=0, Total=1892 [2022-03-15 19:49:49,393 INFO L87 Difference]: Start difference. First operand 368 states and 1030 transitions. Second operand has 24 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 23 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:51,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:49:51,581 INFO L93 Difference]: Finished difference Result 1757 states and 4546 transitions. [2022-03-15 19:49:51,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-03-15 19:49:51,582 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 23 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-15 19:49:51,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:49:51,587 INFO L225 Difference]: With dead ends: 1757 [2022-03-15 19:49:51,587 INFO L226 Difference]: Without dead ends: 1678 [2022-03-15 19:49:51,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 62 SyntacticMatches, 7 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2705 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1708, Invalid=10282, Unknown=0, NotChecked=0, Total=11990 [2022-03-15 19:49:51,598 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 379 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 19:49:51,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [379 Valid, 0 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 19:49:51,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1678 states. [2022-03-15 19:49:51,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1678 to 402. [2022-03-15 19:49:51,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 2.7655860349127184) internal successors, (1109), 401 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:51,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 1109 transitions. [2022-03-15 19:49:51,625 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 1109 transitions. Word has length 27 [2022-03-15 19:49:51,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:49:51,625 INFO L470 AbstractCegarLoop]: Abstraction has 402 states and 1109 transitions. [2022-03-15 19:49:51,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 23 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:51,625 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 1109 transitions. [2022-03-15 19:49:51,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-15 19:49:51,626 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:49:51,626 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:49:51,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-03-15 19:49:51,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:49:51,843 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:49:51,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:49:51,844 INFO L85 PathProgramCache]: Analyzing trace with hash 739965468, now seen corresponding path program 29 times [2022-03-15 19:49:51,844 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:49:51,845 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264282941] [2022-03-15 19:49:51,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:49:51,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:49:51,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:49:52,152 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:49:52,153 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:49:52,153 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264282941] [2022-03-15 19:49:52,153 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264282941] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:49:52,153 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776679976] [2022-03-15 19:49:52,153 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 19:49:52,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:49:52,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:49:52,154 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) [2022-03-15 19:49:52,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-15 19:49:52,308 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-15 19:49:52,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:49:52,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 57 conjunts are in the unsatisfiable core [2022-03-15 19:49:52,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:49:52,480 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 13 treesize of output 9 [2022-03-15 19:49:52,512 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 [2022-03-15 19:49:52,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:49:52,703 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 19 treesize of output 21 [2022-03-15 19:49:52,854 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 [2022-03-15 19:49:52,863 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:49:52,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:49:53,014 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1171 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1171) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 16)))) is different from false [2022-03-15 19:49:53,286 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1170 (Array Int Int)) (v_ArrVal_1171 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1170)) (.cse1 (* c_~front~0 4))) (or (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1171) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ .cse1 16 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 5) (not (= (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* c_~size~0 4) .cse1 16 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 5))))) is different from false [2022-03-15 19:49:53,293 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:49:53,293 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 62 treesize of output 50 [2022-03-15 19:49:53,298 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:49:53,299 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 112 treesize of output 112 [2022-03-15 19:49:53,302 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 63 treesize of output 49 [2022-03-15 19:49:53,310 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:49:53,310 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 56 treesize of output 60 [2022-03-15 19:49:53,412 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 10 trivial. 5 not checked. [2022-03-15 19:49:53,412 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776679976] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:49:53,412 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:49:53,412 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 14] total 47 [2022-03-15 19:49:53,413 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1300889173] [2022-03-15 19:49:53,413 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:49:53,416 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:49:53,429 INFO L252 McrAutomatonBuilder]: Finished intersection with 61 states and 99 transitions. [2022-03-15 19:49:53,430 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:49:54,344 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [30552#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0)), 30554#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 12))) (<= ~size~0 3) (< ~front~0 0)), 30553#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (< ~front~0 0)), 30555#(or (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) 16 ~queue~0.offset)) 5) (<= ~size~0 4) (< ~front~0 0)), 30551#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0))] [2022-03-15 19:49:54,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-15 19:49:54,345 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:49:54,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-15 19:49:54,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=2387, Unknown=2, NotChecked=202, Total=2862 [2022-03-15 19:49:54,346 INFO L87 Difference]: Start difference. First operand 402 states and 1109 transitions. Second operand has 24 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:55,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:49:55,580 INFO L93 Difference]: Finished difference Result 875 states and 2270 transitions. [2022-03-15 19:49:55,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-15 19:49:55,581 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-15 19:49:55,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:49:55,583 INFO L225 Difference]: With dead ends: 875 [2022-03-15 19:49:55,584 INFO L226 Difference]: Without dead ends: 868 [2022-03-15 19:49:55,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=748, Invalid=5264, Unknown=2, NotChecked=306, Total=6320 [2022-03-15 19:49:55,585 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 172 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 19:49:55,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 0 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 19:49:55,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2022-03-15 19:49:55,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 400. [2022-03-15 19:49:55,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 399 states have (on average 2.769423558897243) internal successors, (1105), 399 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:55,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 1105 transitions. [2022-03-15 19:49:55,594 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 1105 transitions. Word has length 27 [2022-03-15 19:49:55,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:49:55,594 INFO L470 AbstractCegarLoop]: Abstraction has 400 states and 1105 transitions. [2022-03-15 19:49:55,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:55,594 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 1105 transitions. [2022-03-15 19:49:55,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-15 19:49:55,595 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:49:55,595 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:49:55,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-03-15 19:49:55,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:49:55,812 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:49:55,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:49:55,813 INFO L85 PathProgramCache]: Analyzing trace with hash 685159052, now seen corresponding path program 30 times [2022-03-15 19:49:55,813 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:49:55,813 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342866030] [2022-03-15 19:49:55,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:49:55,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:49:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:49:55,860 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-15 19:49:55,860 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:49:55,860 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342866030] [2022-03-15 19:49:55,860 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342866030] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:49:55,860 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023961654] [2022-03-15 19:49:55,860 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 19:49:55,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:49:55,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:49:55,862 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) [2022-03-15 19:49:55,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-15 19:49:56,178 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-15 19:49:56,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:49:56,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-15 19:49:56,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:49:56,276 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 26 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-15 19:49:56,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:49:56,389 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 26 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-15 19:49:56,389 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023961654] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:49:56,389 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:49:56,389 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14, 14] total 22 [2022-03-15 19:49:56,390 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1934461344] [2022-03-15 19:49:56,390 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:49:56,404 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:49:56,423 INFO L252 McrAutomatonBuilder]: Finished intersection with 76 states and 129 transitions. [2022-03-15 19:49:56,423 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:49:56,789 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 19:49:56,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-15 19:49:56,789 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:49:56,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-15 19:49:56,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-03-15 19:49:56,790 INFO L87 Difference]: Start difference. First operand 400 states and 1105 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:56,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:49:56,876 INFO L93 Difference]: Finished difference Result 660 states and 1701 transitions. [2022-03-15 19:49:56,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-15 19:49:56,877 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-03-15 19:49:56,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:49:56,879 INFO L225 Difference]: With dead ends: 660 [2022-03-15 19:49:56,879 INFO L226 Difference]: Without dead ends: 634 [2022-03-15 19:49:56,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 90 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-03-15 19:49:56,879 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 50 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:49:56,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 0 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 19:49:56,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2022-03-15 19:49:56,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 464. [2022-03-15 19:49:56,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 463 states have (on average 2.760259179265659) internal successors, (1278), 463 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:56,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 1278 transitions. [2022-03-15 19:49:56,886 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 1278 transitions. Word has length 28 [2022-03-15 19:49:56,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:49:56,886 INFO L470 AbstractCegarLoop]: Abstraction has 464 states and 1278 transitions. [2022-03-15 19:49:56,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:56,887 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 1278 transitions. [2022-03-15 19:49:56,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-15 19:49:56,888 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:49:56,888 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:49:56,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-03-15 19:49:57,104 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 [2022-03-15 19:49:57,105 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:49:57,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:49:57,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1764371332, now seen corresponding path program 31 times [2022-03-15 19:49:57,106 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:49:57,106 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089842973] [2022-03-15 19:49:57,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:49:57,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:49:57,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:49:57,240 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 24 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-03-15 19:49:57,240 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:49:57,240 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089842973] [2022-03-15 19:49:57,240 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089842973] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:49:57,240 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314607693] [2022-03-15 19:49:57,241 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 19:49:57,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:49:57,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:49:57,242 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) [2022-03-15 19:49:57,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-03-15 19:49:57,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:49:57,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-15 19:49:57,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:49:57,621 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 31 proven. 15 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-03-15 19:49:57,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:49:57,930 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 26 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-03-15 19:49:57,930 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314607693] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:49:57,930 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:49:57,930 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 37 [2022-03-15 19:49:57,931 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1484113807] [2022-03-15 19:49:57,931 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:49:57,935 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:49:57,979 INFO L252 McrAutomatonBuilder]: Finished intersection with 57 states and 85 transitions. [2022-03-15 19:49:57,979 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:49:58,287 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [34262#(or (<= ~size~0 0) (<= ~n~0 ~front~0) (< ~front~0 0))] [2022-03-15 19:49:58,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-15 19:49:58,287 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:49:58,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-15 19:49:58,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=364, Invalid=1118, Unknown=0, NotChecked=0, Total=1482 [2022-03-15 19:49:58,288 INFO L87 Difference]: Start difference. First operand 464 states and 1278 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:58,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:49:58,624 INFO L93 Difference]: Finished difference Result 860 states and 2072 transitions. [2022-03-15 19:49:58,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-15 19:49:58,625 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 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 29 [2022-03-15 19:49:58,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:49:58,626 INFO L225 Difference]: With dead ends: 860 [2022-03-15 19:49:58,626 INFO L226 Difference]: Without dead ends: 465 [2022-03-15 19:49:58,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=510, Invalid=1746, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 19:49:58,627 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 44 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:49:58,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 0 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 19:49:58,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2022-03-15 19:49:58,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 465. [2022-03-15 19:49:58,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 464 states have (on average 2.7564655172413794) internal successors, (1279), 464 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:58,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 1279 transitions. [2022-03-15 19:49:58,633 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 1279 transitions. Word has length 29 [2022-03-15 19:49:58,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:49:58,633 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 1279 transitions. [2022-03-15 19:49:58,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:49:58,633 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 1279 transitions. [2022-03-15 19:49:58,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-15 19:49:58,634 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:49:58,634 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:49:58,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-03-15 19:49:58,851 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 [2022-03-15 19:49:58,851 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:49:58,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:49:58,852 INFO L85 PathProgramCache]: Analyzing trace with hash 2057552108, now seen corresponding path program 32 times [2022-03-15 19:49:58,853 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:49:58,853 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940473862] [2022-03-15 19:49:58,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:49:58,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:49:58,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:49:59,142 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-15 19:49:59,142 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:49:59,142 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940473862] [2022-03-15 19:49:59,142 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940473862] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:49:59,142 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963105557] [2022-03-15 19:49:59,142 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 19:49:59,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:49:59,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:49:59,144 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) [2022-03-15 19:49:59,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-03-15 19:49:59,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 19:49:59,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:49:59,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 53 conjunts are in the unsatisfiable core [2022-03-15 19:49:59,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:49:59,661 INFO L353 Elim1Store]: treesize reduction 12, result has 20.0 percent of original size [2022-03-15 19:49:59,661 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 22 treesize of output 10 [2022-03-15 19:49:59,669 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:49:59,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:49:59,706 INFO L353 Elim1Store]: treesize reduction 14, result has 26.3 percent of original size [2022-03-15 19:49:59,706 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 27 treesize of output 13 [2022-03-15 19:49:59,905 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 15 proven. 27 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-03-15 19:49:59,905 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963105557] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:49:59,905 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:49:59,905 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18, 9] total 40 [2022-03-15 19:49:59,905 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [774339968] [2022-03-15 19:49:59,905 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:49:59,910 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:49:59,953 INFO L252 McrAutomatonBuilder]: Finished intersection with 58 states and 86 transitions. [2022-03-15 19:49:59,953 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:50:00,379 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [36287#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (<= ~n~0 ~front~0) (< ~front~0 0))] [2022-03-15 19:50:00,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-15 19:50:00,379 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:50:00,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-15 19:50:00,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=1549, Unknown=0, NotChecked=0, Total=1806 [2022-03-15 19:50:00,380 INFO L87 Difference]: Start difference. First operand 465 states and 1279 transitions. Second operand has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:50:00,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:50:00,777 INFO L93 Difference]: Finished difference Result 1440 states and 3824 transitions. [2022-03-15 19:50:00,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-15 19:50:00,777 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 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 30 [2022-03-15 19:50:00,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:50:00,782 INFO L225 Difference]: With dead ends: 1440 [2022-03-15 19:50:00,782 INFO L226 Difference]: Without dead ends: 1425 [2022-03-15 19:50:00,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=334, Invalid=2216, Unknown=0, NotChecked=0, Total=2550 [2022-03-15 19:50:00,783 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 52 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 19:50:00,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 0 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 19:50:00,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1425 states. [2022-03-15 19:50:00,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1425 to 699. [2022-03-15 19:50:00,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 698 states have (on average 2.815186246418338) internal successors, (1965), 698 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:50:00,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1965 transitions. [2022-03-15 19:50:00,795 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1965 transitions. Word has length 30 [2022-03-15 19:50:00,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:50:00,795 INFO L470 AbstractCegarLoop]: Abstraction has 699 states and 1965 transitions. [2022-03-15 19:50:00,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:50:00,795 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1965 transitions. [2022-03-15 19:50:00,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-15 19:50:00,796 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:50:00,797 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:50:00,824 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-03-15 19:50:01,024 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 [2022-03-15 19:50:01,024 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:50:01,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:50:01,024 INFO L85 PathProgramCache]: Analyzing trace with hash -228267116, now seen corresponding path program 33 times [2022-03-15 19:50:01,025 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:50:01,025 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42537838] [2022-03-15 19:50:01,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:50:01,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:50:01,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:50:01,294 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-03-15 19:50:01,294 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:50:01,294 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42537838] [2022-03-15 19:50:01,294 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42537838] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:50:01,294 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594636596] [2022-03-15 19:50:01,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 19:50:01,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:50:01,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:50:01,308 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) [2022-03-15 19:50:01,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-03-15 19:50:01,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-15 19:50:01,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:50:01,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 78 conjunts are in the unsatisfiable core [2022-03-15 19:50:01,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:50:01,823 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 13 treesize of output 9 [2022-03-15 19:50:01,864 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 [2022-03-15 19:50:01,898 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 [2022-03-15 19:50:04,306 INFO L353 Elim1Store]: treesize reduction 94, result has 3.1 percent of original size [2022-03-15 19:50:04,306 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 16 [2022-03-15 19:50:04,316 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 56 refuted. 1 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 19:50:04,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:50:07,451 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:50:07,451 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 132 treesize of output 96 [2022-03-15 19:50:07,480 INFO L353 Elim1Store]: treesize reduction 61, result has 54.1 percent of original size [2022-03-15 19:50:07,480 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 704 treesize of output 687 [2022-03-15 19:50:07,502 INFO L353 Elim1Store]: treesize reduction 90, result has 32.3 percent of original size [2022-03-15 19:50:07,503 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 616 treesize of output 514 [2022-03-15 19:50:07,525 INFO L353 Elim1Store]: treesize reduction 90, result has 32.3 percent of original size [2022-03-15 19:50:07,525 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 472 treesize of output 442 [2022-03-15 19:50:08,228 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 1 proven. 59 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 19:50:08,228 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594636596] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:50:08,229 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:50:08,229 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 19, 19] total 50 [2022-03-15 19:50:08,229 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1461650748] [2022-03-15 19:50:08,229 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:50:08,233 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:50:08,251 INFO L252 McrAutomatonBuilder]: Finished intersection with 62 states and 95 transitions. [2022-03-15 19:50:08,251 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:50:08,788 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [39368#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0)), 39369#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0))] [2022-03-15 19:50:08,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-15 19:50:08,788 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:50:08,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-15 19:50:08,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=2576, Unknown=10, NotChecked=0, Total=2862 [2022-03-15 19:50:08,789 INFO L87 Difference]: Start difference. First operand 699 states and 1965 transitions. Second operand has 18 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:50:09,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:50:09,775 INFO L93 Difference]: Finished difference Result 1541 states and 4141 transitions. [2022-03-15 19:50:09,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-15 19:50:09,776 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 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 30 [2022-03-15 19:50:09,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:50:09,780 INFO L225 Difference]: With dead ends: 1541 [2022-03-15 19:50:09,780 INFO L226 Difference]: Without dead ends: 1491 [2022-03-15 19:50:09,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=470, Invalid=5220, Unknown=10, NotChecked=0, Total=5700 [2022-03-15 19:50:09,781 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 67 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 19:50:09,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 0 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 19:50:09,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1491 states. [2022-03-15 19:50:09,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1491 to 711. [2022-03-15 19:50:09,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 710 states have (on average 2.807042253521127) internal successors, (1993), 710 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:50:09,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 1993 transitions. [2022-03-15 19:50:09,793 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 1993 transitions. Word has length 30 [2022-03-15 19:50:09,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:50:09,793 INFO L470 AbstractCegarLoop]: Abstraction has 711 states and 1993 transitions. [2022-03-15 19:50:09,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:50:09,793 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 1993 transitions. [2022-03-15 19:50:09,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-15 19:50:09,794 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:50:09,794 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:50:09,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-03-15 19:50:10,010 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 [2022-03-15 19:50:10,010 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:50:10,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:50:10,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1925780972, now seen corresponding path program 34 times [2022-03-15 19:50:10,011 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:50:10,011 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695709074] [2022-03-15 19:50:10,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:50:10,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:50:10,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:50:10,297 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-03-15 19:50:10,297 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:50:10,297 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695709074] [2022-03-15 19:50:10,297 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695709074] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:50:10,297 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826073718] [2022-03-15 19:50:10,298 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 19:50:10,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:50:10,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:50:10,300 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) [2022-03-15 19:50:10,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-03-15 19:50:10,444 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 19:50:10,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:50:10,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 58 conjunts are in the unsatisfiable core [2022-03-15 19:50:10,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:50:10,796 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 [2022-03-15 19:50:10,803 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:50:10,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:50:10,868 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 19:50:10,868 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 28 treesize of output 13 [2022-03-15 19:50:11,113 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-03-15 19:50:11,114 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826073718] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:50:11,114 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:50:11,114 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 18, 10] total 40 [2022-03-15 19:50:11,114 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [597077681] [2022-03-15 19:50:11,114 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:50:11,131 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:50:11,181 INFO L252 McrAutomatonBuilder]: Finished intersection with 66 states and 104 transitions. [2022-03-15 19:50:11,182 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:50:12,001 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [42593#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0)), 42594#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0)), 42595#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (< ~front~0 0))] [2022-03-15 19:50:12,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 19:50:12,001 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:50:12,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 19:50:12,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1801, Unknown=0, NotChecked=0, Total=1980 [2022-03-15 19:50:12,001 INFO L87 Difference]: Start difference. First operand 711 states and 1993 transitions. Second operand has 19 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:50:13,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:50:13,222 INFO L93 Difference]: Finished difference Result 1977 states and 5283 transitions. [2022-03-15 19:50:13,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-15 19:50:13,222 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-03-15 19:50:13,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:50:13,226 INFO L225 Difference]: With dead ends: 1977 [2022-03-15 19:50:13,227 INFO L226 Difference]: Without dead ends: 1950 [2022-03-15 19:50:13,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 54 SyntacticMatches, 10 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 971 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=580, Invalid=5582, Unknown=0, NotChecked=0, Total=6162 [2022-03-15 19:50:13,227 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 110 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 19:50:13,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 0 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 19:50:13,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1950 states. [2022-03-15 19:50:13,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1950 to 711. [2022-03-15 19:50:13,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 710 states have (on average 2.807042253521127) internal successors, (1993), 710 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:50:13,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 1993 transitions. [2022-03-15 19:50:13,243 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 1993 transitions. Word has length 30 [2022-03-15 19:50:13,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:50:13,243 INFO L470 AbstractCegarLoop]: Abstraction has 711 states and 1993 transitions. [2022-03-15 19:50:13,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:50:13,243 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 1993 transitions. [2022-03-15 19:50:13,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-15 19:50:13,245 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:50:13,245 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:50:13,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-03-15 19:50:13,478 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,SelfDestructingSolverStorable36 [2022-03-15 19:50:13,478 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:50:13,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:50:13,478 INFO L85 PathProgramCache]: Analyzing trace with hash -18205036, now seen corresponding path program 35 times [2022-03-15 19:50:13,479 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:50:13,479 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751943844] [2022-03-15 19:50:13,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:50:13,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:50:13,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:50:13,738 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-03-15 19:50:13,738 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:50:13,738 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751943844] [2022-03-15 19:50:13,738 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751943844] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:50:13,738 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981477503] [2022-03-15 19:50:13,738 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 19:50:13,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:50:13,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:50:13,739 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) [2022-03-15 19:50:13,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-03-15 19:50:13,970 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 19:50:13,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:50:13,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 67 conjunts are in the unsatisfiable core [2022-03-15 19:50:13,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:50:14,170 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 13 treesize of output 9 [2022-03-15 19:50:14,202 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 [2022-03-15 19:50:14,238 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 [2022-03-15 19:50:14,544 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 [2022-03-15 19:50:14,550 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:50:14,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:50:14,873 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1471 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1471) c_~queue~0.base)) (.cse1 (* c_~front~0 4))) (or (not (= 5 (select .cse0 (+ (* c_~size~0 4) c_~queue~0.offset .cse1 20)))) (= 5 (select .cse0 (+ c_~queue~0.offset .cse1 20)))))) is different from false [2022-03-15 19:50:14,915 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1471 (Array Int Int)) (v_ArrVal_1470 (Array Int Int))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1470) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1471) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (.cse1 (* c_~front~0 4))) (or (not (= 5 (select .cse0 (+ (* c_~size~0 4) .cse1 20 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) (= 5 (select .cse0 (+ .cse1 20 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))))) is different from false [2022-03-15 19:50:14,921 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:50:14,921 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 53 [2022-03-15 19:50:14,926 INFO L353 Elim1Store]: treesize reduction 16, result has 23.8 percent of original size [2022-03-15 19:50:14,926 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 160 treesize of output 144 [2022-03-15 19:50:14,929 INFO L353 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-03-15 19:50:14,929 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 139 treesize of output 105 [2022-03-15 19:50:14,933 INFO L353 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-03-15 19:50:14,933 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 84 treesize of output 67 [2022-03-15 19:50:14,973 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 15 trivial. 6 not checked. [2022-03-15 19:50:14,974 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981477503] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:50:14,974 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:50:14,974 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 21, 16] total 49 [2022-03-15 19:50:14,974 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [577141166] [2022-03-15 19:50:14,974 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:50:14,978 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:50:15,019 INFO L252 McrAutomatonBuilder]: Finished intersection with 70 states and 113 transitions. [2022-03-15 19:50:15,019 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:50:15,780 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [46290#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (< ~front~0 0)), 46291#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 12))) (<= ~size~0 3) (< ~front~0 0)), 46288#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0)), 46289#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0))] [2022-03-15 19:50:15,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 19:50:15,780 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:50:15,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 19:50:15,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=2498, Unknown=2, NotChecked=206, Total=2970 [2022-03-15 19:50:15,781 INFO L87 Difference]: Start difference. First operand 711 states and 1993 transitions. Second operand has 20 states, 19 states have (on average 3.263157894736842) internal successors, (62), 19 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:50:17,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:50:17,625 INFO L93 Difference]: Finished difference Result 2446 states and 6485 transitions. [2022-03-15 19:50:17,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-15 19:50:17,625 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.263157894736842) internal successors, (62), 19 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-03-15 19:50:17,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:50:17,630 INFO L225 Difference]: With dead ends: 2446 [2022-03-15 19:50:17,630 INFO L226 Difference]: Without dead ends: 2367 [2022-03-15 19:50:17,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 102 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1665 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1039, Invalid=9269, Unknown=2, NotChecked=402, Total=10712 [2022-03-15 19:50:17,632 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 178 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 19:50:17,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 0 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 19:50:17,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2367 states. [2022-03-15 19:50:17,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2367 to 725. [2022-03-15 19:50:17,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 724 states have (on average 2.8066298342541436) internal successors, (2032), 724 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:50:17,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 2032 transitions. [2022-03-15 19:50:17,648 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 2032 transitions. Word has length 30 [2022-03-15 19:50:17,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:50:17,648 INFO L470 AbstractCegarLoop]: Abstraction has 725 states and 2032 transitions. [2022-03-15 19:50:17,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.263157894736842) internal successors, (62), 19 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:50:17,648 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 2032 transitions. [2022-03-15 19:50:17,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-15 19:50:17,649 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:50:17,649 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:50:17,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-03-15 19:50:17,862 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,SelfDestructingSolverStorable37 [2022-03-15 19:50:17,862 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:50:17,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:50:17,863 INFO L85 PathProgramCache]: Analyzing trace with hash -152229140, now seen corresponding path program 36 times [2022-03-15 19:50:17,864 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:50:17,864 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330603716] [2022-03-15 19:50:17,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:50:17,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:50:17,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:50:18,112 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-03-15 19:50:18,113 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:50:18,113 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330603716] [2022-03-15 19:50:18,113 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330603716] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:50:18,113 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5368860] [2022-03-15 19:50:18,113 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 19:50:18,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:50:18,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:50:18,128 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) [2022-03-15 19:50:18,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-03-15 19:50:18,267 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-15 19:50:18,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:50:18,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 51 conjunts are in the unsatisfiable core [2022-03-15 19:50:18,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:50:18,704 INFO L353 Elim1Store]: treesize reduction 12, result has 20.0 percent of original size [2022-03-15 19:50:18,704 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 22 treesize of output 10 [2022-03-15 19:50:18,711 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-15 19:50:18,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:50:18,849 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 19:50:18,850 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 28 treesize of output 13 [2022-03-15 19:50:19,106 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 5 proven. 48 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-15 19:50:19,106 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5368860] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:50:19,106 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:50:19,107 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 42 [2022-03-15 19:50:19,107 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1412520946] [2022-03-15 19:50:19,107 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:50:19,111 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:50:19,132 INFO L252 McrAutomatonBuilder]: Finished intersection with 74 states and 122 transitions. [2022-03-15 19:50:19,132 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:50:20,023 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [50506#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (< ~front~0 0)), 50504#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0)), 50508#(or (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) 16 ~queue~0.offset)) 5) (<= ~size~0 4) (< ~front~0 0)), 50507#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 12))) (<= ~size~0 3) (< ~front~0 0)), 50505#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0))] [2022-03-15 19:50:20,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 19:50:20,024 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:50:20,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 19:50:20,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=2083, Unknown=0, NotChecked=0, Total=2352 [2022-03-15 19:50:20,024 INFO L87 Difference]: Start difference. First operand 725 states and 2032 transitions. Second operand has 21 states, 20 states have (on average 3.35) internal successors, (67), 20 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:50:22,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:50:22,720 INFO L93 Difference]: Finished difference Result 3085 states and 8131 transitions. [2022-03-15 19:50:22,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-03-15 19:50:22,721 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.35) internal successors, (67), 20 states have internal predecessors, (67), 0 states have call successors, (0), 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 30 [2022-03-15 19:50:22,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:50:22,726 INFO L225 Difference]: With dead ends: 3085 [2022-03-15 19:50:22,726 INFO L226 Difference]: Without dead ends: 2934 [2022-03-15 19:50:22,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2413 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1297, Invalid=10475, Unknown=0, NotChecked=0, Total=11772 [2022-03-15 19:50:22,727 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 249 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 984 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 19:50:22,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 0 Invalid, 1187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 984 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 19:50:22,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2022-03-15 19:50:22,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 707. [2022-03-15 19:50:22,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 706 states have (on average 2.7804532577903682) internal successors, (1963), 706 states have internal predecessors, (1963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:50:22,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1963 transitions. [2022-03-15 19:50:22,746 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1963 transitions. Word has length 30 [2022-03-15 19:50:22,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:50:22,746 INFO L470 AbstractCegarLoop]: Abstraction has 707 states and 1963 transitions. [2022-03-15 19:50:22,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.35) internal successors, (67), 20 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:50:22,746 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1963 transitions. [2022-03-15 19:50:22,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-15 19:50:22,747 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:50:22,747 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:50:22,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-03-15 19:50:22,964 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,SelfDestructingSolverStorable38 [2022-03-15 19:50:22,964 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:50:22,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:50:22,965 INFO L85 PathProgramCache]: Analyzing trace with hash -12009068, now seen corresponding path program 37 times [2022-03-15 19:50:22,966 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:50:22,966 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817526781] [2022-03-15 19:50:22,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:50:22,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:50:22,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:50:23,220 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-03-15 19:50:23,221 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:50:23,221 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817526781] [2022-03-15 19:50:23,221 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817526781] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:50:23,221 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194512131] [2022-03-15 19:50:23,221 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 19:50:23,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:50:23,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:50:23,222 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) [2022-03-15 19:50:23,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-03-15 19:50:23,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:50:23,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 40 conjunts are in the unsatisfiable core [2022-03-15 19:50:23,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:50:23,659 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 [2022-03-15 19:50:23,668 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-03-15 19:50:23,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:50:23,812 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 19:50:23,812 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 28 treesize of output 13 [2022-03-15 19:50:23,973 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-03-15 19:50:23,973 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194512131] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:50:23,973 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:50:23,973 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 38 [2022-03-15 19:50:23,973 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1929801566] [2022-03-15 19:50:23,973 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:50:23,977 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:50:23,999 INFO L252 McrAutomatonBuilder]: Finished intersection with 80 states and 135 transitions. [2022-03-15 19:50:23,999 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:50:25,192 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 6 new interpolants: [55343#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0)), 55342#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0)), 55345#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 12))) (<= ~size~0 3) (< ~front~0 0)), 55346#(or (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) 16 ~queue~0.offset)) 5) (<= ~size~0 4) (< ~front~0 0)), 55347#(or (<= ~size~0 5) (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 20)) 5) (< ~front~0 0)), 55344#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (< ~front~0 0))] [2022-03-15 19:50:25,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 19:50:25,193 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:50:25,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 19:50:25,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=1856, Unknown=0, NotChecked=0, Total=2070 [2022-03-15 19:50:25,193 INFO L87 Difference]: Start difference. First operand 707 states and 1963 transitions. Second operand has 22 states, 21 states have (on average 3.5238095238095237) internal successors, (74), 21 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:50:28,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:50:28,028 INFO L93 Difference]: Finished difference Result 2756 states and 7293 transitions. [2022-03-15 19:50:28,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-03-15 19:50:28,028 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.5238095238095237) internal successors, (74), 21 states have internal predecessors, (74), 0 states have call successors, (0), 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 30 [2022-03-15 19:50:28,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:50:28,033 INFO L225 Difference]: With dead ends: 2756 [2022-03-15 19:50:28,033 INFO L226 Difference]: Without dead ends: 2685 [2022-03-15 19:50:28,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2512 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1385, Invalid=10387, Unknown=0, NotChecked=0, Total=11772 [2022-03-15 19:50:28,034 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 345 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 19:50:28,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 0 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 19:50:28,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2685 states. [2022-03-15 19:50:28,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2685 to 694. [2022-03-15 19:50:28,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 693 states have (on average 2.74025974025974) internal successors, (1899), 693 states have internal predecessors, (1899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:50:28,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1899 transitions. [2022-03-15 19:50:28,051 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1899 transitions. Word has length 30 [2022-03-15 19:50:28,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:50:28,051 INFO L470 AbstractCegarLoop]: Abstraction has 694 states and 1899 transitions. [2022-03-15 19:50:28,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.5238095238095237) internal successors, (74), 21 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:50:28,051 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1899 transitions. [2022-03-15 19:50:28,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-15 19:50:28,052 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:50:28,053 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:50:28,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-03-15 19:50:28,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-03-15 19:50:28,268 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:50:28,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:50:28,269 INFO L85 PathProgramCache]: Analyzing trace with hash 515134594, now seen corresponding path program 38 times [2022-03-15 19:50:28,270 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:50:28,270 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059761240] [2022-03-15 19:50:28,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:50:28,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:50:28,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:50:28,631 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-03-15 19:50:28,632 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:50:28,632 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059761240] [2022-03-15 19:50:28,632 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059761240] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:50:28,632 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003032094] [2022-03-15 19:50:28,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 19:50:28,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:50:28,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:50:28,647 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) [2022-03-15 19:50:28,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-03-15 19:50:28,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 19:50:28,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:50:28,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 47 conjunts are in the unsatisfiable core [2022-03-15 19:50:28,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:50:29,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:50:29,026 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 19 treesize of output 21 [2022-03-15 19:50:29,198 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 [2022-03-15 19:50:29,219 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-03-15 19:50:29,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:50:29,337 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1622 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1622) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 20)))) is different from false [2022-03-15 19:50:29,343 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:50:29,343 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 47 treesize of output 47 [2022-03-15 19:50:29,345 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 14 treesize of output 7 [2022-03-15 19:50:29,544 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-03-15 19:50:29,545 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003032094] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:50:29,545 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:50:29,545 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 43 [2022-03-15 19:50:29,545 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1946672687] [2022-03-15 19:50:29,545 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:50:29,548 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:50:29,567 INFO L252 McrAutomatonBuilder]: Finished intersection with 69 states and 113 transitions. [2022-03-15 19:50:29,567 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:50:30,512 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 6 new interpolants: [59841#(or (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) 16 ~queue~0.offset)) 5) (<= ~size~0 4) (< ~front~0 0)), 59842#(or (<= ~size~0 5) (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 20)) 5) (< ~front~0 0)), 59839#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (< ~front~0 0)), 59838#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0)), 59840#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 12))) (<= ~size~0 3) (< ~front~0 0)), 59837#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0))] [2022-03-15 19:50:30,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-15 19:50:30,512 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:50:30,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-15 19:50:30,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=2215, Unknown=1, NotChecked=96, Total=2550 [2022-03-15 19:50:30,512 INFO L87 Difference]: Start difference. First operand 694 states and 1899 transitions. Second operand has 23 states, 22 states have (on average 3.090909090909091) internal successors, (68), 22 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:50:31,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:50:31,701 INFO L93 Difference]: Finished difference Result 1181 states and 3098 transitions. [2022-03-15 19:50:31,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 19:50:31,701 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.090909090909091) internal successors, (68), 22 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-03-15 19:50:31,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:50:31,721 INFO L225 Difference]: With dead ends: 1181 [2022-03-15 19:50:31,721 INFO L226 Difference]: Without dead ends: 1174 [2022-03-15 19:50:31,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=490, Invalid=4069, Unknown=1, NotChecked=132, Total=4692 [2022-03-15 19:50:31,722 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 102 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 19:50:31,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 0 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 19:50:31,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2022-03-15 19:50:31,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 681. [2022-03-15 19:50:31,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 680 states have (on average 2.7308823529411765) internal successors, (1857), 680 states have internal predecessors, (1857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:50:31,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 1857 transitions. [2022-03-15 19:50:31,733 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 1857 transitions. Word has length 30 [2022-03-15 19:50:31,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:50:31,734 INFO L470 AbstractCegarLoop]: Abstraction has 681 states and 1857 transitions. [2022-03-15 19:50:31,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.090909090909091) internal successors, (68), 22 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:50:31,734 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 1857 transitions. [2022-03-15 19:50:31,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-15 19:50:31,735 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:50:31,735 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:50:31,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-03-15 19:50:31,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:50:31,957 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:50:31,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:50:31,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1130527760, now seen corresponding path program 39 times [2022-03-15 19:50:31,958 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:50:31,958 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005742001] [2022-03-15 19:50:31,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:50:31,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:50:31,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:50:32,068 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 34 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-03-15 19:50:32,068 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:50:32,068 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005742001] [2022-03-15 19:50:32,068 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005742001] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:50:32,068 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755877731] [2022-03-15 19:50:32,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 19:50:32,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:50:32,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:50:32,069 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) [2022-03-15 19:50:32,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-03-15 19:50:32,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-15 19:50:32,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:50:32,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 92 conjunts are in the unsatisfiable core [2022-03-15 19:50:32,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:50:32,516 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 [2022-03-15 19:50:32,546 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 [2022-03-15 19:50:32,580 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 [2022-03-15 19:50:33,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:50:33,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:50:33,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:50:33,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:50:33,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:50:33,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:50:33,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:50:33,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:50:33,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:50:33,040 INFO L353 Elim1Store]: treesize reduction 62, result has 4.6 percent of original size [2022-03-15 19:50:33,041 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 56 treesize of output 25 [2022-03-15 19:50:33,058 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 1 proven. 48 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-03-15 19:50:33,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:50:36,518 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:50:36,518 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 232 treesize of output 160 [2022-03-15 19:50:36,588 INFO L353 Elim1Store]: treesize reduction 394, result has 16.0 percent of original size [2022-03-15 19:50:36,588 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 1246 treesize of output 1164 [2022-03-15 19:50:36,624 INFO L353 Elim1Store]: treesize reduction 468, result has 0.2 percent of original size [2022-03-15 19:50:36,625 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 1090 treesize of output 834 [2022-03-15 19:50:36,660 INFO L353 Elim1Store]: treesize reduction 468, result has 0.2 percent of original size [2022-03-15 19:50:36,661 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 834 treesize of output 706 [2022-03-15 19:50:37,150 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 10 proven. 45 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-15 19:50:37,150 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755877731] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:50:37,150 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:50:37,150 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 16, 17] total 41 [2022-03-15 19:50:37,150 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1827577782] [2022-03-15 19:50:37,150 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:50:37,154 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:50:37,180 INFO L252 McrAutomatonBuilder]: Finished intersection with 86 states and 147 transitions. [2022-03-15 19:50:37,180 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:50:37,595 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 19:50:37,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-15 19:50:37,595 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:50:37,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-15 19:50:37,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=369, Invalid=1344, Unknown=9, NotChecked=0, Total=1722 [2022-03-15 19:50:37,596 INFO L87 Difference]: Start difference. First operand 681 states and 1857 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:50:37,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:50:37,657 INFO L93 Difference]: Finished difference Result 1109 states and 2972 transitions. [2022-03-15 19:50:37,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-15 19:50:37,657 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-03-15 19:50:37,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:50:37,660 INFO L225 Difference]: With dead ends: 1109 [2022-03-15 19:50:37,660 INFO L226 Difference]: Without dead ends: 1079 [2022-03-15 19:50:37,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 803 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=369, Invalid=1344, Unknown=9, NotChecked=0, Total=1722 [2022-03-15 19:50:37,661 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 58 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:50:37,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 0 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 19:50:37,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2022-03-15 19:50:37,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 805. [2022-03-15 19:50:37,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 804 states have (on average 2.763681592039801) internal successors, (2222), 804 states have internal predecessors, (2222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:50:37,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 2222 transitions. [2022-03-15 19:50:37,672 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 2222 transitions. Word has length 31 [2022-03-15 19:50:37,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:50:37,672 INFO L470 AbstractCegarLoop]: Abstraction has 805 states and 2222 transitions. [2022-03-15 19:50:37,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:50:37,672 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 2222 transitions. [2022-03-15 19:50:37,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-15 19:50:37,673 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:50:37,673 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:50:37,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-03-15 19:50:37,890 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,SelfDestructingSolverStorable41 [2022-03-15 19:50:37,890 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:50:37,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:50:37,891 INFO L85 PathProgramCache]: Analyzing trace with hash 400080168, now seen corresponding path program 40 times [2022-03-15 19:50:37,892 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:50:37,892 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2624015] [2022-03-15 19:50:37,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:50:37,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:50:37,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:50:38,103 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 32 proven. 36 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-15 19:50:38,103 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:50:38,104 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2624015] [2022-03-15 19:50:38,104 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2624015] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:50:38,104 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547120233] [2022-03-15 19:50:38,104 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 19:50:38,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:50:38,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:50:38,105 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) [2022-03-15 19:50:38,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-03-15 19:50:38,236 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 19:50:38,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:50:38,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-15 19:50:38,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:50:38,619 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 39 proven. 35 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 19:50:38,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:50:38,897 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 37 proven. 27 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-03-15 19:50:38,897 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547120233] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:50:38,897 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:50:38,898 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 20, 16] total 50 [2022-03-15 19:50:38,898 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1408634689] [2022-03-15 19:50:38,898 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:50:38,902 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:50:38,923 INFO L252 McrAutomatonBuilder]: Finished intersection with 67 states and 103 transitions. [2022-03-15 19:50:38,924 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:50:39,219 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [65601#(or (<= ~n~0 (+ ~front~0 1)) (<= ~size~0 1) (< ~front~0 0)), 65600#(or (<= ~size~0 0) (<= ~n~0 ~front~0) (< ~front~0 0))] [2022-03-15 19:50:39,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 19:50:39,220 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:50:39,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 19:50:39,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=649, Invalid=2107, Unknown=0, NotChecked=0, Total=2756 [2022-03-15 19:50:39,220 INFO L87 Difference]: Start difference. First operand 805 states and 2222 transitions. Second operand has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 18 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:50:39,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:50:39,340 INFO L93 Difference]: Finished difference Result 803 states and 2144 transitions. [2022-03-15 19:50:39,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-15 19:50:39,340 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 18 states have internal predecessors, (52), 0 states have call successors, (0), 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 32 [2022-03-15 19:50:39,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:50:39,342 INFO L225 Difference]: With dead ends: 803 [2022-03-15 19:50:39,342 INFO L226 Difference]: Without dead ends: 787 [2022-03-15 19:50:39,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1108 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=678, Invalid=2292, Unknown=0, NotChecked=0, Total=2970 [2022-03-15 19:50:39,345 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 30 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:50:39,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 0 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 19:50:39,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-03-15 19:50:39,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 755. [2022-03-15 19:50:39,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 754 states have (on average 2.7254641909814326) internal successors, (2055), 754 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:50:39,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 2055 transitions. [2022-03-15 19:50:39,355 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 2055 transitions. Word has length 32 [2022-03-15 19:50:39,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:50:39,355 INFO L470 AbstractCegarLoop]: Abstraction has 755 states and 2055 transitions. [2022-03-15 19:50:39,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 18 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:50:39,355 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 2055 transitions. [2022-03-15 19:50:39,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-15 19:50:39,356 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:50:39,356 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:50:39,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-03-15 19:50:39,571 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,SelfDestructingSolverStorable42 [2022-03-15 19:50:39,571 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:50:39,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:50:39,572 INFO L85 PathProgramCache]: Analyzing trace with hash 870917144, now seen corresponding path program 41 times [2022-03-15 19:50:39,572 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:50:39,573 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380903122] [2022-03-15 19:50:39,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:50:39,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:50:39,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:50:40,054 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 10 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:50:40,054 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:50:40,054 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380903122] [2022-03-15 19:50:40,054 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380903122] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:50:40,054 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152916754] [2022-03-15 19:50:40,054 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 19:50:40,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:50:40,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:50:40,056 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) [2022-03-15 19:50:40,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-03-15 19:50:40,230 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-03-15 19:50:40,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:50:40,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 70 conjunts are in the unsatisfiable core [2022-03-15 19:50:40,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:50:40,601 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 [2022-03-15 19:50:40,610 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:50:40,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:50:40,656 INFO L353 Elim1Store]: treesize reduction 14, result has 26.3 percent of original size [2022-03-15 19:50:40,656 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 27 treesize of output 13 [2022-03-15 19:50:41,015 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-03-15 19:50:41,015 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152916754] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:50:41,015 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:50:41,015 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21, 9] total 51 [2022-03-15 19:50:41,015 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [504451245] [2022-03-15 19:50:41,015 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:50:41,019 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:50:41,041 INFO L252 McrAutomatonBuilder]: Finished intersection with 64 states and 95 transitions. [2022-03-15 19:50:41,042 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:50:41,484 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [68164#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0))] [2022-03-15 19:50:41,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-15 19:50:41,485 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:50:41,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-15 19:50:41,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=2619, Unknown=0, NotChecked=0, Total=2862 [2022-03-15 19:50:41,486 INFO L87 Difference]: Start difference. First operand 755 states and 2055 transitions. Second operand has 26 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:50:42,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:50:42,575 INFO L93 Difference]: Finished difference Result 2299 states and 5855 transitions. [2022-03-15 19:50:42,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-15 19:50:42,576 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 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 33 [2022-03-15 19:50:42,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:50:42,579 INFO L225 Difference]: With dead ends: 2299 [2022-03-15 19:50:42,579 INFO L226 Difference]: Without dead ends: 2192 [2022-03-15 19:50:42,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 59 SyntacticMatches, 6 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1692 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=964, Invalid=7226, Unknown=0, NotChecked=0, Total=8190 [2022-03-15 19:50:42,580 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 219 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 19:50:42,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 0 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 19:50:42,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2192 states. [2022-03-15 19:50:42,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2192 to 787. [2022-03-15 19:50:42,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 786 states have (on average 2.7900763358778624) internal successors, (2193), 786 states have internal predecessors, (2193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:50:42,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 2193 transitions. [2022-03-15 19:50:42,595 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 2193 transitions. Word has length 33 [2022-03-15 19:50:42,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:50:42,595 INFO L470 AbstractCegarLoop]: Abstraction has 787 states and 2193 transitions. [2022-03-15 19:50:42,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:50:42,596 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 2193 transitions. [2022-03-15 19:50:42,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-15 19:50:42,597 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:50:42,597 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:50:42,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-03-15 19:50:42,810 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,SelfDestructingSolverStorable43 [2022-03-15 19:50:42,810 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:50:42,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:50:42,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1414902080, now seen corresponding path program 42 times [2022-03-15 19:50:42,815 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:50:42,815 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467947342] [2022-03-15 19:50:42,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:50:42,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:50:42,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:50:43,247 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:50:43,247 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:50:43,247 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467947342] [2022-03-15 19:50:43,247 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467947342] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:50:43,247 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578942610] [2022-03-15 19:50:43,248 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 19:50:43,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:50:43,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:50:43,260 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) [2022-03-15 19:50:43,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-03-15 19:50:43,591 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-15 19:50:43,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:50:43,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 52 conjunts are in the unsatisfiable core [2022-03-15 19:50:43,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:50:44,044 INFO L353 Elim1Store]: treesize reduction 12, result has 20.0 percent of original size [2022-03-15 19:50:44,044 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 22 treesize of output 10 [2022-03-15 19:50:44,050 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-15 19:50:44,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:50:44,116 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 19:50:44,117 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 13 [2022-03-15 19:50:44,572 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 16 proven. 53 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-15 19:50:44,572 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578942610] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:50:44,572 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:50:44,572 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 17, 17] total 55 [2022-03-15 19:50:44,572 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [325586309] [2022-03-15 19:50:44,573 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:50:44,577 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:50:44,603 INFO L252 McrAutomatonBuilder]: Finished intersection with 68 states and 104 transitions. [2022-03-15 19:50:44,604 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:50:45,346 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [72361#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0)), 72362#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0))] [2022-03-15 19:50:45,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-15 19:50:45,346 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:50:45,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-15 19:50:45,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=3040, Unknown=0, NotChecked=0, Total=3422 [2022-03-15 19:50:45,347 INFO L87 Difference]: Start difference. First operand 787 states and 2193 transitions. Second operand has 27 states, 26 states have (on average 2.423076923076923) internal successors, (63), 26 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:50:47,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:50:47,715 INFO L93 Difference]: Finished difference Result 4742 states and 12092 transitions. [2022-03-15 19:50:47,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-03-15 19:50:47,715 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.423076923076923) internal successors, (63), 26 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-03-15 19:50:47,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:50:47,722 INFO L225 Difference]: With dead ends: 4742 [2022-03-15 19:50:47,723 INFO L226 Difference]: Without dead ends: 4517 [2022-03-15 19:50:47,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 50 SyntacticMatches, 14 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2865 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1118, Invalid=13644, Unknown=0, NotChecked=0, Total=14762 [2022-03-15 19:50:47,724 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 421 mSDsluCounter, 924 mSDsCounter, 0 mSdLazyCounter, 1726 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 1726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 19:50:47,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [421 Valid, 0 Invalid, 1915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 1726 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 19:50:47,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4517 states. [2022-03-15 19:50:47,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4517 to 857. [2022-03-15 19:50:47,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 856 states have (on average 2.8411214953271027) internal successors, (2432), 856 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:50:47,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 2432 transitions. [2022-03-15 19:50:47,753 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 2432 transitions. Word has length 33 [2022-03-15 19:50:47,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:50:47,753 INFO L470 AbstractCegarLoop]: Abstraction has 857 states and 2432 transitions. [2022-03-15 19:50:47,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.423076923076923) internal successors, (63), 26 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:50:47,753 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 2432 transitions. [2022-03-15 19:50:47,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-15 19:50:47,755 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:50:47,755 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:50:47,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-03-15 19:50:47,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:50:47,972 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:50:47,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:50:47,972 INFO L85 PathProgramCache]: Analyzing trace with hash 739146008, now seen corresponding path program 43 times [2022-03-15 19:50:47,973 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:50:47,973 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569594529] [2022-03-15 19:50:47,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:50:47,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:50:48,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:50:48,413 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:50:48,413 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:50:48,413 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569594529] [2022-03-15 19:50:48,413 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569594529] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:50:48,413 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672831936] [2022-03-15 19:50:48,413 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 19:50:48,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:50:48,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:50:48,414 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) [2022-03-15 19:50:48,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-03-15 19:50:48,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:50:48,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 66 conjunts are in the unsatisfiable core [2022-03-15 19:50:48,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:50:49,017 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 [2022-03-15 19:50:49,024 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:50:49,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:50:49,100 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 19:50:49,100 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 28 treesize of output 13 [2022-03-15 19:50:49,443 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-03-15 19:50:49,443 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672831936] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:50:49,443 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:50:49,443 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 11] total 47 [2022-03-15 19:50:49,443 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [404414406] [2022-03-15 19:50:49,443 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:50:49,447 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:50:49,496 INFO L252 McrAutomatonBuilder]: Finished intersection with 72 states and 113 transitions. [2022-03-15 19:50:49,496 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:50:50,131 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [79186#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0)), 79187#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0)), 79188#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (< ~front~0 0))] [2022-03-15 19:50:50,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-15 19:50:50,132 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:50:50,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-15 19:50:50,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=2436, Unknown=0, NotChecked=0, Total=2652 [2022-03-15 19:50:50,133 INFO L87 Difference]: Start difference. First operand 857 states and 2432 transitions. Second operand has 28 states, 27 states have (on average 2.5185185185185186) internal successors, (68), 27 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:50:52,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:50:52,998 INFO L93 Difference]: Finished difference Result 8057 states and 20779 transitions. [2022-03-15 19:50:52,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2022-03-15 19:50:52,998 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.5185185185185186) internal successors, (68), 27 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-03-15 19:50:52,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:50:53,013 INFO L225 Difference]: With dead ends: 8057 [2022-03-15 19:50:53,014 INFO L226 Difference]: Without dead ends: 7636 [2022-03-15 19:50:53,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 50 SyntacticMatches, 25 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5828 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1928, Invalid=21328, Unknown=0, NotChecked=0, Total=23256 [2022-03-15 19:50:53,016 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 745 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 1916 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 1916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 19:50:53,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [745 Valid, 0 Invalid, 2199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 1916 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 19:50:53,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7636 states. [2022-03-15 19:50:53,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7636 to 1183. [2022-03-15 19:50:53,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1182 states have (on average 2.9771573604060912) internal successors, (3519), 1182 states have internal predecessors, (3519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:50:53,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 3519 transitions. [2022-03-15 19:50:53,066 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 3519 transitions. Word has length 33 [2022-03-15 19:50:53,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:50:53,066 INFO L470 AbstractCegarLoop]: Abstraction has 1183 states and 3519 transitions. [2022-03-15 19:50:53,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.5185185185185186) internal successors, (68), 27 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:50:53,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 3519 transitions. [2022-03-15 19:50:53,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-15 19:50:53,068 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:50:53,068 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:50:53,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2022-03-15 19:50:53,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:50:53,283 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:50:53,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:50:53,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1204840000, now seen corresponding path program 44 times [2022-03-15 19:50:53,285 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:50:53,285 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835404164] [2022-03-15 19:50:53,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:50:53,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:50:53,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:50:53,716 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:50:53,716 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:50:53,717 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835404164] [2022-03-15 19:50:53,717 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835404164] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:50:53,717 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208817614] [2022-03-15 19:50:53,717 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 19:50:53,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:50:53,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:50:53,718 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) [2022-03-15 19:50:53,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-03-15 19:50:53,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 19:50:53,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:50:53,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 50 conjunts are in the unsatisfiable core [2022-03-15 19:50:53,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:50:54,325 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 [2022-03-15 19:50:54,333 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-03-15 19:50:54,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:50:54,473 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 19:50:54,473 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 28 treesize of output 13 [2022-03-15 19:50:54,797 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-03-15 19:50:54,797 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208817614] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:50:54,797 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:50:54,797 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 16, 12] total 48 [2022-03-15 19:50:54,797 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1951114883] [2022-03-15 19:50:54,797 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:50:54,801 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:50:54,830 INFO L252 McrAutomatonBuilder]: Finished intersection with 76 states and 122 transitions. [2022-03-15 19:50:54,830 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:50:55,576 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [90058#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (< ~front~0 0)), 90056#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0)), 90059#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 12))) (<= ~size~0 3) (< ~front~0 0)), 90057#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0))] [2022-03-15 19:50:55,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-03-15 19:50:55,576 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:50:55,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-03-15 19:50:55,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=2620, Unknown=0, NotChecked=0, Total=2862 [2022-03-15 19:50:55,577 INFO L87 Difference]: Start difference. First operand 1183 states and 3519 transitions. Second operand has 29 states, 28 states have (on average 2.607142857142857) internal successors, (73), 28 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:51:00,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:51:00,849 INFO L93 Difference]: Finished difference Result 14202 states and 37443 transitions. [2022-03-15 19:51:00,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2022-03-15 19:51:00,849 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.607142857142857) internal successors, (73), 28 states have internal predecessors, (73), 0 states have call successors, (0), 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 33 [2022-03-15 19:51:00,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:51:00,874 INFO L225 Difference]: With dead ends: 14202 [2022-03-15 19:51:00,875 INFO L226 Difference]: Without dead ends: 13421 [2022-03-15 19:51:00,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 61 SyntacticMatches, 16 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12943 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=3759, Invalid=40551, Unknown=0, NotChecked=0, Total=44310 [2022-03-15 19:51:00,876 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1091 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 1466 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1091 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 1466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 19:51:00,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1091 Valid, 0 Invalid, 1775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 1466 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 19:51:00,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13421 states. [2022-03-15 19:51:00,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13421 to 1729. [2022-03-15 19:51:00,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1729 states, 1728 states have (on average 3.0815972222222223) internal successors, (5325), 1728 states have internal predecessors, (5325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:51:00,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1729 states to 1729 states and 5325 transitions. [2022-03-15 19:51:00,965 INFO L78 Accepts]: Start accepts. Automaton has 1729 states and 5325 transitions. Word has length 33 [2022-03-15 19:51:00,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:51:00,965 INFO L470 AbstractCegarLoop]: Abstraction has 1729 states and 5325 transitions. [2022-03-15 19:51:00,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.607142857142857) internal successors, (73), 28 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:51:00,965 INFO L276 IsEmpty]: Start isEmpty. Operand 1729 states and 5325 transitions. [2022-03-15 19:51:00,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-15 19:51:00,967 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:51:00,967 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:51:00,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-03-15 19:51:01,183 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,SelfDestructingSolverStorable46 [2022-03-15 19:51:01,183 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:51:01,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:51:01,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1338864104, now seen corresponding path program 45 times [2022-03-15 19:51:01,188 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:51:01,189 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302922016] [2022-03-15 19:51:01,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:51:01,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:51:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:51:01,620 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:51:01,621 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:51:01,621 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302922016] [2022-03-15 19:51:01,621 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302922016] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:51:01,621 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287409333] [2022-03-15 19:51:01,621 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 19:51:01,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:51:01,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:51:01,622 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) [2022-03-15 19:51:01,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-03-15 19:51:01,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-03-15 19:51:01,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:51:01,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 38 conjunts are in the unsatisfiable core [2022-03-15 19:51:01,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:51:02,324 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 23 treesize of output 7 [2022-03-15 19:51:02,333 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-03-15 19:51:02,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:51:02,362 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 19:51:02,362 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 13 [2022-03-15 19:51:02,522 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-03-15 19:51:02,522 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287409333] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:51:02,522 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:51:02,522 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 13, 13] total 35 [2022-03-15 19:51:02,522 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1237486299] [2022-03-15 19:51:02,523 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:51:02,527 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:51:02,554 INFO L252 McrAutomatonBuilder]: Finished intersection with 80 states and 131 transitions. [2022-03-15 19:51:02,554 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:51:03,533 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [108264#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0)), 108267#(or (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) 16 ~queue~0.offset)) 5) (<= ~size~0 4) (< ~front~0 0)), 108266#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 12))) (<= ~size~0 3) (< ~front~0 0)), 108263#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0)), 108265#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (< ~front~0 0))] [2022-03-15 19:51:03,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-15 19:51:03,533 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:51:03,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-15 19:51:03,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1529, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 19:51:03,534 INFO L87 Difference]: Start difference. First operand 1729 states and 5325 transitions. Second operand has 30 states, 29 states have (on average 2.689655172413793) internal successors, (78), 29 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:51:08,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:51:08,448 INFO L93 Difference]: Finished difference Result 10970 states and 30429 transitions. [2022-03-15 19:51:08,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2022-03-15 19:51:08,449 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.689655172413793) internal successors, (78), 29 states have internal predecessors, (78), 0 states have call successors, (0), 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 33 [2022-03-15 19:51:08,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:51:08,467 INFO L225 Difference]: With dead ends: 10970 [2022-03-15 19:51:08,467 INFO L226 Difference]: Without dead ends: 10446 [2022-03-15 19:51:08,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 73 SyntacticMatches, 20 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11735 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=4297, Invalid=31993, Unknown=0, NotChecked=0, Total=36290 [2022-03-15 19:51:08,472 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 579 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 1328 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 1328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 19:51:08,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [579 Valid, 0 Invalid, 1663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 1328 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 19:51:08,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10446 states. [2022-03-15 19:51:08,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10446 to 1781. [2022-03-15 19:51:08,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1781 states, 1780 states have (on average 3.0735955056179773) internal successors, (5471), 1780 states have internal predecessors, (5471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:51:08,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1781 states to 1781 states and 5471 transitions. [2022-03-15 19:51:08,581 INFO L78 Accepts]: Start accepts. Automaton has 1781 states and 5471 transitions. Word has length 33 [2022-03-15 19:51:08,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:51:08,581 INFO L470 AbstractCegarLoop]: Abstraction has 1781 states and 5471 transitions. [2022-03-15 19:51:08,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.689655172413793) internal successors, (78), 29 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:51:08,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states and 5471 transitions. [2022-03-15 19:51:08,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-15 19:51:08,584 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:51:08,584 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:51:08,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2022-03-15 19:51:08,799 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,SelfDestructingSolverStorable47 [2022-03-15 19:51:08,799 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:51:08,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:51:08,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1198644032, now seen corresponding path program 46 times [2022-03-15 19:51:08,801 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:51:08,801 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100478132] [2022-03-15 19:51:08,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:51:08,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:51:08,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:51:09,221 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:51:09,222 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:51:09,222 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100478132] [2022-03-15 19:51:09,222 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100478132] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:51:09,222 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400175758] [2022-03-15 19:51:09,222 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 19:51:09,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:51:09,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:51:09,223 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) [2022-03-15 19:51:09,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-03-15 19:51:09,370 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 19:51:09,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:51:09,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 46 conjunts are in the unsatisfiable core [2022-03-15 19:51:09,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:51:09,807 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 [2022-03-15 19:51:09,816 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-03-15 19:51:09,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:51:10,020 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 19:51:10,021 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 28 treesize of output 13 [2022-03-15 19:51:10,267 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-03-15 19:51:10,267 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400175758] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:51:10,282 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:51:10,282 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 16, 14] total 50 [2022-03-15 19:51:10,283 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [272852759] [2022-03-15 19:51:10,283 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:51:10,287 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:51:10,315 INFO L252 McrAutomatonBuilder]: Finished intersection with 84 states and 140 transitions. [2022-03-15 19:51:10,315 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:51:11,628 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 6 new interpolants: [123345#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 12))) (<= ~size~0 3) (< ~front~0 0)), 123342#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0)), 123347#(or (<= ~size~0 5) (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 20)) 5) (< ~front~0 0)), 123344#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (< ~front~0 0)), 123343#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0)), 123346#(or (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) 16 ~queue~0.offset)) 5) (<= ~size~0 4) (< ~front~0 0))] [2022-03-15 19:51:11,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-15 19:51:11,628 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:51:11,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-15 19:51:11,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=3003, Unknown=0, NotChecked=0, Total=3306 [2022-03-15 19:51:11,629 INFO L87 Difference]: Start difference. First operand 1781 states and 5471 transitions. Second operand has 31 states, 30 states have (on average 2.7666666666666666) internal successors, (83), 30 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:51:16,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:51:16,205 INFO L93 Difference]: Finished difference Result 7108 states and 19174 transitions. [2022-03-15 19:51:16,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-03-15 19:51:16,205 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.7666666666666666) internal successors, (83), 30 states have internal predecessors, (83), 0 states have call successors, (0), 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 33 [2022-03-15 19:51:16,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:51:16,216 INFO L225 Difference]: With dead ends: 7108 [2022-03-15 19:51:16,216 INFO L226 Difference]: Without dead ends: 6905 [2022-03-15 19:51:16,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 69 SyntacticMatches, 12 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8116 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=3938, Invalid=26862, Unknown=0, NotChecked=0, Total=30800 [2022-03-15 19:51:16,218 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 690 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 19:51:16,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [690 Valid, 0 Invalid, 1359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 1029 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 19:51:16,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6905 states. [2022-03-15 19:51:16,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6905 to 1783. [2022-03-15 19:51:16,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1783 states, 1782 states have (on average 3.0729517396184063) internal successors, (5476), 1782 states have internal predecessors, (5476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:51:16,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1783 states to 1783 states and 5476 transitions. [2022-03-15 19:51:16,264 INFO L78 Accepts]: Start accepts. Automaton has 1783 states and 5476 transitions. Word has length 33 [2022-03-15 19:51:16,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:51:16,264 INFO L470 AbstractCegarLoop]: Abstraction has 1783 states and 5476 transitions. [2022-03-15 19:51:16,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.7666666666666666) internal successors, (83), 30 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:51:16,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1783 states and 5476 transitions. [2022-03-15 19:51:16,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-15 19:51:16,266 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:51:16,266 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:51:16,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-03-15 19:51:16,482 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,SelfDestructingSolverStorable48 [2022-03-15 19:51:16,482 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:51:16,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:51:16,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1146789096, now seen corresponding path program 47 times [2022-03-15 19:51:16,483 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:51:16,483 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858022329] [2022-03-15 19:51:16,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:51:16,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:51:16,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:51:16,996 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:51:16,996 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:51:16,996 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858022329] [2022-03-15 19:51:16,996 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858022329] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:51:16,996 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267981069] [2022-03-15 19:51:16,996 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 19:51:16,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:51:16,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:51:16,998 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) [2022-03-15 19:51:17,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-03-15 19:51:17,197 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-03-15 19:51:17,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:51:17,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 70 conjunts are in the unsatisfiable core [2022-03-15 19:51:17,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:51:17,451 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 13 treesize of output 9 [2022-03-15 19:51:17,486 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 [2022-03-15 19:51:17,523 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 [2022-03-15 19:51:18,032 INFO L353 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2022-03-15 19:51:18,032 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 21 treesize of output 10 [2022-03-15 19:51:18,040 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:51:18,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:51:19,019 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:51:19,019 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 64 treesize of output 52 [2022-03-15 19:51:19,026 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 19:51:19,026 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 156 treesize of output 141 [2022-03-15 19:51:19,031 INFO L353 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-03-15 19:51:19,031 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 136 treesize of output 104 [2022-03-15 19:51:19,037 INFO L353 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-03-15 19:51:19,038 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 83 treesize of output 67 [2022-03-15 19:51:19,128 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 56 refuted. 7 times theorem prover too weak. 21 trivial. 0 not checked. [2022-03-15 19:51:19,129 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267981069] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:51:19,129 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:51:19,129 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24, 18] total 63 [2022-03-15 19:51:19,138 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [597178272] [2022-03-15 19:51:19,138 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:51:19,142 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:51:19,213 INFO L252 McrAutomatonBuilder]: Finished intersection with 90 states and 153 transitions. [2022-03-15 19:51:19,213 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:51:20,708 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 7 new interpolants: [134516#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0)), 134519#(or (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) 16 ~queue~0.offset)) 5) (<= ~size~0 4) (< ~front~0 0)), 134517#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (< ~front~0 0)), 134518#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 12))) (<= ~size~0 3) (< ~front~0 0)), 134521#(or (<= ~size~0 6) (< ~front~0 0) (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 24)) 5)), 134515#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0)), 134520#(or (<= ~size~0 5) (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 20)) 5) (< ~front~0 0))] [2022-03-15 19:51:20,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 19:51:20,709 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:51:20,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 19:51:20,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1056, Invalid=4017, Unknown=39, NotChecked=0, Total=5112 [2022-03-15 19:51:20,709 INFO L87 Difference]: Start difference. First operand 1783 states and 5476 transitions. Second operand has 32 states, 31 states have (on average 2.903225806451613) internal successors, (90), 31 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:51:27,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:51:27,951 INFO L93 Difference]: Finished difference Result 8652 states and 24044 transitions. [2022-03-15 19:51:27,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2022-03-15 19:51:27,951 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.903225806451613) internal successors, (90), 31 states have internal predecessors, (90), 0 states have call successors, (0), 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 33 [2022-03-15 19:51:27,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:51:27,966 INFO L225 Difference]: With dead ends: 8652 [2022-03-15 19:51:27,966 INFO L226 Difference]: Without dead ends: 8437 [2022-03-15 19:51:27,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 63 SyntacticMatches, 10 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12862 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=6777, Invalid=38334, Unknown=45, NotChecked=0, Total=45156 [2022-03-15 19:51:27,969 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 858 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 19:51:27,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [858 Valid, 0 Invalid, 1693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 19:51:27,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8437 states. [2022-03-15 19:51:28,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8437 to 1781. [2022-03-15 19:51:28,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1781 states, 1780 states have (on average 3.0275280898876407) internal successors, (5389), 1780 states have internal predecessors, (5389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:51:28,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1781 states to 1781 states and 5389 transitions. [2022-03-15 19:51:28,029 INFO L78 Accepts]: Start accepts. Automaton has 1781 states and 5389 transitions. Word has length 33 [2022-03-15 19:51:28,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:51:28,029 INFO L470 AbstractCegarLoop]: Abstraction has 1781 states and 5389 transitions. [2022-03-15 19:51:28,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.903225806451613) internal successors, (90), 31 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:51:28,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states and 5389 transitions. [2022-03-15 19:51:28,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-15 19:51:28,031 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:51:28,031 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:51:28,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-03-15 19:51:28,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:51:28,249 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:51:28,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:51:28,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1596740316, now seen corresponding path program 48 times [2022-03-15 19:51:28,250 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:51:28,250 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669272193] [2022-03-15 19:51:28,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:51:28,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:51:28,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:51:28,801 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:51:28,801 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:51:28,801 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669272193] [2022-03-15 19:51:28,801 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669272193] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:51:28,801 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688801433] [2022-03-15 19:51:28,801 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 19:51:28,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:51:28,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:51:28,802 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) [2022-03-15 19:51:28,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-03-15 19:51:29,100 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-03-15 19:51:29,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:51:29,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 68 conjunts are in the unsatisfiable core [2022-03-15 19:51:29,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:51:29,442 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 13 treesize of output 9 [2022-03-15 19:51:29,490 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 [2022-03-15 19:51:29,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:51:29,636 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 21 treesize of output 23 [2022-03-15 19:51:30,017 INFO L353 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2022-03-15 19:51:30,018 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 21 treesize of output 10 [2022-03-15 19:51:30,027 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-03-15 19:51:30,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:51:30,326 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_2166 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2166) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 24)))) (<= c_~size~0 6)) is different from false [2022-03-15 19:51:30,578 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:51:30,579 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 49 [2022-03-15 19:51:30,586 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:51:30,586 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 110 treesize of output 110 [2022-03-15 19:51:30,590 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 63 treesize of output 49 [2022-03-15 19:51:30,598 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:51:30,599 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 55 treesize of output 59 [2022-03-15 19:51:31,243 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-03-15 19:51:31,244 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688801433] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:51:31,244 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:51:31,244 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 18, 18] total 58 [2022-03-15 19:51:31,244 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1544853543] [2022-03-15 19:51:31,244 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:51:31,248 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:51:31,303 INFO L252 McrAutomatonBuilder]: Finished intersection with 77 states and 127 transitions. [2022-03-15 19:51:31,304 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:51:32,699 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 7 new interpolants: [147275#(or (<= ~size~0 5) (<= ~n~0 (+ 5 ~front~0)) (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 20)) 5) (< ~front~0 0)), 147273#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 12))) (<= ~size~0 3) (<= ~n~0 (+ 3 ~front~0)) (< ~front~0 0)), 147274#(or (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) 16 ~queue~0.offset)) 5) (<= ~n~0 (+ ~front~0 4)) (<= ~size~0 4) (< ~front~0 0)), 147272#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (<= ~n~0 (+ 2 ~front~0)) (< ~front~0 0)), 147271#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~n~0 (+ ~front~0 1)) (<= ~size~0 1) (< ~front~0 0)), 147276#(or (<= ~size~0 6) (<= ~n~0 (+ ~front~0 6)) (< ~front~0 0) (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 24)) 5)), 147270#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (<= ~n~0 ~front~0) (< ~front~0 0))] [2022-03-15 19:51:32,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 19:51:32,699 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:51:32,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 19:51:32,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=462, Invalid=3831, Unknown=1, NotChecked=128, Total=4422 [2022-03-15 19:51:32,700 INFO L87 Difference]: Start difference. First operand 1781 states and 5389 transitions. Second operand has 33 states, 32 states have (on average 2.59375) internal successors, (83), 32 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:51:35,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:51:35,964 INFO L93 Difference]: Finished difference Result 4227 states and 11760 transitions. [2022-03-15 19:51:35,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-03-15 19:51:35,965 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.59375) internal successors, (83), 32 states have internal predecessors, (83), 0 states have call successors, (0), 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 33 [2022-03-15 19:51:35,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:51:35,991 INFO L225 Difference]: With dead ends: 4227 [2022-03-15 19:51:35,992 INFO L226 Difference]: Without dead ends: 4220 [2022-03-15 19:51:35,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2370 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1949, Invalid=11626, Unknown=1, NotChecked=230, Total=13806 [2022-03-15 19:51:35,993 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 344 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 1496 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 1496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 19:51:35,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 0 Invalid, 1740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 1496 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 19:51:35,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4220 states. [2022-03-15 19:51:36,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4220 to 1779. [2022-03-15 19:51:36,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1779 states, 1778 states have (on average 3.0286839145106863) internal successors, (5385), 1778 states have internal predecessors, (5385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:51:36,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 5385 transitions. [2022-03-15 19:51:36,025 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 5385 transitions. Word has length 33 [2022-03-15 19:51:36,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:51:36,025 INFO L470 AbstractCegarLoop]: Abstraction has 1779 states and 5385 transitions. [2022-03-15 19:51:36,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.59375) internal successors, (83), 32 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:51:36,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 5385 transitions. [2022-03-15 19:51:36,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 19:51:36,027 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:51:36,027 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:51:36,046 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-03-15 19:51:36,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:51:36,244 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:51:36,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:51:36,245 INFO L85 PathProgramCache]: Analyzing trace with hash 312085260, now seen corresponding path program 49 times [2022-03-15 19:51:36,246 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:51:36,246 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623208315] [2022-03-15 19:51:36,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:51:36,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:51:36,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:51:36,320 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 43 proven. 21 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-03-15 19:51:36,320 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:51:36,320 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623208315] [2022-03-15 19:51:36,320 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623208315] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:51:36,321 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852649109] [2022-03-15 19:51:36,321 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 19:51:36,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:51:36,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:51:36,336 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) [2022-03-15 19:51:36,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-03-15 19:51:36,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:51:36,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-15 19:51:36,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:51:36,516 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 43 proven. 21 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-03-15 19:51:36,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:51:36,547 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 43 proven. 21 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-03-15 19:51:36,548 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852649109] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:51:36,548 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:51:36,548 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 10 [2022-03-15 19:51:36,548 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [561890255] [2022-03-15 19:51:36,548 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:51:36,552 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:51:36,588 INFO L252 McrAutomatonBuilder]: Finished intersection with 96 states and 165 transitions. [2022-03-15 19:51:36,588 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:51:37,202 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 19:51:37,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 19:51:37,202 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:51:37,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 19:51:37,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2022-03-15 19:51:37,203 INFO L87 Difference]: Start difference. First operand 1779 states and 5385 transitions. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 10 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:51:37,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:51:37,319 INFO L93 Difference]: Finished difference Result 2547 states and 7374 transitions. [2022-03-15 19:51:37,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-15 19:51:37,320 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 10 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-03-15 19:51:37,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:51:37,324 INFO L225 Difference]: With dead ends: 2547 [2022-03-15 19:51:37,324 INFO L226 Difference]: Without dead ends: 2513 [2022-03-15 19:51:37,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2022-03-15 19:51:37,325 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 50 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:51:37,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 0 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 19:51:37,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2513 states. [2022-03-15 19:51:37,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2513 to 2009. [2022-03-15 19:51:37,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 2008 states have (on average 3.0094621513944224) internal successors, (6043), 2008 states have internal predecessors, (6043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:51:37,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 6043 transitions. [2022-03-15 19:51:37,377 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 6043 transitions. Word has length 34 [2022-03-15 19:51:37,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:51:37,377 INFO L470 AbstractCegarLoop]: Abstraction has 2009 states and 6043 transitions. [2022-03-15 19:51:37,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 10 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:51:37,377 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 6043 transitions. [2022-03-15 19:51:37,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-03-15 19:51:37,379 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:51:37,379 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:51:37,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-03-15 19:51:37,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:51:37,599 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:51:37,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:51:37,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1210981628, now seen corresponding path program 50 times [2022-03-15 19:51:37,601 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:51:37,601 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573874358] [2022-03-15 19:51:37,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:51:37,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:51:37,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:51:37,786 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 37 proven. 41 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-03-15 19:51:37,786 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:51:37,786 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573874358] [2022-03-15 19:51:37,786 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573874358] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:51:37,786 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265776441] [2022-03-15 19:51:37,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 19:51:37,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:51:37,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:51:37,787 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) [2022-03-15 19:51:37,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-03-15 19:51:37,945 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 19:51:37,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:51:37,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 19:51:37,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:51:38,329 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 50 proven. 28 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-03-15 19:51:38,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:51:38,752 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 43 proven. 35 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-03-15 19:51:38,752 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265776441] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:51:38,753 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:51:38,753 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 49 [2022-03-15 19:51:38,753 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1950959763] [2022-03-15 19:51:38,753 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:51:38,758 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:51:38,786 INFO L252 McrAutomatonBuilder]: Finished intersection with 69 states and 103 transitions. [2022-03-15 19:51:38,787 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:51:39,042 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [162192#(or (<= ~size~0 0) (<= ~n~0 ~front~0) (< ~front~0 0))] [2022-03-15 19:51:39,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 19:51:39,042 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:51:39,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 19:51:39,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=626, Invalid=1924, Unknown=0, NotChecked=0, Total=2550 [2022-03-15 19:51:39,043 INFO L87 Difference]: Start difference. First operand 2009 states and 6043 transitions. Second operand has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:51:39,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:51:39,467 INFO L93 Difference]: Finished difference Result 3089 states and 8224 transitions. [2022-03-15 19:51:39,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-15 19:51:39,468 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 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 35 [2022-03-15 19:51:39,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:51:39,470 INFO L225 Difference]: With dead ends: 3089 [2022-03-15 19:51:39,470 INFO L226 Difference]: Without dead ends: 1691 [2022-03-15 19:51:39,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1121 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=891, Invalid=3141, Unknown=0, NotChecked=0, Total=4032 [2022-03-15 19:51:39,471 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 80 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 19:51:39,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 0 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 19:51:39,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1691 states. [2022-03-15 19:51:39,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1691 to 1691. [2022-03-15 19:51:39,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1691 states, 1690 states have (on average 3.0431952662721895) internal successors, (5143), 1690 states have internal predecessors, (5143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:51:39,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1691 states to 1691 states and 5143 transitions. [2022-03-15 19:51:39,491 INFO L78 Accepts]: Start accepts. Automaton has 1691 states and 5143 transitions. Word has length 35 [2022-03-15 19:51:39,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:51:39,491 INFO L470 AbstractCegarLoop]: Abstraction has 1691 states and 5143 transitions. [2022-03-15 19:51:39,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:51:39,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1691 states and 5143 transitions. [2022-03-15 19:51:39,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 19:51:39,493 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:51:39,493 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:51:39,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-03-15 19:51:39,710 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,SelfDestructingSolverStorable52 [2022-03-15 19:51:39,710 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:51:39,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:51:39,711 INFO L85 PathProgramCache]: Analyzing trace with hash -2003842452, now seen corresponding path program 51 times [2022-03-15 19:51:39,712 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:51:39,712 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245673177] [2022-03-15 19:51:39,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:51:39,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:51:39,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:51:40,122 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 15 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:51:40,122 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:51:40,122 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245673177] [2022-03-15 19:51:40,123 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245673177] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:51:40,123 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082887513] [2022-03-15 19:51:40,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 19:51:40,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:51:40,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:51:40,124 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) [2022-03-15 19:51:40,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-03-15 19:51:40,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-03-15 19:51:40,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:51:40,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 84 conjunts are in the unsatisfiable core [2022-03-15 19:51:40,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:51:41,084 INFO L353 Elim1Store]: treesize reduction 213, result has 1.4 percent of original size [2022-03-15 19:51:41,085 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 62 treesize of output 22 [2022-03-15 19:51:41,091 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 11 proven. 87 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-15 19:51:41,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:51:43,756 INFO L353 Elim1Store]: treesize reduction 286, result has 16.1 percent of original size [2022-03-15 19:51:43,756 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 92 treesize of output 78 [2022-03-15 19:51:44,464 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 3 proven. 95 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-15 19:51:44,465 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082887513] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:51:44,465 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:51:44,465 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 22, 22] total 68 [2022-03-15 19:51:44,465 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1939865966] [2022-03-15 19:51:44,465 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:51:44,470 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:51:44,500 INFO L252 McrAutomatonBuilder]: Finished intersection with 70 states and 104 transitions. [2022-03-15 19:51:44,500 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:51:44,819 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [168970#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0))] [2022-03-15 19:51:44,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-03-15 19:51:44,820 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:51:44,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-03-15 19:51:44,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=430, Invalid=4540, Unknown=0, NotChecked=0, Total=4970 [2022-03-15 19:51:44,821 INFO L87 Difference]: Start difference. First operand 1691 states and 5143 transitions. Second operand has 29 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 28 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:51:46,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:51:46,167 INFO L93 Difference]: Finished difference Result 3443 states and 9324 transitions. [2022-03-15 19:51:46,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-15 19:51:46,168 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 28 states have internal predecessors, (64), 0 states have call successors, (0), 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 36 [2022-03-15 19:51:46,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:51:46,172 INFO L225 Difference]: With dead ends: 3443 [2022-03-15 19:51:46,173 INFO L226 Difference]: Without dead ends: 3322 [2022-03-15 19:51:46,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2820 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1367, Invalid=11515, Unknown=0, NotChecked=0, Total=12882 [2022-03-15 19:51:46,174 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 311 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 876 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 19:51:46,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 0 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 876 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 19:51:46,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3322 states. [2022-03-15 19:51:46,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3322 to 1719. [2022-03-15 19:51:46,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1719 states, 1718 states have (on average 3.0646100116414434) internal successors, (5265), 1718 states have internal predecessors, (5265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:51:46,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 5265 transitions. [2022-03-15 19:51:46,201 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 5265 transitions. Word has length 36 [2022-03-15 19:51:46,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:51:46,201 INFO L470 AbstractCegarLoop]: Abstraction has 1719 states and 5265 transitions. [2022-03-15 19:51:46,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 28 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:51:46,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 5265 transitions. [2022-03-15 19:51:46,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 19:51:46,203 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:51:46,203 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:51:46,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-03-15 19:51:46,419 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,SelfDestructingSolverStorable53 [2022-03-15 19:51:46,420 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:51:46,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:51:46,420 INFO L85 PathProgramCache]: Analyzing trace with hash 5305620, now seen corresponding path program 52 times [2022-03-15 19:51:46,421 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:51:46,421 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643496345] [2022-03-15 19:51:46,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:51:46,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:51:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:51:46,914 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:51:46,914 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:51:46,914 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643496345] [2022-03-15 19:51:46,914 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643496345] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:51:46,914 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069482686] [2022-03-15 19:51:46,914 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 19:51:46,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:51:46,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:51:46,915 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) [2022-03-15 19:51:46,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-03-15 19:51:47,107 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 19:51:47,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:51:47,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 60 conjunts are in the unsatisfiable core [2022-03-15 19:51:47,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:51:47,519 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 [2022-03-15 19:51:47,524 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-03-15 19:51:47,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:51:47,578 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 19:51:47,579 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 13 [2022-03-15 19:51:47,885 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 71 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-03-15 19:51:47,886 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069482686] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:51:47,886 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:51:47,886 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 18, 11] total 52 [2022-03-15 19:51:47,886 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2050262180] [2022-03-15 19:51:47,886 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:51:47,891 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:51:47,921 INFO L252 McrAutomatonBuilder]: Finished intersection with 74 states and 113 transitions. [2022-03-15 19:51:47,922 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:51:48,454 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [176203#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0)), 176202#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0))] [2022-03-15 19:51:48,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-15 19:51:48,454 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:51:48,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-15 19:51:48,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=2864, Unknown=0, NotChecked=0, Total=3080 [2022-03-15 19:51:48,454 INFO L87 Difference]: Start difference. First operand 1719 states and 5265 transitions. Second operand has 30 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 29 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:51:50,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:51:50,775 INFO L93 Difference]: Finished difference Result 6177 states and 16125 transitions. [2022-03-15 19:51:50,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-03-15 19:51:50,776 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 29 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-03-15 19:51:50,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:51:50,786 INFO L225 Difference]: With dead ends: 6177 [2022-03-15 19:51:50,786 INFO L226 Difference]: Without dead ends: 5932 [2022-03-15 19:51:50,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 55 SyntacticMatches, 24 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3602 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1160, Invalid=15610, Unknown=0, NotChecked=0, Total=16770 [2022-03-15 19:51:50,788 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 467 mSDsluCounter, 1148 mSDsCounter, 0 mSdLazyCounter, 2132 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 2132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 19:51:50,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [467 Valid, 0 Invalid, 2356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 2132 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 19:51:50,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5932 states. [2022-03-15 19:51:50,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5932 to 1727. [2022-03-15 19:51:50,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1727 states, 1726 states have (on average 3.063151796060255) internal successors, (5287), 1726 states have internal predecessors, (5287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:51:50,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1727 states to 1727 states and 5287 transitions. [2022-03-15 19:51:50,835 INFO L78 Accepts]: Start accepts. Automaton has 1727 states and 5287 transitions. Word has length 36 [2022-03-15 19:51:50,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:51:50,835 INFO L470 AbstractCegarLoop]: Abstraction has 1727 states and 5287 transitions. [2022-03-15 19:51:50,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 29 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:51:50,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1727 states and 5287 transitions. [2022-03-15 19:51:50,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 19:51:50,837 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:51:50,837 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:51:50,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-03-15 19:51:51,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:51:51,054 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:51:51,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:51:51,054 INFO L85 PathProgramCache]: Analyzing trace with hash -2135613588, now seen corresponding path program 53 times [2022-03-15 19:51:51,055 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:51:51,055 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668679434] [2022-03-15 19:51:51,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:51:51,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:51:51,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:51:51,607 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:51:51,607 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:51:51,607 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668679434] [2022-03-15 19:51:51,608 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668679434] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:51:51,608 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818351655] [2022-03-15 19:51:51,608 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 19:51:51,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:51:51,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:51:51,610 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) [2022-03-15 19:51:51,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-03-15 19:51:51,848 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-15 19:51:51,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:51:51,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 74 conjunts are in the unsatisfiable core [2022-03-15 19:51:51,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:51:52,465 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 [2022-03-15 19:51:52,471 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 107 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:51:52,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:51:52,561 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 19:51:52,561 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 28 treesize of output 13 [2022-03-15 19:51:53,082 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 71 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-03-15 19:51:53,083 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818351655] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:51:53,083 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:51:53,083 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24, 12] total 60 [2022-03-15 19:51:53,083 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1225602569] [2022-03-15 19:51:53,083 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:51:53,088 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:51:53,122 INFO L252 McrAutomatonBuilder]: Finished intersection with 78 states and 122 transitions. [2022-03-15 19:51:53,123 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:51:54,069 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [186256#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0)), 186257#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (< ~front~0 0)), 186255#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0))] [2022-03-15 19:51:54,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-15 19:51:54,070 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:51:54,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-15 19:51:54,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=296, Invalid=3864, Unknown=0, NotChecked=0, Total=4160 [2022-03-15 19:51:54,076 INFO L87 Difference]: Start difference. First operand 1727 states and 5287 transitions. Second operand has 31 states, 30 states have (on average 2.466666666666667) internal successors, (74), 30 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:51:57,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:51:57,831 INFO L93 Difference]: Finished difference Result 10576 states and 27506 transitions. [2022-03-15 19:51:57,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-03-15 19:51:57,832 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.466666666666667) internal successors, (74), 30 states have internal predecessors, (74), 0 states have call successors, (0), 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 36 [2022-03-15 19:51:57,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:51:57,849 INFO L225 Difference]: With dead ends: 10576 [2022-03-15 19:51:57,849 INFO L226 Difference]: Without dead ends: 10143 [2022-03-15 19:51:57,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 45 SyntacticMatches, 29 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8665 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=2408, Invalid=32002, Unknown=0, NotChecked=0, Total=34410 [2022-03-15 19:51:57,852 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 821 mSDsluCounter, 1248 mSDsCounter, 0 mSdLazyCounter, 2421 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 2421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 19:51:57,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [821 Valid, 0 Invalid, 2726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 2421 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 19:51:57,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10143 states. [2022-03-15 19:51:57,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10143 to 1751. [2022-03-15 19:51:57,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1751 states, 1750 states have (on average 3.0714285714285716) internal successors, (5375), 1750 states have internal predecessors, (5375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:51:57,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1751 states to 1751 states and 5375 transitions. [2022-03-15 19:51:57,944 INFO L78 Accepts]: Start accepts. Automaton has 1751 states and 5375 transitions. Word has length 36 [2022-03-15 19:51:57,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:51:57,944 INFO L470 AbstractCegarLoop]: Abstraction has 1751 states and 5375 transitions. [2022-03-15 19:51:57,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.466666666666667) internal successors, (74), 30 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:51:57,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1751 states and 5375 transitions. [2022-03-15 19:51:57,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 19:51:57,946 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:51:57,946 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:51:57,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-03-15 19:51:58,167 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,SelfDestructingSolverStorable55 [2022-03-15 19:51:58,167 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:51:58,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:51:58,168 INFO L85 PathProgramCache]: Analyzing trace with hash 215367700, now seen corresponding path program 54 times [2022-03-15 19:51:58,169 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:51:58,169 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091031423] [2022-03-15 19:51:58,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:51:58,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:51:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:51:58,534 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:51:58,535 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:51:58,535 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091031423] [2022-03-15 19:51:58,535 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091031423] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:51:58,535 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201970971] [2022-03-15 19:51:58,535 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 19:51:58,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:51:58,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:51:58,536 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) [2022-03-15 19:51:58,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-03-15 19:51:58,935 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-15 19:51:58,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:51:58,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 58 conjunts are in the unsatisfiable core [2022-03-15 19:51:58,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:51:59,404 INFO L353 Elim1Store]: treesize reduction 12, result has 20.0 percent of original size [2022-03-15 19:51:59,404 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 22 treesize of output 10 [2022-03-15 19:51:59,410 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-03-15 19:51:59,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:51:59,550 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 19:51:59,550 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 28 treesize of output 13 [2022-03-15 19:52:00,049 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 13 proven. 74 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-03-15 19:52:00,049 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201970971] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:52:00,049 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:52:00,049 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 19, 19] total 62 [2022-03-15 19:52:00,049 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1261099743] [2022-03-15 19:52:00,049 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:52:00,054 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:52:00,107 INFO L252 McrAutomatonBuilder]: Finished intersection with 82 states and 131 transitions. [2022-03-15 19:52:00,107 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:52:01,126 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [200854#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (< ~front~0 0)), 200852#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0)), 200855#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 12))) (<= ~size~0 3) (< ~front~0 0)), 200853#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0))] [2022-03-15 19:52:01,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 19:52:01,126 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:52:01,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 19:52:01,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=475, Invalid=4081, Unknown=0, NotChecked=0, Total=4556 [2022-03-15 19:52:01,127 INFO L87 Difference]: Start difference. First operand 1751 states and 5375 transitions. Second operand has 32 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 31 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:52:08,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:52:08,035 INFO L93 Difference]: Finished difference Result 16782 states and 43368 transitions. [2022-03-15 19:52:08,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2022-03-15 19:52:08,036 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 31 states have internal predecessors, (79), 0 states have call successors, (0), 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 36 [2022-03-15 19:52:08,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:52:08,066 INFO L225 Difference]: With dead ends: 16782 [2022-03-15 19:52:08,066 INFO L226 Difference]: Without dead ends: 16033 [2022-03-15 19:52:08,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 60 SyntacticMatches, 15 SemanticMatches, 260 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20952 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=4825, Invalid=63557, Unknown=0, NotChecked=0, Total=68382 [2022-03-15 19:52:08,069 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1232 mSDsluCounter, 1654 mSDsCounter, 0 mSdLazyCounter, 3211 mSolverCounterSat, 357 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1232 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 357 IncrementalHoareTripleChecker+Valid, 3211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-15 19:52:08,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1232 Valid, 0 Invalid, 3568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [357 Valid, 3211 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-15 19:52:08,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16033 states. [2022-03-15 19:52:08,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16033 to 1805. [2022-03-15 19:52:08,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1805 states, 1804 states have (on average 3.0953436807095343) internal successors, (5584), 1804 states have internal predecessors, (5584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:52:08,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1805 states to 1805 states and 5584 transitions. [2022-03-15 19:52:08,170 INFO L78 Accepts]: Start accepts. Automaton has 1805 states and 5584 transitions. Word has length 36 [2022-03-15 19:52:08,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:52:08,170 INFO L470 AbstractCegarLoop]: Abstraction has 1805 states and 5584 transitions. [2022-03-15 19:52:08,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 31 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:52:08,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1805 states and 5584 transitions. [2022-03-15 19:52:08,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 19:52:08,173 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:52:08,173 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:52:08,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-03-15 19:52:08,389 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,SelfDestructingSolverStorable56 [2022-03-15 19:52:08,390 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:52:08,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:52:08,390 INFO L85 PathProgramCache]: Analyzing trace with hash 81343596, now seen corresponding path program 55 times [2022-03-15 19:52:08,391 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:52:08,391 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41332912] [2022-03-15 19:52:08,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:52:08,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:52:08,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:52:08,932 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:52:08,932 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:52:08,932 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41332912] [2022-03-15 19:52:08,932 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41332912] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:52:08,932 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788179215] [2022-03-15 19:52:08,932 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 19:52:08,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:52:08,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:52:08,934 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) [2022-03-15 19:52:08,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-03-15 19:52:09,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:52:09,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 70 conjunts are in the unsatisfiable core [2022-03-15 19:52:09,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:52:09,600 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 [2022-03-15 19:52:09,608 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 107 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:52:09,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:52:09,773 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 19:52:09,774 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 28 treesize of output 13 [2022-03-15 19:52:10,311 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 71 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-03-15 19:52:10,312 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788179215] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:52:10,312 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:52:10,312 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 14] total 55 [2022-03-15 19:52:10,312 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [261466775] [2022-03-15 19:52:10,312 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:52:10,317 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:52:10,350 INFO L252 McrAutomatonBuilder]: Finished intersection with 86 states and 140 transitions. [2022-03-15 19:52:10,350 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:52:11,408 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [221907#(or (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) 16 ~queue~0.offset)) 5) (<= ~size~0 4) (< ~front~0 0)), 221903#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0)), 221904#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0)), 221906#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 12))) (<= ~size~0 3) (< ~front~0 0)), 221905#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (< ~front~0 0))] [2022-03-15 19:52:11,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 19:52:11,409 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:52:11,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 19:52:11,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=3485, Unknown=0, NotChecked=0, Total=3782 [2022-03-15 19:52:11,409 INFO L87 Difference]: Start difference. First operand 1805 states and 5584 transitions. Second operand has 33 states, 32 states have (on average 2.625) internal successors, (84), 32 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:52:22,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:52:22,666 INFO L93 Difference]: Finished difference Result 26845 states and 69551 transitions. [2022-03-15 19:52:22,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 313 states. [2022-03-15 19:52:22,666 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.625) internal successors, (84), 32 states have internal predecessors, (84), 0 states have call successors, (0), 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 36 [2022-03-15 19:52:22,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:52:22,718 INFO L225 Difference]: With dead ends: 26845 [2022-03-15 19:52:22,719 INFO L226 Difference]: Without dead ends: 25416 [2022-03-15 19:52:22,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 59 SyntacticMatches, 26 SemanticMatches, 362 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46668 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=9535, Invalid=122597, Unknown=0, NotChecked=0, Total=132132 [2022-03-15 19:52:22,723 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2073 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 2199 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2073 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 2199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:52:22,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2073 Valid, 0 Invalid, 2642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 2199 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 19:52:22,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25416 states. [2022-03-15 19:52:22,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25416 to 2793. [2022-03-15 19:52:22,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2793 states, 2792 states have (on average 3.186604584527221) internal successors, (8897), 2792 states have internal predecessors, (8897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:52:22,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2793 states to 2793 states and 8897 transitions. [2022-03-15 19:52:22,907 INFO L78 Accepts]: Start accepts. Automaton has 2793 states and 8897 transitions. Word has length 36 [2022-03-15 19:52:22,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:52:22,908 INFO L470 AbstractCegarLoop]: Abstraction has 2793 states and 8897 transitions. [2022-03-15 19:52:22,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.625) internal successors, (84), 32 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:52:22,908 INFO L276 IsEmpty]: Start isEmpty. Operand 2793 states and 8897 transitions. [2022-03-15 19:52:22,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 19:52:22,911 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:52:22,911 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:52:22,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-03-15 19:52:23,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:52:23,127 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:52:23,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:52:23,128 INFO L85 PathProgramCache]: Analyzing trace with hash 221563668, now seen corresponding path program 56 times [2022-03-15 19:52:23,129 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:52:23,129 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593457730] [2022-03-15 19:52:23,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:52:23,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:52:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:52:23,663 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:52:23,664 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:52:23,664 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593457730] [2022-03-15 19:52:23,664 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593457730] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:52:23,664 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677170589] [2022-03-15 19:52:23,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 19:52:23,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:52:23,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:52:23,665 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) [2022-03-15 19:52:23,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-03-15 19:52:23,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 19:52:23,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:52:23,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 52 conjunts are in the unsatisfiable core [2022-03-15 19:52:23,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:52:24,338 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 [2022-03-15 19:52:24,346 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-03-15 19:52:24,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:52:24,509 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 19:52:24,509 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 28 treesize of output 13 [2022-03-15 19:52:24,774 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 71 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-03-15 19:52:24,774 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677170589] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:52:24,774 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:52:24,774 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 18, 15] total 56 [2022-03-15 19:52:24,774 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [112696700] [2022-03-15 19:52:24,774 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:52:24,779 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:52:24,817 INFO L252 McrAutomatonBuilder]: Finished intersection with 90 states and 149 transitions. [2022-03-15 19:52:24,817 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:52:25,824 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 6 new interpolants: [255212#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0)), 255214#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 12))) (<= ~size~0 3) (< ~front~0 0)), 255213#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (< ~front~0 0)), 255215#(or (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) 16 ~queue~0.offset)) 5) (<= ~size~0 4) (< ~front~0 0)), 255216#(or (<= ~size~0 5) (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 20)) 5) (< ~front~0 0)), 255211#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0))] [2022-03-15 19:52:25,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 19:52:25,824 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:52:25,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 19:52:25,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=3702, Unknown=0, NotChecked=0, Total=4032 [2022-03-15 19:52:25,825 INFO L87 Difference]: Start difference. First operand 2793 states and 8897 transitions. Second operand has 34 states, 33 states have (on average 2.696969696969697) internal successors, (89), 33 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:52:35,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:52:35,020 INFO L93 Difference]: Finished difference Result 18316 states and 50766 transitions. [2022-03-15 19:52:35,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 234 states. [2022-03-15 19:52:35,021 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.696969696969697) internal successors, (89), 33 states have internal predecessors, (89), 0 states have call successors, (0), 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 36 [2022-03-15 19:52:35,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:52:35,054 INFO L225 Difference]: With dead ends: 18316 [2022-03-15 19:52:35,054 INFO L226 Difference]: Without dead ends: 17518 [2022-03-15 19:52:35,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 71 SyntacticMatches, 16 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26421 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=8442, Invalid=73640, Unknown=0, NotChecked=0, Total=82082 [2022-03-15 19:52:35,058 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 933 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 1575 mSolverCounterSat, 484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 484 IncrementalHoareTripleChecker+Valid, 1575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 19:52:35,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [933 Valid, 0 Invalid, 2059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [484 Valid, 1575 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 19:52:35,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17518 states. [2022-03-15 19:52:35,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17518 to 2801. [2022-03-15 19:52:35,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2801 states, 2800 states have (on average 3.1846428571428573) internal successors, (8917), 2800 states have internal predecessors, (8917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:52:35,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2801 states to 2801 states and 8917 transitions. [2022-03-15 19:52:35,207 INFO L78 Accepts]: Start accepts. Automaton has 2801 states and 8917 transitions. Word has length 36 [2022-03-15 19:52:35,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:52:35,207 INFO L470 AbstractCegarLoop]: Abstraction has 2801 states and 8917 transitions. [2022-03-15 19:52:35,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.696969696969697) internal successors, (89), 33 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:52:35,207 INFO L276 IsEmpty]: Start isEmpty. Operand 2801 states and 8917 transitions. [2022-03-15 19:52:35,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 19:52:35,210 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:52:35,210 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:52:35,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-03-15 19:52:35,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:52:35,414 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:52:35,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:52:35,415 INFO L85 PathProgramCache]: Analyzing trace with hash 273418604, now seen corresponding path program 57 times [2022-03-15 19:52:35,415 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:52:35,416 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629551469] [2022-03-15 19:52:35,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:52:35,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:52:35,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:52:35,926 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:52:35,926 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:52:35,927 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629551469] [2022-03-15 19:52:35,927 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629551469] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:52:35,927 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676615180] [2022-03-15 19:52:35,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 19:52:35,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:52:35,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:52:35,928 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) [2022-03-15 19:52:35,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-03-15 19:52:36,310 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-03-15 19:52:36,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:52:36,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 116 conjunts are in the unsatisfiable core [2022-03-15 19:52:36,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:52:36,693 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 [2022-03-15 19:52:36,750 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 [2022-03-15 19:52:36,788 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 [2022-03-15 19:52:37,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:52:37,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:52:37,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:52:37,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:52:37,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:52:37,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:52:37,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:52:37,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:52:37,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:52:37,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:52:37,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:52:37,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:52:37,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:52:37,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:52:37,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:52:37,782 INFO L353 Elim1Store]: treesize reduction 76, result has 3.8 percent of original size [2022-03-15 19:52:37,783 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 21 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 67 treesize of output 28 [2022-03-15 19:52:37,789 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 5 proven. 97 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-15 19:52:37,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:52:40,838 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:52:40,838 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 267 treesize of output 183 [2022-03-15 19:52:40,912 INFO L353 Elim1Store]: treesize reduction 550, result has 13.8 percent of original size [2022-03-15 19:52:40,913 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 680 treesize of output 676 [2022-03-15 19:52:40,933 INFO L353 Elim1Store]: treesize reduction 637, result has 0.2 percent of original size [2022-03-15 19:52:40,933 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 589 treesize of output 439 [2022-03-15 19:52:40,962 INFO L353 Elim1Store]: treesize reduction 637, result has 0.2 percent of original size [2022-03-15 19:52:40,962 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 418 treesize of output 343 [2022-03-15 19:52:41,626 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 20 proven. 78 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-15 19:52:41,626 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676615180] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:52:41,627 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:52:41,627 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24, 23] total 71 [2022-03-15 19:52:41,627 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1160565839] [2022-03-15 19:52:41,627 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:52:41,641 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:52:41,681 INFO L252 McrAutomatonBuilder]: Finished intersection with 94 states and 158 transitions. [2022-03-15 19:52:41,681 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:52:43,204 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 7 new interpolants: [279868#(or (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) 16 ~queue~0.offset)) 5) (<= ~size~0 4) (< ~front~0 0)), 279869#(or (<= ~size~0 5) (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 20)) 5) (< ~front~0 0)), 279865#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0)), 279870#(or (<= ~size~0 6) (< ~front~0 0) (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 24)) 5)), 279864#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0)), 279867#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 12))) (<= ~size~0 3) (< ~front~0 0)), 279866#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (< ~front~0 0))] [2022-03-15 19:52:43,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-15 19:52:43,204 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:52:43,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-15 19:52:43,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=802, Invalid=5507, Unknown=11, NotChecked=0, Total=6320 [2022-03-15 19:52:43,205 INFO L87 Difference]: Start difference. First operand 2801 states and 8917 transitions. Second operand has 35 states, 34 states have (on average 2.764705882352941) internal successors, (94), 34 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:52:50,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:52:50,602 INFO L93 Difference]: Finished difference Result 10698 states and 29131 transitions. [2022-03-15 19:52:50,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2022-03-15 19:52:50,602 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.764705882352941) internal successors, (94), 34 states have internal predecessors, (94), 0 states have call successors, (0), 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 36 [2022-03-15 19:52:50,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:52:50,621 INFO L225 Difference]: With dead ends: 10698 [2022-03-15 19:52:50,621 INFO L226 Difference]: Without dead ends: 10435 [2022-03-15 19:52:50,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 61 SyntacticMatches, 14 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21991 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=7152, Invalid=51643, Unknown=11, NotChecked=0, Total=58806 [2022-03-15 19:52:50,625 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1064 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 1473 mSolverCounterSat, 509 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1064 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 509 IncrementalHoareTripleChecker+Valid, 1473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 19:52:50,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1064 Valid, 0 Invalid, 1982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [509 Valid, 1473 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 19:52:50,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10435 states. [2022-03-15 19:52:50,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10435 to 2803. [2022-03-15 19:52:50,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2803 states, 2802 states have (on average 3.184154175588865) internal successors, (8922), 2802 states have internal predecessors, (8922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:52:50,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2803 states to 2803 states and 8922 transitions. [2022-03-15 19:52:50,716 INFO L78 Accepts]: Start accepts. Automaton has 2803 states and 8922 transitions. Word has length 36 [2022-03-15 19:52:50,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:52:50,716 INFO L470 AbstractCegarLoop]: Abstraction has 2803 states and 8922 transitions. [2022-03-15 19:52:50,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.764705882352941) internal successors, (94), 34 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:52:50,716 INFO L276 IsEmpty]: Start isEmpty. Operand 2803 states and 8922 transitions. [2022-03-15 19:52:50,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 19:52:50,719 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:52:50,719 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:52:50,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-03-15 19:52:50,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-03-15 19:52:50,936 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:52:50,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:52:50,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1880921620, now seen corresponding path program 58 times [2022-03-15 19:52:50,938 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:52:50,938 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144931591] [2022-03-15 19:52:50,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:52:50,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:52:50,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:52:51,461 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:52:51,461 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:52:51,461 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144931591] [2022-03-15 19:52:51,462 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144931591] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:52:51,462 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662999342] [2022-03-15 19:52:51,462 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 19:52:51,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:52:51,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:52:51,463 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) [2022-03-15 19:52:51,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-03-15 19:52:51,644 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 19:52:51,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:52:51,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 48 conjunts are in the unsatisfiable core [2022-03-15 19:52:51,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:52:52,112 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 [2022-03-15 19:52:52,119 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-03-15 19:52:52,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:52:52,377 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 19:52:52,377 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 28 treesize of output 13 [2022-03-15 19:52:52,653 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-03-15 19:52:52,654 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662999342] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:52:52,654 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:52:52,654 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 18, 17] total 58 [2022-03-15 19:52:52,654 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1005318136] [2022-03-15 19:52:52,654 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:52:52,683 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:52:52,755 INFO L252 McrAutomatonBuilder]: Finished intersection with 100 states and 171 transitions. [2022-03-15 19:52:52,755 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:52:54,694 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 8 new interpolants: [296775#(or (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) 16 ~queue~0.offset)) 5) (<= ~size~0 4) (< ~front~0 0)), 296777#(or (<= ~size~0 6) (< ~front~0 0) (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 24)) 5)), 296776#(or (<= ~size~0 5) (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 20)) 5) (< ~front~0 0)), 296778#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 28))) (<= ~size~0 7) (< ~front~0 0)), 296771#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0)), 296774#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 12))) (<= ~size~0 3) (< ~front~0 0)), 296773#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (< ~front~0 0)), 296772#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0))] [2022-03-15 19:52:54,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-03-15 19:52:54,694 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:52:54,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-03-15 19:52:54,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=4152, Unknown=0, NotChecked=0, Total=4556 [2022-03-15 19:52:54,695 INFO L87 Difference]: Start difference. First operand 2803 states and 8922 transitions. Second operand has 36 states, 35 states have (on average 2.8857142857142857) internal successors, (101), 35 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:53:03,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:53:03,606 INFO L93 Difference]: Finished difference Result 14198 states and 40075 transitions. [2022-03-15 19:53:03,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2022-03-15 19:53:03,606 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.8857142857142857) internal successors, (101), 35 states have internal predecessors, (101), 0 states have call successors, (0), 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 36 [2022-03-15 19:53:03,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:53:03,632 INFO L225 Difference]: With dead ends: 14198 [2022-03-15 19:53:03,632 INFO L226 Difference]: Without dead ends: 13875 [2022-03-15 19:53:03,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 80 SyntacticMatches, 13 SemanticMatches, 259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21870 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=9046, Invalid=58814, Unknown=0, NotChecked=0, Total=67860 [2022-03-15 19:53:03,634 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1291 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 1593 mSolverCounterSat, 621 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1291 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 621 IncrementalHoareTripleChecker+Valid, 1593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 19:53:03,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1291 Valid, 0 Invalid, 2214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [621 Valid, 1593 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 19:53:03,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13875 states. [2022-03-15 19:53:03,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13875 to 2879. [2022-03-15 19:53:03,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2879 states, 2878 states have (on average 3.1640027797081305) internal successors, (9106), 2878 states have internal predecessors, (9106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:53:03,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2879 states to 2879 states and 9106 transitions. [2022-03-15 19:53:03,737 INFO L78 Accepts]: Start accepts. Automaton has 2879 states and 9106 transitions. Word has length 36 [2022-03-15 19:53:03,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:53:03,737 INFO L470 AbstractCegarLoop]: Abstraction has 2879 states and 9106 transitions. [2022-03-15 19:53:03,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.8857142857142857) internal successors, (101), 35 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:53:03,738 INFO L276 IsEmpty]: Start isEmpty. Operand 2879 states and 9106 transitions. [2022-03-15 19:53:03,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 19:53:03,739 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:53:03,740 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:53:03,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-03-15 19:53:03,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:53:03,944 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:53:03,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:53:03,945 INFO L85 PathProgramCache]: Analyzing trace with hash 546043842, now seen corresponding path program 59 times [2022-03-15 19:53:03,946 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:53:03,946 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047048674] [2022-03-15 19:53:03,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:53:03,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:53:04,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:53:04,568 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:53:04,568 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:53:04,568 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047048674] [2022-03-15 19:53:04,568 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047048674] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:53:04,568 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670743408] [2022-03-15 19:53:04,568 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 19:53:04,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:53:04,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:53:04,569 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) [2022-03-15 19:53:04,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-03-15 19:53:04,865 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-03-15 19:53:04,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:53:04,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 59 conjunts are in the unsatisfiable core [2022-03-15 19:53:04,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:53:05,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:53:05,286 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 19 treesize of output 21 [2022-03-15 19:53:05,544 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 [2022-03-15 19:53:05,552 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-03-15 19:53:05,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:53:05,799 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2802 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2802) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 28)))) is different from false [2022-03-15 19:53:05,806 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:53:05,807 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 47 treesize of output 47 [2022-03-15 19:53:05,809 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 14 treesize of output 7 [2022-03-15 19:53:06,174 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-03-15 19:53:06,174 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670743408] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:53:06,174 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:53:06,174 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 19, 19] total 62 [2022-03-15 19:53:06,174 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [17144458] [2022-03-15 19:53:06,174 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:53:06,179 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:53:06,213 INFO L252 McrAutomatonBuilder]: Finished intersection with 85 states and 141 transitions. [2022-03-15 19:53:06,213 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:53:07,315 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 8 new interpolants: [317399#(or (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) 16 ~queue~0.offset)) 5) (<= ~size~0 4) (< ~front~0 0)), 317400#(or (<= ~size~0 5) (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 20)) 5) (< ~front~0 0)), 317395#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0)), 317396#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0)), 317401#(or (<= ~size~0 6) (< ~front~0 0) (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 24)) 5)), 317402#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 28))) (<= ~size~0 7) (< ~front~0 0)), 317397#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (< ~front~0 0)), 317398#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 12))) (<= ~size~0 3) (< ~front~0 0))] [2022-03-15 19:53:07,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-15 19:53:07,316 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:53:07,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-15 19:53:07,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=432, Invalid=4541, Unknown=1, NotChecked=138, Total=5112 [2022-03-15 19:53:07,317 INFO L87 Difference]: Start difference. First operand 2879 states and 9106 transitions. Second operand has 37 states, 36 states have (on average 2.5833333333333335) internal successors, (93), 36 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:53:09,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:53:09,843 INFO L93 Difference]: Finished difference Result 6458 states and 18637 transitions. [2022-03-15 19:53:09,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-03-15 19:53:09,844 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.5833333333333335) internal successors, (93), 36 states have internal predecessors, (93), 0 states have call successors, (0), 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 36 [2022-03-15 19:53:09,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:53:09,854 INFO L225 Difference]: With dead ends: 6458 [2022-03-15 19:53:09,855 INFO L226 Difference]: Without dead ends: 6451 [2022-03-15 19:53:09,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 123 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3359 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2011, Invalid=13244, Unknown=1, NotChecked=244, Total=15500 [2022-03-15 19:53:09,856 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 350 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 1421 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 1421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 19:53:09,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 0 Invalid, 1692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 1421 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 19:53:09,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6451 states. [2022-03-15 19:53:09,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6451 to 2877. [2022-03-15 19:53:09,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2877 states, 2876 states have (on average 3.1648122392211406) internal successors, (9102), 2876 states have internal predecessors, (9102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:53:09,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2877 states to 2877 states and 9102 transitions. [2022-03-15 19:53:09,915 INFO L78 Accepts]: Start accepts. Automaton has 2877 states and 9102 transitions. Word has length 36 [2022-03-15 19:53:09,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:53:09,915 INFO L470 AbstractCegarLoop]: Abstraction has 2877 states and 9102 transitions. [2022-03-15 19:53:09,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.5833333333333335) internal successors, (93), 36 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:53:09,916 INFO L276 IsEmpty]: Start isEmpty. Operand 2877 states and 9102 transitions. [2022-03-15 19:53:09,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-03-15 19:53:09,918 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:53:09,918 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:53:09,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-03-15 19:53:10,132 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,SelfDestructingSolverStorable61 [2022-03-15 19:53:10,132 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:53:10,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:53:10,133 INFO L85 PathProgramCache]: Analyzing trace with hash -318163056, now seen corresponding path program 60 times [2022-03-15 19:53:10,133 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:53:10,133 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548129462] [2022-03-15 19:53:10,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:53:10,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:53:10,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:53:10,221 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 53 proven. 28 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-03-15 19:53:10,221 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:53:10,221 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548129462] [2022-03-15 19:53:10,221 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548129462] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:53:10,221 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058653516] [2022-03-15 19:53:10,221 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 19:53:10,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:53:10,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:53:10,222 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) [2022-03-15 19:53:10,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-03-15 19:53:10,685 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-03-15 19:53:10,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:53:10,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-15 19:53:10,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:53:10,742 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 53 proven. 28 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-03-15 19:53:10,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:53:10,799 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 53 proven. 28 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-03-15 19:53:10,799 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058653516] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:53:10,799 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:53:10,799 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 11 [2022-03-15 19:53:10,799 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [272819120] [2022-03-15 19:53:10,800 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:53:10,805 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:53:10,873 INFO L252 McrAutomatonBuilder]: Finished intersection with 106 states and 183 transitions. [2022-03-15 19:53:10,873 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:53:11,397 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 19:53:11,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 19:53:11,397 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:53:11,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 19:53:11,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-03-15 19:53:11,398 INFO L87 Difference]: Start difference. First operand 2877 states and 9102 transitions. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:53:11,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:53:11,505 INFO L93 Difference]: Finished difference Result 4099 states and 12229 transitions. [2022-03-15 19:53:11,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-15 19:53:11,505 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 0 states have call successors, (0), 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 37 [2022-03-15 19:53:11,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:53:11,512 INFO L225 Difference]: With dead ends: 4099 [2022-03-15 19:53:11,512 INFO L226 Difference]: Without dead ends: 4061 [2022-03-15 19:53:11,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-03-15 19:53:11,512 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 104 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:53:11,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 0 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 19:53:11,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4061 states. [2022-03-15 19:53:11,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4061 to 3277. [2022-03-15 19:53:11,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3277 states, 3276 states have (on average 3.121794871794872) internal successors, (10227), 3276 states have internal predecessors, (10227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:53:11,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3277 states to 3277 states and 10227 transitions. [2022-03-15 19:53:11,575 INFO L78 Accepts]: Start accepts. Automaton has 3277 states and 10227 transitions. Word has length 37 [2022-03-15 19:53:11,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:53:11,575 INFO L470 AbstractCegarLoop]: Abstraction has 3277 states and 10227 transitions. [2022-03-15 19:53:11,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:53:11,575 INFO L276 IsEmpty]: Start isEmpty. Operand 3277 states and 10227 transitions. [2022-03-15 19:53:11,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-03-15 19:53:11,578 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:53:11,578 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:53:11,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-03-15 19:53:11,795 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,SelfDestructingSolverStorable62 [2022-03-15 19:53:11,796 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:53:11,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:53:11,797 INFO L85 PathProgramCache]: Analyzing trace with hash 726157056, now seen corresponding path program 61 times [2022-03-15 19:53:11,798 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:53:11,798 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631418426] [2022-03-15 19:53:11,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:53:11,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:53:11,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:53:12,001 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 46 proven. 51 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-03-15 19:53:12,001 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:53:12,001 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631418426] [2022-03-15 19:53:12,002 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631418426] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:53:12,002 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485937450] [2022-03-15 19:53:12,002 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 19:53:12,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:53:12,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:53:12,003 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) [2022-03-15 19:53:12,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-03-15 19:53:12,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:53:12,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 19:53:12,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:53:12,592 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 61 proven. 36 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-03-15 19:53:12,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:53:13,080 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 53 proven. 44 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-03-15 19:53:13,080 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485937450] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:53:13,080 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:53:13,080 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 55 [2022-03-15 19:53:13,080 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [425529056] [2022-03-15 19:53:13,080 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:53:13,085 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:53:13,121 INFO L252 McrAutomatonBuilder]: Finished intersection with 75 states and 112 transitions. [2022-03-15 19:53:13,121 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:53:13,515 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [340880#(or (<= ~size~0 0) (<= ~n~0 ~front~0) (< ~front~0 0))] [2022-03-15 19:53:13,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 19:53:13,516 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:53:13,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 19:53:13,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=784, Invalid=2408, Unknown=0, NotChecked=0, Total=3192 [2022-03-15 19:53:13,519 INFO L87 Difference]: Start difference. First operand 3277 states and 10227 transitions. Second operand has 21 states, 21 states have (on average 2.142857142857143) internal successors, (45), 20 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:53:14,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:53:14,029 INFO L93 Difference]: Finished difference Result 5089 states and 14163 transitions. [2022-03-15 19:53:14,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-15 19:53:14,030 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.142857142857143) internal successors, (45), 20 states have internal predecessors, (45), 0 states have call successors, (0), 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 38 [2022-03-15 19:53:14,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:53:14,035 INFO L225 Difference]: With dead ends: 5089 [2022-03-15 19:53:14,035 INFO L226 Difference]: Without dead ends: 3278 [2022-03-15 19:53:14,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1382 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1047, Invalid=3645, Unknown=0, NotChecked=0, Total=4692 [2022-03-15 19:53:14,037 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 56 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 19:53:14,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 0 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 19:53:14,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3278 states. [2022-03-15 19:53:14,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3278 to 3278. [2022-03-15 19:53:14,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3278 states, 3277 states have (on average 3.1211473909063168) internal successors, (10228), 3277 states have internal predecessors, (10228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:53:14,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3278 states to 3278 states and 10228 transitions. [2022-03-15 19:53:14,081 INFO L78 Accepts]: Start accepts. Automaton has 3278 states and 10228 transitions. Word has length 38 [2022-03-15 19:53:14,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:53:14,082 INFO L470 AbstractCegarLoop]: Abstraction has 3278 states and 10228 transitions. [2022-03-15 19:53:14,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.142857142857143) internal successors, (45), 20 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:53:14,082 INFO L276 IsEmpty]: Start isEmpty. Operand 3278 states and 10228 transitions. [2022-03-15 19:53:14,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-15 19:53:14,084 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:53:14,084 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:53:14,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2022-03-15 19:53:14,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:53:14,302 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:53:14,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:53:14,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1365490024, now seen corresponding path program 62 times [2022-03-15 19:53:14,303 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:53:14,303 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883330221] [2022-03-15 19:53:14,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:53:14,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:53:14,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:53:14,907 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 21 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:53:14,908 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:53:14,908 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883330221] [2022-03-15 19:53:14,908 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883330221] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:53:14,908 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851920899] [2022-03-15 19:53:14,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 19:53:14,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:53:14,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:53:14,909 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) [2022-03-15 19:53:14,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-03-15 19:53:15,102 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 19:53:15,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:53:15,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 71 conjunts are in the unsatisfiable core [2022-03-15 19:53:15,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:53:15,746 INFO L353 Elim1Store]: treesize reduction 12, result has 20.0 percent of original size [2022-03-15 19:53:15,747 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 22 treesize of output 10 [2022-03-15 19:53:15,753 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:53:15,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:53:15,788 INFO L353 Elim1Store]: treesize reduction 14, result has 26.3 percent of original size [2022-03-15 19:53:15,789 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 27 treesize of output 13 [2022-03-15 19:53:16,090 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 36 proven. 54 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-03-15 19:53:16,091 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851920899] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:53:16,095 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:53:16,095 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 27, 12] total 66 [2022-03-15 19:53:16,095 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1853182543] [2022-03-15 19:53:16,095 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:53:16,101 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:53:16,172 INFO L252 McrAutomatonBuilder]: Finished intersection with 76 states and 113 transitions. [2022-03-15 19:53:16,173 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:53:16,549 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [352846#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0))] [2022-03-15 19:53:16,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 19:53:16,550 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:53:16,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 19:53:16,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=922, Invalid=3770, Unknown=0, NotChecked=0, Total=4692 [2022-03-15 19:53:16,550 INFO L87 Difference]: Start difference. First operand 3278 states and 10228 transitions. Second operand has 32 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 31 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:53:18,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:53:18,127 INFO L93 Difference]: Finished difference Result 5649 states and 15941 transitions. [2022-03-15 19:53:18,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-15 19:53:18,127 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 31 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-03-15 19:53:18,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:53:18,136 INFO L225 Difference]: With dead ends: 5649 [2022-03-15 19:53:18,136 INFO L226 Difference]: Without dead ends: 5514 [2022-03-15 19:53:18,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2528 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2522, Invalid=11284, Unknown=0, NotChecked=0, Total=13806 [2022-03-15 19:53:18,137 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 386 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 19:53:18,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 0 Invalid, 1338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 19:53:18,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5514 states. [2022-03-15 19:53:18,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5514 to 3354. [2022-03-15 19:53:18,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3354 states, 3353 states have (on average 3.1452430659111243) internal successors, (10546), 3353 states have internal predecessors, (10546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:53:18,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3354 states to 3354 states and 10546 transitions. [2022-03-15 19:53:18,189 INFO L78 Accepts]: Start accepts. Automaton has 3354 states and 10546 transitions. Word has length 39 [2022-03-15 19:53:18,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:53:18,189 INFO L470 AbstractCegarLoop]: Abstraction has 3354 states and 10546 transitions. [2022-03-15 19:53:18,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 31 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:53:18,189 INFO L276 IsEmpty]: Start isEmpty. Operand 3354 states and 10546 transitions. [2022-03-15 19:53:18,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-15 19:53:18,192 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:53:18,192 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:53:18,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-03-15 19:53:18,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:53:18,399 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:53:18,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:53:18,399 INFO L85 PathProgramCache]: Analyzing trace with hash 643658048, now seen corresponding path program 63 times [2022-03-15 19:53:18,400 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:53:18,400 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528184664] [2022-03-15 19:53:18,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:53:18,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:53:18,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:53:19,001 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:53:19,001 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:53:19,001 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528184664] [2022-03-15 19:53:19,001 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528184664] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:53:19,001 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353759506] [2022-03-15 19:53:19,001 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 19:53:19,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:53:19,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:53:19,003 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) [2022-03-15 19:53:19,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-03-15 19:53:19,814 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-03-15 19:53:19,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:53:19,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 39 conjunts are in the unsatisfiable core [2022-03-15 19:53:19,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:53:22,569 INFO L353 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2022-03-15 19:53:22,569 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 27 treesize of output 10 [2022-03-15 19:53:22,578 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 29 proven. 77 refuted. 1 times theorem prover too weak. 28 trivial. 0 not checked. [2022-03-15 19:53:22,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:53:22,676 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 19:53:22,677 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 28 treesize of output 13 [2022-03-15 19:53:23,492 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 29 proven. 78 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-03-15 19:53:23,493 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353759506] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:53:23,493 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:53:23,493 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 21, 21] total 69 [2022-03-15 19:53:23,493 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2023445456] [2022-03-15 19:53:23,493 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:53:23,498 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:53:23,538 INFO L252 McrAutomatonBuilder]: Finished intersection with 80 states and 122 transitions. [2022-03-15 19:53:23,538 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:53:24,285 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [365601#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0)), 365602#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0))] [2022-03-15 19:53:24,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 19:53:24,285 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:53:24,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 19:53:24,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=616, Invalid=4639, Unknown=1, NotChecked=0, Total=5256 [2022-03-15 19:53:24,286 INFO L87 Difference]: Start difference. First operand 3354 states and 10546 transitions. Second operand has 33 states, 32 states have (on average 2.34375) internal successors, (75), 32 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:53:27,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:53:27,541 INFO L93 Difference]: Finished difference Result 9040 states and 24332 transitions. [2022-03-15 19:53:27,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-03-15 19:53:27,542 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.34375) internal successors, (75), 32 states have internal predecessors, (75), 0 states have call successors, (0), 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 39 [2022-03-15 19:53:27,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:53:27,556 INFO L225 Difference]: With dead ends: 9040 [2022-03-15 19:53:27,556 INFO L226 Difference]: Without dead ends: 8767 [2022-03-15 19:53:27,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 54 SyntacticMatches, 20 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6135 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=1620, Invalid=23185, Unknown=1, NotChecked=0, Total=24806 [2022-03-15 19:53:27,557 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 532 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 2516 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 2516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-15 19:53:27,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [532 Valid, 0 Invalid, 2749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 2516 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-15 19:53:27,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8767 states. [2022-03-15 19:53:27,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8767 to 3354. [2022-03-15 19:53:27,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3354 states, 3353 states have (on average 3.1416641813301522) internal successors, (10534), 3353 states have internal predecessors, (10534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:53:27,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3354 states to 3354 states and 10534 transitions. [2022-03-15 19:53:27,631 INFO L78 Accepts]: Start accepts. Automaton has 3354 states and 10534 transitions. Word has length 39 [2022-03-15 19:53:27,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:53:27,631 INFO L470 AbstractCegarLoop]: Abstraction has 3354 states and 10534 transitions. [2022-03-15 19:53:27,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.34375) internal successors, (75), 32 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:53:27,631 INFO L276 IsEmpty]: Start isEmpty. Operand 3354 states and 10534 transitions. [2022-03-15 19:53:27,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-15 19:53:27,634 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:53:27,634 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:53:27,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-03-15 19:53:27,852 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,SelfDestructingSolverStorable65 [2022-03-15 19:53:27,852 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:53:27,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:53:27,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1497261160, now seen corresponding path program 64 times [2022-03-15 19:53:27,853 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:53:27,853 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195558167] [2022-03-15 19:53:27,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:53:27,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:53:27,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:53:28,429 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:53:28,430 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:53:28,430 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195558167] [2022-03-15 19:53:28,430 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195558167] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:53:28,430 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674862056] [2022-03-15 19:53:28,430 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 19:53:28,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:53:28,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:53:28,431 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) [2022-03-15 19:53:28,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-03-15 19:53:28,631 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 19:53:28,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:53:28,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 64 conjunts are in the unsatisfiable core [2022-03-15 19:53:28,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:53:29,208 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 [2022-03-15 19:53:29,217 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-03-15 19:53:29,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:53:29,340 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 19:53:29,340 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 28 treesize of output 13 [2022-03-15 19:53:29,896 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-15 19:53:29,896 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674862056] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:53:29,896 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:53:29,896 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 20, 13] total 59 [2022-03-15 19:53:29,897 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [269003281] [2022-03-15 19:53:29,897 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:53:29,902 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:53:29,983 INFO L252 McrAutomatonBuilder]: Finished intersection with 84 states and 131 transitions. [2022-03-15 19:53:29,983 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:53:30,880 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [381810#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0)), 381811#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0)), 381812#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (< ~front~0 0))] [2022-03-15 19:53:30,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 19:53:30,880 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:53:30,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 19:53:30,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=3770, Unknown=0, NotChecked=0, Total=4032 [2022-03-15 19:53:30,881 INFO L87 Difference]: Start difference. First operand 3354 states and 10534 transitions. Second operand has 34 states, 33 states have (on average 2.4242424242424243) internal successors, (80), 33 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:53:36,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:53:36,089 INFO L93 Difference]: Finished difference Result 13914 states and 36689 transitions. [2022-03-15 19:53:36,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2022-03-15 19:53:36,089 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.4242424242424243) internal successors, (80), 33 states have internal predecessors, (80), 0 states have call successors, (0), 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 39 [2022-03-15 19:53:36,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:53:36,118 INFO L225 Difference]: With dead ends: 13914 [2022-03-15 19:53:36,119 INFO L226 Difference]: Without dead ends: 13465 [2022-03-15 19:53:36,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 61 SyntacticMatches, 26 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11401 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=2815, Invalid=40241, Unknown=0, NotChecked=0, Total=43056 [2022-03-15 19:53:36,121 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 797 mSDsluCounter, 1818 mSDsCounter, 0 mSdLazyCounter, 3474 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 3474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-15 19:53:36,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [797 Valid, 0 Invalid, 3766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 3474 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-15 19:53:36,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13465 states. [2022-03-15 19:53:36,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13465 to 3536. [2022-03-15 19:53:36,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3536 states, 3535 states have (on average 3.1753889674681752) internal successors, (11225), 3535 states have internal predecessors, (11225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:53:36,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3536 states to 3536 states and 11225 transitions. [2022-03-15 19:53:36,238 INFO L78 Accepts]: Start accepts. Automaton has 3536 states and 11225 transitions. Word has length 39 [2022-03-15 19:53:36,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:53:36,238 INFO L470 AbstractCegarLoop]: Abstraction has 3536 states and 11225 transitions. [2022-03-15 19:53:36,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.4242424242424243) internal successors, (80), 33 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:53:36,238 INFO L276 IsEmpty]: Start isEmpty. Operand 3536 states and 11225 transitions. [2022-03-15 19:53:36,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-15 19:53:36,242 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:53:36,242 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:53:36,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-03-15 19:53:36,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2022-03-15 19:53:36,459 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:53:36,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:53:36,459 INFO L85 PathProgramCache]: Analyzing trace with hash 853720128, now seen corresponding path program 65 times [2022-03-15 19:53:36,461 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:53:36,461 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464035530] [2022-03-15 19:53:36,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:53:36,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:53:36,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:53:37,121 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:53:37,121 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:53:37,121 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464035530] [2022-03-15 19:53:37,121 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464035530] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:53:37,121 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17041120] [2022-03-15 19:53:37,121 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 19:53:37,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:53:37,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:53:37,122 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) [2022-03-15 19:53:37,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-03-15 19:53:37,506 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-03-15 19:53:37,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:53:37,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 82 conjunts are in the unsatisfiable core [2022-03-15 19:53:37,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:53:37,904 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 13 treesize of output 9 [2022-03-15 19:53:37,954 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 [2022-03-15 19:53:38,004 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 [2022-03-15 19:53:38,804 INFO L353 Elim1Store]: treesize reduction 12, result has 20.0 percent of original size [2022-03-15 19:53:38,804 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 22 treesize of output 10 [2022-03-15 19:53:38,813 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:53:38,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:53:40,557 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:53:40,558 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 53 [2022-03-15 19:53:40,565 INFO L353 Elim1Store]: treesize reduction 16, result has 23.8 percent of original size [2022-03-15 19:53:40,565 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 340 treesize of output 303 [2022-03-15 19:53:40,571 INFO L353 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-03-15 19:53:40,572 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 298 treesize of output 230 [2022-03-15 19:53:40,578 INFO L353 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-03-15 19:53:40,578 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 184 treesize of output 150 [2022-03-15 19:53:40,695 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 90 refuted. 9 times theorem prover too weak. 36 trivial. 0 not checked. [2022-03-15 19:53:40,695 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17041120] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:53:40,695 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:53:40,695 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 30, 22] total 79 [2022-03-15 19:53:40,695 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1721050474] [2022-03-15 19:53:40,695 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:53:40,701 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:53:40,744 INFO L252 McrAutomatonBuilder]: Finished intersection with 88 states and 140 transitions. [2022-03-15 19:53:40,744 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:53:41,975 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [403397#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0)), 403396#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0)), 403398#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (< ~front~0 0)), 403399#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 12))) (<= ~size~0 3) (< ~front~0 0))] [2022-03-15 19:53:41,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-15 19:53:41,975 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:53:41,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-15 19:53:41,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1383, Invalid=5705, Unknown=52, NotChecked=0, Total=7140 [2022-03-15 19:53:41,976 INFO L87 Difference]: Start difference. First operand 3536 states and 11225 transitions. Second operand has 35 states, 34 states have (on average 2.5) internal successors, (85), 34 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:53:52,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:53:52,807 INFO L93 Difference]: Finished difference Result 24235 states and 64174 transitions. [2022-03-15 19:53:52,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 251 states. [2022-03-15 19:53:52,807 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.5) internal successors, (85), 34 states have internal predecessors, (85), 0 states have call successors, (0), 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 39 [2022-03-15 19:53:52,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:53:52,849 INFO L225 Difference]: With dead ends: 24235 [2022-03-15 19:53:52,849 INFO L226 Difference]: Without dead ends: 23466 [2022-03-15 19:53:52,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 52 SyntacticMatches, 18 SemanticMatches, 320 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31226 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=8585, Invalid=94653, Unknown=124, NotChecked=0, Total=103362 [2022-03-15 19:53:52,853 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1352 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 3411 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1352 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 3411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-15 19:53:52,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1352 Valid, 0 Invalid, 3790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 3411 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-15 19:53:52,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23466 states. [2022-03-15 19:53:53,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23466 to 3798. [2022-03-15 19:53:53,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3798 states, 3797 states have (on average 3.2246510402949697) internal successors, (12244), 3797 states have internal predecessors, (12244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:53:53,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3798 states to 3798 states and 12244 transitions. [2022-03-15 19:53:53,013 INFO L78 Accepts]: Start accepts. Automaton has 3798 states and 12244 transitions. Word has length 39 [2022-03-15 19:53:53,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:53:53,013 INFO L470 AbstractCegarLoop]: Abstraction has 3798 states and 12244 transitions. [2022-03-15 19:53:53,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.5) internal successors, (85), 34 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:53:53,013 INFO L276 IsEmpty]: Start isEmpty. Operand 3798 states and 12244 transitions. [2022-03-15 19:53:53,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-15 19:53:53,016 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:53:53,017 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:53:53,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-03-15 19:53:53,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:53:53,231 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:53:53,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:53:53,232 INFO L85 PathProgramCache]: Analyzing trace with hash 719696024, now seen corresponding path program 66 times [2022-03-15 19:53:53,232 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:53:53,232 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820580542] [2022-03-15 19:53:53,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:53:53,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:53:53,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:53:53,836 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:53:53,836 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:53:53,836 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820580542] [2022-03-15 19:53:53,836 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820580542] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:53:53,836 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859291943] [2022-03-15 19:53:53,836 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 19:53:53,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:53:53,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:53:53,837 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) [2022-03-15 19:53:53,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-03-15 19:53:54,211 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-03-15 19:53:54,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:53:54,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 57 conjunts are in the unsatisfiable core [2022-03-15 19:53:54,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:53:55,452 INFO L353 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2022-03-15 19:53:55,452 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 26 treesize of output 10 [2022-03-15 19:53:55,461 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 39 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:53:55,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:53:55,815 INFO L353 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2022-03-15 19:53:55,815 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 27 treesize of output 19 [2022-03-15 19:53:57,782 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 40 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:53:57,782 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859291943] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:53:57,782 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:53:57,782 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 85 [2022-03-15 19:53:57,782 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [147731085] [2022-03-15 19:53:57,782 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:53:57,788 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:53:57,832 INFO L252 McrAutomatonBuilder]: Finished intersection with 92 states and 149 transitions. [2022-03-15 19:53:57,832 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:53:59,139 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [436021#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0)), 436023#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 12))) (<= ~size~0 3) (< ~front~0 0)), 436022#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (< ~front~0 0)), 436020#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0)), 436024#(or (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) 16 ~queue~0.offset)) 5) (<= ~size~0 4) (< ~front~0 0))] [2022-03-15 19:53:59,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-03-15 19:53:59,140 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:53:59,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-03-15 19:53:59,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1022, Invalid=7350, Unknown=0, NotChecked=0, Total=8372 [2022-03-15 19:53:59,140 INFO L87 Difference]: Start difference. First operand 3798 states and 12244 transitions. Second operand has 36 states, 35 states have (on average 2.5714285714285716) internal successors, (90), 35 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:54:14,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:54:14,203 INFO L93 Difference]: Finished difference Result 40513 states and 107477 transitions. [2022-03-15 19:54:14,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2022-03-15 19:54:14,204 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.5714285714285716) internal successors, (90), 35 states have internal predecessors, (90), 0 states have call successors, (0), 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 39 [2022-03-15 19:54:14,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:54:14,291 INFO L225 Difference]: With dead ends: 40513 [2022-03-15 19:54:14,291 INFO L226 Difference]: Without dead ends: 39044 [2022-03-15 19:54:14,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 50 SyntacticMatches, 17 SemanticMatches, 462 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80183 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=11797, Invalid=203035, Unknown=0, NotChecked=0, Total=214832 [2022-03-15 19:54:14,297 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2341 mSDsluCounter, 1704 mSDsCounter, 0 mSdLazyCounter, 3390 mSolverCounterSat, 533 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2341 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 533 IncrementalHoareTripleChecker+Valid, 3390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-15 19:54:14,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2341 Valid, 0 Invalid, 3923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [533 Valid, 3390 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-15 19:54:14,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39044 states. [2022-03-15 19:54:14,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39044 to 4420. [2022-03-15 19:54:14,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4420 states, 4419 states have (on average 3.329938900203666) internal successors, (14715), 4419 states have internal predecessors, (14715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:54:14,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4420 states to 4420 states and 14715 transitions. [2022-03-15 19:54:14,586 INFO L78 Accepts]: Start accepts. Automaton has 4420 states and 14715 transitions. Word has length 39 [2022-03-15 19:54:14,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:54:14,586 INFO L470 AbstractCegarLoop]: Abstraction has 4420 states and 14715 transitions. [2022-03-15 19:54:14,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.5714285714285716) internal successors, (90), 35 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:54:14,586 INFO L276 IsEmpty]: Start isEmpty. Operand 4420 states and 14715 transitions. [2022-03-15 19:54:14,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-15 19:54:14,591 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:54:14,591 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:54:14,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-03-15 19:54:14,811 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,SelfDestructingSolverStorable68 [2022-03-15 19:54:14,812 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:54:14,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:54:14,812 INFO L85 PathProgramCache]: Analyzing trace with hash 859916096, now seen corresponding path program 67 times [2022-03-15 19:54:14,813 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:54:14,813 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370793932] [2022-03-15 19:54:14,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:54:14,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:54:14,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:54:15,341 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:54:15,342 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:54:15,342 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370793932] [2022-03-15 19:54:15,342 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370793932] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:54:15,342 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744948369] [2022-03-15 19:54:15,342 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 19:54:15,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:54:15,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:54:15,343 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) [2022-03-15 19:54:15,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-03-15 19:54:15,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:54:15,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 76 conjunts are in the unsatisfiable core [2022-03-15 19:54:15,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:54:16,033 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 [2022-03-15 19:54:16,042 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:54:16,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:54:16,280 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 19:54:16,280 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 28 treesize of output 13 [2022-03-15 19:54:16,914 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-15 19:54:16,915 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744948369] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:54:16,915 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:54:16,915 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 16] total 62 [2022-03-15 19:54:16,915 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1173636085] [2022-03-15 19:54:16,915 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:54:16,921 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:54:16,966 INFO L252 McrAutomatonBuilder]: Finished intersection with 96 states and 158 transitions. [2022-03-15 19:54:16,966 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:54:18,165 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 6 new interpolants: [486419#(or (<= ~size~0 5) (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 20)) 5) (< ~front~0 0)), 486414#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0)), 486417#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 12))) (<= ~size~0 3) (< ~front~0 0)), 486415#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0)), 486416#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (< ~front~0 0)), 486418#(or (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) 16 ~queue~0.offset)) 5) (<= ~size~0 4) (< ~front~0 0))] [2022-03-15 19:54:18,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-15 19:54:18,165 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:54:18,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-15 19:54:18,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=4473, Unknown=0, NotChecked=0, Total=4830 [2022-03-15 19:54:18,166 INFO L87 Difference]: Start difference. First operand 4420 states and 14715 transitions. Second operand has 37 states, 36 states have (on average 2.638888888888889) internal successors, (95), 36 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:54:42,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:54:42,019 INFO L93 Difference]: Finished difference Result 64054 states and 170042 transitions. [2022-03-15 19:54:42,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 593 states. [2022-03-15 19:54:42,020 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.638888888888889) internal successors, (95), 36 states have internal predecessors, (95), 0 states have call successors, (0), 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 39 [2022-03-15 19:54:42,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:54:42,191 INFO L225 Difference]: With dead ends: 64054 [2022-03-15 19:54:42,191 INFO L226 Difference]: Without dead ends: 61297 [2022-03-15 19:54:42,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 742 GetRequests, 64 SyntacticMatches, 29 SemanticMatches, 649 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170557 ImplicationChecksByTransitivity, 23.6s TimeCoverageRelationStatistics Valid=24909, Invalid=398241, Unknown=0, NotChecked=0, Total=423150 [2022-03-15 19:54:42,205 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3987 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 2753 mSolverCounterSat, 658 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3987 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 658 IncrementalHoareTripleChecker+Valid, 2753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-15 19:54:42,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3987 Valid, 0 Invalid, 3411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [658 Valid, 2753 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-15 19:54:42,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61297 states. [2022-03-15 19:54:42,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61297 to 6438. [2022-03-15 19:54:42,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6438 states, 6437 states have (on average 3.3346279322665837) internal successors, (21465), 6437 states have internal predecessors, (21465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:54:42,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6438 states to 6438 states and 21465 transitions. [2022-03-15 19:54:42,854 INFO L78 Accepts]: Start accepts. Automaton has 6438 states and 21465 transitions. Word has length 39 [2022-03-15 19:54:42,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:54:42,854 INFO L470 AbstractCegarLoop]: Abstraction has 6438 states and 21465 transitions. [2022-03-15 19:54:42,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.638888888888889) internal successors, (95), 36 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:54:42,854 INFO L276 IsEmpty]: Start isEmpty. Operand 6438 states and 21465 transitions. [2022-03-15 19:54:42,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-15 19:54:42,862 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:54:42,862 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:54:42,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-03-15 19:54:43,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-03-15 19:54:43,075 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:54:43,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:54:43,075 INFO L85 PathProgramCache]: Analyzing trace with hash 911771032, now seen corresponding path program 68 times [2022-03-15 19:54:43,076 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:54:43,076 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080043289] [2022-03-15 19:54:43,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:54:43,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:54:43,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:54:43,885 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:54:43,885 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:54:43,885 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080043289] [2022-03-15 19:54:43,886 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080043289] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:54:43,886 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423134889] [2022-03-15 19:54:43,886 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 19:54:43,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:54:43,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:54:43,887 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) [2022-03-15 19:54:43,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-03-15 19:54:44,099 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 19:54:44,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:54:44,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 56 conjunts are in the unsatisfiable core [2022-03-15 19:54:44,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:54:44,628 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 [2022-03-15 19:54:44,635 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-03-15 19:54:44,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:54:44,846 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 19:54:44,846 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 28 treesize of output 13 [2022-03-15 19:54:45,160 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-15 19:54:45,160 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423134889] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:54:45,160 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:54:45,160 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 20, 17] total 63 [2022-03-15 19:54:45,160 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [268493221] [2022-03-15 19:54:45,160 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:54:45,166 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:54:45,214 INFO L252 McrAutomatonBuilder]: Finished intersection with 100 states and 167 transitions. [2022-03-15 19:54:45,215 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:54:46,443 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 7 new interpolants: [564805#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0)), 564807#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (< ~front~0 0)), 564809#(or (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) 16 ~queue~0.offset)) 5) (<= ~size~0 4) (< ~front~0 0)), 564811#(or (<= ~size~0 6) (< ~front~0 0) (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 24)) 5)), 564808#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 12))) (<= ~size~0 3) (< ~front~0 0)), 564810#(or (<= ~size~0 5) (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 20)) 5) (< ~front~0 0)), 564806#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0))] [2022-03-15 19:54:46,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-03-15 19:54:46,443 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:54:46,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-03-15 19:54:46,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=394, Invalid=4718, Unknown=0, NotChecked=0, Total=5112 [2022-03-15 19:54:46,444 INFO L87 Difference]: Start difference. First operand 6438 states and 21465 transitions. Second operand has 38 states, 37 states have (on average 2.7027027027027026) internal successors, (100), 37 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:55:00,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:55:00,913 INFO L93 Difference]: Finished difference Result 39261 states and 112339 transitions. [2022-03-15 19:55:00,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 331 states. [2022-03-15 19:55:00,913 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.7027027027027026) internal successors, (100), 37 states have internal predecessors, (100), 0 states have call successors, (0), 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 39 [2022-03-15 19:55:00,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:55:01,003 INFO L225 Difference]: With dead ends: 39261 [2022-03-15 19:55:01,003 INFO L226 Difference]: Without dead ends: 38089 [2022-03-15 19:55:01,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 77 SyntacticMatches, 18 SemanticMatches, 389 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53838 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=15347, Invalid=137143, Unknown=0, NotChecked=0, Total=152490 [2022-03-15 19:55:01,008 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1324 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 2040 mSolverCounterSat, 637 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1324 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 637 IncrementalHoareTripleChecker+Valid, 2040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:55:01,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1324 Valid, 0 Invalid, 2677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [637 Valid, 2040 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 19:55:01,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38089 states. [2022-03-15 19:55:01,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38089 to 6448. [2022-03-15 19:55:01,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6448 states, 6447 states have (on average 3.3333333333333335) internal successors, (21490), 6447 states have internal predecessors, (21490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:55:01,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6448 states to 6448 states and 21490 transitions. [2022-03-15 19:55:01,335 INFO L78 Accepts]: Start accepts. Automaton has 6448 states and 21490 transitions. Word has length 39 [2022-03-15 19:55:01,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:55:01,336 INFO L470 AbstractCegarLoop]: Abstraction has 6448 states and 21490 transitions. [2022-03-15 19:55:01,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.7027027027027026) internal successors, (100), 37 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:55:01,336 INFO L276 IsEmpty]: Start isEmpty. Operand 6448 states and 21490 transitions. [2022-03-15 19:55:01,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-15 19:55:01,341 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:55:01,342 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:55:01,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2022-03-15 19:55:01,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:55:01,548 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:55:01,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:55:01,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1775693248, now seen corresponding path program 69 times [2022-03-15 19:55:01,549 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:55:01,549 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657853187] [2022-03-15 19:55:01,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:55:01,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:55:01,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:55:02,113 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:55:02,113 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:55:02,113 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657853187] [2022-03-15 19:55:02,113 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657853187] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:55:02,113 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136621319] [2022-03-15 19:55:02,113 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 19:55:02,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:55:02,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:55:02,115 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) [2022-03-15 19:55:02,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-03-15 19:55:02,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-03-15 19:55:02,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:55:02,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 66 conjunts are in the unsatisfiable core [2022-03-15 19:55:02,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:55:03,074 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 [2022-03-15 19:55:03,134 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 [2022-03-15 19:55:03,183 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 [2022-03-15 19:55:04,183 INFO L353 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2022-03-15 19:55:04,184 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 26 treesize of output 10 [2022-03-15 19:55:04,190 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 57 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:55:04,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:55:29,791 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:55:29,792 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 63 treesize of output 51 [2022-03-15 19:55:29,802 INFO L353 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2022-03-15 19:55:29,802 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 324 treesize of output 297 [2022-03-15 19:55:29,812 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-03-15 19:55:29,812 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 286 treesize of output 256 [2022-03-15 19:55:29,823 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-03-15 19:55:29,823 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 256 treesize of output 196 [2022-03-15 19:55:30,612 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 52 proven. 79 refuted. 4 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:55:30,612 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136621319] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:55:30,612 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:55:30,612 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 30, 30] total 87 [2022-03-15 19:55:30,612 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [85055313] [2022-03-15 19:55:30,612 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:55:30,618 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:55:30,667 INFO L252 McrAutomatonBuilder]: Finished intersection with 104 states and 176 transitions. [2022-03-15 19:55:30,667 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:55:32,064 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 8 new interpolants: [617929#(or (<= ~size~0 5) (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 20)) 5) (< ~front~0 0)), 617930#(or (<= ~size~0 6) (< ~front~0 0) (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 24)) 5)), 617926#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (< ~front~0 0)), 617925#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0)), 617924#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0)), 617931#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 28))) (<= ~size~0 7) (< ~front~0 0)), 617928#(or (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) 16 ~queue~0.offset)) 5) (<= ~size~0 4) (< ~front~0 0)), 617927#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 12))) (<= ~size~0 3) (< ~front~0 0))] [2022-03-15 19:55:32,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-15 19:55:32,065 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:55:32,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-15 19:55:32,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1043, Invalid=8252, Unknown=17, NotChecked=0, Total=9312 [2022-03-15 19:55:32,066 INFO L87 Difference]: Start difference. First operand 6448 states and 21490 transitions. Second operand has 39 states, 38 states have (on average 2.763157894736842) internal successors, (105), 38 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:55:44,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:55:44,587 INFO L93 Difference]: Finished difference Result 23103 states and 65952 transitions. [2022-03-15 19:55:44,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 230 states. [2022-03-15 19:55:44,588 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 2.763157894736842) internal successors, (105), 38 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-03-15 19:55:44,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:55:44,629 INFO L225 Difference]: With dead ends: 23103 [2022-03-15 19:55:44,630 INFO L226 Difference]: Without dead ends: 22772 [2022-03-15 19:55:44,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 60 SyntacticMatches, 14 SemanticMatches, 313 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33996 ImplicationChecksByTransitivity, 38.7s TimeCoverageRelationStatistics Valid=10644, Invalid=88249, Unknown=17, NotChecked=0, Total=98910 [2022-03-15 19:55:44,638 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1551 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 1596 mSolverCounterSat, 715 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1551 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 715 IncrementalHoareTripleChecker+Valid, 1596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-15 19:55:44,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1551 Valid, 0 Invalid, 2311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [715 Valid, 1596 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-15 19:55:44,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22772 states. [2022-03-15 19:55:44,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22772 to 6452. [2022-03-15 19:55:44,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6452 states, 6451 states have (on average 3.3328166175786698) internal successors, (21500), 6451 states have internal predecessors, (21500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:55:44,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6452 states to 6452 states and 21500 transitions. [2022-03-15 19:55:44,840 INFO L78 Accepts]: Start accepts. Automaton has 6452 states and 21500 transitions. Word has length 39 [2022-03-15 19:55:44,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:55:44,840 INFO L470 AbstractCegarLoop]: Abstraction has 6452 states and 21500 transitions. [2022-03-15 19:55:44,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 2.763157894736842) internal successors, (105), 38 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:55:44,840 INFO L276 IsEmpty]: Start isEmpty. Operand 6452 states and 21500 transitions. [2022-03-15 19:55:44,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-15 19:55:44,846 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:55:44,846 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:55:44,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-03-15 19:55:45,059 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,SelfDestructingSolverStorable71 [2022-03-15 19:55:45,059 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:55:45,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:55:45,060 INFO L85 PathProgramCache]: Analyzing trace with hash 812259992, now seen corresponding path program 70 times [2022-03-15 19:55:45,060 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:55:45,061 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326673453] [2022-03-15 19:55:45,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:55:45,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:55:45,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:55:45,825 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:55:45,826 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:55:45,826 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326673453] [2022-03-15 19:55:45,826 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326673453] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:55:45,826 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050335512] [2022-03-15 19:55:45,826 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 19:55:45,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:55:45,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:55:45,827 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) [2022-03-15 19:55:45,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-03-15 19:55:46,038 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 19:55:46,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:55:46,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 52 conjunts are in the unsatisfiable core [2022-03-15 19:55:46,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:55:46,619 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 [2022-03-15 19:55:46,626 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-03-15 19:55:46,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:55:46,955 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 19:55:46,956 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 28 treesize of output 13 [2022-03-15 19:55:47,311 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-03-15 19:55:47,311 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050335512] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:55:47,312 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:55:47,312 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 20, 19] total 65 [2022-03-15 19:55:47,312 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1178890866] [2022-03-15 19:55:47,312 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:55:47,317 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:55:47,375 INFO L252 McrAutomatonBuilder]: Finished intersection with 110 states and 189 transitions. [2022-03-15 19:55:47,376 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:55:49,364 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 9 new interpolants: [654677#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 28))) (<= ~size~0 7) (< ~front~0 0)), 654675#(or (<= ~size~0 5) (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 20)) 5) (< ~front~0 0)), 654678#(or (<= ~size~0 8) (= (select (select |#memory_int| ~queue~0.base) (+ 32 (* ~front~0 4) ~queue~0.offset)) 5) (< ~front~0 0)), 654674#(or (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) 16 ~queue~0.offset)) 5) (<= ~size~0 4) (< ~front~0 0)), 654673#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 12))) (<= ~size~0 3) (< ~front~0 0)), 654670#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0)), 654671#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0)), 654672#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (< ~front~0 0)), 654676#(or (<= ~size~0 6) (< ~front~0 0) (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 24)) 5))] [2022-03-15 19:55:49,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-03-15 19:55:49,364 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:55:49,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-03-15 19:55:49,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=476, Invalid=5224, Unknown=0, NotChecked=0, Total=5700 [2022-03-15 19:55:49,365 INFO L87 Difference]: Start difference. First operand 6452 states and 21500 transitions. Second operand has 40 states, 39 states have (on average 2.871794871794872) internal successors, (112), 39 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:56:04,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:56:04,580 INFO L93 Difference]: Finished difference Result 31337 states and 92484 transitions. [2022-03-15 19:56:04,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 267 states. [2022-03-15 19:56:04,580 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.871794871794872) internal successors, (112), 39 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-03-15 19:56:04,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:56:04,650 INFO L225 Difference]: With dead ends: 31337 [2022-03-15 19:56:04,650 INFO L226 Difference]: Without dead ends: 30874 [2022-03-15 19:56:04,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 86 SyntacticMatches, 15 SemanticMatches, 330 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38281 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=14504, Invalid=95388, Unknown=0, NotChecked=0, Total=109892 [2022-03-15 19:56:04,656 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1741 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 2196 mSolverCounterSat, 778 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1741 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 778 IncrementalHoareTripleChecker+Valid, 2196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-15 19:56:04,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1741 Valid, 0 Invalid, 2974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [778 Valid, 2196 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-15 19:56:04,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30874 states. [2022-03-15 19:56:04,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30874 to 6564. [2022-03-15 19:56:04,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6564 states, 6563 states have (on average 3.317690080755752) internal successors, (21774), 6563 states have internal predecessors, (21774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:56:04,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6564 states to 6564 states and 21774 transitions. [2022-03-15 19:56:04,973 INFO L78 Accepts]: Start accepts. Automaton has 6564 states and 21774 transitions. Word has length 39 [2022-03-15 19:56:04,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:56:04,974 INFO L470 AbstractCegarLoop]: Abstraction has 6564 states and 21774 transitions. [2022-03-15 19:56:04,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.871794871794872) internal successors, (112), 39 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:56:04,974 INFO L276 IsEmpty]: Start isEmpty. Operand 6564 states and 21774 transitions. [2022-03-15 19:56:04,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-15 19:56:04,979 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:56:04,979 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:56:04,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-03-15 19:56:05,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:56:05,195 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:56:05,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:56:05,196 INFO L85 PathProgramCache]: Analyzing trace with hash 2035973020, now seen corresponding path program 71 times [2022-03-15 19:56:05,197 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:56:05,197 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272383303] [2022-03-15 19:56:05,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:56:05,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:56:05,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:56:05,882 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:56:05,882 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:56:05,882 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272383303] [2022-03-15 19:56:05,882 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272383303] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:56:05,882 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615402319] [2022-03-15 19:56:05,882 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 19:56:05,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:56:05,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:56:05,884 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) [2022-03-15 19:56:05,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-03-15 19:56:06,142 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-03-15 19:56:06,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:56:06,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 81 conjunts are in the unsatisfiable core [2022-03-15 19:56:06,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:56:06,568 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 13 treesize of output 9 [2022-03-15 19:56:06,620 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 [2022-03-15 19:56:07,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:56:07,092 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 19 treesize of output 21 [2022-03-15 19:56:07,495 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 [2022-03-15 19:56:07,502 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:56:07,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:56:07,852 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3550 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3550) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 32)))) is different from false [2022-03-15 19:56:08,436 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3550 (Array Int Int)) (v_ArrVal_3549 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_3549)) (.cse1 (* c_~front~0 4))) (or (= 5 (select (select (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3550) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ .cse1 32 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (not (= 5 (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* c_~size~0 4) .cse1 32 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))))))) is different from false [2022-03-15 19:56:08,441 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:56:08,441 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 62 treesize of output 50 [2022-03-15 19:56:08,444 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:56:08,445 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 112 treesize of output 112 [2022-03-15 19:56:08,447 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 63 treesize of output 49 [2022-03-15 19:56:08,451 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:56:08,451 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 56 treesize of output 60 [2022-03-15 19:56:08,559 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 36 trivial. 9 not checked. [2022-03-15 19:56:08,560 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615402319] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:56:08,560 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:56:08,560 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 22] total 80 [2022-03-15 19:56:08,560 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1257010674] [2022-03-15 19:56:08,560 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:56:08,565 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:56:08,647 INFO L252 McrAutomatonBuilder]: Finished intersection with 93 states and 155 transitions. [2022-03-15 19:56:08,647 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:56:10,499 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 9 new interpolants: [699971#(or (<= ~size~0 5) (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 20)) 5) (< ~front~0 0)), 699973#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 28))) (<= ~size~0 7) (< ~front~0 0)), 699967#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0)), 699970#(or (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) 16 ~queue~0.offset)) 5) (<= ~size~0 4) (< ~front~0 0)), 699972#(or (<= ~size~0 6) (< ~front~0 0) (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 24)) 5)), 699974#(or (<= ~size~0 8) (= (select (select |#memory_int| ~queue~0.base) (+ 32 (* ~front~0 4) ~queue~0.offset)) 5) (< ~front~0 0)), 699966#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0)), 699968#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (< ~front~0 0)), 699969#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 12))) (<= ~size~0 3) (< ~front~0 0))] [2022-03-15 19:56:10,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-15 19:56:10,499 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:56:10,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-15 19:56:10,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=585, Invalid=7253, Unknown=2, NotChecked=350, Total=8190 [2022-03-15 19:56:10,500 INFO L87 Difference]: Start difference. First operand 6564 states and 21774 transitions. Second operand has 41 states, 40 states have (on average 2.575) internal successors, (103), 40 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:56:14,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:56:14,918 INFO L93 Difference]: Finished difference Result 14619 states and 44163 transitions. [2022-03-15 19:56:14,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-03-15 19:56:14,918 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.575) internal successors, (103), 40 states have internal predecessors, (103), 0 states have call successors, (0), 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 39 [2022-03-15 19:56:14,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:56:14,947 INFO L225 Difference]: With dead ends: 14619 [2022-03-15 19:56:14,947 INFO L226 Difference]: Without dead ends: 14612 [2022-03-15 19:56:14,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2948 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=2795, Invalid=20467, Unknown=2, NotChecked=606, Total=23870 [2022-03-15 19:56:14,949 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 435 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 1834 mSolverCounterSat, 343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 1834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 19:56:14,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [435 Valid, 0 Invalid, 2177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 1834 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 19:56:14,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14612 states. [2022-03-15 19:56:15,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14612 to 6562. [2022-03-15 19:56:15,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6562 states, 6561 states have (on average 3.318091754305746) internal successors, (21770), 6561 states have internal predecessors, (21770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:56:15,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6562 states to 6562 states and 21770 transitions. [2022-03-15 19:56:15,178 INFO L78 Accepts]: Start accepts. Automaton has 6562 states and 21770 transitions. Word has length 39 [2022-03-15 19:56:15,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:56:15,178 INFO L470 AbstractCegarLoop]: Abstraction has 6562 states and 21770 transitions. [2022-03-15 19:56:15,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.575) internal successors, (103), 40 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:56:15,178 INFO L276 IsEmpty]: Start isEmpty. Operand 6562 states and 21770 transitions. [2022-03-15 19:56:15,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-03-15 19:56:15,182 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:56:15,182 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:56:15,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-03-15 19:56:15,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:56:15,395 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:56:15,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:56:15,396 INFO L85 PathProgramCache]: Analyzing trace with hash 913064844, now seen corresponding path program 72 times [2022-03-15 19:56:15,397 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:56:15,397 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555523683] [2022-03-15 19:56:15,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:56:15,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:56:15,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:56:15,484 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 64 proven. 36 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-03-15 19:56:15,484 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:56:15,484 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555523683] [2022-03-15 19:56:15,484 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555523683] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:56:15,484 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830341384] [2022-03-15 19:56:15,484 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 19:56:15,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:56:15,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:56:15,486 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) [2022-03-15 19:56:15,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-03-15 19:56:15,981 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-03-15 19:56:15,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:56:15,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 28 conjunts are in the unsatisfiable core [2022-03-15 19:56:15,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:56:16,391 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 64 proven. 45 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-03-15 19:56:16,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:56:16,768 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 55 proven. 54 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-03-15 19:56:16,769 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830341384] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:56:16,769 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:56:16,769 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 21, 21] total 52 [2022-03-15 19:56:16,769 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [303426758] [2022-03-15 19:56:16,769 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:56:16,775 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:56:16,832 INFO L252 McrAutomatonBuilder]: Finished intersection with 116 states and 201 transitions. [2022-03-15 19:56:16,832 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:56:17,363 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 19:56:17,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 19:56:17,363 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:56:17,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 19:56:17,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=629, Invalid=2127, Unknown=0, NotChecked=0, Total=2756 [2022-03-15 19:56:17,364 INFO L87 Difference]: Start difference. First operand 6562 states and 21770 transitions. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 12 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:56:17,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:56:17,477 INFO L93 Difference]: Finished difference Result 8830 states and 27690 transitions. [2022-03-15 19:56:17,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-15 19:56:17,477 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 12 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-03-15 19:56:17,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:56:17,494 INFO L225 Difference]: With dead ends: 8830 [2022-03-15 19:56:17,494 INFO L226 Difference]: Without dead ends: 8788 [2022-03-15 19:56:17,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=629, Invalid=2127, Unknown=0, NotChecked=0, Total=2756 [2022-03-15 19:56:17,494 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 113 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:56:17,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 0 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 19:56:17,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8788 states. [2022-03-15 19:56:17,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8788 to 7346. [2022-03-15 19:56:17,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7346 states, 7345 states have (on average 3.265214431586113) internal successors, (23983), 7345 states have internal predecessors, (23983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:56:17,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7346 states to 7346 states and 23983 transitions. [2022-03-15 19:56:17,654 INFO L78 Accepts]: Start accepts. Automaton has 7346 states and 23983 transitions. Word has length 40 [2022-03-15 19:56:17,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:56:17,654 INFO L470 AbstractCegarLoop]: Abstraction has 7346 states and 23983 transitions. [2022-03-15 19:56:17,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 12 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:56:17,655 INFO L276 IsEmpty]: Start isEmpty. Operand 7346 states and 23983 transitions. [2022-03-15 19:56:17,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-03-15 19:56:17,660 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:56:17,660 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:56:17,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-03-15 19:56:17,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:56:17,877 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:56:17,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:56:17,878 INFO L85 PathProgramCache]: Analyzing trace with hash 239516292, now seen corresponding path program 73 times [2022-03-15 19:56:17,879 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:56:17,879 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841855381] [2022-03-15 19:56:17,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:56:17,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:56:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:56:18,117 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 56 proven. 62 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-03-15 19:56:18,117 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:56:18,117 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841855381] [2022-03-15 19:56:18,117 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841855381] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:56:18,117 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561636868] [2022-03-15 19:56:18,118 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 19:56:18,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:56:18,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:56:18,119 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) [2022-03-15 19:56:18,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-03-15 19:56:18,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:56:18,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-15 19:56:18,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:56:18,831 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 73 proven. 45 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-03-15 19:56:18,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:56:19,380 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 64 proven. 54 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-03-15 19:56:19,380 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561636868] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:56:19,380 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:56:19,380 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 61 [2022-03-15 19:56:19,380 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1480288120] [2022-03-15 19:56:19,380 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:56:19,386 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:56:19,429 INFO L252 McrAutomatonBuilder]: Finished intersection with 81 states and 121 transitions. [2022-03-15 19:56:19,430 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:56:19,810 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [751957#(or (<= ~size~0 0) (<= ~n~0 ~front~0) (< ~front~0 0))] [2022-03-15 19:56:19,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-15 19:56:19,811 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:56:19,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-15 19:56:19,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2946, Unknown=0, NotChecked=0, Total=3906 [2022-03-15 19:56:19,811 INFO L87 Difference]: Start difference. First operand 7346 states and 23983 transitions. Second operand has 23 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 22 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:56:20,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:56:20,395 INFO L93 Difference]: Finished difference Result 10906 states and 31972 transitions. [2022-03-15 19:56:20,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 19:56:20,396 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 22 states have internal predecessors, (48), 0 states have call successors, (0), 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 41 [2022-03-15 19:56:20,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:56:20,411 INFO L225 Difference]: With dead ends: 10906 [2022-03-15 19:56:20,411 INFO L226 Difference]: Without dead ends: 7347 [2022-03-15 19:56:20,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1722 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1270, Invalid=4430, Unknown=0, NotChecked=0, Total=5700 [2022-03-15 19:56:20,412 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 60 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 19:56:20,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 0 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 19:56:20,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7347 states. [2022-03-15 19:56:20,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7347 to 7347. [2022-03-15 19:56:20,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7347 states, 7346 states have (on average 3.2649060713313367) internal successors, (23984), 7346 states have internal predecessors, (23984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:56:20,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7347 states to 7347 states and 23984 transitions. [2022-03-15 19:56:20,609 INFO L78 Accepts]: Start accepts. Automaton has 7347 states and 23984 transitions. Word has length 41 [2022-03-15 19:56:20,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:56:20,609 INFO L470 AbstractCegarLoop]: Abstraction has 7347 states and 23984 transitions. [2022-03-15 19:56:20,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 22 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:56:20,609 INFO L276 IsEmpty]: Start isEmpty. Operand 7347 states and 23984 transitions. [2022-03-15 19:56:20,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-03-15 19:56:20,614 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:56:20,614 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:56:20,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-03-15 19:56:20,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2022-03-15 19:56:20,832 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:56:20,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:56:20,833 INFO L85 PathProgramCache]: Analyzing trace with hash -633113620, now seen corresponding path program 74 times [2022-03-15 19:56:20,834 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:56:20,834 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434055341] [2022-03-15 19:56:20,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:56:20,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:56:20,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:56:21,304 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 28 proven. 137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:56:21,304 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:56:21,304 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434055341] [2022-03-15 19:56:21,304 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434055341] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:56:21,304 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149196414] [2022-03-15 19:56:21,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 19:56:21,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:56:21,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:56:21,305 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) [2022-03-15 19:56:21,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-03-15 19:56:21,531 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 19:56:21,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:56:21,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 77 conjunts are in the unsatisfiable core [2022-03-15 19:56:21,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:56:22,117 INFO L353 Elim1Store]: treesize reduction 12, result has 20.0 percent of original size [2022-03-15 19:56:22,117 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-03-15 19:56:22,122 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:56:22,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:56:22,157 INFO L353 Elim1Store]: treesize reduction 14, result has 26.3 percent of original size [2022-03-15 19:56:22,157 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 27 treesize of output 13 [2022-03-15 19:56:22,480 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 45 proven. 65 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-03-15 19:56:22,480 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149196414] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:56:22,480 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:56:22,480 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 30, 13] total 73 [2022-03-15 19:56:22,481 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [54816575] [2022-03-15 19:56:22,481 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:56:22,487 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:56:22,542 INFO L252 McrAutomatonBuilder]: Finished intersection with 82 states and 122 transitions. [2022-03-15 19:56:22,542 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:56:22,899 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [777905#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0))] [2022-03-15 19:56:22,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-15 19:56:22,899 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:56:22,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-15 19:56:22,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1112, Invalid=4588, Unknown=0, NotChecked=0, Total=5700 [2022-03-15 19:56:22,900 INFO L87 Difference]: Start difference. First operand 7347 states and 23984 transitions. Second operand has 35 states, 34 states have (on average 2.235294117647059) internal successors, (76), 34 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:56:24,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:56:24,724 INFO L93 Difference]: Finished difference Result 10683 states and 32123 transitions. [2022-03-15 19:56:24,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-03-15 19:56:24,725 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.235294117647059) internal successors, (76), 34 states have internal predecessors, (76), 0 states have call successors, (0), 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 42 [2022-03-15 19:56:24,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:56:24,745 INFO L225 Difference]: With dead ends: 10683 [2022-03-15 19:56:24,745 INFO L226 Difference]: Without dead ends: 10534 [2022-03-15 19:56:24,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3161 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3081, Invalid=13949, Unknown=0, NotChecked=0, Total=17030 [2022-03-15 19:56:24,747 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 342 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 19:56:24,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [342 Valid, 0 Invalid, 1677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 19:56:24,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10534 states. [2022-03-15 19:56:24,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10534 to 7533. [2022-03-15 19:56:24,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7533 states, 7532 states have (on average 3.2855815188528945) internal successors, (24747), 7532 states have internal predecessors, (24747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:56:24,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7533 states to 7533 states and 24747 transitions. [2022-03-15 19:56:24,898 INFO L78 Accepts]: Start accepts. Automaton has 7533 states and 24747 transitions. Word has length 42 [2022-03-15 19:56:24,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:56:24,898 INFO L470 AbstractCegarLoop]: Abstraction has 7533 states and 24747 transitions. [2022-03-15 19:56:24,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.235294117647059) internal successors, (76), 34 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:56:24,899 INFO L276 IsEmpty]: Start isEmpty. Operand 7533 states and 24747 transitions. [2022-03-15 19:56:24,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-03-15 19:56:24,904 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:56:24,904 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:56:24,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-03-15 19:56:25,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:56:25,112 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:56:25,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:56:25,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1376034452, now seen corresponding path program 75 times [2022-03-15 19:56:25,113 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:56:25,113 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226846795] [2022-03-15 19:56:25,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:56:25,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:56:25,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:56:25,619 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:56:25,619 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:56:25,619 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226846795] [2022-03-15 19:56:25,619 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226846795] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:56:25,619 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370740883] [2022-03-15 19:56:25,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 19:56:25,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:56:25,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:56:25,621 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) [2022-03-15 19:56:25,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-03-15 19:56:26,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-03-15 19:56:26,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:56:26,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 111 conjunts are in the unsatisfiable core [2022-03-15 19:56:26,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:56:26,684 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 16 treesize of output 12 [2022-03-15 19:56:26,724 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 [2022-03-15 19:56:26,759 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 [2022-03-15 19:56:27,510 INFO L353 Elim1Store]: treesize reduction 218, result has 1.4 percent of original size [2022-03-15 19:56:27,511 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 63 treesize of output 22 [2022-03-15 19:56:27,517 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 19 proven. 136 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-15 19:56:27,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:56:32,208 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:56:32,208 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 200 treesize of output 140 [2022-03-15 19:56:32,284 INFO L353 Elim1Store]: treesize reduction 203, result has 40.5 percent of original size [2022-03-15 19:56:32,285 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 1076 treesize of output 1077 [2022-03-15 19:56:32,346 INFO L353 Elim1Store]: treesize reduction 256, result has 24.9 percent of original size [2022-03-15 19:56:32,347 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 940 treesize of output 912 [2022-03-15 19:56:32,395 INFO L353 Elim1Store]: treesize reduction 256, result has 24.9 percent of original size [2022-03-15 19:56:32,396 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 828 treesize of output 688 [2022-03-15 19:56:34,202 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 7 proven. 148 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-15 19:56:34,202 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370740883] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:56:34,202 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:56:34,202 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 29, 29] total 88 [2022-03-15 19:56:34,202 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1007545522] [2022-03-15 19:56:34,202 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:56:34,209 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:56:34,257 INFO L252 McrAutomatonBuilder]: Finished intersection with 86 states and 131 transitions. [2022-03-15 19:56:34,258 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:56:35,149 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [804101#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0)), 804102#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0))] [2022-03-15 19:56:35,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-03-15 19:56:35,149 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:56:35,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-03-15 19:56:35,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=617, Invalid=7734, Unknown=21, NotChecked=0, Total=8372 [2022-03-15 19:56:35,150 INFO L87 Difference]: Start difference. First operand 7533 states and 24747 transitions. Second operand has 36 states, 35 states have (on average 2.3142857142857145) internal successors, (81), 35 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:56:39,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:56:39,396 INFO L93 Difference]: Finished difference Result 14859 states and 42464 transitions. [2022-03-15 19:56:39,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-03-15 19:56:39,396 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.3142857142857145) internal successors, (81), 35 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-03-15 19:56:39,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:56:39,426 INFO L225 Difference]: With dead ends: 14859 [2022-03-15 19:56:39,426 INFO L226 Difference]: Without dead ends: 14558 [2022-03-15 19:56:39,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 44 SyntacticMatches, 23 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7522 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=1831, Invalid=33304, Unknown=21, NotChecked=0, Total=35156 [2022-03-15 19:56:39,427 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 541 mSDsluCounter, 1962 mSDsCounter, 0 mSdLazyCounter, 3623 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 3623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:56:39,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [541 Valid, 0 Invalid, 3879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 3623 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 19:56:39,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14558 states. [2022-03-15 19:56:39,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14558 to 7525. [2022-03-15 19:56:39,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7525 states, 7524 states have (on average 3.2829611908559277) internal successors, (24701), 7524 states have internal predecessors, (24701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:56:39,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7525 states to 7525 states and 24701 transitions. [2022-03-15 19:56:39,602 INFO L78 Accepts]: Start accepts. Automaton has 7525 states and 24701 transitions. Word has length 42 [2022-03-15 19:56:39,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:56:39,602 INFO L470 AbstractCegarLoop]: Abstraction has 7525 states and 24701 transitions. [2022-03-15 19:56:39,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.3142857142857145) internal successors, (81), 35 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:56:39,603 INFO L276 IsEmpty]: Start isEmpty. Operand 7525 states and 24701 transitions. [2022-03-15 19:56:39,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-03-15 19:56:39,608 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:56:39,608 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:56:39,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-03-15 19:56:39,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:56:39,816 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:56:39,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:56:39,817 INFO L85 PathProgramCache]: Analyzing trace with hash -764884756, now seen corresponding path program 76 times [2022-03-15 19:56:39,817 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:56:39,818 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468168593] [2022-03-15 19:56:39,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:56:39,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:56:39,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:56:40,505 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:56:40,505 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:56:40,505 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468168593] [2022-03-15 19:56:40,505 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468168593] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:56:40,506 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128644691] [2022-03-15 19:56:40,506 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 19:56:40,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:56:40,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:56:40,507 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) [2022-03-15 19:56:40,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-03-15 19:56:40,741 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 19:56:40,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:56:40,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 70 conjunts are in the unsatisfiable core [2022-03-15 19:56:40,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:56:41,447 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 [2022-03-15 19:56:41,455 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-03-15 19:56:41,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:56:41,572 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 19:56:41,573 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 13 [2022-03-15 19:56:42,158 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 109 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-03-15 19:56:42,158 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128644691] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:56:42,159 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:56:42,159 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 22, 14] total 65 [2022-03-15 19:56:42,159 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1885172513] [2022-03-15 19:56:42,159 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:56:42,211 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:56:42,263 INFO L252 McrAutomatonBuilder]: Finished intersection with 90 states and 140 transitions. [2022-03-15 19:56:42,263 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:56:43,342 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [834519#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (< ~front~0 0)), 834517#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0)), 834518#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0))] [2022-03-15 19:56:43,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-15 19:56:43,342 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:56:43,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-15 19:56:43,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=4542, Unknown=0, NotChecked=0, Total=4830 [2022-03-15 19:56:43,343 INFO L87 Difference]: Start difference. First operand 7525 states and 24701 transitions. Second operand has 37 states, 36 states have (on average 2.388888888888889) internal successors, (86), 36 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:56:48,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:56:48,904 INFO L93 Difference]: Finished difference Result 22424 states and 62292 transitions. [2022-03-15 19:56:48,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2022-03-15 19:56:48,905 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.388888888888889) internal successors, (86), 36 states have internal predecessors, (86), 0 states have call successors, (0), 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 42 [2022-03-15 19:56:48,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:56:48,953 INFO L225 Difference]: With dead ends: 22424 [2022-03-15 19:56:48,953 INFO L226 Difference]: Without dead ends: 21871 [2022-03-15 19:56:48,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 63 SyntacticMatches, 30 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14252 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=3116, Invalid=50014, Unknown=0, NotChecked=0, Total=53130 [2022-03-15 19:56:48,955 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1097 mSDsluCounter, 1689 mSDsCounter, 0 mSdLazyCounter, 3272 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1097 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 3272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:56:48,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1097 Valid, 0 Invalid, 3658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 3272 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 19:56:48,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21871 states. [2022-03-15 19:56:49,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21871 to 7265. [2022-03-15 19:56:49,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7265 states, 7264 states have (on average 3.260875550660793) internal successors, (23687), 7264 states have internal predecessors, (23687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:56:49,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7265 states to 7265 states and 23687 transitions. [2022-03-15 19:56:49,183 INFO L78 Accepts]: Start accepts. Automaton has 7265 states and 23687 transitions. Word has length 42 [2022-03-15 19:56:49,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:56:49,183 INFO L470 AbstractCegarLoop]: Abstraction has 7265 states and 23687 transitions. [2022-03-15 19:56:49,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.388888888888889) internal successors, (86), 36 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:56:49,184 INFO L276 IsEmpty]: Start isEmpty. Operand 7265 states and 23687 transitions. [2022-03-15 19:56:49,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-03-15 19:56:49,189 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:56:49,189 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:56:49,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-03-15 19:56:49,406 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,SelfDestructingSolverStorable78 [2022-03-15 19:56:49,406 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:56:49,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:56:49,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1586096532, now seen corresponding path program 77 times [2022-03-15 19:56:49,407 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:56:49,407 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723267204] [2022-03-15 19:56:49,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:56:49,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:56:49,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:56:50,136 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:56:50,136 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:56:50,136 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723267204] [2022-03-15 19:56:50,136 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723267204] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:56:50,136 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904127216] [2022-03-15 19:56:50,136 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 19:56:50,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:56:50,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:56:50,137 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) [2022-03-15 19:56:50,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-03-15 19:56:50,485 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-03-15 19:56:50,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:56:50,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 99 conjunts are in the unsatisfiable core [2022-03-15 19:56:50,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:56:50,877 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 13 treesize of output 9 [2022-03-15 19:56:50,915 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 [2022-03-15 19:56:50,952 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 [2022-03-15 19:56:51,632 INFO L353 Elim1Store]: treesize reduction 12, result has 20.0 percent of original size [2022-03-15 19:56:51,632 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 22 treesize of output 10 [2022-03-15 19:56:51,638 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:56:51,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:56:52,758 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:56:52,759 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 65 treesize of output 53 [2022-03-15 19:56:52,763 INFO L353 Elim1Store]: treesize reduction 16, result has 23.8 percent of original size [2022-03-15 19:56:52,764 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 160 treesize of output 144 [2022-03-15 19:56:52,768 INFO L353 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-03-15 19:56:52,768 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 139 treesize of output 105 [2022-03-15 19:56:52,771 INFO L353 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-03-15 19:56:52,772 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 84 treesize of output 67 [2022-03-15 19:56:52,854 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 110 refuted. 10 times theorem prover too weak. 45 trivial. 0 not checked. [2022-03-15 19:56:52,854 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904127216] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:56:52,854 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:56:52,854 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 33, 24] total 87 [2022-03-15 19:56:52,854 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [626900638] [2022-03-15 19:56:52,854 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:56:52,861 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:56:52,913 INFO L252 McrAutomatonBuilder]: Finished intersection with 94 states and 149 transitions. [2022-03-15 19:56:52,913 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:56:54,006 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [872131#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0)), 872133#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (< ~front~0 0)), 872132#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0)), 872134#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 12))) (<= ~size~0 3) (< ~front~0 0))] [2022-03-15 19:56:54,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-03-15 19:56:54,006 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:56:54,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-03-15 19:56:54,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=540, Invalid=8007, Unknown=9, NotChecked=0, Total=8556 [2022-03-15 19:56:54,007 INFO L87 Difference]: Start difference. First operand 7265 states and 23687 transitions. Second operand has 38 states, 37 states have (on average 2.4594594594594597) internal successors, (91), 37 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:57:07,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:57:07,898 INFO L93 Difference]: Finished difference Result 35434 states and 96336 transitions. [2022-03-15 19:57:07,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 281 states. [2022-03-15 19:57:07,899 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.4594594594594597) internal successors, (91), 37 states have internal predecessors, (91), 0 states have call successors, (0), 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 42 [2022-03-15 19:57:07,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:57:07,978 INFO L225 Difference]: With dead ends: 35434 [2022-03-15 19:57:07,978 INFO L226 Difference]: Without dead ends: 34465 [2022-03-15 19:57:07,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 53 SyntacticMatches, 21 SemanticMatches, 359 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37784 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=7356, Invalid=122595, Unknown=9, NotChecked=0, Total=129960 [2022-03-15 19:57:07,982 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1709 mSDsluCounter, 2123 mSDsCounter, 0 mSdLazyCounter, 4103 mSolverCounterSat, 501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1709 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 501 IncrementalHoareTripleChecker+Valid, 4103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-15 19:57:07,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1709 Valid, 0 Invalid, 4604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [501 Valid, 4103 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-15 19:57:08,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34465 states. [2022-03-15 19:57:08,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34465 to 6555. [2022-03-15 19:57:08,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6555 states, 6554 states have (on average 3.18919743667989) internal successors, (20902), 6554 states have internal predecessors, (20902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:57:08,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6555 states to 6555 states and 20902 transitions. [2022-03-15 19:57:08,293 INFO L78 Accepts]: Start accepts. Automaton has 6555 states and 20902 transitions. Word has length 42 [2022-03-15 19:57:08,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:57:08,293 INFO L470 AbstractCegarLoop]: Abstraction has 6555 states and 20902 transitions. [2022-03-15 19:57:08,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.4594594594594597) internal successors, (91), 37 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:57:08,293 INFO L276 IsEmpty]: Start isEmpty. Operand 6555 states and 20902 transitions. [2022-03-15 19:57:08,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-03-15 19:57:08,297 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:57:08,298 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:57:08,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-03-15 19:57:08,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2022-03-15 19:57:08,516 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:57:08,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:57:08,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1452072428, now seen corresponding path program 78 times [2022-03-15 19:57:08,518 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:57:08,518 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731259071] [2022-03-15 19:57:08,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:57:08,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:57:08,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:57:09,186 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:57:09,186 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:57:09,186 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731259071] [2022-03-15 19:57:09,186 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731259071] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:57:09,186 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429073363] [2022-03-15 19:57:09,186 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 19:57:09,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:57:09,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:57:09,187 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) [2022-03-15 19:57:09,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-03-15 19:57:09,708 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-03-15 19:57:09,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:57:09,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 67 conjunts are in the unsatisfiable core [2022-03-15 19:57:09,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:57:10,616 INFO L353 Elim1Store]: treesize reduction 12, result has 20.0 percent of original size [2022-03-15 19:57:10,616 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 22 treesize of output 10 [2022-03-15 19:57:10,622 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-03-15 19:57:10,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:57:10,895 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 19:57:10,896 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 28 treesize of output 13 [2022-03-15 19:57:11,909 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 19 proven. 110 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-03-15 19:57:11,909 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429073363] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:57:11,909 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:57:11,909 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 23, 23] total 76 [2022-03-15 19:57:11,909 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [522792426] [2022-03-15 19:57:11,909 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:57:11,916 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:57:11,970 INFO L252 McrAutomatonBuilder]: Finished intersection with 98 states and 158 transitions. [2022-03-15 19:57:11,971 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:57:13,088 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [921542#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 12))) (<= ~size~0 3) (< ~front~0 0)), 921539#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0)), 921543#(or (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) 16 ~queue~0.offset)) 5) (<= ~size~0 4) (< ~front~0 0)), 921541#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (< ~front~0 0)), 921540#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0))] [2022-03-15 19:57:13,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-15 19:57:13,088 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:57:13,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-15 19:57:13,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=664, Invalid=6142, Unknown=0, NotChecked=0, Total=6806 [2022-03-15 19:57:13,089 INFO L87 Difference]: Start difference. First operand 6555 states and 20902 transitions. Second operand has 39 states, 38 states have (on average 2.526315789473684) internal successors, (96), 38 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:57:32,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:57:32,798 INFO L93 Difference]: Finished difference Result 57041 states and 153032 transitions. [2022-03-15 19:57:32,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 455 states. [2022-03-15 19:57:32,798 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 2.526315789473684) internal successors, (96), 38 states have internal predecessors, (96), 0 states have call successors, (0), 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 42 [2022-03-15 19:57:32,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:57:32,951 INFO L225 Difference]: With dead ends: 57041 [2022-03-15 19:57:32,951 INFO L226 Difference]: Without dead ends: 55428 [2022-03-15 19:57:32,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 611 GetRequests, 68 SyntacticMatches, 20 SemanticMatches, 523 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103030 ImplicationChecksByTransitivity, 19.7s TimeCoverageRelationStatistics Valid=14693, Invalid=260407, Unknown=0, NotChecked=0, Total=275100 [2022-03-15 19:57:32,962 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3118 mSDsluCounter, 2420 mSDsCounter, 0 mSdLazyCounter, 4694 mSolverCounterSat, 654 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3118 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 654 IncrementalHoareTripleChecker+Valid, 4694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-15 19:57:32,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3118 Valid, 0 Invalid, 5348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [654 Valid, 4694 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-03-15 19:57:33,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55428 states. [2022-03-15 19:57:33,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55428 to 6627. [2022-03-15 19:57:33,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6627 states, 6626 states have (on average 3.1968004829459704) internal successors, (21182), 6626 states have internal predecessors, (21182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:57:33,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6627 states to 6627 states and 21182 transitions. [2022-03-15 19:57:33,629 INFO L78 Accepts]: Start accepts. Automaton has 6627 states and 21182 transitions. Word has length 42 [2022-03-15 19:57:33,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:57:33,629 INFO L470 AbstractCegarLoop]: Abstraction has 6627 states and 21182 transitions. [2022-03-15 19:57:33,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 2.526315789473684) internal successors, (96), 38 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:57:33,629 INFO L276 IsEmpty]: Start isEmpty. Operand 6627 states and 21182 transitions. [2022-03-15 19:57:33,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-03-15 19:57:33,634 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:57:33,634 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:57:33,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-03-15 19:57:33,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:57:33,839 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:57:33,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:57:33,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1592292500, now seen corresponding path program 79 times [2022-03-15 19:57:33,841 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:57:33,841 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796096899] [2022-03-15 19:57:33,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:57:33,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:57:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:57:34,485 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:57:34,485 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:57:34,485 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796096899] [2022-03-15 19:57:34,485 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796096899] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:57:34,485 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045710960] [2022-03-15 19:57:34,485 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 19:57:34,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:57:34,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:57:34,486 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) [2022-03-15 19:57:34,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-03-15 19:57:34,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:57:34,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 84 conjunts are in the unsatisfiable core [2022-03-15 19:57:34,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:57:35,717 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 [2022-03-15 19:57:35,726 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:57:35,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:57:36,009 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 19:57:36,010 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 28 treesize of output 13 [2022-03-15 19:57:36,759 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 109 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-03-15 19:57:36,759 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045710960] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:57:36,759 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:57:36,759 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 30, 17] total 77 [2022-03-15 19:57:36,759 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1878956661] [2022-03-15 19:57:36,759 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:57:36,766 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:57:36,862 INFO L252 McrAutomatonBuilder]: Finished intersection with 102 states and 167 transitions. [2022-03-15 19:57:36,863 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:57:38,037 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 6 new interpolants: [993048#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0)), 993053#(or (<= ~size~0 5) (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 20)) 5) (< ~front~0 0)), 993050#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (< ~front~0 0)), 993052#(or (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) 16 ~queue~0.offset)) 5) (<= ~size~0 4) (< ~front~0 0)), 993049#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0)), 993051#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 12))) (<= ~size~0 3) (< ~front~0 0))] [2022-03-15 19:57:38,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-03-15 19:57:38,037 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:57:38,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-03-15 19:57:38,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=6657, Unknown=0, NotChecked=0, Total=7140 [2022-03-15 19:57:38,038 INFO L87 Difference]: Start difference. First operand 6627 states and 21182 transitions. Second operand has 40 states, 39 states have (on average 2.58974358974359) internal successors, (101), 39 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:58:13,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:58:13,224 INFO L93 Difference]: Finished difference Result 90077 states and 237947 transitions. [2022-03-15 19:58:13,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 729 states. [2022-03-15 19:58:13,224 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.58974358974359) internal successors, (101), 39 states have internal predecessors, (101), 0 states have call successors, (0), 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 42 [2022-03-15 19:58:13,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:58:13,483 INFO L225 Difference]: With dead ends: 90077 [2022-03-15 19:58:13,483 INFO L226 Difference]: Without dead ends: 87208 [2022-03-15 19:58:13,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 889 GetRequests, 57 SyntacticMatches, 33 SemanticMatches, 799 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258930 ImplicationChecksByTransitivity, 34.7s TimeCoverageRelationStatistics Valid=32095, Invalid=608705, Unknown=0, NotChecked=0, Total=640800 [2022-03-15 19:58:13,507 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4627 mSDsluCounter, 1947 mSDsCounter, 0 mSdLazyCounter, 3932 mSolverCounterSat, 758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4627 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 758 IncrementalHoareTripleChecker+Valid, 3932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-15 19:58:13,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4627 Valid, 0 Invalid, 4690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [758 Valid, 3932 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-03-15 19:58:13,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87208 states. [2022-03-15 19:58:14,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87208 to 6825. [2022-03-15 19:58:14,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6825 states, 6824 states have (on average 3.219079718640094) internal successors, (21967), 6824 states have internal predecessors, (21967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:58:14,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6825 states to 6825 states and 21967 transitions. [2022-03-15 19:58:14,657 INFO L78 Accepts]: Start accepts. Automaton has 6825 states and 21967 transitions. Word has length 42 [2022-03-15 19:58:14,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:58:14,657 INFO L470 AbstractCegarLoop]: Abstraction has 6825 states and 21967 transitions. [2022-03-15 19:58:14,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.58974358974359) internal successors, (101), 39 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:58:14,657 INFO L276 IsEmpty]: Start isEmpty. Operand 6825 states and 21967 transitions. [2022-03-15 19:58:14,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-03-15 19:58:14,663 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:58:14,663 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:58:14,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-03-15 19:58:14,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:58:14,882 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:58:14,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:58:14,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1644147436, now seen corresponding path program 80 times [2022-03-15 19:58:14,883 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:58:14,883 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116948833] [2022-03-15 19:58:14,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:58:14,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:58:14,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:58:15,585 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:58:15,585 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:58:15,585 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116948833] [2022-03-15 19:58:15,585 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116948833] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:58:15,585 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362525403] [2022-03-15 19:58:15,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 19:58:15,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:58:15,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:58:15,587 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) [2022-03-15 19:58:15,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-03-15 19:58:15,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 19:58:15,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:58:15,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 62 conjunts are in the unsatisfiable core [2022-03-15 19:58:15,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:58:16,640 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 [2022-03-15 19:58:16,647 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-03-15 19:58:16,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:58:16,921 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 19:58:16,921 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 28 treesize of output 13 [2022-03-15 19:58:17,422 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 109 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-03-15 19:58:17,422 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362525403] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:58:17,422 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:58:17,422 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 22, 18] total 69 [2022-03-15 19:58:17,422 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [233457278] [2022-03-15 19:58:17,422 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:58:17,429 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:58:17,489 INFO L252 McrAutomatonBuilder]: Finished intersection with 106 states and 176 transitions. [2022-03-15 19:58:17,489 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:58:19,137 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 7 new interpolants: [1098535#(or (<= ~size~0 5) (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 20)) 5) (< ~front~0 0)), 1098532#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (< ~front~0 0)), 1098533#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 12))) (<= ~size~0 3) (< ~front~0 0)), 1098531#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0)), 1098530#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0)), 1098536#(or (<= ~size~0 6) (< ~front~0 0) (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 24)) 5)), 1098534#(or (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) 16 ~queue~0.offset)) 5) (<= ~size~0 4) (< ~front~0 0))] [2022-03-15 19:58:19,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-15 19:58:19,138 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:58:19,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-15 19:58:19,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=420, Invalid=5586, Unknown=0, NotChecked=0, Total=6006 [2022-03-15 19:58:19,138 INFO L87 Difference]: Start difference. First operand 6825 states and 21967 transitions. Second operand has 41 states, 40 states have (on average 2.65) internal successors, (106), 40 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:59:20,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:59:20,510 INFO L93 Difference]: Finished difference Result 134596 states and 353218 transitions. [2022-03-15 19:59:20,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1162 states. [2022-03-15 19:59:20,511 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.65) internal successors, (106), 40 states have internal predecessors, (106), 0 states have call successors, (0), 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 42 [2022-03-15 19:59:20,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:59:21,049 INFO L225 Difference]: With dead ends: 134596 [2022-03-15 19:59:21,050 INFO L226 Difference]: Without dead ends: 130019 [2022-03-15 19:59:21,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1321 GetRequests, 79 SyntacticMatches, 22 SemanticMatches, 1220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 659904 ImplicationChecksByTransitivity, 59.0s TimeCoverageRelationStatistics Valid=74623, Invalid=1417439, Unknown=0, NotChecked=0, Total=1492062 [2022-03-15 19:59:21,114 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6267 mSDsluCounter, 1672 mSDsCounter, 0 mSdLazyCounter, 3520 mSolverCounterSat, 761 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6267 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 761 IncrementalHoareTripleChecker+Valid, 3520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-03-15 19:59:21,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6267 Valid, 0 Invalid, 4281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [761 Valid, 3520 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-03-15 19:59:21,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130019 states. [2022-03-15 19:59:22,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130019 to 10383. [2022-03-15 19:59:22,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10383 states, 10382 states have (on average 3.2299171643228664) internal successors, (33533), 10382 states have internal predecessors, (33533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:59:22,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10383 states to 10383 states and 33533 transitions. [2022-03-15 19:59:22,573 INFO L78 Accepts]: Start accepts. Automaton has 10383 states and 33533 transitions. Word has length 42 [2022-03-15 19:59:22,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:59:22,573 INFO L470 AbstractCegarLoop]: Abstraction has 10383 states and 33533 transitions. [2022-03-15 19:59:22,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.65) internal successors, (106), 40 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:59:22,573 INFO L276 IsEmpty]: Start isEmpty. Operand 10383 states and 33533 transitions. [2022-03-15 19:59:22,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-03-15 19:59:22,581 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:59:22,581 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:59:22,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-03-15 19:59:22,786 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,SelfDestructingSolverStorable82 [2022-03-15 19:59:22,787 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:59:22,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:59:22,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1043316844, now seen corresponding path program 81 times [2022-03-15 19:59:22,788 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:59:22,788 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664011012] [2022-03-15 19:59:22,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:59:22,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:59:22,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:59:23,478 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:59:23,479 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:59:23,479 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664011012] [2022-03-15 19:59:23,479 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664011012] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:59:23,479 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037824333] [2022-03-15 19:59:23,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 19:59:23,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:59:23,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:59:23,497 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) [2022-03-15 19:59:23,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-03-15 19:59:24,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-03-15 19:59:24,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:59:24,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 58 conjunts are in the unsatisfiable core [2022-03-15 19:59:24,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:59:25,716 INFO L353 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2022-03-15 19:59:25,717 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 26 treesize of output 10 [2022-03-15 19:59:25,728 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 65 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:59:25,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:59:26,300 INFO L353 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2022-03-15 19:59:26,300 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 27 treesize of output 19 [2022-03-15 19:59:28,104 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 58 proven. 107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:59:28,104 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037824333] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:59:28,104 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:59:28,104 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 94 [2022-03-15 19:59:28,104 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [341198462] [2022-03-15 19:59:28,104 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:59:28,111 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:59:28,170 INFO L252 McrAutomatonBuilder]: Finished intersection with 110 states and 185 transitions. [2022-03-15 19:59:28,170 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:59:29,663 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 8 new interpolants: [1256531#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (< ~front~0 0)), 1256534#(or (<= ~size~0 5) (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 20)) 5) (< ~front~0 0)), 1256536#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 28))) (<= ~size~0 7) (< ~front~0 0)), 1256530#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0)), 1256535#(or (<= ~size~0 6) (< ~front~0 0) (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 24)) 5)), 1256532#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 12))) (<= ~size~0 3) (< ~front~0 0)), 1256533#(or (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) 16 ~queue~0.offset)) 5) (<= ~size~0 4) (< ~front~0 0)), 1256529#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0))] [2022-03-15 19:59:29,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-15 19:59:29,664 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:59:29,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-15 19:59:29,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1237, Invalid=9475, Unknown=0, NotChecked=0, Total=10712 [2022-03-15 19:59:29,665 INFO L87 Difference]: Start difference. First operand 10383 states and 33533 transitions. Second operand has 42 states, 41 states have (on average 2.707317073170732) internal successors, (111), 41 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:59:54,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:59:54,941 INFO L93 Difference]: Finished difference Result 71441 states and 203403 transitions. [2022-03-15 19:59:54,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 453 states. [2022-03-15 19:59:54,941 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.707317073170732) internal successors, (111), 41 states have internal predecessors, (111), 0 states have call successors, (0), 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 42 [2022-03-15 19:59:54,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:59:55,250 INFO L225 Difference]: With dead ends: 71441 [2022-03-15 19:59:55,250 INFO L226 Difference]: Without dead ends: 69783 [2022-03-15 19:59:55,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 621 GetRequests, 62 SyntacticMatches, 17 SemanticMatches, 542 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115615 ImplicationChecksByTransitivity, 27.0s TimeCoverageRelationStatistics Valid=25796, Invalid=269596, Unknown=0, NotChecked=0, Total=295392 [2022-03-15 19:59:55,260 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1847 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 2943 mSolverCounterSat, 899 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1847 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 899 IncrementalHoareTripleChecker+Valid, 2943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-15 19:59:55,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1847 Valid, 0 Invalid, 3842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [899 Valid, 2943 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-15 19:59:55,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69783 states. [2022-03-15 19:59:55,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69783 to 10393. [2022-03-15 19:59:55,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10393 states, 10392 states have (on average 3.229214780600462) internal successors, (33558), 10392 states have internal predecessors, (33558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:59:55,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10393 states to 10393 states and 33558 transitions. [2022-03-15 19:59:55,790 INFO L78 Accepts]: Start accepts. Automaton has 10393 states and 33558 transitions. Word has length 42 [2022-03-15 19:59:55,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:59:55,790 INFO L470 AbstractCegarLoop]: Abstraction has 10393 states and 33558 transitions. [2022-03-15 19:59:55,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.707317073170732) internal successors, (111), 41 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:59:55,790 INFO L276 IsEmpty]: Start isEmpty. Operand 10393 states and 33558 transitions. [2022-03-15 19:59:55,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-03-15 19:59:55,796 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:59:55,796 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:59:55,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2022-03-15 19:59:56,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:59:56,011 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:59:56,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:59:56,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1544636396, now seen corresponding path program 82 times [2022-03-15 19:59:56,017 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:59:56,017 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359838561] [2022-03-15 19:59:56,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:59:56,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:59:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:59:56,627 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:59:56,627 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:59:56,627 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359838561] [2022-03-15 19:59:56,627 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359838561] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:59:56,627 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191102950] [2022-03-15 19:59:56,627 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 19:59:56,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:59:56,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:59:56,628 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) [2022-03-15 19:59:56,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-03-15 19:59:56,848 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 19:59:56,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:59:56,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 58 conjunts are in the unsatisfiable core [2022-03-15 19:59:56,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:59:57,471 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 [2022-03-15 19:59:57,479 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-03-15 19:59:57,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:59:57,875 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 19:59:57,875 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 28 treesize of output 13 [2022-03-15 19:59:58,556 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 109 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-03-15 19:59:58,556 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191102950] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:59:58,556 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:59:58,557 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 22, 20] total 71 [2022-03-15 19:59:58,557 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [265257092] [2022-03-15 19:59:58,557 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:59:58,563 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:59:58,751 INFO L252 McrAutomatonBuilder]: Finished intersection with 114 states and 194 transitions. [2022-03-15 19:59:58,751 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:00:00,891 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 9 new interpolants: [1349968#(or (<= ~size~0 5) (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 20)) 5) (< ~front~0 0)), 1349971#(or (<= ~size~0 8) (= (select (select |#memory_int| ~queue~0.base) (+ 32 (* ~front~0 4) ~queue~0.offset)) 5) (< ~front~0 0)), 1349965#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (< ~front~0 0)), 1349969#(or (<= ~size~0 6) (< ~front~0 0) (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 24)) 5)), 1349970#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 28))) (<= ~size~0 7) (< ~front~0 0)), 1349966#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 12))) (<= ~size~0 3) (< ~front~0 0)), 1349967#(or (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) 16 ~queue~0.offset)) 5) (<= ~size~0 4) (< ~front~0 0)), 1349963#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0)), 1349964#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0))] [2022-03-15 20:00:00,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-15 20:00:00,891 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:00:00,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-15 20:00:00,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=6137, Unknown=0, NotChecked=0, Total=6642 [2022-03-15 20:00:00,892 INFO L87 Difference]: Start difference. First operand 10393 states and 33558 transitions. Second operand has 43 states, 42 states have (on average 2.761904761904762) internal successors, (116), 42 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:00:21,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:00:21,394 INFO L93 Difference]: Finished difference Result 43659 states and 121566 transitions. [2022-03-15 20:00:21,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 340 states. [2022-03-15 20:00:21,395 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 2.761904761904762) internal successors, (116), 42 states have internal predecessors, (116), 0 states have call successors, (0), 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 42 [2022-03-15 20:00:21,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:00:21,494 INFO L225 Difference]: With dead ends: 43659 [2022-03-15 20:00:21,494 INFO L226 Difference]: Without dead ends: 43432 [2022-03-15 20:00:21,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 87 SyntacticMatches, 18 SemanticMatches, 400 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58868 ImplicationChecksByTransitivity, 21.3s TimeCoverageRelationStatistics Valid=20410, Invalid=140792, Unknown=0, NotChecked=0, Total=161202 [2022-03-15 20:00:21,501 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2023 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 2042 mSolverCounterSat, 904 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2023 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 904 IncrementalHoareTripleChecker+Valid, 2042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-15 20:00:21,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2023 Valid, 0 Invalid, 2946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [904 Valid, 2042 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-15 20:00:21,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43432 states. [2022-03-15 20:00:21,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43432 to 10393. [2022-03-15 20:00:21,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10393 states, 10392 states have (on average 3.229214780600462) internal successors, (33558), 10392 states have internal predecessors, (33558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:00:21,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10393 states to 10393 states and 33558 transitions. [2022-03-15 20:00:21,947 INFO L78 Accepts]: Start accepts. Automaton has 10393 states and 33558 transitions. Word has length 42 [2022-03-15 20:00:21,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:00:21,948 INFO L470 AbstractCegarLoop]: Abstraction has 10393 states and 33558 transitions. [2022-03-15 20:00:21,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 2.761904761904762) internal successors, (116), 42 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:00:21,949 INFO L276 IsEmpty]: Start isEmpty. Operand 10393 states and 33558 transitions. [2022-03-15 20:00:21,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-03-15 20:00:21,954 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:00:21,954 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:00:21,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2022-03-15 20:00:22,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 20:00:22,167 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 20:00:22,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:00:22,168 INFO L85 PathProgramCache]: Analyzing trace with hash 166808212, now seen corresponding path program 83 times [2022-03-15 20:00:22,169 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:00:22,169 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551087954] [2022-03-15 20:00:22,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:00:22,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:00:22,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:00:22,855 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:00:22,856 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:00:22,856 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551087954] [2022-03-15 20:00:22,856 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551087954] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 20:00:22,856 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382308865] [2022-03-15 20:00:22,856 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 20:00:22,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 20:00:22,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 20:00:22,857 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) [2022-03-15 20:00:22,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-03-15 20:00:23,155 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-03-15 20:00:23,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 20:00:23,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 87 conjunts are in the unsatisfiable core [2022-03-15 20:00:23,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 20:00:23,709 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 13 treesize of output 9 [2022-03-15 20:00:23,760 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 [2022-03-15 20:00:23,814 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 [2022-03-15 20:00:24,807 INFO L353 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2022-03-15 20:00:24,808 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 21 treesize of output 10 [2022-03-15 20:00:24,817 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:00:24,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 20:00:26,287 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 20:00:26,287 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 65 treesize of output 53 [2022-03-15 20:00:26,293 INFO L353 Elim1Store]: treesize reduction 16, result has 23.8 percent of original size [2022-03-15 20:00:26,293 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 340 treesize of output 303 [2022-03-15 20:00:26,299 INFO L353 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-03-15 20:00:26,299 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 298 treesize of output 230 [2022-03-15 20:00:26,304 INFO L353 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-03-15 20:00:26,304 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 184 treesize of output 150 [2022-03-15 20:00:26,452 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 110 refuted. 10 times theorem prover too weak. 45 trivial. 0 not checked. [2022-03-15 20:00:26,452 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382308865] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 20:00:26,452 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 20:00:26,452 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 33, 24] total 87 [2022-03-15 20:00:26,452 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1773960900] [2022-03-15 20:00:26,452 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:00:26,459 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:00:26,526 INFO L252 McrAutomatonBuilder]: Finished intersection with 120 states and 207 transitions. [2022-03-15 20:00:26,527 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:00:28,692 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 10 new interpolants: [1415401#(or (<= ~size~0 9) (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 36)) 5) (< ~front~0 0)), 1415399#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 28))) (<= ~size~0 7) (< ~front~0 0)), 1415392#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0)), 1415393#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0)), 1415400#(or (<= ~size~0 8) (= (select (select |#memory_int| ~queue~0.base) (+ 32 (* ~front~0 4) ~queue~0.offset)) 5) (< ~front~0 0)), 1415395#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 12))) (<= ~size~0 3) (< ~front~0 0)), 1415398#(or (<= ~size~0 6) (< ~front~0 0) (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 24)) 5)), 1415397#(or (<= ~size~0 5) (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 20)) 5) (< ~front~0 0)), 1415396#(or (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) 16 ~queue~0.offset)) 5) (<= ~size~0 4) (< ~front~0 0)), 1415394#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (< ~front~0 0))] [2022-03-15 20:00:28,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-03-15 20:00:28,693 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:00:28,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-03-15 20:00:28,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=800, Invalid=8887, Unknown=15, NotChecked=0, Total=9702 [2022-03-15 20:00:28,693 INFO L87 Difference]: Start difference. First operand 10393 states and 33558 transitions. Second operand has 44 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:00:57,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:00:57,115 INFO L93 Difference]: Finished difference Result 52145 states and 150539 transitions. [2022-03-15 20:00:57,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 343 states. [2022-03-15 20:00:57,116 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-03-15 20:00:57,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:00:57,260 INFO L225 Difference]: With dead ends: 52145 [2022-03-15 20:00:57,260 INFO L226 Difference]: Without dead ends: 51506 [2022-03-15 20:00:57,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 78 SyntacticMatches, 16 SemanticMatches, 428 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64330 ImplicationChecksByTransitivity, 30.3s TimeCoverageRelationStatistics Valid=23297, Invalid=161158, Unknown=15, NotChecked=0, Total=184470 [2022-03-15 20:00:57,269 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2204 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 2446 mSolverCounterSat, 943 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2204 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 943 IncrementalHoareTripleChecker+Valid, 2446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-15 20:00:57,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2204 Valid, 0 Invalid, 3389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [943 Valid, 2446 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-15 20:00:57,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51506 states. [2022-03-15 20:00:57,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51506 to 10511. [2022-03-15 20:00:57,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10511 states, 10510 states have (on average 3.220456707897241) internal successors, (33847), 10510 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) [2022-03-15 20:00:57,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10511 states to 10511 states and 33847 transitions. [2022-03-15 20:00:57,846 INFO L78 Accepts]: Start accepts. Automaton has 10511 states and 33847 transitions. Word has length 42 [2022-03-15 20:00:57,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:00:57,847 INFO L470 AbstractCegarLoop]: Abstraction has 10511 states and 33847 transitions. [2022-03-15 20:00:57,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:00:57,847 INFO L276 IsEmpty]: Start isEmpty. Operand 10511 states and 33847 transitions. [2022-03-15 20:00:57,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-03-15 20:00:57,857 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:00:57,857 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:00:57,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2022-03-15 20:00:58,075 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,SelfDestructingSolverStorable85 [2022-03-15 20:00:58,075 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 20:00:58,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:00:58,076 INFO L85 PathProgramCache]: Analyzing trace with hash 685689602, now seen corresponding path program 84 times [2022-03-15 20:00:58,077 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:00:58,077 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578217057] [2022-03-15 20:00:58,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:00:58,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:00:58,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:00:58,927 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:00:58,927 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:00:58,928 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578217057] [2022-03-15 20:00:58,928 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578217057] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 20:00:58,928 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456416436] [2022-03-15 20:00:58,928 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 20:00:58,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 20:00:58,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 20:00:58,929 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) [2022-03-15 20:00:58,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-03-15 20:00:59,335 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-03-15 20:00:59,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 20:00:59,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 58 conjunts are in the unsatisfiable core [2022-03-15 20:00:59,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 20:01:00,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 20:01:00,017 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 21 treesize of output 23 [2022-03-15 20:01:05,700 INFO L353 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2022-03-15 20:01:05,701 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 26 treesize of output 10 [2022-03-15 20:01:05,711 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 36 proven. 82 refuted. 2 times theorem prover too weak. 45 trivial. 0 not checked. [2022-03-15 20:01:05,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 20:01:06,767 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 20:01:06,768 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 45 treesize of output 45 [2022-03-15 20:01:06,771 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 13 treesize of output 7 [2022-03-15 20:01:07,836 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 36 proven. 84 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-03-15 20:01:07,837 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456416436] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 20:01:07,837 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 20:01:07,837 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 24, 24] total 79 [2022-03-15 20:01:07,837 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [897232199] [2022-03-15 20:01:07,837 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:01:07,843 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:01:07,899 INFO L252 McrAutomatonBuilder]: Finished intersection with 101 states and 169 transitions. [2022-03-15 20:01:07,899 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:01:10,033 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 10 new interpolants: [1489563#(or (<= ~size~0 5) (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 20)) 5) (< ~front~0 0)), 1489558#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0)), 1489564#(or (<= ~size~0 6) (< ~front~0 0) (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 24)) 5)), 1489565#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 28))) (<= ~size~0 7) (< ~front~0 0)), 1489559#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0)), 1489567#(or (<= ~size~0 9) (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 36)) 5) (< ~front~0 0)), 1489562#(or (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) 16 ~queue~0.offset)) 5) (<= ~size~0 4) (< ~front~0 0)), 1489561#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 12))) (<= ~size~0 3) (< ~front~0 0)), 1489566#(or (<= ~size~0 8) (= (select (select |#memory_int| ~queue~0.base) (+ 32 (* ~front~0 4) ~queue~0.offset)) 5) (< ~front~0 0)), 1489560#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (< ~front~0 0))] [2022-03-15 20:01:10,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-15 20:01:10,034 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:01:10,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-15 20:01:10,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1028, Invalid=7157, Unknown=5, NotChecked=0, Total=8190 [2022-03-15 20:01:10,035 INFO L87 Difference]: Start difference. First operand 10511 states and 33847 transitions. Second operand has 45 states, 44 states have (on average 2.5681818181818183) internal successors, (113), 44 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:01:15,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:01:15,721 INFO L93 Difference]: Finished difference Result 23698 states and 69635 transitions. [2022-03-15 20:01:15,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-03-15 20:01:15,722 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 2.5681818181818183) internal successors, (113), 44 states have internal predecessors, (113), 0 states have call successors, (0), 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 42 [2022-03-15 20:01:15,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:01:15,784 INFO L225 Difference]: With dead ends: 23698 [2022-03-15 20:01:15,784 INFO L226 Difference]: Without dead ends: 23691 [2022-03-15 20:01:15,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6607 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=4004, Invalid=23713, Unknown=5, NotChecked=0, Total=27722 [2022-03-15 20:01:15,785 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 506 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 2299 mSolverCounterSat, 370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 2299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 20:01:15,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [506 Valid, 0 Invalid, 2669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 2299 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 20:01:15,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23691 states. [2022-03-15 20:01:16,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23691 to 10509. [2022-03-15 20:01:16,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10509 states, 10508 states have (on average 3.2206889988580127) internal successors, (33843), 10508 states have internal predecessors, (33843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:01:16,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10509 states to 10509 states and 33843 transitions. [2022-03-15 20:01:16,075 INFO L78 Accepts]: Start accepts. Automaton has 10509 states and 33843 transitions. Word has length 42 [2022-03-15 20:01:16,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:01:16,075 INFO L470 AbstractCegarLoop]: Abstraction has 10509 states and 33843 transitions. [2022-03-15 20:01:16,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 2.5681818181818183) internal successors, (113), 44 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:01:16,075 INFO L276 IsEmpty]: Start isEmpty. Operand 10509 states and 33843 transitions. [2022-03-15 20:01:16,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-03-15 20:01:16,079 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:01:16,079 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:01:16,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2022-03-15 20:01:16,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 20:01:16,287 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 20:01:16,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:01:16,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1916071152, now seen corresponding path program 85 times [2022-03-15 20:01:16,290 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:01:16,290 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127168151] [2022-03-15 20:01:16,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:01:16,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:01:16,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:01:16,423 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 76 proven. 45 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-03-15 20:01:16,424 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:01:16,424 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127168151] [2022-03-15 20:01:16,424 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127168151] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 20:01:16,424 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390944489] [2022-03-15 20:01:16,424 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 20:01:16,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 20:01:16,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 20:01:16,426 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 20:01:16,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-03-15 20:01:16,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:01:16,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 20:01:16,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 20:01:16,763 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 76 proven. 45 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-03-15 20:01:16,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 20:01:16,842 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 76 proven. 45 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-03-15 20:01:16,842 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390944489] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 20:01:16,842 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 20:01:16,842 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 13 [2022-03-15 20:01:16,842 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [670556599] [2022-03-15 20:01:16,842 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:01:16,849 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:01:16,932 INFO L252 McrAutomatonBuilder]: Finished intersection with 126 states and 219 transitions. [2022-03-15 20:01:16,932 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:01:17,760 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 20:01:17,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 20:01:17,761 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:01:17,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 20:01:17,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2022-03-15 20:01:17,761 INFO L87 Difference]: Start difference. First operand 10509 states and 33843 transitions. Second operand has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:01:17,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:01:17,935 INFO L93 Difference]: Finished difference Result 14847 states and 45308 transitions. [2022-03-15 20:01:17,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 20:01:17,935 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 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 43 [2022-03-15 20:01:17,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:01:17,969 INFO L225 Difference]: With dead ends: 14847 [2022-03-15 20:01:17,969 INFO L226 Difference]: Without dead ends: 14801 [2022-03-15 20:01:17,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2022-03-15 20:01:17,969 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 127 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 20:01:17,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 0 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 20:01:17,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14801 states. [2022-03-15 20:01:18,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14801 to 12061. [2022-03-15 20:01:18,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12061 states, 12060 states have (on average 3.1701492537313434) internal successors, (38232), 12060 states have internal predecessors, (38232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:01:18,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12061 states to 12061 states and 38232 transitions. [2022-03-15 20:01:18,208 INFO L78 Accepts]: Start accepts. Automaton has 12061 states and 38232 transitions. Word has length 43 [2022-03-15 20:01:18,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:01:18,208 INFO L470 AbstractCegarLoop]: Abstraction has 12061 states and 38232 transitions. [2022-03-15 20:01:18,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:01:18,209 INFO L276 IsEmpty]: Start isEmpty. Operand 12061 states and 38232 transitions. [2022-03-15 20:01:18,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-03-15 20:01:18,214 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:01:18,214 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:01:18,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2022-03-15 20:01:18,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 20:01:18,430 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 20:01:18,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:01:18,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1564353664, now seen corresponding path program 86 times [2022-03-15 20:01:18,432 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:01:18,432 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842808283] [2022-03-15 20:01:18,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:01:18,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:01:18,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:01:18,714 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 67 proven. 74 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-15 20:01:18,714 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:01:18,714 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842808283] [2022-03-15 20:01:18,714 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842808283] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 20:01:18,714 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056279934] [2022-03-15 20:01:18,714 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 20:01:18,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 20:01:18,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 20:01:18,716 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 20:01:18,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-03-15 20:01:19,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 20:01:19,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 20:01:19,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 28 conjunts are in the unsatisfiable core [2022-03-15 20:01:19,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 20:01:19,695 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 86 proven. 55 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-15 20:01:19,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 20:01:20,442 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 76 proven. 65 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-15 20:01:20,442 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056279934] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 20:01:20,442 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 20:01:20,443 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 67 [2022-03-15 20:01:20,443 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [599324120] [2022-03-15 20:01:20,443 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:01:20,450 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:01:20,505 INFO L252 McrAutomatonBuilder]: Finished intersection with 87 states and 130 transitions. [2022-03-15 20:01:20,505 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:01:20,982 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1573997#(or (<= ~size~0 0) (<= ~n~0 ~front~0) (< ~front~0 0))] [2022-03-15 20:01:20,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-15 20:01:20,983 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:01:20,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-15 20:01:20,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1154, Invalid=3538, Unknown=0, NotChecked=0, Total=4692 [2022-03-15 20:01:20,984 INFO L87 Difference]: Start difference. First operand 12061 states and 38232 transitions. Second operand has 25 states, 25 states have (on average 2.04) internal successors, (51), 24 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:01:21,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:01:21,754 INFO L93 Difference]: Finished difference Result 17563 states and 50390 transitions. [2022-03-15 20:01:21,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-15 20:01:21,755 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.04) internal successors, (51), 24 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-03-15 20:01:21,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:01:21,778 INFO L225 Difference]: With dead ends: 17563 [2022-03-15 20:01:21,778 INFO L226 Difference]: Without dead ends: 12062 [2022-03-15 20:01:21,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2099 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1515, Invalid=5291, Unknown=0, NotChecked=0, Total=6806 [2022-03-15 20:01:21,779 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 64 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 20:01:21,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 0 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 20:01:21,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12062 states. [2022-03-15 20:01:21,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12062 to 12062. [2022-03-15 20:01:21,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12062 states, 12061 states have (on average 3.1699693226100654) internal successors, (38233), 12061 states have internal predecessors, (38233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:01:21,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12062 states to 12062 states and 38233 transitions. [2022-03-15 20:01:21,964 INFO L78 Accepts]: Start accepts. Automaton has 12062 states and 38233 transitions. Word has length 44 [2022-03-15 20:01:21,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:01:21,964 INFO L470 AbstractCegarLoop]: Abstraction has 12062 states and 38233 transitions. [2022-03-15 20:01:21,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.04) internal successors, (51), 24 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:01:21,964 INFO L276 IsEmpty]: Start isEmpty. Operand 12062 states and 38233 transitions. [2022-03-15 20:01:21,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-03-15 20:01:21,983 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:01:21,983 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:01:22,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2022-03-15 20:01:22,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2022-03-15 20:01:22,184 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 20:01:22,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:01:22,184 INFO L85 PathProgramCache]: Analyzing trace with hash -645019368, now seen corresponding path program 87 times [2022-03-15 20:01:22,185 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:01:22,185 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137260885] [2022-03-15 20:01:22,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:01:22,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:01:22,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:01:22,921 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 36 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:01:22,921 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:01:22,921 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137260885] [2022-03-15 20:01:22,921 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137260885] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 20:01:22,921 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013009597] [2022-03-15 20:01:22,921 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 20:01:22,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 20:01:22,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 20:01:22,923 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 20:01:22,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-03-15 20:01:24,385 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-03-15 20:01:24,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 20:01:24,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 118 conjunts are in the unsatisfiable core [2022-03-15 20:01:24,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 20:01:24,877 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 [2022-03-15 20:01:24,932 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 [2022-03-15 20:01:24,984 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 [2022-03-15 20:01:25,935 INFO L353 Elim1Store]: treesize reduction 292, result has 1.0 percent of original size [2022-03-15 20:01:25,935 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 71 treesize of output 25 [2022-03-15 20:01:25,941 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 30 proven. 153 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-15 20:01:25,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 20:01:28,152 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4619 (Array Int Int)) (v_~size~0_4713 Int) (v_~front~0_3161 Int)) (let ((.cse3 (* v_~front~0_3161 4)) (.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_4619) c_~queue~0.base)) (.cse1 (* c_~size~0 4)) (.cse2 (* c_~front~0 4))) (or (not (= (select .cse0 (+ .cse1 c_~queue~0.offset .cse2 32)) 5)) (not (= (select .cse0 (+ .cse1 c_~queue~0.offset .cse2 20)) 5)) (not (= (select .cse0 (+ .cse1 c_~queue~0.offset .cse2 24)) 5)) (<= (+ v_~size~0_4713 1) 0) (< v_~front~0_3161 1) (not (< (+ v_~size~0_4713 v_~front~0_3161 4) c_~n~0)) (not (= 5 (select .cse0 (+ c_~queue~0.offset 16 .cse3 (* v_~size~0_4713 4))))) (not (= 5 (select .cse0 (+ .cse1 c_~queue~0.offset .cse2 36)))) (= (select .cse0 (+ c_~queue~0.offset 16 .cse3)) 5) (not (= 5 (select .cse0 (+ .cse1 c_~queue~0.offset .cse2 28))))))) is different from false [2022-03-15 20:01:28,392 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 20:01:28,393 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 235 treesize of output 163 [2022-03-15 20:01:28,478 INFO L353 Elim1Store]: treesize reduction 316, result has 35.1 percent of original size [2022-03-15 20:01:28,478 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 600 treesize of output 689 [2022-03-15 20:01:28,577 INFO L353 Elim1Store]: treesize reduction 381, result has 21.8 percent of original size [2022-03-15 20:01:28,577 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 519 treesize of output 490 [2022-03-15 20:01:28,655 INFO L353 Elim1Store]: treesize reduction 381, result has 21.8 percent of original size [2022-03-15 20:01:28,656 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 364 treesize of output 402 [2022-03-15 20:01:30,640 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 10 proven. 173 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-15 20:01:30,640 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013009597] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 20:01:30,640 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 20:01:30,640 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 31, 31] total 95 [2022-03-15 20:01:30,640 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [731993157] [2022-03-15 20:01:30,640 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:01:30,648 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:01:30,704 INFO L252 McrAutomatonBuilder]: Finished intersection with 88 states and 131 transitions. [2022-03-15 20:01:30,704 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:01:31,183 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1616074#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0))] [2022-03-15 20:01:31,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-03-15 20:01:31,183 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:01:31,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-03-15 20:01:31,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=748, Invalid=8567, Unknown=1, NotChecked=190, Total=9506 [2022-03-15 20:01:31,184 INFO L87 Difference]: Start difference. First operand 12062 states and 38233 transitions. Second operand has 38 states, 37 states have (on average 2.2162162162162162) internal successors, (82), 37 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:01:34,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:01:34,640 INFO L93 Difference]: Finished difference Result 17029 states and 50524 transitions. [2022-03-15 20:01:34,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-03-15 20:01:34,640 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.2162162162162162) internal successors, (82), 37 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-03-15 20:01:34,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:01:34,674 INFO L225 Difference]: With dead ends: 17029 [2022-03-15 20:01:34,675 INFO L226 Difference]: Without dead ends: 16866 [2022-03-15 20:01:34,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 5677 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=2486, Invalid=22323, Unknown=1, NotChecked=312, Total=25122 [2022-03-15 20:01:34,677 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 453 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 424 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 424 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 20:01:34,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [453 Valid, 0 Invalid, 1418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [424 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 20:01:34,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16866 states. [2022-03-15 20:01:34,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16866 to 12484. [2022-03-15 20:01:34,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12484 states, 12483 states have (on average 3.200032043579268) internal successors, (39946), 12483 states have internal predecessors, (39946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:01:34,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12484 states to 12484 states and 39946 transitions. [2022-03-15 20:01:34,911 INFO L78 Accepts]: Start accepts. Automaton has 12484 states and 39946 transitions. Word has length 45 [2022-03-15 20:01:34,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:01:34,912 INFO L470 AbstractCegarLoop]: Abstraction has 12484 states and 39946 transitions. [2022-03-15 20:01:34,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.2162162162162162) internal successors, (82), 37 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:01:34,912 INFO L276 IsEmpty]: Start isEmpty. Operand 12484 states and 39946 transitions. [2022-03-15 20:01:34,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-03-15 20:01:34,917 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:01:34,917 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:01:34,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2022-03-15 20:01:35,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 20:01:35,130 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 20:01:35,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:01:35,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1364128704, now seen corresponding path program 88 times [2022-03-15 20:01:35,131 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:01:35,132 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471356361] [2022-03-15 20:01:35,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:01:35,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:01:35,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:01:35,688 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:01:35,688 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:01:35,688 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471356361] [2022-03-15 20:01:35,688 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471356361] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 20:01:35,688 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771797154] [2022-03-15 20:01:35,688 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 20:01:35,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 20:01:35,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 20:01:35,690 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 20:01:35,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-03-15 20:01:35,983 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 20:01:35,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 20:01:35,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 100 conjunts are in the unsatisfiable core [2022-03-15 20:01:35,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 20:01:37,108 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 [2022-03-15 20:01:37,113 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 197 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 20:01:37,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 20:01:37,187 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 20:01:37,187 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 28 treesize of output 13 [2022-03-15 20:01:38,192 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 131 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-03-15 20:01:38,192 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771797154] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 20:01:38,193 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 20:01:38,193 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 33, 14] total 80 [2022-03-15 20:01:38,193 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [753977250] [2022-03-15 20:01:38,193 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:01:38,200 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:01:38,260 INFO L252 McrAutomatonBuilder]: Finished intersection with 92 states and 140 transitions. [2022-03-15 20:01:38,260 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:01:39,096 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [1658541#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0)), 1658540#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0))] [2022-03-15 20:01:39,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-15 20:01:39,096 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:01:39,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-15 20:01:39,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=6617, Unknown=0, NotChecked=0, Total=6972 [2022-03-15 20:01:39,097 INFO L87 Difference]: Start difference. First operand 12484 states and 39946 transitions. Second operand has 39 states, 38 states have (on average 2.289473684210526) internal successors, (87), 38 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:01:44,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:01:44,053 INFO L93 Difference]: Finished difference Result 21940 states and 62586 transitions. [2022-03-15 20:01:44,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2022-03-15 20:01:44,053 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 2.289473684210526) internal successors, (87), 38 states have internal predecessors, (87), 0 states have call successors, (0), 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 45 [2022-03-15 20:01:44,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:01:44,095 INFO L225 Difference]: With dead ends: 21940 [2022-03-15 20:01:44,096 INFO L226 Difference]: Without dead ends: 21611 [2022-03-15 20:01:44,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 41 SyntacticMatches, 46 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8556 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=1760, Invalid=34530, Unknown=0, NotChecked=0, Total=36290 [2022-03-15 20:01:44,100 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 538 mSDsluCounter, 1903 mSDsCounter, 0 mSdLazyCounter, 3582 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 3582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-15 20:01:44,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [538 Valid, 0 Invalid, 3839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 3582 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-15 20:01:44,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21611 states. [2022-03-15 20:01:44,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21611 to 12468. [2022-03-15 20:01:44,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12468 states, 12467 states have (on average 3.197721986043154) internal successors, (39866), 12467 states have internal predecessors, (39866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:01:44,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12468 states to 12468 states and 39866 transitions. [2022-03-15 20:01:44,438 INFO L78 Accepts]: Start accepts. Automaton has 12468 states and 39866 transitions. Word has length 45 [2022-03-15 20:01:44,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:01:44,439 INFO L470 AbstractCegarLoop]: Abstraction has 12468 states and 39866 transitions. [2022-03-15 20:01:44,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 2.289473684210526) internal successors, (87), 38 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:01:44,439 INFO L276 IsEmpty]: Start isEmpty. Operand 12468 states and 39866 transitions. [2022-03-15 20:01:44,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-03-15 20:01:44,445 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:01:44,445 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:01:44,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2022-03-15 20:01:44,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 20:01:44,663 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 20:01:44,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:01:44,664 INFO L85 PathProgramCache]: Analyzing trace with hash -776790504, now seen corresponding path program 89 times [2022-03-15 20:01:44,665 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:01:44,665 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055842331] [2022-03-15 20:01:44,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:01:44,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:01:44,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:01:45,438 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:01:45,438 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:01:45,438 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055842331] [2022-03-15 20:01:45,438 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055842331] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 20:01:45,438 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815039451] [2022-03-15 20:01:45,439 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 20:01:45,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 20:01:45,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 20:01:45,440 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 20:01:45,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-03-15 20:01:45,753 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-03-15 20:01:45,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 20:01:45,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 109 conjunts are in the unsatisfiable core [2022-03-15 20:01:45,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 20:01:46,263 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 13 treesize of output 9 [2022-03-15 20:01:46,311 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 [2022-03-15 20:01:46,364 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 [2022-03-15 20:01:47,433 INFO L353 Elim1Store]: treesize reduction 12, result has 20.0 percent of original size [2022-03-15 20:01:47,433 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-03-15 20:01:47,445 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:01:47,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 20:01:48,827 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 20:01:48,828 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 65 treesize of output 53 [2022-03-15 20:01:48,832 INFO L353 Elim1Store]: treesize reduction 16, result has 23.8 percent of original size [2022-03-15 20:01:48,833 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 340 treesize of output 303 [2022-03-15 20:01:48,847 INFO L353 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-03-15 20:01:48,847 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 298 treesize of output 264 [2022-03-15 20:01:48,851 INFO L353 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-03-15 20:01:48,851 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 264 treesize of output 196 [2022-03-15 20:01:48,958 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 132 refuted. 11 times theorem prover too weak. 55 trivial. 0 not checked. [2022-03-15 20:01:48,958 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815039451] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 20:01:48,958 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 20:01:48,958 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 36, 26] total 95 [2022-03-15 20:01:48,958 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [126113282] [2022-03-15 20:01:48,958 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:01:48,966 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:01:49,026 INFO L252 McrAutomatonBuilder]: Finished intersection with 96 states and 149 transitions. [2022-03-15 20:01:49,027 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:01:50,015 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [1705995#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (< ~front~0 0)), 1705994#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0)), 1705993#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0))] [2022-03-15 20:01:50,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-03-15 20:01:50,015 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:01:50,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-03-15 20:01:50,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=552, Invalid=9340, Unknown=8, NotChecked=0, Total=9900 [2022-03-15 20:01:50,017 INFO L87 Difference]: Start difference. First operand 12468 states and 39866 transitions. Second operand has 40 states, 39 states have (on average 2.358974358974359) internal successors, (92), 39 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:01:59,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:01:59,996 INFO L93 Difference]: Finished difference Result 30110 states and 83372 transitions. [2022-03-15 20:01:59,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2022-03-15 20:01:59,997 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.358974358974359) internal successors, (92), 39 states have internal predecessors, (92), 0 states have call successors, (0), 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 45 [2022-03-15 20:01:59,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:02:00,069 INFO L225 Difference]: With dead ends: 30110 [2022-03-15 20:02:00,069 INFO L226 Difference]: Without dead ends: 29509 [2022-03-15 20:02:00,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 50 SyntacticMatches, 25 SemanticMatches, 279 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18650 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=4056, Invalid=74616, Unknown=8, NotChecked=0, Total=78680 [2022-03-15 20:02:00,072 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1215 mSDsluCounter, 2888 mSDsCounter, 0 mSdLazyCounter, 5337 mSolverCounterSat, 411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1215 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 5337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-15 20:02:00,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1215 Valid, 0 Invalid, 5748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [411 Valid, 5337 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-15 20:02:00,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29509 states. [2022-03-15 20:02:00,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29509 to 12432. [2022-03-15 20:02:00,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12432 states, 12431 states have (on average 3.194272383557236) internal successors, (39708), 12431 states have internal predecessors, (39708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:02:00,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12432 states to 12432 states and 39708 transitions. [2022-03-15 20:02:00,449 INFO L78 Accepts]: Start accepts. Automaton has 12432 states and 39708 transitions. Word has length 45 [2022-03-15 20:02:00,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:02:00,449 INFO L470 AbstractCegarLoop]: Abstraction has 12432 states and 39708 transitions. [2022-03-15 20:02:00,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.358974358974359) internal successors, (92), 39 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:02:00,449 INFO L276 IsEmpty]: Start isEmpty. Operand 12432 states and 39708 transitions. [2022-03-15 20:02:00,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-03-15 20:02:00,455 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:02:00,456 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:02:00,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2022-03-15 20:02:00,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 20:02:00,674 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 20:02:00,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:02:00,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1574190784, now seen corresponding path program 90 times [2022-03-15 20:02:00,675 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:02:00,675 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726369243] [2022-03-15 20:02:00,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:02:00,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:02:00,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:02:01,382 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:02:01,382 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:02:01,382 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726369243] [2022-03-15 20:02:01,382 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726369243] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 20:02:01,382 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242096140] [2022-03-15 20:02:01,382 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 20:02:01,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 20:02:01,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 20:02:01,383 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 20:02:01,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-03-15 20:02:02,041 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-03-15 20:02:02,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 20:02:02,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 64 conjunts are in the unsatisfiable core [2022-03-15 20:02:02,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 20:02:02,611 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 [2022-03-15 20:02:02,665 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 [2022-03-15 20:02:02,717 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 [2022-03-15 20:02:03,939 INFO L353 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2022-03-15 20:02:03,939 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 26 treesize of output 10 [2022-03-15 20:02:03,949 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 61 proven. 91 refuted. 1 times theorem prover too weak. 45 trivial. 0 not checked. [2022-03-15 20:02:03,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 20:02:28,568 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 20:02:28,569 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 63 treesize of output 51 [2022-03-15 20:02:28,577 INFO L353 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2022-03-15 20:02:28,578 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 324 treesize of output 297 [2022-03-15 20:02:28,585 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-03-15 20:02:28,585 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 286 treesize of output 256 [2022-03-15 20:02:28,593 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-03-15 20:02:28,593 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 256 treesize of output 196 [2022-03-15 20:02:29,256 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 22 proven. 119 refuted. 12 times theorem prover too weak. 45 trivial. 0 not checked. [2022-03-15 20:02:29,257 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242096140] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 20:02:29,257 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 20:02:29,257 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 26, 26] total 85 [2022-03-15 20:02:29,257 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [452311390] [2022-03-15 20:02:29,257 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:02:29,264 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:02:29,331 INFO L252 McrAutomatonBuilder]: Finished intersection with 100 states and 158 transitions. [2022-03-15 20:02:29,331 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:02:30,654 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [1761685#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (< ~front~0 0)), 1761684#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0)), 1761683#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0)), 1761686#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 12))) (<= ~size~0 3) (< ~front~0 0))] [2022-03-15 20:02:30,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-15 20:02:30,655 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:02:30,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-15 20:02:30,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=871, Invalid=7297, Unknown=22, NotChecked=0, Total=8190 [2022-03-15 20:02:30,656 INFO L87 Difference]: Start difference. First operand 12432 states and 39708 transitions. Second operand has 41 states, 40 states have (on average 2.425) internal successors, (97), 40 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:02:45,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:02:45,616 INFO L93 Difference]: Finished difference Result 45433 states and 123279 transitions. [2022-03-15 20:02:45,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 319 states. [2022-03-15 20:02:45,616 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.425) internal successors, (97), 40 states have internal predecessors, (97), 0 states have call successors, (0), 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 45 [2022-03-15 20:02:45,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:02:45,725 INFO L225 Difference]: With dead ends: 45433 [2022-03-15 20:02:45,725 INFO L226 Difference]: Without dead ends: 44376 [2022-03-15 20:02:45,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 64 SyntacticMatches, 24 SemanticMatches, 394 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55309 ImplicationChecksByTransitivity, 39.0s TimeCoverageRelationStatistics Valid=7562, Invalid=148836, Unknown=22, NotChecked=0, Total=156420 [2022-03-15 20:02:45,731 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1969 mSDsluCounter, 2356 mSDsCounter, 0 mSdLazyCounter, 4566 mSolverCounterSat, 560 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1969 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 560 IncrementalHoareTripleChecker+Valid, 4566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-15 20:02:45,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1969 Valid, 0 Invalid, 5126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [560 Valid, 4566 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-15 20:02:45,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44376 states. [2022-03-15 20:02:46,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44376 to 12384. [2022-03-15 20:02:46,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12384 states, 12383 states have (on average 3.1901800856012277) internal successors, (39504), 12383 states have internal predecessors, (39504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:02:46,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12384 states to 12384 states and 39504 transitions. [2022-03-15 20:02:46,230 INFO L78 Accepts]: Start accepts. Automaton has 12384 states and 39504 transitions. Word has length 45 [2022-03-15 20:02:46,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:02:46,230 INFO L470 AbstractCegarLoop]: Abstraction has 12384 states and 39504 transitions. [2022-03-15 20:02:46,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.425) internal successors, (97), 40 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:02:46,230 INFO L276 IsEmpty]: Start isEmpty. Operand 12384 states and 39504 transitions. [2022-03-15 20:02:46,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-03-15 20:02:46,237 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:02:46,237 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:02:46,257 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2022-03-15 20:02:46,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable92 [2022-03-15 20:02:46,439 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 20:02:46,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:02:46,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1440166680, now seen corresponding path program 91 times [2022-03-15 20:02:46,441 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:02:46,441 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384031730] [2022-03-15 20:02:46,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:02:46,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:02:46,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:02:47,192 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:02:47,192 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:02:47,192 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384031730] [2022-03-15 20:02:47,192 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384031730] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 20:02:47,192 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779465548] [2022-03-15 20:02:47,192 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 20:02:47,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 20:02:47,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 20:02:47,193 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 20:02:47,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-03-15 20:02:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:02:47,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 94 conjunts are in the unsatisfiable core [2022-03-15 20:02:47,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 20:02:48,629 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 [2022-03-15 20:02:48,637 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 197 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 20:02:48,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 20:02:48,886 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 20:02:48,886 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 28 treesize of output 13 [2022-03-15 20:02:50,205 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 131 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-03-15 20:02:50,206 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779465548] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 20:02:50,206 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 20:02:50,206 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 33, 17] total 83 [2022-03-15 20:02:50,206 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1579115017] [2022-03-15 20:02:50,206 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:02:50,213 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:02:50,281 INFO L252 McrAutomatonBuilder]: Finished intersection with 104 states and 167 transitions. [2022-03-15 20:02:50,281 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:02:51,367 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [1832847#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) (<= ~size~0 0) (< ~front~0 0)), 1832850#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 12))) (<= ~size~0 3) (< ~front~0 0)), 1832849#(or (<= ~size~0 2) (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 8))) (< ~front~0 0)), 1832851#(or (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) 16 ~queue~0.offset)) 5) (<= ~size~0 4) (< ~front~0 0)), 1832848#(or (= 5 (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset 4))) (<= ~size~0 1) (< ~front~0 0))] [2022-03-15 20:02:51,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-15 20:02:51,368 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:02:51,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-15 20:02:51,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=475, Invalid=7535, Unknown=0, NotChecked=0, Total=8010 [2022-03-15 20:02:51,369 INFO L87 Difference]: Start difference. First operand 12384 states and 39504 transitions. Second operand has 42 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 41 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2022-03-15 20:02:52,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 20:02:52,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 53 SyntacticMatches, 40 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2942 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=754, Invalid=11018, Unknown=0, NotChecked=0, Total=11772 [2022-03-15 20:02:52,165 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 37 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 20:02:52,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 0 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 20:02:52,166 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-03-15 20:02:52,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2022-03-15 20:02:52,194 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-15 20:02:52,195 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-15 20:02:52,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 20:02:52,367 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (12384states) and FLOYD_HOARE automaton (currently 21 states, 42 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 109 known predicates. [2022-03-15 20:02:52,368 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-15 20:02:52,368 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-15 20:02:52,369 INFO L732 BasicCegarLoop]: Path program histogram: [91, 1, 1, 1] [2022-03-15 20:02:52,371 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 20:02:52,371 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 20:02:52,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 08:02:52 BasicIcfg [2022-03-15 20:02:52,372 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 20:02:52,372 INFO L158 Benchmark]: Toolchain (without parser) took 848959.68ms. Allocated memory was 186.6MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 159.1MB in the beginning and 823.5MB in the end (delta: -664.4MB). Peak memory consumption was 972.5MB. Max. memory is 8.0GB. [2022-03-15 20:02:52,372 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 186.6MB. Free memory is still 146.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 20:02:52,372 INFO L158 Benchmark]: CACSL2BoogieTranslator took 268.98ms. Allocated memory is still 186.6MB. Free memory was 159.0MB in the beginning and 158.6MB in the end (delta: 335.6kB). Peak memory consumption was 10.0MB. Max. memory is 8.0GB. [2022-03-15 20:02:52,372 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.52ms. Allocated memory is still 186.6MB. Free memory was 158.6MB in the beginning and 156.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-15 20:02:52,372 INFO L158 Benchmark]: Boogie Preprocessor took 29.12ms. Allocated memory is still 186.6MB. Free memory was 156.8MB in the beginning and 155.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 20:02:52,372 INFO L158 Benchmark]: RCFGBuilder took 417.20ms. Allocated memory is still 186.6MB. Free memory was 155.3MB in the beginning and 136.1MB in the end (delta: 19.2MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2022-03-15 20:02:52,372 INFO L158 Benchmark]: TraceAbstraction took 848202.32ms. Allocated memory was 186.6MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 135.6MB in the beginning and 823.5MB in the end (delta: -687.9MB). Peak memory consumption was 949.9MB. Max. memory is 8.0GB. [2022-03-15 20:02:52,372 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 186.6MB. Free memory is still 146.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 268.98ms. Allocated memory is still 186.6MB. Free memory was 159.0MB in the beginning and 158.6MB in the end (delta: 335.6kB). Peak memory consumption was 10.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 38.52ms. Allocated memory is still 186.6MB. Free memory was 158.6MB in the beginning and 156.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.12ms. Allocated memory is still 186.6MB. Free memory was 156.8MB in the beginning and 155.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 417.20ms. Allocated memory is still 186.6MB. Free memory was 155.3MB in the beginning and 136.1MB in the end (delta: 19.2MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * TraceAbstraction took 848202.32ms. Allocated memory was 186.6MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 135.6MB in the beginning and 823.5MB in the end (delta: -687.9MB). Peak memory consumption was 949.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.0s, 114 PlacesBefore, 22 PlacesAfterwards, 116 TransitionsBefore, 18 TransitionsAfterwards, 368 CoEnabledTransitionPairs, 7 FixpointIterations, 79 TrivialSequentialCompositions, 16 ConcurrentSequentialCompositions, 12 TrivialYvCompositions, 5 ConcurrentYvCompositions, 6 ChoiceCompositions, 118 TotalNumberOfCompositions, 453 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 443, positive: 429, positive conditional: 0, positive unconditional: 429, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 219, positive: 216, positive conditional: 0, positive unconditional: 216, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 443, positive: 213, positive conditional: 0, positive unconditional: 213, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 219, unknown conditional: 0, unknown unconditional: 219] , Statistics on independence cache: Total cache size (in pairs): 14, Positive cache size: 13, Positive conditional cache size: 0, Positive unconditional cache size: 13, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1 - 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: 85]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (12384states) and FLOYD_HOARE automaton (currently 21 states, 42 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 109 known predicates. - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (12384states) and FLOYD_HOARE automaton (currently 21 states, 42 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 109 known predicates. - TimeoutResultAtElement [Line: 80]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (12384states) and FLOYD_HOARE automaton (currently 21 states, 42 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 109 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 124 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 848.1s, OverallIterations: 94, TraceHistogramMax: 11, PathProgramHistogramMax: 91, EmptinessCheckTime: 0.3s, AutomataDifference: 482.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 61348 SdHoareTripleChecker+Valid, 55.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 61348 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 47.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 54503 mSDsCounter, 21935 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 121056 IncrementalHoareTripleChecker+Invalid, 142991 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21935 mSolverCounterUnsat, 0 mSDtfsCounter, 121056 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21398 GetRequests, 5718 SyntacticMatches, 830 SemanticMatches, 14849 ConstructedPredicates, 19 IntricatePredicates, 0 DeprecatedPredicates, 2102547 ImplicationChecksByTransitivity, 608.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12484occurred in iteration=90, InterpolantAutomatonStates: 10907, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 12.4s AutomataMinimizationTime, 93 MinimizatonAttempts, 876244 StatesRemovedByMinimization, 81 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.4s SsaConstructionTime, 12.9s SatisfiabilityAnalysisTime, 220.7s InterpolantComputationTime, 5905 NumberOfCodeBlocks, 5891 NumberOfCodeBlocksAsserted, 400 NumberOfCheckSat, 8556 ConstructedInterpolants, 438 QuantifiedInterpolants, 102184 SizeOfPredicates, 1130 NumberOfNonLiveVariables, 32059 ConjunctsInSsa, 4744 ConjunctsInUnsatCore, 274 InterpolantComputations, 4 PerfectInterpolantSequences, 6848/24848 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